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BA7664FV bảng dữ liệu(PDF) 5 Page - Rohm

tên linh kiện BA7664FV
Giải thích chi tiết về linh kiện  75??driver with Y / C MIX circuit
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BA7664FV bảng dữ liệu(HTML) 5 Page - Rohm

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5
Multimedia ICs
BA7664FV
•Measurement circuit
6dB
75
Ω
+
20k
1
2
3
4
8
7
6
5
MUTE
CHROMA MUTE
V
+
100
µ
22
µ
0.1
µ
V02
V01
47
µ
SW16
1
2
150
75
75
2.1V
0.8V
1
2
3
SW5
2.1V
0.8V
1
2
1
2
3
2.5V
3
SW1
SW2
1
µF
1
µF
1
2
3
0.1
µF
0.1
µF
SW4
A
Fig.1
•Measurement conditions
Parameter
Symbol
Measurement
method
SW Conditions
Circuit current
Max. output level
Voltage gain
Y
→OUT
C
→OUT
Frequency characteristic
Muting attenuation
Chroma muting attenuation
Input impedance
Circuit current when muted
ICC
VOM
GV1
GV2
GF
MT
MTC
ZIN
IMUTE
∗1
∗2
∗3
∗3
∗4
∗5
∗5
∗6
∗7
1
2
3
3
3
3
1
3
3
1
2
1
2
2
3
1
2
3
1
1
4
1
1
1
2
2
1
2
3
1
5
2
3
3
3
3
3
1
3
2
8
1
2
2
2
2
2
2
2
1
∗ The muting switching level is substituted by carrying out the above measurement at H = 2.1V, L = 0.8V.
Measurement method
∗1 Measure the circuit current when no signal is present.
∗2 Apply a sine wave of f = 1kHz to the input, and adjust the input level so that the output distortion is 1%.
At this time, set the output voltage to the maximum output level of VOM [VP-P].
∗3 Measure the output VO [VP-P] with a sine wave of f = 4.43MHz, 1VP-P applied to the input.
Voltage gain GV is: GV = 20 Log (VO / VIN) [dB]
∗4 Measure the outputs VO7 and VO1 [VP-P] each with sine waves of f = 7MHz, 1VP-P and f = 1MHz, 1VP-P applied to the input.
Voltage frequency GF is: GF = 20 Log (VO7 / VO1) [dB]
∗5 Measure the output VO [VP-P] with a sine wave of f = 4.43MHz, 1VP-P applied to the input.
The muting attenuation MT is: MT = 20 Log (VO / VIN) [dB]
∗6 Measure the input voltage VINSO [V] and the open voltage of the input VINO [V] when 50µA is introduced.
The input impedance ZIN is: ZIN = |VINSO – VINO| / 50
× 1000 [kΩ]
∗7 Measure the circuit current when MUTEA (pin 1) is HIGH.



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