UPB1509GV データシートの表示（PDF） - NEC => Renesas Technology

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UPB1509GV

1GHz INPUT DIVIDE BY 2, 4, 8 PRESCALER IC FOR PORTABLE SYSTEMS

NEC => Renesas Technology 

PPB1509GV

Pin Explanations

Pin No.

1

2

3

4

5

6

7

8

Symbol

VCC1

IN

IN

GND

SW1

Applied

Voltage

Pin

Voltage

Functions and Explanation

2.2 to 5.5

•

Power supply pin of a input amplifier and dividers. This pin must be

equipped with bypass capacitor (eg 1000 pF) to minimize ground

impedance.

•

1.7 to 4.95 Signal input pin. This pin should be coupled to signal source with capacitor

(eg 1000 pF) for DC cut.

•

1.7 to 4.95 Signal input bypass pin. This pin must be equipped with bypass capacitor

(eg 1000 pF) to minimize ground impedance.

0

•

Ground pin. Ground pattern on the board should be formed as wide as

possible to minimize ground impedance.

H/L

•

Divide ratio control pin. Divide ratio can be determined by following applied

level to these pins.

SW2

H/L

•

H

SW1

L

SW2

H

L

1/2

1/4

1/4

1/8

OUT

VCC2

•

2.2 to 5.5

1.0 to 4.7

•

These pins must be each equipped with bypass capacitor to minimize their

impedance.

Divided frequency output pin. This pin is designed as emitter follower

output. This pin can output 0.1 VP-P min with 200 : load.

This pin should be coupled to load device with capacitor (eg 1000 pF) for

DC cut.

Power supply pin of output buffer amplifier. This pin must be equipped

with bypass capacitor (eg 1000 pF) to minimize ground impedance.

4

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