UPB1004GS datasheet(8/9 Pages) NEC

8 / 9 page

Data Sheet P13860EJ3V0DS00

µµµµPB1005GS

No.

Pin Name

Applied

Voltage

(V)

Voltage

(V)

Function and Application

Internal Equivalent Circuit

VCC

(divider block)

2.7 to 3.3



Supply voltage pin of

prescalers.

LOout



2.08

Monitor pin of comparison

frequency at phase detector.

GND

(divider block)



Ground pin of prescalers +

LOout amplifier

1st

OSC

÷25

÷8

MIX

÷2

Ref.

REFin



1.96

Input pin of reference frequency.

This pin should be equipped

with external 16.368 MHz

oscillator (e.g. TCXO).

VCC

(reference

block)

2.7 to 3.3



Supply voltage pin of

input/output amplifiers in

reference block.

REFout



1.65

Output pin of reference

frequency. The frequency from

pin 19 can be took out as 1 VP-P

swing.

2ndIFout



1.56

Output pin of 2nd IF amplifier.

This pin output 4.092 MHz

clipped sinewave.

This pin should be equipped

with external inverter to adjust

level to next stage on user’s

system.

VCC

(2ndIF-AMP)

2.7 to 3.3



Supply voltage pin of 2nd IF

amplifier.

2ndIF bypass



2.30

Bypass pin of 2nd IF amplifier

input 1. This pin should be

grounded through capacitor.

2ndIFin2



2.35

Pin of 2nd IF amplifier input 2.

This pin should be grounded

through capacitor.

2ndIFin1



2.35

Pin of 2nd IF amplifier input 1.

2nd IF filter can be inserted

between pin 26 & 28.

GND

(2ndIF-AMP)



Ground pin of 2nd IF amplifier.

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