![](http://datasheet.mmic.net.cn/290000/TS636_datasheet_16164590/TS636_1.png)
1/9
I
LOW NOISE
: 4.7nV/
√
Hz
I
LOW DISTORTION
I
HIGH SLEW RATE
: 90V/
μ
s
I
WIDE BANDWIDTH :
52MHz
@ -3dB &
18dB gain
I
GAIN PROGRAMMABLE from -9dB to +30dB
with 3dB STEPS
I
POWER DOWN FUNCTION
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/
μ
s, 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
I
Preamplifier with automatic gain control for
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
G
L
TS636
DIFFERENTIAL VARIABLE GAIN AMPLIFIER
FOR ADSL LINE INTERFACE
January 2001