HA12155NT/HA12157NT
Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typical
value) (cont)
Pin No.
DP-64S
18
47
Terminal
name
Zin
HLS DET —
DC
voltage
2.3 V
Equivalent circuit
Description
Time constant pin for
rectifier
19
LLS DET
46
57
BIAS
—
0.28 V
25
IREF
—
1.2 V
GND
Dolby NR Reference
current input
EQ Reference current
input
27
FM
28
fQ
29
f/Q
30
GH
31
GL
32
GP
EQ Parameter current
input
Rev.4, Jun. 1997, page 11 of 57