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CXA1498M Datasheet

  • CXA1498M

  • Recording/Playback Equalizer Amplifier for Stereo Tape Recor...

  • 13頁(yè)

  • SONY   SONY

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CXA1498S/M
Recording/Playback Equalizer Amplifier for Stereo Tape Recorder
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
鈥?/div>
Recording equalizer amplifier
脳
2
(Monolithic filter eliminates the need for external
resonance circuit)
鈥?/div>
AGC (automatic gain control)
脳
2
鈥?/div>
Playback equalizer amplifier
脳
2
(Variable resistor eliminates the need for external
feedback resistor)
鈥?/div>
Electronic switch for playback head
(Changes between A and B decks)
鈥?/div>
Electronic switch for tape equalization
(120碌s/70碌s) (Independently for A and B decks)
鈥?/div>
Electronic switch for metal tapes
鈥?/div>
Electronic switch for normal/high speed dubbing
(Effective for both REC EQ and PB EQ)
鈥?/div>
Recording mute function
(Soft mute is possible through use of an external
time constant circuit)
鈥?/div>
DC controllable for fade IN/OUT
(Controls recording mute function)
鈥?/div>
Playback mixing output pin provided
(For tune selection)
鈥?/div>
Use of this IC simplifies the construction of double
cassette dubbing system
Block Diagram and Pin Configuration
(Top View)
DECK A EQ
PB FB1 (R)
PB FB2 (R)
REC MUTE
REC IN (R)
PB IN1 (R)
AGC (R)
REC OUT (R)
PB IN2 (R)
PB OUT (R)
DECK A/B
CXA1498S
30 pin SDIP (Plastic)
CXA1498M
30 pin SOP (Plastic)
Applications
Recording/playback equalizer amplifier, playback
mixing amplifier and AGC for analog stereo tape
recorders
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
(Ta = 25擄C)
鈥?/div>
Supply voltage
V
CC
12
鈥?/div>
Operating temperature
Topr 鈥?0 to +75
鈥?/div>
Storage temperature
Tstg 鈥?5 to +150
鈥?/div>
Allowable power dissipation
P
D
SDIP
930
SOP
630
Recommended Operating Condition
Supply voltage
V
CC
4.5 to 10.0
V
擄C
擄C
mW
mW
V
RFC
RFS
VG
27
30
28
29
PB IN1 PB IN2 PB FB1 PB FB2
100k
210k
DECK
A/B
DECK- B PB
DECK- A
26
PB
OUT
RFS
25
23
21
22
24
RFC
DECK
DECK
REC
A/B
-A EQ
MUTE
20
VG
30k
19
AGC
30k
18
REC
IN
17
V
CC
V
CC
V
CC
REC EQ
REC EQ
GND
GND
14
16
REC
OUT
PB EQ
CONTROL
MUTE
CONT
VGS
DECK- A
DECK
A/B
DECK- B PB
210k
100k
PB FB2
3
4
PB
OUT
MS
OUT
DECK
-B EQ
8
AGC
TC
11
BIAS &
I REF
REC EQ
CONTROL
AGC DET
PB IN1
1
PB IN2
2
PB FB1
5
6
I REF
7
SPEED
9
METAL
10
AGC
12
REC
IN
13
REC
OUT
15
DECK B EQ
PB FB2 (L)
REC IN (L)
PB IN1 (L)
METAL
PB IN2 (L)
GND
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.
鈥?鈥?/div>
REC OUT (L)
PB FB1 (L)
MS OUT
PB OUT (L)
AGC TC
AGC (L)
I REF
SPEED
E91860C49-ST

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