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BA7796FS

Rohm
Part Number BA7796FS
Manufacturer Rohm
Description VCR standard audio signal processor
Published Mar 26, 2005
Detailed Description Video ICs VCR standard audio signal processor BA7796FS The BA7796FS is a standard audio signal processor designed for u...
Datasheet PDF File BA7796FS PDF File

BA7796FS
BA7796FS

Overview
Video ICs VCR standard audio signal processor BA7796FS The BA7796FS is a standard audio signal processor designed for use in VCRs and tape decks.
The circuit is comprised of a playback preamplifier, a line amplifier, a recording amplifier, an ALC circuit, an EQ switch, and high-voltage head switch.
The IC has three input switching systems, and a built-in coil equivalent circuit for recording equalization, which eliminates the need for an external component.
Applications • Video cassette recorders and tape decks Features • 1) Three input switching systems built-in (LINE1, LINE2, and TUNER).
2) Built-in coil equivalent circuit for recording equalization.
3) 4) 5) 6) Two-mode EQ switch.
High-performance low-noise playback amplifier.
Fixed ALC level ( – 7.
2dB when VCC = 12V).
Phase-inverting recording amplifier.
•Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 13 800∗ – 10 ~ + 65 – 55 ~ + 125 Unit V mW °C °C ∗ When mounted on a 90mm × 50mm × 1.
6mm glass epoxy board.
Reduced by 8.
0mW for each increase in Ta of 1°C over 25°C.
•Recommended operating conditions (Ta = 25°C) Parameter Power supply voltage Symbol VCC Min.
7.
5 Typ.
— Max.
12.
5 Unit V 1 Video ICs BA7796FS •Block diagram PB IN 1 REC 24 HEAD GND LP + EP HEAD EQ SW 2 23 PB PB NFB REC HEAD SW 3 REC SP 22 PB EQ SW REC OUT 4 PB 21 PB OUT REC AMP REC L2 5 EQ 0dB REC L1 6 20 PB LINE IN ALC + 28dB 19 ALC FILTER EQ CTRL 7 LINE ATT – 8dB 18 TUNER IN VCC 8 17 INPUT SW CTRL RIPPLE FILTER 9 ATT – 8dB 16 LINE IN1 REC / EE CTRL 10 MUTE 15 PB / EE CTRL BUFF LINE OUT 11 ATT – 8dB 14 LINE IN2 GND 12 13 MUTE CTRL Units: R [Ω] C [F] 2 Video ICs BA7796FS •Pin descriptions Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Pin name PB IN HEAD EQ SW REC HEAD SW REC OUT REC L 2 REC L 1 EQ CTRL VCC RIPPLE FILTER REC / EE CTRL LINE OUT GND ...


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