SA2531CAFA Ver la hoja de datos (PDF) - South African Micro Electronic Systems

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SA2531CAFA

VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER

South African Micro Electronic Systems 

SA2531 A/B/C/E/G/U

PACKAGE

Available in 28 pin DIP and PLCC

PIN CONFIGURATIONS

28 Pin PLCC

28 Pin DIP

PIN DESCRIPTION

Pin# Symbol Function

23 M1

Microphone Inputs

24 M2

Differential inputs for the microphone (electret).

3 RO1 Receiver Outputs

2 RO2 These are the outputs for driving a dynamic earpiece with an impedance

of 150 to 300Ω

5

AGND Analogue Ground

This is the analog ground for the amplifiers.

28 RI

Receive Input

This is the input for the receive signal.

6 STB Side Tone Balance Input

This is the input for side tone cancellation.

1 LS

Line Current Sense Input

This is the input for sensing the line current.

27 LI

Line Input

This input is used for power extraction and line current sensing.

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