peb2260 Infineon Technologies Corporation, peb2260 Datasheet

peb2260

Manufacturer Part Number

peb2260

Description

Dual Channel Codec Filter Sicofi

Manufacturer

Infineon Technologies Corporation

Datasheet

1.PEB2260.pdf (1 pages)

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Dual Channel Codec Filter (SICOFI -2)

General Description

The Dual Channel Codec Filter PEB 2260 (SICOFI-2) is a

fully integrated PCM codec and filter fabricated in low power

CMOS technology for applications in digital communication

systems. Based on an advanced digital filter concept, the

PEB 2260 provides excellent transmission performance and

high flexibility. The digital signal processing approach

includes attractive programmable features such as

trans-hybrid balancing, impedance matching, gain and

frequency response correction.

The SICOFI-2 can be programmed to communicate either

with SLD or with IOM-2 compatible PCM-interface controllers

(e.g. PEB 2052/54/55).

The device bridges the gap between analog and digital voice

signal transmission in modern telecommunication systems.

A high performance oversampling Analog-to-Digital

Converter (ADC) and Digital-to-Analog Converter (DAC)

provide the conversion accuracy required. Analog

antialiasing Prefilters (PREFI) and smoothing Postfilters

(POFI) are included. The dedicated on-chip Digital Signal

Processor (DSP) handles all the algorithms necessary, e.g.

PCM bandpass filtering, sample rate conversion and PCM

companding. The SLD/lOM-2 interface handles digital voice

transmission, SICOFI-2 feature control and access to the

SICOFI-2 signaling pins. Specific filter programming is done

by downloading coefficients to the Coefficient RAM (CRAM).

Siemens Aktiengesellschaft

Block Diagram

VIN A

Channel A

VOUT A

VIN B

Channel B

VOUT B

PREFI

POFI

Type

PEB 2260-N

PEF 2260-N

Features

• Dual channel single chip codec and filter

• Band limitation according to CCITT and LSSGR

• Digital signal processing techniques

• PCM encoded digital voice

• Programmable digital filters for

• SLD- and lOM -2 interface

• Programmable signaling interface to

• High performance A/D and D/A conversion

• Programmable analog gain

• Advanced test capabilities

• No trimming or adjustments

• No external components

• Advanced low power CMOS technology

• Also available with extended temperature

recommendations

transmission (A-Law or -Law)

– impedance matching

– transhybrid balancing

– gain

– frequency response correction

peripherals (e.g. SLIC)

– three digital loopback modes

– two analog loopback modes

– two programmable tone generators

range – 40 C to 85 C (PEF 2260-N)

DSP

Interface

IOM ® -2

CRAM

SLD /

Package

P-LCC-28-1 (SMD)

ITB00385

PEB 2260

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