TDA4504 [NXP]
Small signal combination for multistandard colour TV; 对于多标准彩电小信号组合
| 型号： | TDA4504 |
| 厂家： | 
NXP |
| 描述： | Small signal combination for multistandard colour TV |
| 文件： | 总26页 (文件大小：192K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
TDA4504B
Small signal combination for
multistandard colour TV
February 1992
Product specification
File under Integrated Circuits, IC02
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
FEATURES
GENERAL DESCRIPTION
• Gain controlled vision IF amplifier
Having the capability to demodulate IF signals with either
positive or negative-going video information, the
TDA4504B (Fig.1) is contained within a 32 pin
encapsulation. It includes a three-stage vision IF amplifier,
mute circuit, AFC and AGC circuitry, fully synchronised
horizontal and vertical timebases with drive circuits and
integral three-level sandcastle pulse generator.
A functional colour tv receiver can thus be realized with the
addition of a tuner, audio demodulator and amplifier,
chroma decoder and respective line and field deflection
circuitry.
• Synchronous demodulator for negative and positive
demodulation
• AGC detector operating on peak sync amplitude for
negative demodulation and on peak white level for
positive demodulation
• Tuner AGC
• AFC circuit with two control polarities and on/off-switch
• Video preamplifier
• Video switch to select either the internal video signal or
an external video signal
• Horizontal oscillator and synchronization circuit with two
control loops
• Vertical synchronization (divider system), ramp
generator and driver with automatic amplitude
adjustment for 50 and 60 Hz
• Transmitter identification (mute)
• Sandcastle pulse generation
• VCR/auto VCR switch
• Start-up circuit
• Vertical guard
ORDERING INFORMATION
PACKAGE
EXTENDED
TYPE NUMBER
PINS
PIN POSITION
MATERIAL
CODE
TDA4504B
32
DIL
plastic
SOT201(1)
Note
1. SOT201-1; 1996 November 29
February 1992
2
Philips Semiconductors
Product specification
Small signal combination for multistandard
colour TV
TDA4504B
February 1992
3
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
QUICK REFERENCE DATA
SYMBOL
Supply
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V8
I8
positive supply voltage pin 8
supply current pin 8
10
12
13.2
140
9
V
90
115
6.5
mA
mA
I12
start current pin 12
−
Video
V9-10
G9-10
S/N
IF sensitivity (RMS value)
IF gain control range
signal to noise ratio
25
−
40
74
58
65
−
µV
dB
dB
Vi input signal =
10 mV
−
−
V21
AFC output voltage swing
video output amplitude
10.5
−
11.5
V
V
−
2
−
Video switch
16(p-p)
internal video input
external video input
video output
−
−
−
2
−
−
−
V
V
V
V13(p-p)
1
V15(p-p)
2.5
Sync
V28
I30
sync pulse input amplitude (p-p)
flyback input current
200
0.1
8
−
−
mV
mA
V
−
2
V30
sandcastle output during burst key
−
−
- during hor. blanking
- during vert. blanking
video transmitter identification
4
4.4
3.3
5
V
2.1
3.7
V
V14
- no signal condition
- 50 Hz signal
−
−
−
0.3
12
9
−
−
−
V
V
V
- 60 Hz signal
V5
vert. feedback
- DC voltage
- AC voltage
2.9
3.3
1
3.7
V
V
V5(p-p)
−
−
February 1992
4
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
PINNING
PIN
DESCRIPTION
1
black level internal video
AGC take over (output)
vertical ramp generator (output)
vertical drive (output)
vertical feedback (input)
tuner AGC (input)
ground
2
3
4
5
6
7
8
supply voltage
9
vision IF (input)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
vision IF (input)
IF AGC (output)
start horizontal oscillator (output)/AFC polarity switch (input)
external video (input)
mute/50 / 60 Hz (output)
video switch (output)
internal video (input)
VCR switch (input)
video switch (input)
ground for some critical parts
video amplifier (output)
AFC (output)
AFC S/H, AFC switch (input)
vision demodulator tuned circuit
vision demodulator tuned circuit
coincidence detector/transmitter identification
horizontal oscillator
phase 1 detector (output)
sync separator (input)
horizontal drive (output)
sandcastle output/horizontal flyback (input)
phase 2 detector (output)
AGC system switch (input)
February 1992
5
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
With weak input signals the drive
signal will contain considerable noise
which also possesses an
asymmetrical frequency spectrum
and could create an offset in the AFC
output voltage. The inclusion of a
notch in the demodulator tuned circuit
minimises this effect.
