S1A0296X01-A0B0 [SAMSUNG]
Consumer Circuit, PDIP30, 0.400 INCH, SDIP-30;
| 型号： | S1A0296X01-A0B0 |
| 厂家： | 
SAMSUNG |
| 描述： | Consumer Circuit, PDIP30, 0.400 INCH, SDIP-30 光电二极管 商用集成电路 |
| 文件： | 总16页 (文件大小：203K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
INTRODUCTION
S1A0296X01
30- SDIP- 400
The S1A0296X01 is a monolithic integrated circuit consisting
of a dual input playback amplifier, 2-channel recording ampli-
fier, outside input selecting switch, and MIC Amp.
The S1A0296X01 processes the MIC input mixing function,
which makes it ideal for application in CD or radio casette tape
players.
FEATURES
•
•
•
•
•
•
•
•
Dual input 2-channel playback amplifier
Recording / Playback function
Tape dubbing function
NAB EQ (60 us) for High speed recording function
Allowing 3 (Line 1, Line 2 and AUX) outside inputs
MIC function (Independent and mixture)
ALC function
Operating voltage (4V - 10V): recommended voltage 6 — 9V
ORDERING INFORMATION
Device
Package
30- SDIP- 400
Operating Temperature
- 25°C - +75°C
S1A0296X01-A0B0
1
S1A0296X01
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
BLOCK DIAGRAM
25
24
20
23
22
21
30
29
28
27
26
LEVEL
DET
¥Ø
20K
REC
AMP-
¥Ø
20K
REC
AMP-
+
+
X2
¥Ø
1K
¥Ø
1K
19
18
17
16
15
L1 switch
L0 switch
X2
CCA
CCA
¥Ø
20K
SWITCH
CONTROL
INV
+ AMP -
MIC swith
A/B switch
R/P switch
¥Ø
20K
¥Ø
20K
INV
+ AMP -
¥Ø
3.3K
¥Ø
1.8K
¥Ø
1.8K
¥Ø
3.3K
¥Ø
20K
¥Ø
20K
¥Ø
20K
INPUT
SELECTOR
NAB
+ AMP -
NAB
+ AMP -
¥Ø
20K
INV
+ AMP -
INPUT
SELECTOR
Voltage
Regulator
¥Ø
2K
4
6
3
5
12 13
7
10
11
2
8
9
14
1
ABSOLUTE MAXIMUM RATING ( Ta = 25°C )
Characteristic
Supply Voltage
Symbol
Value
12
Unit
V
V
mW
°C
CC
Power Dissipation
P
300
D
Operating Temperature
Storage Temperature
T
T
- 25 — +75
- 55 — +125
OPR
STG
°C
2
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
ELECTRICAL CHARACTERISTICS
S1A0296X01
(V = 6V, Ta = 25°C, f = 1kHz unless otherwise specified)
CC
Characteristic
Quiescent Circuit Current
Reference Bias Voltage
Symbol
Test Conditions
Min. Typ. Max. Unit
I
A test mode, Vcc = 4V
7
12.5
2.1
20
mA
V
CC
Vref
-
1.7
2.4
V
Play
Below 0.4V
SW1
SW1
SW1
SW1
SW1
SW1
SW1
SW1
SW1
SW1
R/P
V
V
V
V
V
V
V
V
V
REC
Open or 1.3V-1.9V
Above 3 V
Pin 15
High speed REC
A - deck
B - deck
Mic off
A/B
Open or Below 0.5 V
Above 2V
Switch
Pin 16
Control
Below 0.4V
Voltage
MIC
Mic only
Mic mix
Low
Open or 1.3V-1.9V
Above 3V
Pin 17
L0, L1
0.6--0.8V
Pin 18 / Pin 19
Voltage Gain
Max Output
High
Above 2V
G
