DESCRIPTION

The SA1140 is an IF system IC designed for FM car stereo receivers. It features versatile muting characteristics which can be varied with external parts.

FEATURES

* Muting characteristics

a) Muting operation is performed under weak signal strength.

b) Maximum muting attenuation can be selected to be approximately 6 to 40 dB.

c) Input signal strength level which actuates the muting circuit can be set freely.

* High limiting sensitivity

* High S/N (78 dB typ.)

* Good AMR

* Signal meter drive output proportional to the input signal strength in dB (suitable to control multiplex IC SA3370).

APPLICATIONS

* FM car stereo receivers, FM home radio