FUNCTIONAL DESCRIPTION
AFC-circuit
Obtaining the AFC reference signal
from the demodulator tuned circuit
presents the advantage of utilizing a
single tuned circuit and one
adjustment. However, since the
frequency spectrum of the signal
applied to the demodulator is
Vision IF amplifier, demodulator
and video amplifier
Each of the three AC-coupled IF
stages permit the omission of DC
feedback and possess a control
range in excess of 20 dB.
The sample-and-hold circuit is
followed by a high impedance output
amplifier. Thus the AFC control
gradient depends upon the load
impedance.
determined by the characteristic of
the SAW filter, the resultant
The IF amplifier, which is completely
symmetrical, is followed by a passive
synchronous demodulator providing a
regenerated carrier signal. This is
limited by a logarithmic limiter circuit
prior to its application to the
asymmetrical spectrum with respect
to the vision carrier causes the AFC
output voltage to be dependent upon
the video signal. The TDA4504B thus
contains a sample-and-hold circuit.
The AFC polarity switch is combined
with the start circuit (pin 12). It has a
negative slope when pin 12 is open or
connected to the main supply and a
positive slope when pin 12 is
grounded. The AFC is disabled when
the sample connection (pin 22) is
grounded.
demodulator.
With negative-going vision signals the
AFC is active only during the sync
pulse period. When positive-going
signals are applied to the device,
however, the AFC is continuously
active but filtered to ensure only a
small by-pass current is present in the
sample-and-hold circuit.
A noise clamp circuit is provided at
the video input (pin 16) to limit
interference pulses below the sync tip
level and is more efficient than a
noise inverter in providing improved
picture stability during the presence of
interference.
The video amplifier has good linearity
and bandwidth figures.
February 1992
6
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
AGC circuit
For signals employing negative modulation the AGC detector operates on peak sync level but upon peak white content
with those having positive modulation. Selection is facilitated by the system switch (pin 32):
pin 32
pin 32
HIGH/open:
LOW:
positive modulation
negative modulation
The AGC detector currents are:
positive modulation
1 µA
3 mA
negative modulation
55 µA
charge
discharge
1.5 mA
With a 6.8 µF AGC capacitor, the video tilt will be < 10% for positively modulated signals and < 2% for negative
modulation.
To obtain a rapid AGC action when executing a search tuning operation with the circuit set for peak white AGC, the
charge current is held at 55 µA until the detection of a transmitted signal.
The transmitter identification
A mute signal is generated to disable the audio preamplifier of an audio demodulator during the absence of a
transmission signal. When the video switch is in the internal mode, the identification of a transmitted signal is derived
from the coincidence detector.
In the external mode the IF part of the circuit has its own identification system. The system relies upon the detection of
sync. pulses on the incoming IF signal. The separated horizontal sync pulse charges the capacitor on pin 25 which drives
the mute output (pin 14).
The connection of a 1 MΩ resistor between pin 25 and VCC results in the mute information being overruled by the
50/60 Hz information derived from the internal vertical divider section
(see 50/60 Hz truth table).
MUTE Truth Table:
Input signal
50 Hz
60 Hz
none
50/60 Hz
50/60 Hz
50/60 Hz
none
Pins 9 and 10
pin 25
pin 28
pin 18
9.5 V
50 Hz
LOW
9.5 V
60 Hz
LOW
0.3 V
none
9.5 V
50 Hz
HIGH
9.5 V
60 Hz
HIGH
9.5 V
none
HIGH
0.3 V
50/60 Hz
HIGH
LOW/
HIGH
pin 14
12 V
9 V
0.3 V
12 V
9 V
12 V
0.3 V
February 1992
7
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
50/60 Hz Information
In the external video mode and with a resistor of 1 MΩ from pin 25 to VCC the mute is overruled by the 50/60 Hz
information from the divider system.