V = 0.5Vrms
4
5.7
1
8
dB
V1
O
V
V
1
THD = 1%
0.75
-
Vrms
OM
Output Noise Voltage
1
Rg = 600W, BW = 20-20kHz
-
35u 100u Vrms
NO
Hormonic Distortion
Crosstalk Cross Talk
Ripple Rejection
Voltage Gain
THD1 V = 0.5Vrms BW = 20-20kHz
-
0.2
- 65
- 55
27
0.5
%
dB
O
CT1
RR1
V = 0.5Vrms BW = 20-20kHz
-
-
-
-
O
ripple = 0.1Vrms/120Hz
dB
Line/
AUX
G
V = 0.5Vrms
25
0.9
-
29
-
dB
V2
O
Mode
Max Output
Vom2 THD = 1%
1.2
Vrms
Output Noise Voltage
ALC Ouptut
Vno2 Rg = 600W, BW = 20-20kHz
500u 750u Vrms
VA1
Vin = 0.5Vrms
0.6
-
0.75
0.3
0.9
1.0
-
Vrms
%
Harmanic Distortion
Crosstalk Cross Talk
Ripple Rejection
THD2 V = 0.5Vrms BW = 20-20kHz
O
CT2
RR2
V = 0.5Vrms BW = 400-20kHz
-
- 65
- 30
dB
O
ripple = 0.1V/120Hz
-
-
dB
3
S1A0296X01
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
ELECTRICAL CHARACTERISTICS (Continued)
(V = 6V, Ta = 25°C, f = 1kHz unless otherwise specified)
CC
Characteristic
Voltage Gain
Symbol
Test Conditions
VO = 0.5Vrms
Vom3 THD = 1%
Vni1 Rg = 600W, BW = 20-20kHz
THD3 V = 0.5Vrms BW = 20-20kHz
Min. Typ. Max. Unit
G
23.6 25.6 27.6
dB
V3
Max Output
0.75
1
-
Vrms
Input Noise Voltage
Harmonic Distortion
Ripple Rejection
Voltage Gain
-
-
60u 150u Vrms
0.3
- 45
47
0.5
-
%
dB
O
RR3
ripple = 0.1 V/120Hz
V = 0.5Vrms
-
Line/
AUX
G
45
0.9
-
49
-
dB
V4
O
Mode
Mak Output
Vom4 THD = 1%
1.2
Vrms
Input Noise Voltage
ALC Output
Vni2
VA2
Rg = 600W, BW = 20-20kHz
Vin = 0.05Vrms
0.8m 1.2m Vrms
0.6
-
0.75
0.3
0.9
1.0
-
Vrms
%
Harmonic Distortion
Ripple Rejection
THD4 V = 0.5rms BW = 20-20kHz
O
RR4
ripple = 0.1V/120Hz
V = 0.5Vrms, Normal, 1kHz
-
- 25
dB
40.1 42.1 44.4
38.6 40.6 42.6
dB
O
Voltage Gain
G
V5
V = 0.5Vrms, High, 1kHz
dB
O
Max Output
Vom5 THD = 1%
Vni3 Rg = 600W, BW = 20-20kHz
THD5 V = 0.5Vrms BW = 20-20kHz
0.75
1
-
Vrms
Input Noise Voltage
Harmonic Distortion
Crosstalk Cross Talk
Ripple Rejection
Voltage Gain
-
240u 350u Vrms
-
0.3
- 65
- 36
64
0.5
%
dB
O
CT3
RR5
V = 0.5Vrms BW = 20-20kHz
-
-
-
-
O
ripple = 0.1V/120Hz
dB
Tape
Mode
G
V = 0.5Vrms, Normal, 1kHz
62
0.9
-
66
-
dB
V6
O
Max Output
Vom6 THD = 1%
1
Vrms
Input Noise Voltage
ALC Output
Vni4
VA3
Rg = 600W, BW = 20-20kHz
Vin = 5mVrms
2.0m 3.0m Vrms
0.6
-
0.75
0.3
0.9
1.0
-
Vrms
%
Harmonic Distortion
Crosstalk Cross Talk
Ripple Rejection
THD6 V = 0.5Vrms BW = 20-20kHz
O
CT4
RR6
V = 0.5Vrms BW = 20-20kHz
-
- 60
- 17
dB
O
ripple = 0.1V/120Hz
-
-
dB
4
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
PIN DESCRIPTION
S1A0296X01
Pin No.
