HA12134A, HA12135A, HA12136A
Pin Description (Ta = 25°C, VCC = 12 V, No signal, The value in the table show typical
value.)
Pin No. Symbol
1, 16 REC IN
R (in) VDC
56 kΩ 6.0 V
Equivalent circuit
Description
VCC Recording (encode) input
56k
2
3, 14
VCC
PB IN
—
12.0 V
100 kΩ 6.0 V
VCC /2
GND
Power supply
VCC Playback (decode) input
100k
4
VREF
—
6.0 V
5
NR ON/OFF —
—
1k
6, 11 PB OUT
—
6.0 V
100
100
VCC /2
GND
Reference voltage
VCC
Mode control pin for NR
ON/OFF
“H”→NR ON
“L”→NR OFF
3 VBE
4 VBE
100k
GND
VCC
Playback (decode) output
GND
6