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
A
GND
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.
2/24
sames
SAMES [ SAMES ]
