HA12203NT Datasheet, PDF (9/97 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

HA12203NT/HA12204NT
HA12203NT Parallel-Data Format
Pin No. Pin Name
12
PB A / B
13
A 120 / 70
17
RM ON / OFF
16
BIAS ON / OFF
18
NR ON / OFF *²
19
REC / PB / PASS
20
LM ON / OFF
14
NORM / HIGH
15
B NORM / CROM /
METAL
Note: 1. PB EQ logic
Lo
Mid
Hi
MODE
“Pin Open”
Ain *1
—
Bin *1
Lo
*1
—
*1
Lo
REC MUTE ON —
REC MUTE OFF Lo
BIAS OFF
—
BIAS ON
Lo
NR OFF
—
NR ON
Lo
REC MODE
PB MODE
REC MODE PASS Mid
LINE MUTE OFF —
LINE MUTE ON Lo
Normal speed —
High speed
Lo
REC EQ Normal *¹ REC EQ CROM *¹ REC EQ METAL *¹ Lo
Bias Normal
Bias CROM
Bias METAL *²
A 120 / 70
B NORM / CROM / METAL
Lo
Lo
Lo
Hi or Mid
Hi
Lo
Hi
Hi or Mid
Note: 2. HA12203NT only
PB
Lo
FLAT
FLAT
70µ
70µ
Hi
FLAT
70µ
FLAT
70µ
Functional Description
Power Supply Range
HA12203NT / 204NT are designed to operate on split supply.
Table 1 Supply Voltage
Product
HA12203NT
HA12204NT
V_CC
+6.0 to +7.5 V
V_EE
–7.5 to –6.0 V
Note
|V_CC + V_EE| <1.0 V
Note: The lower limit of supply voltage depends on the line output reference level.
The minimum value of the overload margin is specified as 12dB by Dolby Laboratories.
Rev.3, Jun. 1999, page 9 of 97