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CXA2500N Datasheet

  • CXA2500N

  • Dual REC/PB Preamplifier

  • 222.98KB

  • 11頁

  • SONY   SONY

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CXA2500M/N
Dual REC/PB Preamplifier
Description
The CXA2500M/N is a dual recording/playback pre-
amplifier system bipolar IC which has been developed
for the low voltage operating cassette tape recorder.
Features
鈥?/div>
Low quiescent current (V
CC
= 2V)
PB: I
CC
= 3.2mA (typ.)
REC: I
CC
= 5.2mA (typ.)
鈥?/div>
Very few external parts
鈥?/div>
Built-in Metal/Normal selection switch
鈥?/div>
Small switching noise due to internal transient
muting
Applications
3V headphone radio cassette recorders
Structure
Bipolar silicon monolithic IC
Bock Diagram
PB OUTPUT (A)
MIC INPUT (B)
PB EQ
SWITCH (B)
CXA2500M
24 pin SOP (Plastic)
CXA2500N
24 pin SSOP (Plastic)
Absolute Maximum Ratings
(Ta = 25擄C)
鈥?/div>
Supply voltage
鈥?/div>
Operating temperature
鈥?/div>
Storage temperature
CXA2500M
CXA2500N
Operating Conditions
Supply voltage PB
REC
V
CC
Topr
Tstg
P
D
600
470
mW
mW
7
鈥?0 to +75
鈥?5 to +150
V
擄C
擄C
鈥?/div>
Allowable power dissipation
V
CC
V
CC
1.2 to 3.5
1.6 to 3.5
V
V
LINE
OUTPUT (B)
REC DRIVE
INPUT (B)
REC DRIVE
OUTPUT (B)
PB PRE
INPUT (B)
24
23
22
21
20
19
18
17
16
15
14
PB
MIC
GCA
AMP
AGC
REF
AGC
DET
LINE
REC
PB/
REC
NORM/
METAL
AMP
MIC
6dB
1
2
GCA
22dB
3
4
PB
12dB
LINE
鈥?.3dB
REC
20.5dB
9
10
11
12
TAPE/
TUNER
5
6
7
8
PB EQ
SWITCH (A)
LINE
OUTPUT (A)
REC DRIVE
OUTPUT (A)
AGC TIME
CONSTANT
MIC INPUT (A)
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.
PB OUTPUT (A)
鈥?鈥?/div>
TAPE/TUNER
SELECTOR
REFERENCE
REC DRIVE
INPUT (A)
PB PRE
INPUT (A)
PB NF (A)
TUNER
INPUT (A)
PB/REC
SELECTOR
13
TUNER
INPUT (B)
PB NF (B)
GROUND
V
CC
E94806B8Y

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