SAA1057 データシートの表示（PDF） - Philips Electronics

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SAA1057

Radio tuning PLL frequency synthesizer

Philips Electronics 

Philips Semiconductors

Radio tuning PLL frequency synthesizer

Product specification

SAA1057

GENERAL DESCRIPTION

The SAA1057 is a single chip frequency synthesizer IC in

I2L technology, which performs all the tuning functions of a

PLL radio tuning system. The IC is applicable to all types

of radio receivers, e.g. car radios, hi-fi radios and portable

radios.

Features

• On-chip prescaler with up to 120 MHz input frequency.

• On-chip AM and FM input amplifiers with high sensitivity

(30 mV and 10 mV respectively).

• Low current drain (typically 16 mA for AM and 20 mA for

FM) over a wide supply voltage range (3,6 V to 12 V).

• On-chip amplifier for loop filter for both AM and FM (up

to 30 V tuning voltage).

• On-chip programmable current amplifier (charge pump)

to adjust the loop gain.

• Only one reference frequency for both AM and FM.

• High signal purity due to a sample and hold phase

detector for the in-lock condition.

• High tuning speed due to a powerful digital memory

phase detector during the out-lock condition.

• Tuning steps for AM are: 1 kHz or 1,25 kHz for a VCO

frequency range of 512 kHz to 32 MHz.

• Tuning steps for FM are: 10 kHz or 12,5 kHz for a VCO

frequency range of 70 MHz to 120 MHz.

• Serial 3-line bus interface to a microcomputer.

• Test/features.

QUICK REFERENCE DATA

Supply voltage ranges

Supply currents

Input frequency ranges

at pin FAM

at pin FFM

Maximum crystal input frequency

Operating ambient temperature range

VCC1

VCC2

VCC3

ICC1 + ICC2

ICC3

fFAM

fFFM

fXTAL

Tamb

3,6 to 12

V

3,6 to 12

V

VCC2 to 31

V

typ. 18

mA

typ. 0,8

mA

512 kHz to 32

70 to 120

>

4

−25 to + 80

MHz

MHz

MHz

°C

PACKAGE OUTLINE

18-lead DIL; plastic (SOT102H); SOT102-1; 1996 September 2.

November 1983

2

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