50/60 Hz Truth Table:
Input Signal
50 Hz
9.5
60 Hz
9.5
None
0.3
Don’t care
9.5
Don’t care
9.5
Don’t care
9.5
Pin 9/10
Pin 25
Pin 28
Pin 18
Pin 14
50 Hz
LOW
12
60 Hz
LOW
9
None
LOW
0.3
50 Hz
HIGH
12
60 Hz
HIGH
9
None
HIGH
12
VCR switch
Flywheel horizontal synchronization is desirable when receiving weak signals marred by noise but is usually unnecessary
when receiving stronger off-air signals unless certain types of interference or multipath reception are apparent. Due to
the inherent instability of VCR signals, however, the horizontal time constant should be shorter to prevent loss of
horizontal synchronization in the early part of the scan. Provision is therefore incorporated to automatically switch the
short time constant such that a strong signal instigates the 'VCR' mode and a weak signal triggers the 'TV' mode.
The connection of a switch to pin 17 provides for this to be accomplished manually and may take the form of an auxiliary
switching function associated with a designated program selector button.
The TDA4504B has a separate pin (pin 17) for the VCR switch:
pin 17
pin 17
pin 17
HIGH:
n.c.:
VCR mode
auto VCR mode
TV mode
fast time constant; ungated
slow time constant; gated
LOW:
Video-switch
Video output from the demodulator is filtered to remove the audio carrier and DC-coupled to pin 16. If AC-coupling is
employed the internal noise clamp will operate on sync. tips.
The TDA4504B provides the opportunity for a direct video connection (e.g. via a peritel connector) to be made to the
device at pin 13. Selection between internal and external video is made by applying a switching potential to pin 18.
Video switch:
pin 18
pin 18
LOW:
HIGH:
internal video
external video
Gain reduction
To prevent crosstalk between the IF stages and the horizontal oscillator when the device is operated in its external video
mode with no RF input, the TDA4504B incorporates an option to reduce IF gain by 20 dB. This is accomplished by
connecting a 39 kΩ resistor between pin 17 and ground. Omission of this component results in the IF amplifier remaining
at full gain.
In the internal video mode the resistor must be disconnected to achieve the auto-VCR mode.
February 1992
8
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
60 Hz with freedom from adjustment,
amplitude correction and maximum
interference/disturbance protection.
Horizontal synchronization
NARROW WINDOW; DIVIDER RATIO
BETWEEN 522 - 528 (60 HZ) OR 622 -
628 (50 HZ)
The horizontal synchronization circuit
of the TDA4504B has been designed
as follows:
A discriminator window checks the
vertical trigger pulse. When the
trigger pulse occurs before count 576,
the divider system operates in the
60 Hz mode otherwise the 50 Hz
mode is selected. (2 clock pulses
equal one horizontal line).
The divider switches to this mode
when the up/down counter has
reached its maximum value of 15
approved vertical sync pulses. When
the divider operates in this mode and
a vertical sync pulse is missing within
the window, the divider is reset at the
end of the window and the count
lowered by 1. At a counter value
below 10, the divider switches to the
large window mode.
• The retrace of the horizontal
oscillator occurs during the
horizontal retrace and not during
the scan period. This has the
advantage that no interference will
be visible on the screen when
receiving weak input signals. Video
crosstalk will not disturb the phase
of the horizontal locking.
The divider section operates with
different reset windows. These
windows are activated via an up/down
counter. This increases its count by 1
for each occasion the separated
vertical sync pulse is within the
selected window. On each occasion
the vertical sync. pulse is not within
the selected window, the count is
reduced by 1.
• Reduced frequency shift of the
horizontal oscillator due to noise
since the horizontal phase detector
reference signal is more
symmetrical and independent of
the supply voltage and
An anti-top flutter pulse is also
generated by the divider system. This
inhibits the horizontal phase-1
detector during the vertical sync
pulse. The width of this pulse
depends upon the divider mode. For
the large window mode the start is
generated at the divider reset. In the
narrow window mode the anti-top
flutter pulse starts at the beginning of
the first equalizing pulse. The anti-top
flutter pulse ends at count 10 for 50
Hz and count 12 for 60 Hz.
temperature.
