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부품번호 | NJU71074 기능 |
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기능 | OUTPUT COUPLING CAPACITOR-LESS LOW VOLTAGE VIDEO AMPLIFIER | ||
제조업체 | New Japan Radio | ||
로고 | |||
NJU71074
OUTPUT COUPLING CAPACITOR-LESS
LOW VOLTAGE VIDEO AMPLIFIER WITH LPF,Y/C MIX
GENERAL DESCRIPTION
The NJU71074 is a Low Voltage Video Amplifier with LPF,Y/C MIX
circuit. By the internal charge pump circuit, output capacitor is
unnecessary.
The NJU71074 features low power and small package, and is
suitable for low power design on downsizing of portable video
system and system with video output.
PACKAGE OUTLINE
NJU71074RB2
MSOP10(TVSP10)
FEATURES
Operating Voltage
2.5 to 3.45V
Output coupling capacitor-less
12dB amplifier
Internal 75 Driver Circuit (2-system drive)
Internal Y/C MIX Circuit
Internal LPF
0dB at 6.75MHz typ
Power Save Circuit
CMOS Technology
Package Outline
-40dB at 108MHz typ
MSOP10(TVSP10)*
*MEET JEDEC MO-187-DA / THIN TYPE
PIN CONFIGURATION
1: CP1
1 10 2: V+
3: YIN
4: Power save
5: CIN
6: VOUT
7: LPF SW
8: GND
9: V-
10: CP2
56
BLOCK DIAGRAM
V+
LPF SW
VIN
+ LPF
CIN
12dB
75Ω
DRV
V- Charge Pump
VOUT
POW ER
SAVE
CP1 CP2
GND
Ver.7
-1-
NJU71074
TEST CIRCUIT
75
V OUT
1µF 75
10 9 8
76
CP2 V- GND LPF SW VOUT
1µF 1µF
CP1 V+
12
Y IN
3
Power
Save C IN
45
0.1µF
0.1µF
+
10µF
0.1µF
Y IN C IN
Note) Refer to " APPLICATION CIRCUIT (next page) " at real use.
-4-
4페이지 NJU71074
Proposed measures is shift the output DC signal by using the V- terminal (pin 9) of NJU71074.
The steps are as follows:
1. A resistor: Rss add between the Ro (75Ω) and V- terminal (pin9).
2. Reduce Ro(75Ω).
By adding a Rss, level of the video signal is attenuated.
Example: Level of the video signal will be reduced 5% at connected Rss = 470Ω and Ro = 75Ω.
Therefore, increase 5% of video output level by changed to 68Ω the Ro.
*Table 1 shows an external resistor value and the swing of video output signal at V+ (pin2) = 3.3V, 3V.
3. Please evaluation of S/N. Because it is a possibility of noise change by internal IC charge pump by this
measure.
V+(pin2)
V-(pin9) (V+*90%)
Termination resistance
Resistance
(between Vss and Vout)
Output resistance(Ro)
Sync. Voltage of Vout
Swing of Vout
Value(typ.)
3.3 3
-2.97
-2.7
75 75
470 470
68
-0.209
0.975
68
-0.19
0.975
UNIT
V
V
ohm
ohm
ohm
V
Vpp
Table 1: external resistor value and the swing of video output signal at V+ (pin2) = 3.3V, 3V.
-7-
7페이지 | |||
구 성 | 총 16 페이지수 | ||
다운로드 | [ NJU71074.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
NJU71074 | OUTPUT COUPLING CAPACITOR-LESS LOW VOLTAGE VIDEO AMPLIFIER | New Japan Radio |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |