Philips Semiconductors

Product specification

SA7025

1GHz low-voltage Fractional-N synthesizer

1996 Aug 6

3

PIN DESCRIPTIONS

Symbol

Pin

Description

CLOCK

1

Serial clock input

DATA

2

Serial data input

STROBE

3

Serial strobe input

4

Digital ground

5

Prescaler positive input

6

Prescaler negative input

7

Prescaler positive supply voltage. This pin supplies power to the prescaler and RF input buffer

8

Reference divider input

RA

9

10

Auxiliary divider input

PHA

11

Auxiliary phase detector output

12

Analog ground

PHI

13

Integral phase detector output

PHP

14

Proportional phase detector output

15

Analog supply voltage. This pin supplies power to the charge pumps, Auxiliary prescaler, Auxiliary and Reference

buffers.

RN

16

RF

17

LOCK

18

Lock detector output

TEST

19

20

Digital supply voltage. This pin supplies power to the CMOS digital part of the device