• The phase detector current ratio for
strong and weak signals is
increased to obtain a better
performance during both VCR
playback and weak signal
reception. The switching level is
also independent of temperature
and supply voltage.
LARGE (SEARCH) WINDOW; DIVIDER
RATIO BETWEEN 488 - 722
This mode is valid for the following
conditions:
1
2
3
divider locking to another
transmitter
When out-of-sync is detected by the
coincidence detector, the divider is
switched to count 625. This results in
a stable vertical amplitude when no
input signal is available.
divider ratio found, not within
the narrow window limits
Vertical synchronization
up/down counter value of the
divider system operating in
narrow window mode, count
falls below 10.
Generation of the vertical sawtooth
(pin 3) is accomplished by a divider
that permits the production of a
vertical frequency of either 50 Hz or
February 1992
9
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134)
SYMBOL
PARAMETER
storage temperature range
MIN.
− 55
MAX.
+ 150
UNIT
Tstg
Tamb
VP
°C
°C
V
operating ambient temperature range
positive supply voltage (pin 8)
total power dissipation
− 25
−
+ 65
13.2
2.3
Ptot
−
W
ESD
All pins meet:
2000 V, 100 pF, 1500 Ω
200 V, 200 pF, 0 Ω
THERMAL RESISTANCE
SYMBOL
PARAMETER
from junction to ambient in free air
THERMAL RESISTANCE
30 K/W
Rth j-a
February 1992
10
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
CHARACTERISTICS
Tamb = 25 °C; supply 12 V; carrier 38.9 MHz negative modulation, unless otherwise specified.
SYMBOL
Supply
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VP
IP
supply voltage range (pin 8)
supply current (pin 8)
10
12
13.2
140
9
V
no input
note 1
90
−
115
6.5
−
mA
mA
V
I12
V12
start current (pin 12)
start protection level (pin 12)
I12 = 12 mA
−
16.5
IF Amplifier
V9-10(RMS) input sensitivity (RMS−value)
note 2
note 3
note 3
25
−
40
1300
5
65
−
µV
Ω
R9−10
C9−10
G9−10
∆V20
differential input resistance
differential input capacitance
gain control range
−
−
pF
dB
dB
−
74
1
−
output signal expansion for 46 dB input signal note 4
variation
−
−
V9-10
V9-10
maximum input signal
100
250
170
400
−
mV
input sensitivity at gain reduction
note 2
note 6
650
µVRMS
Video Amplifier (note 5)
Zero signal output level
V20
V20
V20
V20
V20
V20
Z20
negative modulation
4.7
2.5
2.5
4.5
−
4.9
2.7
2.7
4.7
5.5
4
5.1
2.9
2.9
4.9
−
V
positive modulation
V
sync tip (negative modulation)
white level (positive modulation)
white spot threshold level
white spot insertion level
video output impedance
note 7
note 7
V
V
V
−
−
V
−
25
−
Ω
mA
I20(int)
internal bias current of NPN emitter follower
output transistor
1.4
1.8
−
Isource
B
maximum source current
bandwidth of demodulated output signal
differential gain
10
5
−
6
2
2
2
−
−
5
5
5
mA
MHz
%
Gd
note 8
note 8
note 9
note 10
−
ϕd
differential phase
−
°
NL
video non linearity
intermodulation
−
%
1.1 MHz; blue
50
50
55
55
60
60
65
65
−
−
−
−
dB
dB
dB
dB
1.1 MHz; yellow
3.3 MHz; blue
3.3 MHz; yellow
February 1992
11
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
SYMBOL
PARAMETER
signal-to-noise ratio
CONDITIONS
MIN.
TYP.
MAX.
