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參數(shù)資料
| 型號： | UPC2797 |
| 廠商： | NEC Corp. |
| 英文描述： | FREQUENCY DOWN CONVERTER FOR VHF TO UHF BAND TV/VCR TUNER |
| 中文描述： | 頻率向下轉換器甚高頻超高頻波段電視/錄像機調諧器 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大小： | 143K |
| 代理商： | UPC2797 |
μ
PC2797GR
3
Data Sheet P11889EJ3V0DS00
PIN EXPLANATION
Pin Voltage TYP.
above: VHF mode
below: UHF mode
Pin No.
Symbol
Function and Explanation
Equivalent Circuit
1
UOSC
collector
(Tr. 1)
6.90
Collector pin of UHF oscillator.
Assemble LC resonator with 2
pin through capacitor ~ 1 pF to
oscillate with active feedback loop.
6.25
2
UOSC
base (Tr.2)
6.00
Base pin of UHF oscillator
with balance amplifier. Connected
to LC resonator through feedback
capacitor ~ 300 pF.
3.90
3
UOSC
base (Tr. 1)
6.00
Base pin of UHF oscillator
with balance amplifier.
Connected to LC resonator
through feedback capacitor ~ 300 pF.
3.90
4
UOSC
collector
(Tr. 2)
6.90
Collector pin of UHF oscillator
with balance amplifier. Assemble
LC resonator with 3 pin through
capacitor ~ 1 pF to oscillate with
active feedback loop.
Double balanced oscillator with
transistor 1 and transistor 2.
6.25
5
UB
—
Switching pin for VHF or UHF
operation.
VHF operation = open
UHF operation = 9.0 V
9.0
6
OSC
output
5.85
UHF and VHF oscillator output
pin. In case of F/S tuner
application, connected PLL
symthesizer IC’s input pin.
Grounded through 1.5 k
resistor.
5.85
7
GND
0.0
GND pin of VHF and UHF
oscillator.
0.0
8
VOSC
base
(Tr. 1)
3.50
Base pin of VHF oscillator.
Grounded through capacitor ~
10 pF.
5.90
9
VOSC
base
(Tr. 2)
3.50
Base pin of VHF oscillator.
Assemble LC resonator with
10 pin to oscillate with active
feedback loop.
5.90
10
VOSC
collector
(Tr. 1)
6.20
Collector pin of VHF oscillator.
Connected to LC resonator
through feedback capacitor ~ 3 pF.
6.90
6
from
OSC
* External element
REG
1.5 k
9
8
REG
10
4
2
1
3
5
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UPC2797GR | 制造商:NEC 制造商全稱:NEC 功能描述:FREQUENCY DOWN CONVERTER FOR VHF TO UHF BAND TV/VCR TUNER |
| UPC2797GR-E1 | 制造商:NEC 制造商全稱:NEC 功能描述:FREQUENCY DOWN CONVERTER FOR VHF TO UHF BAND TV/VCR TUNER |
| UPC2798 | 制造商:NEC 制造商全稱:NEC 功能描述:IF DOWN CONVERTOR IC FOR DIGITAL CATV |
| UPC2798GR | 功能描述:上下轉換器 250MHz IF Downconvrt RoHS:否 制造商:Texas Instruments 產品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| UPC2798GR(A) | 制造商:Renesas Electronics Corporation 功能描述: |
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