PCA1070 Description
The PCA1070 is a CMOS integrated circuit performing all speech and line interface functions in fully electronic telephone sets. The device requires a minimum of external ponents. The transmission parameters are programmable via the I2C-bus.
PCA1070 Key Features
- Voltage regulator with programmable DC voltage drop
- Programmable set impedance
- Output to control an external switching MOS transistor for pulse dialling
- Programmable DC voltage during pulse dialling
- Circuitry for short DC settling time
- Supply for microcontroller and DTMF diallers
- Input to sense supply voltage of microcontroller and output for reset of microcontroller
- I2C-bus (programming of parameters, control of all logic signals)
- High impedance DTMF signal input
- Input for external oscillator signal with on-chip DC blocking