TP3056B

Supply voltage, V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Supply voltage, V_BB (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   . . . . . . . . . . . . . . . . . . . . 7 V
Voltage range at any analog input or output . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . V_CC +0.3 V to V_BB 0.3 V
Voltage range at any digital input or output . . . . . . . . . . . . . . . . . . . . . . . .. . V_CC +0.3 V to ANLG GND 0.3 V
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . See Dissipation Rating Table
Operating free-air temperature range: TP3056B . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . 0°C to 70°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: DW or N package  . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltages are with respect to GND

The TP3056B monolithic serial interface combined PCM codec and filter device is comprised of a single-chip PCM codec (pulse code-modulated encoder and decoder) and analog filters. This TP3056B device provides all the functions required to interface a full-duplex (2-wire) voice telephone circuit with a TDM (time-division-multiplexed) system. Primary applications include:
• Line interface for digital transmission and switching of T1/E1 carrier, PABX, and central office telephone systems
• Subscriber line concentrators
• Digital-encryption systems
• Digital voice-band data-storage systems
• Digital signal processing

The TP3056B is designed to perform the transmit encoding (A/D conversion) and receive decoding (D/A conversion), and the appropriate filtering of analog signals in a PCM system. This device is intended to be used at the analog termination of a PCM line or trunk. It requires a master clock of 2.048 MHz, a transmit/receive data clock that is synchronous with the master clock (but can vary from 64 kHz to 2.048 MHz), and transmit and receive frame-sync pulses. The TP3056B contains patented circuitry to achieve low transmit channel idle noise and is not recommended for applications in which the composite signals on the transmit side are below 55 dBm0.

This TP3056B device, available in 16-pin N PDIP (plastic dual-in-line package) and 16-pin DW SOIC (small outline IC) packages, is characterized for operation from 0°C to 70°C.