BH7800K View Datasheet(PDF) - ROHM Semiconductor
Part Name
Description
Manufacturer
BH7800K Datasheet PDF : 13 Pages
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Video ICs
•Pin descriptions
Pin No.
Pin name
Function
2, 1, 3 TUNER IN L, R, M Tuner input (L, R, M)
4
5
6
7
8
9, 25
10, 24
11, 23
12, 22
13
14
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
ALC time constant setting for Hi-Fi audio
CLOCK input for SSB control
DATA input for SSB bus control
GND for serial control
fSC input for VCO and BPF adjustment
PNR attack and recovery time setting
Attack R: 530Ω, Recovery R: 6.5kΩ
Waiting characteristic, treble time constant (external C = 0.0047µF)
NR emphasis time constant setting
(External C = 0.0047µF)
PNR operating reference potential point
Playback FM input 1320mVP-P Typ.
Input coupling capacitor (GND ~ VCC)
FM Lch signal component envelope output
/ Hi-Fi DET output / ADJ FLAG output for ADJ
15
GNDM
GND for PNR, MODEM and BPF
16
17
18
19
20
21
26
27
28
30, 29
BPF f0 ADJ
VCO f0 ADJ
VCCM
FM ALC
AHSWP IN
FM REC OUT
NORMAL IN
MIX ALC
MIX OUT
LINE L, R OUT
Center frequency adjustment for FM BPF
VCO control current setting
VCC for MODEM and BPF
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
31
NORMAL OUT
Normal output
32
34, 33
35
36
37
38
MUTE CTRL
LINE2 L, R IN
VREFP
VCC
ERP
GND
Line output mute control input
Line2 input (L, R)
VCC / 2 reference voltage (power on detect and pre-charge functions)
VCC regulator
VCC regulator error output
I / O switch GND
39
VEE
VEE regulator
41, 40 LINE1 IN L, R
LINE1 input (L, R)
42
ERM
VEE regulator error output
44, 43 BS IN L, R
BS input (L, R)
Note: EF: emitter follower, P-P: push pull, B: base, and C: collector.
All numerical values are standardized values.
BH7800K
Voltage
0.0V
0.0V
—
—
—
0.0V
– 5.0V
0.0V
0.0V
0.0V
0.0V
EE: 0.8V
PB: 1.0V
0.0V
1.9V
2.5V
5.0V
0.0V
—
3.3V
0.0V
– 5.0V
0.0V
0.0V
0.0V
—
0.0V
2.5V
5.0V
5.0V
0.0V
– 5.0V
0.0V
– 5.0V
0.0V
Format
150kΩ
EF (NPN) ~ 200Ω
B (PNP)
B (PNP)
—
200kΩ
—
—
—
23kΩ
100kΩ
EE: 50kΩ
PB, ADJ: EF (NPN)
—
EF (NPN) ~ 200Ω
EF (NPN)
—
EF (NPN) ~ 2.5kΩ
B (PNP)
EF (NPN) ~ 200Ω
100kΩ
EF (NPN) ~ 500Ω
EF (NPN)
330Ω
EF (P-P)
3kΩ ( > 2.5V)
150kΩ
10kΩ
—
C (NPN)
—
—
150kΩ
C (PNP)
150kΩ
3
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