Overview

The PSB 4595 and PSB 4596 two-chip solution forms the complete front end of a modem or fax machine. This Analog Line Interface Solution (ALIS) consists of a DAA, a codec and a hybrid circuit, and bridges the gap between the phone line and the data pump. The analog PSB 4595 is manufactured in low-power BiCMOS technology and the digital PSB 4596 in CMOS technology.

Features

• ALIS substitutes data access arrangement (DAA), codec and hybrid

• Ring detection: level, frequency and cadence

• Caller ID: detection, decoding and storage

• Programmable to different country requirements

• Programmable DC characteristics

• ALIS supports V.34+ and V.90

• ALIS complies with ETS 300 001 and FCC requirements

• Isolation by digital capacitor interface

• Analog part powered from the tip/ring line by an integrated voltage regulator

• High performance analog-to-digital and digital-toanalog conversion

• DSP-based solution for adapting the transmission behavior, especially for

- AC impedance matching

- trans-hybrid balancing

- frequency response - gain

• Advanced test capabilities:

- digital loops

- analog loops

• High-pass filter in receive path to suppress line interference (50/60 Hz)

• Isolated control pins for general purpose use

• Advanced low-power 0.8µm analog BICMOS technology for ALIS analog and 0.8µm CMOS technology for ALIS digital

• Two-chip solution: the P-TSSOP24 and P-SSOP28 packages are PCMCIA-compliant