BA7797 データシートの表示（PDF） - ROHM Semiconductor

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BA7797

VCR standard audio signal processor

ROHM Semiconductor 

Video ICs

BA7797F

•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = 10V, and f = 1kHz)

Parameter

Quiescent current EE

Symbol Min. Typ. Max. Unit

Conditions

IqEE

6.4 8.5 11.3 mA No signal

Measurement

circuit

Fig.1

Quiescent current PB

IqPB

6.4 8.5 11.3 mA No signal

Fig.1

Quiescent current REC

IqREC

5.2

6.9

9.2 mA No signal

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)

Distortion

Maximum output level

GVCLT

THDLT

VOMLT

19.0

—

5.9

20.0

0.1

8.4

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 – 9.0 – 8.0 – 7.0

THDA — 0.1 0.5

dBV VIN = – 25dBV, 9pin: OPEN

% 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 LINE IN, TUNER IN→REC OUT Fig.1

Distortion

Maximum output level

Openloop gain

THDR — 0.13 0.4 % VO = – 8dBV

VOMR

5.7 8.2

— 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)

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

—

17 25

Ω

Fig.1

REC head switch DC withstanding voltage BVRHDC —

0

10

µA E2 = ± 55V

Fig.1

REC head switch AC withstanding voltage BVRHAC 80

100

—

VP-P f = 70kHz, V2 Ϲ ± 1.5V

Fig.2

∗ Measured at BW = 400Hz to 30kHz.

4

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