BA7796FS View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

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BA7796FS

VCR standard audio signal processor

ROHM Semiconductor 

Video ICs

BA7796FS

•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = 12V, and f = 1kHz)

Parameter

Quiescent current EE

Symbol Min. Typ. Max. Unit

Conditions

IqEE 7.4 9.8 13.0 mA No signal input

Measurement

circuit

Fig.1

Quiescent current PB

IqPB 7.4 9.8 13.0 mA No signal input

Fig.1

Quiescent current REC

IqREC 6.4 8.4 11.2 mA No signal input

Fig.1

〈Line amplifier〉

Voltage gain (PB input)

GVCLP 27.0 28.0 29.0 dB VO = – 8dBV

Fig.1

Voltage gain (LINE1, LINE2, TU inputs) GVCLT 19.0

Distortion

THDLT —

Maximum output level

VOmLT 7.3

20.0

0.1

10.5

21.0

0.3

—

dB VO = – 8dBV

% VO = – 8dBV, RL = 4.7kΩ∗

dBV THD = 1%, RL = 4.7kΩ∗

Fig.1

Fig.1

Fig.1

Output residual noise

VNOLT — – 81.5 – 75 dBV Rg = 4.7kΩ, DIN AUDIO

Fig.1

ALC level

ALC distortion

VOA – 8.2 – 7.2 – 6.2

THDA — 0.1 0.5

dBV VIN = – 25dBV

% VIN = – 25dBV, RL = 4.7kΩ∗

Fig.1

Fig.1

Mute attenuation ratio

MT — – 82.0 – 72 dB VO = 0dBV, DIN AUDIO

Fig.1

〈Recording amplifier〉

Voltage gain

GVCR 19.0 20.0 21.0 dB LINE1, LINE2, TUNER→REC OUT Fig.1

Distortion

Maximum output level

Openloop gain

THDR — 0.13 0.4 % VO = – 8dBV

VOmR 7.0 10.0 — dBV VO = – 8dBV, RL = 4.7kΩ∗

GVOR 60

71

— dB THD = 1% , RL = 4.7kΩ∗

Fig.1

Fig.1

Fig.1

〈Playback preamplifier〉

Openloop gain

GVOP 61

68

— dB

—

Fig.1

Input conversion noise

VNINP — – 122.5 – 114 dBV Rg = 680Ω, DIN AUDIO

Fig.1

Voltage gain (stand alone, SP mode) GVCP 35.0 36.0 37.0 dB PB IN→PB OUT

Fig.1

〈Head switch〉

PB head switch impedance

RPH

—

11

20

Ω

—

Fig.1

REC head switch impedance

RRH

—

11

20

Ω

—

Fig.1

REC head switch DC withstanding voltage BVRHDC —

0

10 µA E3 = ± 55V

Fig.1

REC head switch AC withstanding voltage BVRHAC 80 100 — VP-P f = 70kHz, V3 Ϲ ± 1.5V

∗ Measured at BW = 0.4 to 30kHz.

Fig.2

5

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