UPC3207GR datasheet(3/20 Pages) NEC

3 / 20 page

µPC3207GR

Data Sheet P13717EJ3V0DS00

PIN EXPLANATION

Pin No.

Symbol

Function and Explanation

Equivalent Circuit

UOSC collector

Collector pin of UHF oscillator with balance

(Tr. 1)

amplifier. Assemble LC resonator with 2

pin through capacitor ~ 1 pF to oscillate

with active feedback loop.

UOSC base

Base pin of UHF oscillator with balance

(Tr.2)

amplifier. Connected to LC resonator

UOSC base

through feedback capacitor ~ 360 pF.

(Tr. 1)

UOSC collector

Collector pin of UHF oscillator with balance

(Tr. 2)

amplifier. Assemble LC resonator with 2

pin through capacitor ~ 1 pF to oscillate

with active feedback loop.

Double balanced oscillator with transistor 1

and transistor 2.

Switching pin for VHF or UHF operation.

VHF operation = open

UHF operation = 9.0 V

OSC output

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

Ω resistor.

GND

GND pin of VHF and UHF oscillator.

VOSC base

Base pin of VHF oscillator.

(Tr. 1)

Grounded through capacitor ~ 10 pF.

VOSC base

Base pin of VHF oscillator.

(Tr. 2)

Assemble LC resonator with 10 pin to

oscillate with active feedback loop.

VOSC collector

Collector pin of VHF oscillator.

(Tr. 1)

Connected to LC resonator through

feedback capacitor ~ 3 pF.

* External element

1.5 k

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