參數(shù)資料
型號(hào)： BH7802K
廠商： Rohm CO.,LTD.
英文描述： Single chip Hi-Fi audio signal processor
中文描述： 單芯片Hi - Fi音頻信號(hào)處理器
文件頁數(shù)： 3/14頁
文件大?。?/td> 183K
代理商： BH7802K
3
Video ICs
BH7802K
Pin descriptions
Pin No.
Pin name
I / O circuit
Pin voltage
Function
2, 1, 3
TUNER IN L, R, M
150k
0.0V
Tuner input (L, R, M)
4
Hi-Fi ALC
EF (NPN) ~ 200
0.0V
ALC time constant setting for Hi-Fi audio
5
SCL
B (PNP)
—
CLOCK input for I
2
C bus control
6
SDA
B (PNP)
—
—
—
DATA input for I
2
C bus control
7
GNDD
GND for serial control
8
FSC IN
200k
0.0V
9, 25
NR TC L, R
—
—
—
– 5.0V
f
SC
input for VCO and BPF adjustment
12, 22
DC FB L, R
11.5k
0.0V
PNR operating reference potential point
15
GNDM
—
0.0V
GND for PNR, MODEM and BPF
16
BPF f
0
ADJ
EF (NPN) ~ 200
1.9V
Center frequency adjustment for FM BPF
17
VCO f
0
ADJ
EF (NPN)
2.5V
VCO control current setting
18
VCCM
—
5.0V
V
CC
for MODEM and BPF
19
FM ALC
EF (NPN) ~ 2.5k
0.0V
FM ALC time constant setting
20
AHSWP IN
B (PNP)
—
Audio head switching pulse input
26
NORMAL IN
100k
0.0V
Normal input
28
MIX OUT
EF (NPN)
0.0V
Mixer amplifier output for RF converter
30, 29
LINE L, R OUT
330
0.0V
Line output
31
NORMAL OUT
EF (P-P)
0.0V
Normal output
32
MUTE CTRL
3k
(
> 2.5V)
—
Line output mute control input
34, 33
LINE2 L, R IN
88k
0.0V
LINE2 input (L, R)
36
V
CC
—
5.0V
V
CC
regulator
37
ERP
C (NPN)
5.0V
V
CC
regulator error output
38
GND
—
0.0V
I / O switch GND
39
V
EE
—
– 5.0V
V
EE
regulator
41, 40
LINE1 IN L, R
88k
0.0V
LINE1 input (L, R)
42
ERM
C (PNP)
– 5.0V
V
EE
regulator error output
44, 43
I / O circuit; EF: emitter follower, P-P: push pull, B: base, and C: collector.
All numerical values are standardized values.
BS IN L, R
88k
0.0V
BS input (L, R)
PNR attack and recovery time setting.
Attack R: 530
, Recovery R: 6.5k
Waiting characteristic, treble time constant
(External C = 0.022
μ
F)
NR emphasis time constant setting
(External C = 0.0047
μ
F)
10, 24
WTNG L, R
0.0V
11, 23
NR EMPH L, R
0.0V
13
FM PB IN
100k
0.0V
Playback FM input 660mV
P-P
Typ.
Input coupling capacito (GND ~ V
CC
)
21
FM REC OUT
EF (NPN) ~ 200
EE: 3.3V
EE: recording FM output , sine wave output
PB: FM BPF output monitor
27
MIX ALC
EF (NPN) ~ 500
– 5.0V
ALC time constant setting for mixer amplifier.
Attack and recovery time setting
35
VREFP
10k
2.5V
V
CC
/ 2 reference voltage
(power on detect and pre-charge functions)
14
/ ADJ FLAG
/ Hi-Fi DET
ENVE OUT
EE: 50k
EE: 0.8V
PB: 1.0V
PB, ADJ: EF (NPN)
FM Lch signal component envelope output
/ Hi-Fi DET output / ADJ FLAG output for ADJ
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