CXA1911 SONY [Sony Corporation], CXA1911 Datasheet - Page 5

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CXA1911

Manufacturer Part Number
CXA1911
Description
Dolby B/C Type Noise Reduction System with Playback Equalizer
Manufacturer
SONY [Sony Corporation]
Datasheet
No.
Pin
11
12
13 G2(NOR)
14
15 MSMODE
18
19 TAPESW
21
16
MSOUT
G1(FF)
Symbol
DRSW
NRSW
MSSW
MSTC
0.2 V
for signal
detection;
5.0 V for
no signal
detection
Approx.
1.4 V for
signal
detection;
5.0 V for
no signal
detection
value
4.0V
DC
Z (in)
V
DD
=5V
16
13
14
15
18
19
21
V
DD
12
11
=5V
147
Equivalent circuit
147
147
147
147
—5—
10µ
1k
20k
50µ
50µ
100k
100µ
50µ
50µ
GND
GND
V
GND
V
V
CC
50µ
CC
CC
GND
Vcc
MS output
Connection of MS detection time
constant
MS feedback
MSMODE MS gain selector
G1 when high, G2 when low
DRSW
Reverse when high, Forwards
when low
TAPESW Equalizer selector
120µs when high, 70µs when
low
NRSW
MS on/off selector
MS on when high, MS off when
low
Description
Head selector
NR ON/OFF selector
CXA1911Q

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