933818070112_技术文档

INTEGRATED CIRCUITS

DATA SHEET

TDA8440

Switch for CTV receivers

November 1985

Product speciﬁcation

File under Integrated Circuits, IC02

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

GENERAL DESCRIPTION

Features

The TDA8440 is a versatile video/audio switch, intended to

be used in CTV receivers equipped with an AUXILIARY

VIDEO/AUDIO plug.

• Combined analogue and digital circuitry gives maximum

flexibility in channel switching

• 3-state switches for all channels

• Selectable gain for the video channels

• Sub-addressing facility

It provides two 3-state switches for audio channels and

one 3-state switch for the video channel and a video

amplifier with selectable gain (times 1 or times 2).

• I²C bus or non-I²C bus mode (controlled by d.c.

The integrated circuit can be used in conjunction with a

microcontroller from the MAB8400 family, and is controlled

via a bidirectional I²C bus. Sufficient sub-addressing is

provided for the I²C bus mode. It can also be controlled

directly by d.c. switching signals.

voltages)

• Slave receiver in the I²C bus mode

• External OFF command

• System expansion possible up to 7 devices (14 sources)

• Static short-circuit proof outputs

QUICK REFERENCE DATA

Supply voltage range

V_15-4

I₁₅

10 to 13,2 V

typ.

max.

33 mA

50 mA

Supply current (without load)

Storage temperature

T_stg

max. + 125 °C

0 to + 70 °C

Operating ambient temperature range

T_amb

PACKAGE OUTLINE

18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 19.

November 1985

2

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

S0, S1, S2 and OFF (pins 11, 13, 6 and 2) connected to V_Por GND.

If more than 1 device is used, then the outputs and the pins 8 (bias decoupling of the audio inputs) may be connected in parallel.

Fig.1 Block diagram and test circuit.

November 1985

3

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

FUNCTIONAL DESCRIPTION

The TDA8440 is a monolithic system of switches and can be used in CTV receivers equipped with an AUXILIARY

VIDEO/AUDIO plug.

The IC incorporates 3-state switches; they comprise:

a) An electronic video switch with selectable gain (times 1 or times 2) for switching between an internal video signal

(from the IF amplifier) and an AUXILIARY input signal.

b) Two electronic audio switches, for two sound channels (stereo or dual language), for switching between internal

audio sources and signals from the AUXILIARY VIDEO/AUDIO plug.

A selection can be made between two input signals and an OFF-state. The OFF-state is necessary if more than one

TDA8440 device is used.

The SDA and SCL pins can be connected to the I²C bus or to d.c. switching voltages. Inputs S₀(pin 11), S₁(pin 13), and

S₂(pin 6) are used for selection of sub-addresses or switching to the non-I²C mode. Inputs S₀, S₁and S₂can be

connected to the supply voltage (H) or to ground (L). In this way no peripheral components are required for selection.

Table 1 Sub-addressing

SUB-ADDRESS

S₂

S₁

S₀

A₂

A₁

A₀

L

H

L

0

1

0

1

0

1

0

1

0

L

H

L

1

L

H

L

1

H

0

L

H

L

0

H

1

H

non I²C addressable

NON-I²C BUS CONTROL

If the TDA8440 switching device has to be operated via the AUXILIARY VIDEO/AUDIO plug, inputs S₂, S₁and S₀must

be connected to the supply line (12 V).

The sources (internal and external) and the gain of the video amplifier can be selected via the SDA and SCL pins with

the switching voltage from the AUXILIARY VIDEO/AUDIO plug:

• Sources I are selected if SDA = 12 V (external source)

• Sources II are selected if SDA = 0 V (TV mode)

• Video amplifier gain is 2 × if SCL = 12 V (external source)

• Video amplifier gain is 1 × if SCL = 0 V (TV mode)

If more than one TDA8440 device is used in the non-I²C bus system, the OFF pin can be used to switch off the desired

devices. This can be done via the 12 V switching voltage on the AUXILIARY VIDEO/AUDIO plug.

• All switches are in the OFF position if OFF = H (12 V)

• All switches are in the selected position via SDA and SCL pins if OFF = L (0 V)

November 1985

4

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

I²C BUS CONTROL

Detailed information on the I²C bus is available on request.

Table 2 TDA8440 I²C bus protocol.

STA

A₆A₅A₄A₃A₂A₁A₀R/W AC D₇D₆D₅D₄D₃D₂D₁D₀

AC

STO

STA

=

start condition

A₆

1

0

1

Fixed address bits

A₅

A₄

A₃

A₂

sub-address bit, ﬁxed via S₂input

sub-address bit, ﬁxed via S₁input

sub-address bit, ﬁxed via S₀input

read/write bit (has to be 0, only write mode allowed)

acknowledge bit (= 0) generated by the TDA8440

1 audio la is selected to audio output a

0 audio la is not selected

A₁

A₀

R/W

AC

D₇

D₆

D₅

D₄

D₃

D₂

D₁

D₀

STO

1 audio lla is selected to audio output a

0 audio lla is not selected

1 audio lb is selected to audio output b

0 audio lb output is not selected

1 audio llb is selected to audio output b

0 audio llb is not selected

1 video l is selected to video output

0 video l is not selected

1 video ll is selected to video output

0 video ll is not selected

1 video ampliﬁer gain is times 2

0 video ampliﬁer gain is times 1

1 OFF-input inactive

0 OFF-input active

stop condition

OFF FUNCTION

With the OFF input all outputs can be switched off (mode high ohmic), depending on the value of D₀.