Symbol
I/O
Internal Equivalence Circuit
VCC
Playback Amplifier
A - input
1/4
A - input
1/4
27/30
GND
VCC
Playback Amplifier
B-input
2/3
B - input
2/3
27/30
GND
5
6
GND
GND
-
VCC
VREF
Reference Voltage
Supply Voltage
6
GND
-
7
V
CC
LINE1
External Input
Terminal
LINE1
input
8/11
§Ú
§Ú
§Ú
30
30
30
VCC
LINE2
External Input
Terminal
10/13
9/12
8/11
LINE2
input
9/12
10/3
AUX
AUX
input
External Input
Terminal
GND
5
S1A0296X01
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
PIN DESCRIPTION (Continued)
Pin No.
Symbol
I/O
Internal Equivalence Circuit
VCC
MIC
§Ú
30
14
Input Terminal
§Ú
20
input
14
2§Ú
GND
R/P
15
16
17
18
Selecting Terminal
switch
V C C
A/B
A, B Playback Input
Selecting Terminal
§Ú
20
15
17
switch
MIC
MIC Input
switch
Selecting Terminal
§Ú
12
§Ú
12
G N D
V C C
L0
switch
§Ú
20
16
18
19
EXTERNAL LINE
Selecting Terminal
L1
19
switch
§Ú
12
§Ú
10
G N D
REC Amplifier,
20/24
21/23
REC NF
VCC
negative terminal
20§Ú
100
21/23
REC Amplifier
output terminal
REC output
20/24
1§Ú
GND
V C C
Ripple Rejection
terminal of ALC
detecting output
ALC
R/R
22
2 2
G N D
6
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
PIN DESCRIPTION (Continued)
S1A0296X01
Pin No.
Symbol
I/O
Internal Equivalence Circuit
VCC
Monitor
output
Monitor
100
§Ú
§Ú
20
20
25/26
25/26
Output Terminal
GND
VCC
27/30
PB NF
Playback Amplifier
2/3
27/30
GND
VCC
Playback Amplifier
output terminal
for NAB EQ
28/29
PB output
int
§Ú
1.8
§Ú
3.3
28/29
GND
7
S1A0296X01
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
APPLICATION INFORMATION
1. SWITCH INPUT CONDITION
Pin Function
Pin 15
LOW
Open
High
Remarks
— NAB automatically alters to High EQ.
within ( pin 15 = high ) high speed rec.
mode.
Record
only
Play only
High speed record
REC/PB switch
—
Due to external RC time constant, it is
possible to delay the time of
switching.
Pin 16
A/B deck switch
B deck enable
Mic mixing
A deck enable
Mic off Mic only
—
It is prohibited to mic input into the (pin
15 = high) high speed rec. mode.
Pin 17
Mic switch
Function Condition
Pin 18
Open
High
Pin 19
High
Remarks
Line 1
Line 2
Aux
High
Open
High
In Mic only mode ( pin 17 = open ), all ( line 1, line 2, AUX,
Tape function ) will be somewhat disabled.
Refer to note 3 open condition.
High
Tape
Open
Open
•
•
According to each mode, function selection basically moves due to the conditions of above table 1 and 2.
Each function pin possesses characteristic representations of functions not in movement, in respect to its
representing functions.
•
By the virtue of each pins’ combinations changing frequency, it is wise to set up or plan the circuit according to
the input conditions of above Tables 1 and 2.
8
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
S1A0296X01
2. DESCRIPTION OF SWITCH FUNCTION
Controlling the selection switch of pin 15 play / record
Pin 15 is not constructed with logic from inside. However, it is constructed by controlling 3 level switches caused by
external voltage input. As soon as the power is on, it really doesnt’ matter if the attach switch is in play (low mode).
Nevertheless, if open (record mode), it will turn to record stage and depending on it, the ALC circuit will function.
When and after the source of electric power is approved, all of the circuits will become unstable and the results are
unknown.
Sometime in the beginning, it is necessary to find a method to stop ALC movement for a set period of time, and is
developed through using the original switch period.
Immediately after the approval of the electric
power, source through 100mA’s current source
with capacitor and resistance in Pin 15, Pin 15’s
current is gradually increased. Until it reaches
the set voltage level, the record state cannot be
100mA
accomodated. While under this process, the cir-
Control
Voltage
15
47mF
cuit in record part will not receive any inputs,
and by discharging the generated increase in
voltage of ALC P/R, it will turn it into initiation.
