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PEB20591HV21, PEB2059H V2.1, PEB2060

Table of contents:
Info of PEB20591HV21
Info of PEB2059H V2.1
Info of PEB2060

PEB20591HV21, PEB2059H V2.1, PEB2060 Selling Leads, Datasheet

MFG:inf Package Cooled:0 D/C:15/tray/qfp

PEB20591HV21, PEB2059H V2.1, PEB2060 Picture

PEB20591HV21, PEB2059H V2.1, PEB2060 Datasheet download

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Part Number: PEB20591HV21

MFG: inf

Package Cooled: 0

D/C: 15/tray/qfp

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PEB2060 General Description

The Signal Processing Codec Filter (SICOFI) PEB 2060 is a fully integrated PCM codec (coder-decoder) and transmit/ receive filter produced in advanced CMOS technology for applications in digital exchange telecommunication systems.
Based on a digital filter concept the PEB 2060 provides improved transmission performance and high flexibility. It enables the control of the device's analog behavior by digital signal processing, including attractive features such as programmable trans-hybrid balancing, impedance matching,level control and frequency response correction. The device is optimized for working in conjunction with the PCM Interface Controller PEB 2052/55.

The analog input signal is A/D converted, digitally filtered and transmitted either PCM-encoded or linear. Antialiasing is done with a 2nd order Sallen-Key Prefilter (PREFI). The A/D Converter (ADC) is a modified slope adaptive interpolative coder with a sampling rate of 128 kHz. Digital downsampling to 8 kHz is done by subsequent decimation filters D1 and D2 together with the PCM bandpass filter (BP).

The digital input signal is received PCM encoded or linear,digitally filtered and D/A converted to generate the analog output signal. Digital interpolation up to 128 kHz is done by the PCM lowpass filter (LP) and the interpolation filters l1 and l2. The D/A Converter (DAC) output is fed to the 2nd order Sallen-Key Postfilter (POFI).

The high flexibility of the SICOFI is based on a variety of user programmable filter, which are analog gain adjustment AGR and AGX, digital gain adjustment GR and GX, frequency response adjustment R and X, impedance matching filter Z and the trans-hybrid balancing filter B.

The SICOFI bridges the gap between analog and digital voice signal transmission in modern telecommunication systems.

High performance oversampling Analog-to-Digital Converter (ADC) and Digital-to-Analog Converter (DAC) provide the
conversion accuracy required. An analog antialiasing Prefilter (PREFI) and smoothing Postfilter (POFI) is included.The dedicated on-chip Digital Signal Processor (DSP) handles all the algorithms necessary, e.g. PCM bandpass filtering, sample rate conversion and PCM comparing. The 3-pin serial SLD-Bus interface handles digital voice transmission and SICOFI feature control. Specific filter programming is done by downloading coefficients to the Coefficient RAM (CRAM).

The 10-pin parallel signaling interface provides for a powerful per line SLIC control.

PEB2060 Features

• Single-chip codec and filter
• Band limitation according to CClTT and LSSGR recommendations
• Digital signal processing techniques
• Digital voice transmission
PCM encoded (A-Law or -Law)
linear (16-bit 2s complement)
• Programmable digital filters for
impedance matching
transhybrid balancing
gain
frequency-response correction
• Configurable 3-pin serial interface
512-kHz SLD-Bus (e.g. to PEB 2052/55)
burst mode with bit rates up to 8 MHz
• Programmable signaling interface with peripherals (e.g. SLIC)
• High performance A/D and D/A conversion
• Programmable analog gain
• Advanced test capabilities
three digital loopback modes
two analog loopback modes
on-chip sinewave generation
• No trimming or adjustment
• No external components
• Variable SICOFI master clock selection
• Signaling expansion possible
• Prepared for three-party conferencing
• Advanced low power CMOS technology

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