參數(shù)資料
型號(hào)： BH7775K
廠商： Rohm CO.,LTD.
英文描述： VCR audio signal processing system
中文描述： 錄像機(jī)音頻信號(hào)處理系統(tǒng)
文件頁(yè)數(shù)： 9/17頁(yè)
文件大?。?/td> 226K
代理商： BH7775K
9
Video ICs
BH7775K
Electrical characteristics
Unless otherwise noted, the following measurement conditions apply:
UNREG – V
CC
= + 10V
UNREG – V
EE
= – 10V
Ta = 25°C
With regard to the control voltages, refer to the mode holding voltage range given in p.141.
Output switch control (W1 bit 4, W1 bit 3 and W1 bit 2)
BS Through control (W1 bit 1)
LINE AMP gain (W3 bit 4 and W3 bit 3)
FM output control (W2 bit 5)
FM OUT switch control (W2 bit 4, W2 bit 3 and W2 bit 2)
NTSC / PAL control (W2 bit 0)
Recording MUTE (W2 bit 1)
SP / EP control (W1 bit 5)
FM detector level control (W4 bit 7, W4 bit 6)
ENVE characteristic control (W4 bit 5, W4 bit 4)
MUTE CTRL (pin 22)
LINE MUTE (W1 bit 0)
STEREO
: OFF
: Standard ( + 10.6dB)
: FM output on
: FM REC output MIX ration ( – 10.0dB)
: NTSC
: Recording MUTE
: SP
: Standard
: FNORM detector, no ENVE output
: L (MUTE)
: L (MUTE)
MODEM carrier frequency
MODEM carrier frequency
Color signal subcarrier frequency NTSC 3.579545MHz, PAL 4.433619MHz
NTSC L channel 1.30MHz, PAL Lch 1.40MHz
NTSC R channel 1.70MHz, PAL Rch1.80MHz
Signal frequency f = 1kHz
Input condition 1 TU input V
IN
= – 20.0dBV, LINE1 / LINE2 input V
IN
= – 10.0dBV, BS input V
IN
= – 16.0dB
Input condition 2 TU input V
IN
= – 10.6dBV, LINE1 / LINE2 input V
IN
= – 0.6dBV, BS input V
IN
= – 6.6dB
Input condition 3 TU input V
IN
= – 15.0dBV, LINE1 / LINE2 input V
IN
= – 5.0dBV, BS input V
IN
= – 11.0dB
Input condition 4 TU input V
IN
= – 5.0dBV, LINE1 / LINE2 input V
IN
= + 5.0dBV, BS input V
IN
= – 1.0dB
1 B.W. = 0.4 to 30kHz
2 DIN AUDIO
Refer to Fig. 1 for the measurement circuit.
Regulator input voltage (–)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
I
qp EE
29.0
38.6
51.3
mA
I
qp PB
40.3
53.7
71.4
mA
I
qM EE
– 22.1
– 16.6
– 12.5
mA
I
qM PB
– 23.9
– 18.0
– 13.5
mA
[REGULATOR]
V
CC
4.69
5.39
V
5.04
V
EE
– 5.37
– 4.67
V
– 5.02
EE mode, no input, after carrier
frequency adjustment.
Regulator input voltage (+)
Quiescent Current
(positive supply) EE
Quiescent Current
(positive supply) PB
Quiescent Current
(negative supply) EE
Quiescent Current
(negative supply) PB
PB mode, no input, FNORM, BPF,
after carrier frequency adjustment.
EE mode, no input, after carrier
frequency adjustment.
PB mode, no input, FNORM, BPF,
after carrier frequency adjustment.
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