TS636
DIFFERENTIAL VARIABLE GAIN AMPLIFIER
FOR ADSL LINE INTERFACE
s
s
s
s
LOW NOISE
: 4.7nV/鈭欻z
LOW DISTORTION
HIGH SLEW RATE
: 90V/碌s
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 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/碌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
Input 2 3
LSB
GC1 4
D
SO14
(Plastic Micropackage)
PIN CONNECTIONS
(top view)
+Vcc1 1
14 +Vcc2
Input 1 2
13 Output 1
12 Output 2
11 Power Down
Gain Control
Logic Decoder
10 -Vcc
9 AGND
8 DGND
s
Preamplifier with automatic gain control for
Asymmetric Digital Subscriber Line (ADSL).
ORDER CODE
Package
Part Number
TS636I
Temperature Range
D
-40, +85擄C
鈥?/div>
GC2
5
GC3 6
7
MSB
GC4
D =
Small Outline Package (SO) - also available in Tape & Reel (DT)
January 2001
1/9
next