bh7802k ROHM Co. Ltd., bh7802k Datasheet - Page 3

• Manufacturer Part Number: bh7802k
• Description: Single Chip Hi-fi Audio Signal Processor
• Manufacturer: ROHM Co. Ltd.

•
Video ICs
Pin No.
Pin descriptions
I / O circuit; EF: emitter follower, P-P: push pull, B: base, and C: collector.
2, 1, 3
10, 24
11, 23
12, 22
30, 29
34, 33
41, 40
44, 43
9, 25
13
14
15
16
17
18
19
20
21
26
27
28
31
32
35
36
37
38
39
42
4
5
6
7
8
All numerical values are standardized values.
TUNER IN L, R, M
Hi-Fi ALC
SCL
SDA
GNDD
FSC IN
NR TC L, R
WTNG L, R
NR EMPH L, R
DC FB L, R
FM PB IN
ENVE OUT
/ ADJ FLAG
/ Hi-Fi DET
GNDM
BPF f
VCO f
VCCM
FM ALC
AHSWP IN
FM REC OUT
NORMAL IN
MIX ALC
MIX OUT
LINE L, R OUT
NORMAL OUT
MUTE CTRL
LINE2 L, R IN
VREFP
V
ERP
GND
V
LINE1 IN L, R
ERM
BS IN L, R
CC
EE
Pin name
0
0
ADJ
ADJ
Tuner input (L, R, M)
ALC time constant setting for Hi-Fi audio
CLOCK input for I
DATA input for I
GND for serial control
f
PNR attack and recovery time setting.
Attack R: 530 , Recovery R: 6.5k
Waiting characteristic, treble time constant
(External C = 0.022 F)
NR emphasis time constant setting
(External C = 0.0047 F)
PNR operating reference potential point
Playback FM input 660mV
Input coupling capacito (GND ~ V
FM Lch signal component envelope output
GND for PNR, MODEM and BPF
Center frequency adjustment for FM BPF
VCO control current setting
V
FM ALC time constant setting
Audio head switching pulse input
EE: recording FM output , sine wave output
PB: FM BPF output monitor
Normal input
ALC time constant setting for mixer amplifier.
Attack and recovery time setting
Mixer amplifier output for RF converter
Line output
Normal output
Line output mute control input
LINE2 input (L, R)
V
(power on detect and pre-charge functions)
V
V
I / O switch GND
V
LINE1 input (L, R)
V
BS input (L, R)
SC
/ Hi-Fi DET output / ADJ FLAG output for ADJ
CC
CC
CC
CC
EE
EE
input for VCO and BPF adjustment
for MODEM and BPF
/ 2 reference voltage
regulator
regulator error output
regulator
regulator error output
2
C bus control
2
C bus control
Function
P-P
Typ.
CC
)
Pin voltage
EE: 0.8V
PB: 1.0V
EE: 3.3V
– 5.0V
– 5.0V
– 5.0V
– 5.0V
0.0V
0.0V
0.0V
0.0V
0.0V
0.0V
0.0V
0.0V
1.9V
2.5V
5.0V
0.0V
0.0V
0.0V
0.0V
0.0V
0.0V
2.5V
5.0V
5.0V
0.0V
0.0V
0.0V
—
—
—
—
—
PB, ADJ: EF (NPN)
EF (NPN) ~ 2.5k
EF (NPN) ~ 200
EF (NPN) ~ 200
EF (NPN) ~ 200
EF (NPN) ~ 500
3k
I / O circuit
EE: 50k
EF (NPN)
EF (NPN)
EF (P-P)
C (NPN)
C (PNP)
B (PNP)
B (PNP)
B (PNP)
11.5k
150k
200k
100k
100k
330
88k
10k
88k
88k
—
—
—
—
—
—
—
—
—
> 2.5V)
BH7802K
3