BH7775K データシートの表示（PDF） - ROHM Semiconductor
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BH7775K Datasheet PDF : 17 Pages
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Video ICs
•Pin descriptions
Pin function - 1 / 2
Pin No.
Pin name
Function
2, 1
4, 3, 5
6
BS IN L, R
TUNER IN L, R, M
GNDD
BS input (L and R).
TUNER input (L, R, and M).
Serial control GND.
7
DATA IN
Serial control data input.
8
CLOCK IN
Serial control clock input.
9
ENVE OUT / Hi-Fi DET FM input Lch signal component envelope output.
/ ADJ FLAG
Hi-Fi DET output for FM input. ADJ FLAG output for ADJ.
10
FSC IN
fsc input terminal for VCO and BPF adjustment.
11, 38
Hi-Fi IN L, R
Hi-Fi input for output switcher.
12, 37
Hi-Fi OUT L, R
PNR audio output.
13, 36
14, 35
15, 34
16, 33
17, 32
18, 31
19, 30
NR TC L, R
PNR attack and recovery time setting. Attack
R: 530Ω, recovery R: 6.5kΩ.
WTNG1 L, R
Waiting characteristic low-frequency time constant setting
WTNG2 L, R
Waiting characteristic high-frequency time constant setting
NR EMPH L, R
NR emphasis time constant setting.
(external C = 0.01µF)
DC FB L, R
PNR operating reference potential.
VCO f0 ADJ L, R
VCO control current setting terminal.
VCO DAC BF OUT L, R VCO control DAC voltage output terminal .
20, 29
GND (GNM) L, R
PNR, MODEM and BPF GND. L and R unconnected.
21
FM PB IN
Playback FM input. 660mVP-P Typ.
No input coupling capacitor (GND to VCC).
22
MUTE CTRL
Line output mute control input.
23
VCB
MODEM and BPF VCC.
24
BPF f0 ADJ
FM BPF center frequency adjustment.
25
FM ALC
FM ALC time constant setting.
26
RHS CTRL
High-voltage head switch (BA7755) control terminal.
27
AHSWP IN
Audio head switching pulse input.
28
FM REC OUT
EE: recording FM output. Sine wave output.
PB: BPF output monitor terminal.
Note) I / O circuit; EF: emitter follower, P-P: push pull, B: base, and C: collector.
All numerical values are standardized values.
Pin voltage
0.0V
0.0V
0.0V
—
—
EE: 0.8V
PB: 1.0V
0.0V
0.0V
0.0V
– 5.0V
0.0V
0.0V
0.0V
0.0V
2.5V
1.4V
0.0V
0.0V
—
5.0V
1.9V
0.0V
—
—
EE: 3.3V
PB: 3.3V
BH7775K
I / O circuit
69.8kΩ
47.0kΩ
—
B (PNP)
B (PNP)
EE: 50kΩ
PB, ADJ: EF (NPN)
200kΩ
47kΩ
EF: (P-P)
—
10kΩ
1.1kΩ
—
11.5kΩ
EF (NPN)
EF (NPN)
—
50kΩ
3kΩ (2.5V Min.)
—
EF (NPN) ~ 200Ω
EF (NPN) ~ 2.5kΩ
C (NPN)
B (PNP)
EF (NPN) ~ 200Ω
4
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