November 1985

5

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

D₀/OFF gating

D₀

0 (off input active)

0

OFF INPUT

OUTPUTS

H

L

OFF

in accordance with last deﬁned

D₇- D₁(may be entered while OFF = HIGH)

1 (off input inactive)

1

H

L

in accordance with D₇- D₁

Power-on reset

The circuit is provided with a power-on reset function.

When the power supply is switched on an internal pulse will be generated that will reset the internal memory S₀, in the

initial state all the switches will be in the off position and the OFF input is active (D₇- D₀= 0) (I²C mode), position defined

via SDA and SCL inputs (non-I²C mode).

When the power supply decreases below 5 V a pulse will be generated and the internal memory will be reset. The

behaviour of the switches will be the same as described above.

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

MIN. TYP. MAX.

UNIT

Supply voltage

pin 15 V_P

−

14

V

Input voltage range

pin 17 V_SDA

pin 18 V_SCL

−0,3

−

V_P+ 0,3 V

pin 2

V_OFF

pin 11 V_S0

pin 13 V_S1

pin 6

V_S2

Video output current

pin 16 −I₁₆

50

mA

Storage temperature range

Operating ambient temperature range

Junction temperature

T_stg

T_amb

T_j

−

+ 125

+ 70

+ 150

°C

0

−

THERMAL RESISTANCE

PARAMETER

SYMBOL

VALUE

UNIT

From junction to ambient in free air

R_{th j−a}

50

K/W

November 1985

6

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

CHARACTERISTICS

T_amb= 25 °C; V_P= 12 V; unless otherwise speciﬁed

PARAMETER

Supply

SYMBOL

MIN.

TYP.

MAX.

UNIT

Supply voltage

V_15-4

10

−

13,2

V

Supply current (without load)

I₁₅

−

37

50

mA

Video switch

Input coupling capacitor

C₁C₃

A_3-16

A_1-16

V_3-4

100

−1

+ 5

−1

+ 5

−

nF

dB

V

Voltage gain (times 1; SCL = L)

(times 2; SCL = H)

0

+ 1

+ 7

+ 1

+ 7

4,5

−

+ 6

0

Voltage gain (times 1; SCL = L)

(times 2; SCL = H)

+ 6

−

Input video signal amplitude (gain times 1)

Output impedance

V_1-4

−

V

Z_16-4

−

7

Ω

Output impedance in ‘OFF’ state

Isolation (off state) (f_o= 5 MHz)

Signal-to-noise ratio (note 3)

Output top-sync level

100

60

2,4

−

kΩ

dB

V

−

S/S + N

V_16-4

G

−

2,8

−

3,2

3

Differential gain

%

Minimum crosstalk attenuation (note 2)

Supply voltage rejection (note 4)

Bandwidth (1 dB)

V_16-4

RR

60

36

10

−

dB

MHz

−

B

−

Crosstalk attenuation for interference

caused by bus signals (source

impedance 75 Ω)

α

60

−

dB

Audio switch a and b

Input signal level

V_9-4(rms)

V_10-4(rms)

V_5-4(rms)

V_7-4(rms)

Z_9-4

−

2

V

−

2

V

−

2

V

−

2

V

Input impedance

50

−

100

−

kΩ

Ω

Z_10-4

−

Z_5-4

−

Z_7-4

−

Output impedance

Z_12-4

10

−

Z_14-4

−

Ω

Output impedance (off state)

Z_14-4

100

−

kΩ

November 1985

7

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

PARAMETER

SYMBOL

V_9-12

MIN.

TYP.

MAX.

+ 1

UNIT

dB

Voltage gain

−1

90

−

0

−

V_10-12

V_5-14

V_7-14

+ 1

−

dB

%

Isolation (off state) (f = 20 kHz)

Signal-to-noise ratio (note 5)

Total harmonic distortion (note 7)

Crosstalk attenuation for interferences

caused by video signals (note 6)

Weighted

S/S + N

−

THD

0,1

α

80

−

dB

Unweighted

Crosstalk attenuation for interferences

caused by sinusoidal sound signals

(note 6)

α

80

−

dB

Crosstalk attenuation for interferences

caused by the bus signal (weighted)

(source impedance = 1 kΩ)

80

50

−

dB

Supply voltage rejection

RR

B

dB

Bandwidth (−1 dB)

kHz

I²C bus inputs/outputs SDA (pin 17) and SCL

(pin 18)

