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PDF ( 数据手册 , 数据表 ) TS636

零件编号 TS636
描述 DIFFERENTIAL VARIABLE GAIN AMPLIFIER FOR ADSL LINE INTERFACE
制造商 STMicroelectronics
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TS636 数据手册, 描述, 功能
TS636
DIFFERENTIAL VARIABLE GAIN AMPLIFIER
FOR ADSL LINE INTERFACE
s LOW NOISE : 4.7nV/Hz
s LOW DISTORTION
s HIGH SLEW RATE : 90V/µs
s WIDE BANDWIDTH : 52MHz @ -3dB &
18dB gain
s GAIN PROGRAMMABLE from -9dB to +30dB
with 3dB STEPS
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/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
s Preamplifier with automatic gain control for
Asymmetric Digital Subscriber Line (ADSL).
ORDER CODE
Part Number Temperature Range
TS636I
-40, +85°C
Package
D
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
D
SO14
(Plastic Micropackage)
PIN CONNECTIONS (top view)
+Vcc1 1
Input 1 2
Input 2 3
LSB GC1 4
GC2 5
GC3 6
7
MSB GC4
14 +Vcc2
13 Output 1
12 Output 2
11 Power Down
10 -Vcc
9 AGND
8 DGND
January 2001
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TS636 pdf, 数据表
TS636
Output/Input Isolation in Power Down Mode vs.
Frequency
3rd Order Intermodulation
(2 tones : 180kHz and 280kHz)
-50
-60
-70
-80
-90
-100
-110
10kHz
100kHz
1MHz
Frequency
10MHz
-70
-75
60kHZ
90kHZ
-80
220kHZ
-85 230kHZ
-90
0
1
23
Vout peak (V)
4
5
3rd Order Intermodulation
(2 tones : 180kHz and 280kHz)
-70
-75
80kHZ
-80
-85 380kHZ
640kHZ
-90
0
740kHZ
1
23
Vout peak (V)
4
5
measurement conditions: Vcc=±6V, Rload=500Ω, Tamb=25°C
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