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