Input voltage HIGH

V_IH

V_IL

I_IH

3

−

5

V_P

+ 1,5

10

V

Input voltage LOW

Input current HIGH⁽¹⁾

Input current LOW⁽¹⁾

−0,3

V

−

µA

V

I_IL

10

Output voltage LOW at I_OL= 3 mA

Maximum output sink current

Capacitance of SDA and SDL inputs,

pins 17 and 18

V_OL

I_OL

0,4

−

mA

C_I

−

10

pF

Sub-address inputs S₀(pin 11), S₁(pin 13), S₂(pin 6)

Input voltage HIGH

Input voltage LOW

Input current HIGH

Input current LOW

V_IH

V_IL

I_IH

3

−

V_P

+ 0,4

10

V

−0,3

−

V

µA

I_IL

−50

0

OFF input (pin 2)

Input voltage HIGH

Input voltage LOW

Input current HIGH

Input current LOW

V_IH

V_IL

I_IH

+3

−

V_P

+ 0,4

20

V

−0,3

−

V

µA

I_IL

−10

2

November 1985

8

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

PARAMETER

SYMBOL

t_BUF

MIN.

TYP.

MAX.

UNIT

µs

Bus free before start⁽¹¹⁾

Start condition set-up time

Start condition hold time

SCL, SDA LOW period

4

−

1

−

0

4

−

1

t_s(STA)

t_h(STA)

t_LOW

t_HIGH

t_r

µs

SCL, HIGH period

SCL, SDA rise time

SCL, SDA fall time

t_f

0,3

−

Data set-up time (write)

Data hold time (write)

t_s(DAT)

t_h(DAT)

t_s(CAC)

t_h(CAC)

t_s(STO)

−

Acknowledge (from TDA8440) set-up time

Acknowledge (from TDA8440) hold time

Stop condition set-up time

2

−

Notes to the characteristics

1. Also if the supply is switched off.

2. Caused by drive on any other input at maximum level, measured in B = 5 MHz, source impedance

for the used input 75 Ω,

V_out

crosstalk = 20 log---------------------

V_INmax

˙

V_Ovideo noise (p-p) (2 V)

3. S/N = 20 log

.

----------------------------------------------------------------------

V_Onoise rms B = 5 MHz

V_rsupply

4. Supply voltage ripple rejection = 20 log

at f = max. 100 kHz.

--------------------------------

V_ron output

˙˙

V_Onominal (0,5 V)

5. S/N = 20 log

.

-------------------------------------------------------

V_Onoise B = 20 kHz

6. Caused by drive of any other input at maximum level, measured in B = 20 kHz, source impedance

of the used input = 1 kΩ,

V_out

crosstalk = 20 log

according to DIN 45405 (CCIR 468).

--------------------

V_inmax

7. f = 20 Hz to 20 kHz.

8. All outputs are short-circuit proof (static).

9. The inputs and output (apart from SDA, SCL and OFF) withstand tests of MIL-STD-883 C. It is advisable to

connected series resistors to these pins.

10. Timings t_{S, DAT}and t_{H, DAT}deviate from the I²C bus specification. After reset has been activated, transmission may

only be started after a 50 µs delay.

11. I²C bus load conditions are as follows:

4kΩ pull-up resistor to + 5 V; 200 pF to GND.

All values are referred to V_IH= 3 V and V_IL= 1,5 V.

November 1985

9

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

Fig.2 Timing diagram I²C bus.

November 1985

10

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

PACKAGE OUTLINE

DIP18: plastic dual in-line package; 18 leads (300 mil)

SOT102-1

D

M

E

A

2

A

1

L

c

e

w M

Z

b

1

(e )

1

b

2

18

10

M

H

pin 1 index

E

1

9

0

5

10 mm

scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

(1)

Z

A

2

(1)

1

w

UNIT

mm

b

c

D

E

e

L

M

H

1

2

1

E

max.

min.

max.

1.40

1.14

0.53

0.38

1.40

1.14

0.32

0.23

21.8

21.4

6.48

6.20

3.9

3.4

8.25

7.80

9.5

8.3

4.7

0.51

3.7

2.54

0.10

7.62

0.30

0.254

0.01

0.85

0.055 0.021 0.055 0.013

0.044 0.015 0.044 0.009

0.86

0.84

0.26

0.24

0.15

0.13

0.32

0.31

0.37

0.33

inches

0.19

0.020

0.15

0.033

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

93-10-14

95-01-23

SOT102-1

November 1985

11

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

with the joint for more than 5 seconds. The total contact

time of successive solder waves must not exceed

5 seconds.

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.

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 (T_{stg 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

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).

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.

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

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.

PURCHASE OF PHILIPS I²C COMPONENTS

Purchase of Philips I²C components conveys a license under the Philips’ I²C patent to use the

components in the I²C system provided the system conforms to the I²C specification defined by

Philips. This specification can be ordered using the code 9398 393 40011.

November 1985

12


型号：	933818070112
厂家：	NXP
描述：	IC 3-CHANNEL, CROSS POINT SWITCH, PDIP18, PLASTIC, DIP-18, Multiplexer or Switch 光电二极管
文件：	总12页 (文件大小：66K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

933818070112 [NXP]

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