12KW
During of high speed recording, 3.5V of control
voltage must be inflicted. But under this condi-
tion, it is wise to operate at high speed record-
ing after delaying the time by connecting the
resistance with the outside electrical series, or
approve it first and then apply the procedure.
NOTE 1 : 3-step input switch-controlled
voltage ( Pin 15, 17 ).
In the 3-step switch recording system, Pin 15
which decides to play exists and Mic mode-
deciding function P17 exists as well. Voltage in
the high mode is more than enough. Low
mode’s voltage will be achieved if the voltage
goes below 0.3 V. The open mode does not
deal with any other voltage, so just open it.
Open
High
Low
switch input
control
2.6V
0.5V
0.9V
2.1V
open
state
0 ~ 0.3V
3.5V ~ VCC
9
S1A0296X01
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
Pin 16 A/B deck selecting switch control
Pin 16 is not set up interiorily through logic, but depending on the outside voltage input, and the changing proce-
dure of deck A or B, it exists as voltage range.
In order to delete the pop noise which occurs at the time of A/B changing, this transmission range is selected under
the consideration of its design.
Even by delaying and reducing or creasing Pin 16’s input voltage, the pop noise changes in sound cannot be
heard by our naked ear.
NOTE 2 : Double input switch (Pin16) control voltage
100uA
The 2-step switch is Pin 16 which selects the A/B
deck.
10K
This control voltage is as shown in Figure 4.
16
VCC
1. High mode’s voltage is greater than 2 V, which is
more than sufficient. It is nice to have the low mode in
0.3 V or just open it as it is. When it is opened, the
Pin's voltage is almost zero and in turn results in low
voltage.
§Ú
10
C1 : 22 ~ 47uF
2. As seen in Figure 4 graph, if 0 V is input into DC
direction under low condition, special blazing fire
could result, so it is wise to switch to low when using
at open state or at pull down resistance state.
Bias
A - on
B - off
B - on
A - off
1.2V
0.9V
1.6V
Control Voltage
80 mSec
at C1:22uF
NOTE 3: Double input switch (Pin 18, Pin 19) con-
trolled voltage. It is constructed into logic formation
different from A/B switch, and the input condition
which applies to binary switch formation seems
rather difficult. About Low = 0.6 to 0.8V should be
inserted.
Pin 6 connects to Pin 18, Pin 19 with the resisting
value of 15. At open state, it becomes 0.7 Volt. High
is more than 2V.
F
Bias
ON
* 2
Open
State
OFF
0.9V
1.6V
Control Voltage
About 10mV at floating
10
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
S1A0296X01
3. HEAD CONNECTION METHOD
Tape Head connecting method
By the virtue of NAB amplifiers input construction layout of this product, the input voltage bias is systemized to be
supplied from an outside source and head connection follows the constructed plan/layouts style shown below.
2
3
*N
1
4
6
15
R
16
7
21
23
+
REC
P
H
+
+
OSC
+
+
VCC
In employing the record signal, the A/B switch input of pin 16 must be turned into B deck mode(It only applies to
the above situation). For your conviences A and Bs extremetie are designed to be replaced. If the record OSCs
ingredients exist in playback input, it will have damaging effect within the S1A0296X01. That is why precautions
are neccessary. And within the recording output pin the ALC DET is internally connected. If recording AC bias
appears in this terminal, the ALC moves in a distorted manner. Use the trap to make the recording output terminal
bias as small as possible and choose the appropriate OSC frequency for the trap. Also at play mode, since the
recording terminals output D.C is bound by 2.1V and abandon it.
NOTE: Use/apply theabove switch if OSC frequency find within record mode at the system for mation.
11
S1A0296X01
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
Head Input Circuit (FET switch)
RECORD OUT
REC(High)
Play(Open)
At this point, in order to
make OSC as low as
possible, control the OSC
frequency and trap.
To Pin6 (Vref)
+
+
PLAY HEAD
R/P HEAD
Play(High)
REC(Open)
In case the capacitor is not sufficiently
large enough, eruption will occur at the
time of recording blocking, within the
specfied frequency.
Tape in-B
Tape in-A
After swithching the play, head signal will be
input into tape. Be aware of forming Hums.
