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TS636 - DIFFERENTIAL VARIABLE GAIN AMPLIFIER FOR ADSL LINE INTERFACE

General Description

This TS636 is particularly intended for applications such as preamplification in telecommunication systems using multiple carriers.

It has been minly designed to fit with ADSL chip-sets such as ASCOT ADSL chip-set for CPE.

Key Features

  • a high input impedance and a low noise current. To minimize the overall noise figure, the source impedance must be less than 3kΩ. This value gives an equal contribution of voltage and current noises. The second stage is a gain/attenuation stage (+12dB to -9dB) featuring a low output impedance. This output stage can drive loads as low as 500Ω. v Input1 + _ _ Ouput1 + +Vcc1 v -Vcc Analog GND (AGND) v + + _ Ouput2 +Vcc2 Input2 _ v v GAIN.

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Datasheet Details

Part number TS636
Manufacturer STMicroelectronics
File Size 121.63 KB
Description DIFFERENTIAL VARIABLE GAIN AMPLIFIER FOR ADSL LINE INTERFACE
Datasheet download datasheet TS636 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TS636 DIFFERENTIAL VARIABLE GAIN AMPLIFIER FOR ADSL LINE INTERFACE s s s s LOW NOISE : 4.7nV/√Hz LOW DISTORTION HIGH SLEW RATE : 90V/µs WIDE BANDWIDTH : 52MHz @ -3dB & 18dB gain with 3dB STEPS s GAIN PROGRAMMABLE from -9dB to +30dB s POWER DOWN FUNCTION DESCRIPTION This TS636 is particularly intended for applications such as preamplification in telecommunication systems using multiple carriers. It has been minly designed to fit with ADSL chip-sets such as ASCOT ADSL chip-set for CPE. The TS636 is a differential digitally controled variable gain amplifier featuring a high slew rate of 90V/µs, a large bandwidth, a very low distortion and a very low current and voltage noise. The gain can be set from -9dB to +30dB through a 4bit digital word, with 3dB steps.