BA7795 データシートの表示（PDF） - ROHM Semiconductor

部品番号

コンポーネント説明

メーカー

BA7795

VCR standard audio signal processor

ROHM Semiconductor 

Video ICs

BA7795LS / BA7795FS

•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = 9V, and f = 1kHz)

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Quiescent current EE

Quiescent current PB

IqEE

6.3

8.3 10.8 mA When no signal

IqPB

6.3

8.3 10.8 mA When no signal

Quiescent current REC

IqREC

4.9

6.4

8.4 mA When no signal

〈Line amplifier〉

Power supply gain (PB input)

GVCP 27.0 28.0 29.0 dB VO = – 8dBV

Power supply gain (LINE1, LINE2, TU inputs) GVCL 19.0 20.0 21.0 dB VO = – 8dBV

Distortion

THDL

—

0.1

0.3

% VO = – 8dBV, RL = 4.7kΩ∗1

Maximum output level

VOmL

5.0

7.2

— dBV THD = 1%, RL = 4.7kΩ∗1

Output residual noise

VNOL

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

ALC level

ALC distortion

VOA – 7.0

THDA

—

– 6.0 – 5.0

0.18 0.5

dBV

%

VIN = – 23dBV

R1 / R2 = 8.2 / 39kΩ

VIN = – 23dBV, RL = 4.7kΩ∗1

Mute attenuation ratio

MT

— – 82.5 – 72 dB Vo = 0dBV, DIN AUDIO

〈Recording amplifier〉

Voltage gain

Distortion

Maximum output level

Open loop gain

〈Playback preamplifier〉

GVCR

THDR

VOmR

GVOR

19.0

—

5.5

65

20.0

0.03

7.4

77

21.0 dB LINE, TUNER input→REC OUT

0.3

% VO = – 8dBV

— dBV VO = – 8dBV, RL = 4.7kΩ∗1

—

dB THD = 1%, RL = 4.7kΩ∗1

Open loop gain

Input conversion noise

Total gain

〈Head switch〉

GVOP

VNINP

GVCP-L

62

68

—

— – 122.5 – 114

56 57.5 59

dB

dBV Rg = 680Ω, DIN AUDIO

dB PB IN →BF OUT

PB head switch impedance

RPH

—

11

20

Ω

REC head switch impedance

RRH

—

11

20

Ω

REC head switch AC withstanding voltage BVRHAC 80

100

— VP-P f = 70kHz

∗1 Measured at BW = 400Hz to 30kHz.

3

Share Link: