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PDF ( 数据手册 , 数据表 ) TS635

零件编号 TS635
描述 DUAL WIDE BAND OPERATIONAL AMPLIFIER FOR ADSL LINE INTERFACE
制造商 STMicroelectronics
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TS635 数据手册, 描述, 功能
TS635
DUAL WIDE BAND OPERATIONAL AMPLIFIER
FOR ADSL LINE INTERFACE
s LOW NOISE : 3.2nV/Hz, 1.5pA/Hz
s HIGH OUTPUT CURRENT : 160mA min.
s VERY LOW HARMONIC AND INTERMODU-
LATION DISTORTION
s HIGH SLEW RATE : 40V/µs
s SPECIFIED FOR 25LOAD
DESCRIPTION
This device is particularly intended for applications
where multiple carriers must be amplified simulta-
neously with very low intermodulation products. It
has been mainly designed to fit with ADSL
chip-set such as ST70134 or ST70135.
The TS635 is a high output current dual operation-
al amplifier, with a large gain-bandwidth product
(130MHz) and capable of driving a 25load at
12V power supply. The TS635 is fitted out with
Power Down function in order to decrease the
consumption.
The TS635 is housed in a SO8 plastic package
and a SO8 Exposed-Pad plastic package.
APPLICATION
s UPSTREAM line driver for Asymmetric Digital
Subscriber Line (ADSL) (NT).
ORDER CODE
Part
Number
TS635ID
TS635IDW
Temperature
Range
-40, +85°C
-40, +85°C
Package
D DW
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
DW = Small Outline Package in Exposed-Pad (SO) - also available in
Tape & Reel (DWT)
D
SO8
(Plastic Micropackage)
DW
SO8 Exposed-Pad
(Plastic Micropackage)
PIN CONNECTIONS (top view)
Output1 1
Inverting Input1 2
Non Inverting Input1 3
VCC - 4
_
+
8 VCC +
7 Output2
_ 6 Inverting Input2
+ 5 Non Inverting Input2
Cross Section View Showing Exposed-Pad
This pad can be connected to a (-Vcc) copper area on the PCB
December 2002
1/10







TS635 pdf, 数据表
TS635
CAPABILITIES
The table below shows the calculated compo-
nents for different values of k. In this case
R2=1000and the gain=16dB. The last column
displays the maximum amplitude level on the line
regarding the TS635 maximum output capabilities
(18Vpp diff.) and a 1:2 line transformer ratio.
Active matching
k
R1 R3 Rs
() () ()
1.3 820 1500 3.9
1.4 490 1600 5.1
1.5 360 2200 6.2
1.6 270 2400 7.5
1.7 240 3300 9.1
Passive matching
TS635 Output
Level to get
12.4Vpp on
the line
(Vpp diff)
8
8.7
9.3
9.9
10.5
12.4
Maximum
Line level
(Vpp diff)
27.5
25.7
25.3
23.7
22.3
18
MEASUREMENT OF THE POWER
CONSUMPTION
Conditions:
Power Supply: 12V
Passive impedance matching
Transformer turns ratio: 2
Maximun level required on the line: 12.4Vpp
Maximum output level of the driver: 12.4Vpp
Crest factor: 5.3 (Vp/Vrms)
The TS635 power consumption during emission
on 900 and 4550 meter twisted pair telephone
lines: 360mW
8/10














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