bh7272kv ROHM Co. Ltd., bh7272kv Datasheet - Page 7

• Manufacturer Part Number: bh7272kv
• Description: Two-channel Amplifier Digital Vcrs
• Manufacturer: ROHM Co. Ltd.

•
Video ICs
I / O circuits
The pin voltages in brackets are for REC mode, all others are for PB mode.
Pin No.
1
2
3
4
5
6
7
8
PB SW + OUT
PB SW – OUT
REC FB + B
REC FB – B
HEAD + B
HEAD – B
Pin name
GND
GND
Pin voltage
(2.5)
(2.5)
(2.5)
(2.5)
2.5
2.5
2.5
2.5
0.2
0.2
(–)
(–)
—
—
Equivalent internal circuit
1
4
1k
1k
5k
5k
10k
10k
—
—
1k
1k
20
20
20
20
6
7
2
3
REC DC feedback
HEAD B
HEAD B
REC DC feedback
GND for PB 1st stage amplifier and
REC current amplifier
1st stage amplifier positive phase
output
PB feedback
1st stage amplifier reverse phase
output
PB feedback
GND for REC current amplifier
Function
BH7272KV
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