UNIT
S/N
note 11
see Fig.5
Vi = 10 mV input signal
52
57
−
dB
end of gain control range
residual carrier signal
57
−
62
2
−
dB
V20
V20
10
10
mV
mV
residual 2nd harmonic of carrier signal
−
2
AGC
IC11
allowed leakage of the AGC capacitor
−
−
700
nA
System switch (note 13)
AGC on sync tip level for negative modulation
signals
V32
I32
control voltage
input current
0
−
−
0.8
V
−100
−500
µA
AGC on white level for positive modulation
signals
V32
I32
control voltage
input current
2
0
−
−
12
1
V
mA
IF sync separator
II
input current
0.4
22
−
0.6
27
0.8
32
−
mA
µA
V
IO
V1
output current
clamp level
3.3
Tuner AGC
V9-10 (RMS) minimum starting point for tuner take-over
(RMS value)
−
−
0.2
mV
mV
V9-10(RMS) maximum starting point for tuner take-over
(RMS value)
100
150
−
I6
maximum tuner AGC output swing
output saturation voltage
V6 = 3 V
4
−
−
−
2
−
−
mA
mV
µA
dB
V
V6
I6
I6 = 2 mA
−
300
1
leakage current
−
∆
input signal variation complete tuner control
minimum voltage tuner take-over
∆I6 = 2 mA
0.2
−
4
V2
1
Video Switching Circuit (note 14)
EXTERNAL POSITIVE VIDEO INPUT
V13(p-p)
I13
input signal (peak-to-peak value)
VO = 2.5 V(p-p)
−
1
−
V
input current
−
1.5
1.85
5
µA
V
V13
sync tip clamping at 1 mA level
1.65
2.05
February 1992
12
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
INTERNAL VIDEO INPUT
16(p-p)
Internal video input signal (peak-to-peak
value)
VO = 2.5 V (p-p)
−
−
2
−
V
I16
input current
1.5
2.4
5
µA
V16
noise clamping at 1 mA level
2.2
2.6
V
VIDEO OUTPUT (POSITIVE VIDEO)
V15(p-p)
positive video output signal (peak-to-peak
2.3
2.5
2.7
V
value)
V15
Ibias
IO
sync tip signal
−
1
5
−
−
3
−
−
−
−
−
V
internal bias current
maximum output current
crosstalk external to internal
crosstalk internal to external
1.5
−
mA
mA
dB
dB
α
notes 12 and 15
notes 12 and 15
55
55
α
Video switch
V18
V18
I18
input voltage for internal video
−
2
−
−
−
0.8
VP
0.2
1
V
input voltage for external video
maximum current
−
V
pin 18 = 0 V
0.05
0.25
mA
mA
pin 18 = 12 V
AFC-circuit (note 16)
I22
IO
AFC sample and hold switch-off current
0.1
0.2
−
−
−
mA
mA
µA
output current
V22 = 0 V
0.4
−
0.8
1
IIL
leakage current
V21
I21
AFC output voltage swing
available output current
control slope
10.5
±0.2
−
−
11.5
−
V
−
mA
mV/kHz
V
100
6
−
V21
RO
output voltage
AFC off
5.5
6.5
AFC output resistance
measured at an
input signal
−
40
−
kΩ
amplitude of
150 µV(RMS)
V21(p-p)
output voltage swing
control slope
note 12
note 12
note 12
−
−
−
11
80
−2
−
−
−
V
mV/kHz
V
V21
output voltage shift with respect to
VI = 10 mV(RMS)
AFC polarity switch
I12
I12
I12
V12
sink current for negative slope
−
−
−
−
−
1
−
1
7
µA
mA
mA
V
sink current for positive slope
maximum current
0.1
−
V12 = 0 V
switching level
5
February 1992
13
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Sync separator (see Fig.6)
V28
I28
required sync pulse amplitude
input current
note 17
200
750
−
mV
V28 = 5 V
V28 = 0 V
−
−
8
−10
−
−
µA
mA
First control loop
∆fRX
∆fXL
PLL holding range
−
±1500 ±2000 Hz
PLL catching range
±600
±1500
−
Hz
control sensitivity to oscillator
note 18
note 19
see Fig.7
Second control loop (positive edge)
∆td/∆to
control sensitivity
control range
−
−
100
−
−
td
25
µs
Phase adjustment (via second control loop)
control sensitivity
−
−
25
−
−
µA/µs
µs
α
maximum allowed phase shift
±2
Horizontal oscillator (note 19)
fft
free running frequency
R = 34.3 kΩ
−
15625
−
Hz
C = 2.7 nF
∆fosc
∆fosc
spread with fixed external components
−
−
−
−
4
2
%
%
frequency variations with supply voltage from
10 to 13.2 V
∆fT
∆ffr
frequency variation with temperature
note 12
note 12
−
−
−1.6
−
