1.

Introduction

The SA58640 was designed for cordless telephone applications in which efficient and

economic integrated solutions are required and yet high performance is desirable.

Although the product is not targeted to meet the stringent specifications of high

performance cellular equipment, it will exceed the needs for analog cordless phones. The

minimal amount of external components and absence of any external adjustments makes

for a very economical solution.

2.

General description

The SA58640 is a low-voltage monolithic FM IF system incorporating a mixer/oscillator,

two limiting intermediate frequency amplifiers, quadrature detector, logarithmic RSSI,

voltage regulator and audio and RSSI opamps. The SA58640 is available in a 20-pin

SSOP.

3.

Features

higher frequencies)

4.

Applications

SA58640

Low-voltage mixer FM IF system

Rev. 01 — 1 November 2004

Objective data sheet