CXA1498S

Manufacturer Part NumberCXA1498S
DescriptionRecording/Playback Equalizer Amplifier for Stereo Tape Recorder
ManufacturerSony
CXA1498S datasheet
 


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Recording/Playback Equalizer Amplifier for Stereo Tape Recorder
For the availability of this product, please contact the sales office.
Description
The CXA1498S/M is a bipolar IC designed as
equalizer amplifier for tape redorder recording/
playback. This IC is particularly well-suited for double
cassette deck applications. An on-chip filter serves to
greatly reduce the number of external parts.
Features
• Recording equalizer amplifier
(Monolithic filter eliminates the need for external
resonance circuit)
• AGC (automatic gain control)
• Playback equalizer amplifier
(Variable resistor eliminates the need for external
feedback resistor)
• Electronic switch for playback head
(Changes between A and B decks)
• Electronic switch for tape equalization
(120µs/70µs) (Independently for A and B decks)
• Electronic switch for metal tapes
• Electronic switch for normal/high speed dubbing
(Effective for both REC EQ and PB EQ)
• Recording mute function
(Soft mute is possible through use of an external
time constant circuit)
• DC controllable for fade IN/OUT
(Controls recording mute function)
• Playback mixing output pin provided
(For tune selection)
• Use of this IC simplifies the construction of double
cassette dubbing system
Block Diagram and Pin Configuration (Top View)
30
29
28
PB IN1
PB IN2
PB FB1
PB FB2
100k
210k
DECK
DECK- B
PB
A/B
DECK- A
DECK- A
DECK
PB
DECK- B
A/B
210k
100k
PB IN1
PB IN2
PB FB1
PB FB2
1
2
3
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
CXA1498S/M
30 pin SDIP (Plastic)
2
2
Applications
2
Recording/playback equalizer amplifier, playback
mixing amplifier and AGC for analog stereo tape
recorders
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
• Operating temperature
• Storage temperature
• Allowable power dissipation
Recommended Operating Condition
Supply voltage
27
26
25
24
23
22
PB
RFS
RFC
DECK
DECK
OUT
A/B
-A EQ
PB EQ
CONTROL
BIAS &
REC EQ
I REF
CONTROL
PB
MS
DECK
OUT
OUT
I REF
SPEED
-B EQ
METAL
4
5
6
7
8
9
– 1 –
CXA1498S
CXA1498M
30 pin SOP (Plastic)
V
CC
Topr
–20 to +75
Tstg
–65 to +150 °C
P
SDIP
D
SOP
V
4.5 to 10.0
CC
19
18
21
20
17
REC
VG
AGC
REC
V
REC
CC
MUTE
IN
OUT
30k
V
30k
CC
MUTE
CONT
VGS
REC EQ
AGC DET
REC EQ
GND
AGC
REC
REC
TC
AGC
IN
GND
OUT
10
11
12
13
14
12
V
°C
930
mW
630
mW
V
16
15
E91860C49-ST

CXA1498S Summary of contents