Features: · Adjusts sending and receiving attenuation length· Regulated voltage for dialer· Linear interface for DTMF· Suitable for ceramic transducers· Mute functionPinoutSpecifications Parameter Symbol Value Unit Line Voltage (3msec max) VL 22 V Forward Line C...
KA8501A: Features: · Adjusts sending and receiving attenuation length· Regulated voltage for dialer· Linear interface for DTMF· Suitable for ceramic transducers· Mute functionPinoutSpecifications Parame...
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Parameter |
Symbol |
Value
|
Unit |
Line Voltage (3msec max) |
VL |
22 |
V |
Forward Line Current |
ILF |
150 |
mA |
Reverse Line Current |
ILR |
-150 |
mA |
Power Dissipation (Ta = 70°C) |
PD |
1 |
W |
Operating temperature |
TOPR |
- 45 ~ + 70 |
°C |
Storage temperature |
TSTG |
-65 ~ +150 |
°C |
The KA8501A is a telephone speech network integrated circuit which includes transmit amp, receive amp, DTMF amp, voltage regulator, line equalizer, voltage comparator. It handles the voice signal, performing the 2/4 wires interface and changing the gain on both sending and receiving amplifiers to compensate the line current. The KA8501A can work in fixed gain mode.