HA12134A Datasheet, PDF (5/27 Pages) Hitachi Semiconductor – Dolby B-Type Noise Reduction System

HA12134A, HA12135A, HA12136A
Electrical Characteristics (Ta = 25°C, V_CC = 12 V, Unless otherwise specified.) (cont)
Item
Offset voltage
V 8 (9) (NR-ON) –
V 8 (9) (NR-OFF)
Symbol Min Typ Max Unit Test conditions
∆Vorec –50 0.0
50
mV _{REC mode}
V = 16.0 V
CC
Test Circuit
R10
10k
SW9 ^P
R
C11
+
0.68µ
C1+2
To Vcc
SW8
REC
PB
R9
R8
18k
22k
SW1
OFF ON
AUDIO SG
HP339A or
EQUIVALENT
R11 _1µ 16
15
14
13
12
5.1k
REC GND PB IN BIAS REC/
IN
PB
11
PB
OUT
L
SW2
R
R1
5.1k
REC
IN
C1 1
+
R ^1µ
SW3
P
C2
+
R2 _0.68µ
10k
OFF
NR
PB
Vcc PB IN VREF ON/OFF OUT
2
3
C3
+ ^100µ
4
C4 ⁺
C13 ⁵
+
R3
6
1µ _22µ
22k
ON
OFF
ON
SW4
SW10
R7
C9+
10k
C10
0.22µ
10µ _P ^SW7
C8
+
R
10
DET
9 10µ _R6
REC
10k
OUT
SW6
REC
DET OUT
7
8
C7
+
R5
C5
0.22µ 10µ ^R
C6 P
+
SW5
10µ _R4
10k
AC VOLT
METER
HP 400E or
EQUIVALENT
DISTORTION
ANALYZER
HP339A or
EQUIVALENT
OSCILLOSCOPE
TEKTRO 475 or
EQUIVALENT
NOISE METER
WITH CCIR/
ARM FILTER
DC POWER
SOURCE
Notes: 1. Resistor tolerances are ±1%
2. Capacitor tolerances are ±1%
3. Unit R: Ω C: F
Rev.3, Jun. 1999, page 5 of 27