Hz/K
%
maximum frequency deviation at start of
Horizontal output
−
10
∆fosc
frequency variation when only noise is
received
−
−
500
Hz
Horizontal output (open collector)
V29
VOL
Isink
S
output limiting voltage
output voltage LOW
maximum sink current
output signal duty factor
rise time output pulse
fall times output pulse
−
−
16.5
0.5
−
V
Isink = 10 mA
−
0.3
−
V
10
−
mA
%
ns
ns
46
260
100
−
tr
−
−
tf
−
−
Flyback input and sandcastle output (note 22, Fig.6)
I30
required input current during flyback pulse
output voltage during
burstkey
0.1
−
2
mA
V30
8
−
−
V
V
V
horizontal blanking
4
4.4
2.5
5
during vertical blanking
2.1
2.9
February 1992
14
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
SYMBOL
tW
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
pulse width
burst key at:
60 Hz
60 Hz
2.9
3.2
flyback pulse
3.3
3.7
µs
µs
50 Hz
50 Hz
3.6
4
horizontal blanking
vertical blanking
T1
T2
divider in search window
50 Hz
60 Hz
50 Hz
60 Hz
−
−
−
−
21
17
25
21
−
−
−
−
lines
lines
lines
lines
divider in narrow window
delay between the start of the sync pulse at
the video output and the burst key pulse
tBkt
tBkr
trailing edge
rising edge
60 Hz
−
−
9.4
6.1
µs
µs
4.7
5.4
VCR switch (non-VCR mode; V17 < 5 V)
R17
I17
resistance to ground
output current
−
−
−
−
5
kΩ
pin 17 = 0 V
0.5
mA
VCR switch (auto-VCR mode)
I17
I17
source current
sink current
−
−
−
−
30
30
µA
µA
VCR switch (VCR mode; V17 > 7 V)
R17
resistance to VCC
input current
−
−
−
−
5
1
−
kΩ
I17
V17 = VCC
−
mA
mV
V9-10(rms)
IF input signal for switching from fast to slow
in auto VCR mode (RMS value)
2.2
Vertical ramp generator (note 21)
I3
input current during scan
−
−
2
µA
mA
V
I3
discharge current during retrace
sawtooth amplitude (peak-to-peak value)
interlace timing of the internal pulses
−
0.8
1.9
32
−
V3(p-p)
t
Vertical output
−
−
note 12
30
34
µs
I4
available output current
maximum available output voltage
V4 = 4 V
−
−
3
mA
V
V4
I4 = 0.1 mA
4.4
5
−
February 1992
15
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Vertical feedback input
v5
DC input voltage
2.9
3.3
3.7
V
V
V5(p-p)
I5
AC input voltage (peak-to-peak value)
input current
−
−
−
−
−
1
−
3
−
−
−
12
−
µA
%
%
%
∆
tp
internal pre-correction to sawtooth
deviation amplitude
50/60 Hz
2
temperature dependency of the amplitude
note 12
2
∆T = 45 °C
Vertical guard (Vpin 30 = 2.5 V)
∆V5 active switch level at a deviation with respect note 22
to the DC feedback level
guard level LOW
−
−
1.5
2
−
−
V
V
guard level HIGH
Coincidence detector/transmitter identification (note 23)
V25
V25
V25
voltage for in-sync condition
voltage for no-sync condition
−
9.8
0.3
6.7
−
V
V
V
no signal
−
−
switching level to switch the phase detector
from fast to slow
6.2
7.2
V25
V25
hysteresis slow to fast
−
0.6
2.8
−
V
V
switching level to activate the mute function
(transmitter identification)
2.5
3.1
V25
hysteresis mute function
−
−
2.5
0.3
−
V
V
Video transmitter identification output
V14
output voltage active
no sync;
I = 1 mA
0.5
I14
I14
sink current active
−
−
−
−
5
1
mA
output current inactive (transmitter present)
µA
50/60 Hz identification (note 24)
V14
V14
output voltage at 50 Hz
output voltage at 60 Hz
−
−
Vs
9
−
−
V
V
February 1992
16
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
Notes to the characteristics
1. Supplying a current of 9 mA to pin 12 starts the horizontal oscillator. This current can be obtained via a bleed circuit
from the mains rectifier whilst the main supply for the device (VP) is obtained from the horizontal output stage. The
load current of the driver must be added to the value given above.
