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
24
3
M1
M2
Microphone Inputs
Differential inputs for the microphone (electret).
Receiver Outputs
These are the outputs for driving a dynamic earpiece with an impedance
of 150 to 300Ω
RO1
RO2
2
5
AGND
RI
Analogue Ground
This is the analog ground for the amplifiers.
Receive Input
This is the input for the receive signal.
Side Tone Balance Input
This is the input for side tone cancellation.
Line Current Sense Input
28
6
STB
LS
1
This is the input for sensing the line current.
Line Input
27
LI
This input is used for power extraction and line current sensing.
2/24
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SAMES [ SAMES ]