Rec out
21/23
20/24
Rec NF
Open the capacitor between the output and the NF
12
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
4. OUTSIDE INPUT
S1A0296X01
This product is designed to accomdate 3 types of outside input and 3 paired input terminals are also present as
well. It is possible to use each of them independently and their selection lies within the switch output condition of
Table 1 and 2. Under the condition of usage it is wise to be aware of situations since it could be input through
reduction from outside. Take as a reference when input impedance is reduced to approximately 30, especially an
the input dynamic range is 0.6Vrms.
The input monitor output gain is 6dB, and take into if account that record outputs gain is 26dB.
§Ú
§Ú
§Ú
30
30
30
8/11
Line 1
25/26
0dB
0dB
0dB
6dB
Monitor Output
9/12
Line 2
21/23
26dB
10/13
AUX
Record Output
NAB
AMP
5. MIC INPUT
The MIC amplifiers advantage is 20 dB. Attention MIC input signal level at MIC mixing mode or another input signal
with mixing input signal can be reduce becaused of ALC operating from accessing MIC input signal.
+
14
MIC
Mic input
+
17
Mic switch
VCC
13
S1A0296X01
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
6. NAB CIRCUIT DESIGN
NAB device is comprised of R1, R2, C1 and its
impedance is expressed as follows.
to input selector
R2 = 1.8K
1 + j w C1 { R1 R2 / ( R1 + R2)}
Z =(R1 + R2)
H
+
-
28/29
N
1 + j w C1 R1
R2 = 3.3K
27/30
And
R1=82K
T1 = C1R1,
T2 = C1 (R1//R2),
C1=0.039uF
Rnt = 82
47uF
T1 = 3198msec
T2 = 123msec(normal) ± 24msec,
= 70msec(high) ±14msec
NOTE: Internal resistance R2s’ processor distribution
is + 20%
Frequency gain cab be easily discovered as given.
Gv = 20log ((Rnf + Z) / Rnf)
7. ETC
When in High speed copying mode, the ALC will be off and the actual recorded system is used while for normal
speed it is recorded through ALC.
Within the switch input, it is advisable to keep the voltage below 6V for security.
It may consider the external peaking circuit for recording at high speed recording mode.
The head switching is used as mechanical switch or FET switch for recording circuit.
14
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
8. AMP GAIN DIAGRAM OF EACH MODE
S1A0296X01
¡ æ
8 - 1. Tape Playback
Monitor output
36dB/1KHz
0dB
0dB
6dB (Gain)
MONAMP
NABAMP
-64dBm
Input selector
INVAMP
-28dBm
-28dBm
-22dBm
-28dBm
¡ æ
8 - 2. EXT Playback
Monitor output
0dB
0dB
6dB (Gain)
MONAMP
Input selector
INVAMP
-28dBm
-28dBm
-22dBm
-28dBm
¡ æ
8 - 3. MIC Playback
Monitor output
20dB
0dB
0dB
6dB (Gain)
MONAMP
MICAMP
-48dBm
Input selector
INVAMP
-28dBm
-28dBm
-22dBm
-28dBm
¡ æ
8 - 4. Tape Playback
Record output
36dB/1KHz
0dB
0dB
28dB (Gain)
RECAMP
NABAMP
-68dBm
Input selector
INVAMP
-32dBm
-32dBm
-4dBm
-32dBm
¡ æ
8 - 5. EXT Playback
Record output
0dB
0dB
28dB (Gain)
RECAMP
Input selector
INVAMP
-32dBm
-32dBm
-4dBm
-32dBm
¡ æ
8 - 6. MIC Playback
Record output
20dB
0dB
0dB
28dB (Gain)
RECAMP
MICAMP
-52dBm
Input selector
INVAMP
-32dBm
-32dBm
-4dBm
-32dBm
15
S1A0296X01
DOUBLE DECK SYSTEM FOR RADIO CASSETTE
TEST CIRCUIT
Vcc
TMON1 TMON2
TREC1
TREC2
47
47
m F
m F
82
W
82
W
10
10
m F
m F
10
10
10
10
m F
m F
m F
m F
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
S1A0296X01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
VT1
VT2
VT3
VT4
Vcc
VE1
VE2
VE3
VE4
VE5
VE6
VM
16
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