2. On set AGC.
3. The input impedance has been chosen such that a SAW filter can be employed.
4. Measured with 0 dB = 450 µV.
5. Measured at 10 mV (RMS) 100% input signal.
6. Projected zero point; i.e. with switched demodulator.
7. The output signal amplitude is determined by the AGC detector. For negative modulation the sync tip level is used
as reference. With positive modulation the white level is stabilized
8. Measured according to the test line given in Fig.3.
a) The differential gain is expressed as a percentage of the difference in peak amplitudes between the largest and
smallest value relative to the subcarrier amplitude at blanking level.
b) The differential phase is defined as the difference in degrees between the largest and smallest phase angle.
c) The differential gain and phase are measured with a DSB signal.
9. This figure is valid for the complete video signal amplitude (peak white to black). The non-linearity is expressed as a
percentage of the maximum deviation of a luminance step from the mean step, with respect to the mean step.
10. The test set-up and input conditions are given in Fig.5. The figures are measured at an input signal of 10 mV (RMS).
11. Measure with a source impedance of 75 Ω. The signal-to-noise ratio =
Vo black-to-white
20 log
-----------------------------------------------------------
Vn (RMS) at B = 5 MHz
12. These figures are based on sample tests.
13. By means of the system switch, two conditions can be obtained. Negative modulation with sync tip level AGC. This
is obtained with pin 32 connected to ground. Positive modulation with peak white AGC. This is obtained with pin 32
connected to the positive supply.
14. When the video switch is in the external mode the first control loop in the synchronization circuit is not switched to a
long time constant when weak signals are received.
Vo unwanted video black-to-white
15. Defined as ( 20 log )
; measured at 4.4 MHz.
-----------------------------------------------------------------------------------------
Vo wanted video-black-to-white
16. The indicated figures are measured at an input signal of 10 mV RMS. The unloaded Q-factor of the reference tuned
circuit is 70.
With very weak input signals the drive signal for the AFC circuit will have a high noise content. This noise input has
a asymmetrical frequency spectrum which will cause an offset of the AFC output voltage. To avoid problems due to
this effect a notch filter can be built into the demodulator tuned circuit. The characteristics given for weak signals are
measured without a notch circuit, with a SAW filter connected in front of the IC input signal such that the input signal
of the IC is 150 µV (RMS value).
17. The minimum value is obtained by connecting a 1.8 kΩ resistor between pins 15 and 28. The slicing level can be
varied by changing the value of this resistor (higher resistor value results in larger value of the minimum sync pulse
amplitude). The slicing level is independent of the video information.
18. Frequency control is obtained by supplying a correction current to the oscillator RC network via a resistor connected
between the phase 1 detector output and the oscillator network. The oscillator can be adjusted to the correct
frequency by short circuiting the sync separator bias network (pin 28) to +VP. To avoid the need of a VCR switch the
time constant of the phase detector at strong input signals is sufficiently short to get a stable picture during VCR
playback. During the vertical retrace period the time constant is even shorter so that the head-errors of the VCR are
February 1992
17
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
compensated at the beginning of scan. During conditions of weak signal (information derived from the AGC circuit)
the time constant is increased to obtain a better noise immunity.
19. This figure is valid for an external load impedance of 82 Ω from pin 31 to the shift adjustment potentiometer.
20. The flyback input and sandcastle output have been combined on one pin. The flyback pulse is clamped to a level of
4.5 V. The minimum current to drive the second control loop is 0.1 mA.
21. The vertical scan is synchronized by means of a divider system. Therefore no adjustment is required for the ramp
generator. The divider detects whether the incoming signal has a vertical frequency of 50 or 60 Hz and corrects the
vertical amplitude.
