Philips Semiconductors

Objective specification

SA9024

900 MHz transmit modulator and 1.3 GHz

fractional–N synthesizer

1997 Aug 01

8

Synthesizer

Main Divider

Input frequency range

800

1300

MHz

Input harmonics

No multi–clocking

–10

dBc

Synthesizer LO input (AC-coupled;

external shunt 50

Ω single-ended,

100

Ω differential)

Input power

–20

0

dBm

Reference Divider

Input frequency RANGE

10

40

MHz

Input harmonics

No multi–clocking

–10

dBc

Auxiliary Divider

Input frequency RANGE

10

500

MHz

Input harmonics

No multi–clocking

–10

dBc

Input signal amplitude

0.200

Serial Interface

Clock frequency

10

MHz

Set-up time: DATA to CLOCK, CLOCK to

STROBE

30

ns

Hold time: CLOCK to DATA

30

ns

CLOCK

30

Pulse width

STROBE (B - D words)

30

ns

Pulse width

A word

f

1

) t

W

ns

1. Transmit mode @ 33% duty cycle.

2. The relative output current variation is defined thus:

3. Power supply current measured with

Main phase detector reference frequency = 240 kHz, auxiliary phase detector frequency = 240 kHz.

4. Maximum and minimum levels guaranteed by design and random testing for temperature range of –40 to +85

°C.