參數(shù)資料
型號: μPC2775GR
廠商: NEC Corp.
英文描述: Frequecy Down Converter For VHF-UHF Band TV/VCR Tuner(應(yīng)用于VHF-UHF調(diào)諧器的下變頻轉(zhuǎn)換器)
中文描述: Frequecy下變頻器甚高頻,超高頻波段電視/錄像機(jī)調(diào)諧器(應(yīng)用于甚高頻,超高頻調(diào)諧器的下變頻轉(zhuǎn)換器)
文件頁數(shù): 4/16頁
文件大小: 128K
代理商: ΜPC2775GR
μ
PC2775GR/GS
4
Data Sheet P10194EJ3V0DS00
Symbol
IF
output
V
CC
MIX
output 1
MIX
output 2
VRF
input
(bypass)
VRF input
GND
URF input
(bypass)
URF input
Equivalent circuit
Pin No.
11
12
13
14
15
16
17
18
19
20
Pin voltage TYP.
above: V mode (V)
below: U mode (U)
5.80
5.65
9.0
6.95
6.95
2.75
2.80
2.80
0
2.65
2.65
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
Function and Explanation
IF output pins of VHF-UHF band
functions.
Higher output power can be obtained
by connecting registor (ex. 470
) to
the ground.
Power supply for VHF-UHF band
functions.
VHF and UHF MIX output pin.
These pins should be equipped with
tank circuit to adjust frequency.
VRF signal input pin from antenna.
Bypass pin for VHF MIX input.
Grounded through capacitor.
GND pin of MIX, IF amplifier and
regulator.
Bypass pin for UHF MIX input.
Grounded through capacitor.
URF signal input pin from antenna.
- - - - - - - - - - - - -
- - - - - - - - - - - - -
11
12
13
15
From
VHF
OSC
14
13
16
17
15
From
UHF
OSC
14
13
20
19
相關(guān)PDF資料
PDF描述
μPC2775GS Frequecy Down Converter For VHF-UHF Band TV/VCR Tuner(應(yīng)用于VHF-UHF調(diào)諧器的下變頻轉(zhuǎn)換器)
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