22. To avoid CRT screen burn due to a collapse of the vertical deflection a continuous blanking level is inserted in the
sandcastle pulse when the feedback voltage of the vertical deflection is not within the specified limits.
23. The functions in-sync/out-of-sync and transmitter identification have been combined on this pin.
The capacitor is charged during the sync pulse and discharged during the time difference between gating (6.5 / µs)
and the sync pulse in the internal video mode. When the circuit is in the external mode the capacitor is charged by
the horizontal sync pulse and discharged continuously with a small current.
24. When the mute is active no 50/60 Hz information is available.
Fig.2 Video output signal.
Fig.3 EBU test signal waveform (line 17).
February 1992
18
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
Input signal conditions
SC = Sound carrier
CC = Chrominance carrier
PC = Picture carrier
All with respect to top sync level
Vo at 4.4MHz
Value at 1.1 MHz : 20 log----------------------------------- + 3.6dB
Vo at 1.1MHz
Vo at 4.4MHz
Value at 3.3MHz : 20 log-----------------------------------
Vo at 3.3MHz
Fig.4 Test set-up intermodulation.
February 1992
19
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
Fig.5 Signal-to noise ratio as a function of the input voltage (0 dB = 100 mV).
February 1992
20
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
50 Hz 60 Hz
T1 - search window -
42 p
34 p
42 p
T2 - narrow window - 50 p
T3 - burst key pulse - 3.6 µs 3.3 µs
1
2fH
p =
--------
Fig.6 Timing diagram.
21
February 1992
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
Fig.7 Switching levels coincidence detector.
COINCIDENCE DETECTOR SWITCHING LEVELS
CONTROL SENSITIVITY
HOR.OSCILLATOR kHz / S
CONDITION
PIN 18
VIDEO SWITCH
CONDITION
PIN 17
VCR SWITCH
CONDITION
V25
T2 − T1
T3 = SCAN
Low internal video
floating
automatic
VCR
V
25 >6.7 V
and
strong signal
weak signal
11.3
1.3
7.6
1.3
V25 < 6.1 V
and
strong signal
weak signal
don't care
11.3
11.3
11.3
7.6
7.6
7.6
HIGH
forced VCR
LOW
T.V. mode
V
V
25 > 6.7 V
25 < 6.1 V
1.3
11.3
1.3
7.6
HIGH or
floating
don't care
don't care
11.3
7.6
external video
February 1992
22
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
Fig.8 Horizontal oscillator control sensitivity.
February 1992
23
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
Fig.9 Application diagram.
February 1992
24
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
PACKAGE OUTLINE
DIP32: plastic dual in-line package; 32 leads (600 mil)
SOT201-1
D
M
E
A
2
A
L
A
1
c
e
Z
(e )
w M
1
b
1
M
H
b
32
17
pin 1 index
E
1
16
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
(1)
A
A
A
2
1
(1)
(1)
Z
w
UNIT
mm
b
b
c
D
E
e
e
L
M
M
H
1
1
E
max.
min.
max.
max.
1.7
1.3
0.53
0.38
0.32
0.23
41.6
40.6
14.2
13.8
3.6
3.2
15.80
15.24
17.15
15.90
5.0
0.51
4.0
2.54
0.10
15.24
0.25
0.01
2.2
0.066
0.051
0.021
0.015
0.013
0.009
1.64
1.60
0.56
0.54
0.14
0.13
0.62
0.60
0.68
0.63
0.20
0.020
0.16
inches
0.60
0.087
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
90-01-22
95-01-25
SOT201-1
February 1992
25
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
SOLDERING
Introduction
There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and
surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for
surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often
used.
This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our
“IC Package Databook” (order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is 260 °C; solder at this temperature must not be in contact with the
joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds.
The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the
specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may
be necessary immediately after soldering to keep the temperature within the permissible limit.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more
than 2 mm above it. If the temperature of the soldering iron bit is less than 300 °C it may remain in contact for up to
10 seconds. If the bit temperature is between 300 and 400 °C, contact may be up to 5 seconds.
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
February 1992
26
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