PCA1070 is a multistandard programmable analog CMOS transmission IC with features including line interface, peripheral circuit interface, and microphone and DTMF amplifiers.
The Philips PCA1070 is an integrated circuit designed to perform all speech and line interface functions in fully electronic telephone sets. It requires a minimum of external components and allows transmission parameters to be programmed via the I2C-bus, making it adaptable to various country requirements and speech transducers.
Key features include a line interface with voltage regulation, programmable set impedance, and output control for pulse dialling. The device incorporates microphone and DTMF amplifiers with programmable gain, as well as a receiving amplifier suitable for various earpiece types. It also includes facilities to regulate parameters based on line current.
| Package Type (PCA1070P) | DIP24 plastic dual in-line package; 24 leads (600 mil) |
|---|---|
| Programmable DC Voltage Drop Range | 3.1 to 5.9 V |
| Internal Current Consumption (IDD) | 2.3 mA |
The default DC voltage drop at pin SLPE is 4.7 V.
In power-down mode, the typical current consumption at pin VDD is reduced to 30 µA.
The internal reset circuit activates when the supply voltage VDD is below 1.2 V.