1/9

√Hz

µs

18dB gain

with 3dB STEPS

DESCRIPTION

This TS636 is particularly intended for applica-

tions such as preamplification in telecommunica-

tion 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 vari-

able 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.

The gain monotonicity is guaranteed by design.

The TS636 comes in SO-14 plastic packages.

APPLICATION

Asymmetric Digital Subscriber Line (ADSL).

ORDER CODE

D = Small Outline Package (SO) - also available in Tape & Reel (DT)

PIN CONNECTIONS (top view)

Part Number

Temperature Range

Package

D

TS636I

-40, +85°C

•

D

SO14

(Plastic Micropackage)

+Vcc2

Input 1

Input 2

-Vcc

DGND

LSB

GC1

GC2

GC3

MSB

GC4

Output 1

1

2

3

4

5

6

7

14

13

12

11

10

9

8

Output 2

AGND

Power Down

+Vcc1

TS636

DIFFERENTIAL VARIABLE GAIN AMPLIFIER

FOR ADSL LINE INTERFACE

January 2001