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THS3122 Datasheet

  • THS3122

  • LOW-NOISE, HIGH-SPEED, 450 mA CURRENT FEEDBACK AMPLIFIERS

  • 20頁(yè)

  • TI

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THS3122
THS3125
SLOS382 鈭?SEPTEMBER 2001
LOW NOISE, HIGH SPEED, 450 mA
CURRENT FEEDBACK AMPLIFIERS
FEATURES
D
Low Noise
鈭?2.9 pA/鈭欻z Noninverting Current Noise
鈭?10.8 pA/鈭欻z Inverting Current Noise
鈭?2.2 nV/鈭欻z Voltage Noise
High Output Current, 450 mA
High Speed
鈭?128 MHz , 鈭? dB BW(R
L
= 50
鈩?
R
F
= 470
鈩?
鈭?1550 V/碌s Slew Rate (G = 2, R
L
= 50
鈩?
Wide Output Swing
鈭?26 V
PP
Output Voltage, R
L
= 50
鈩?/div>
Low Distortion
鈭?-80 dBc (1 MHz, 2 V
PP
, G = 2)
Low Power Shutdown Mode (THS3125)
鈭?370-碌A(chǔ) Shutdown Supply Current
Standard SOIC, SOIC PowerPAD錚? and
TSSOP PowerPAD Package
D
Line Drivers
D
Motor Drivers
D
Piezo Drivers
DESCRIPTION
The THS3122/5 are low-noise, high-speed current
feedback amplifiers, with high output current drive. This
makes them ideal for any application that requires low
distortion over a wide frequency with heavy loads. The
THS3122/5 can drive four serially terminated video
lines while maintaining a differential gain error less than
0.03%.
The high output drive capability of the THS3122/5
enables the devices to drive 50-鈩?loads with low
distortion over a wide range of output voltages:
鈭?0 鈭抎Bc THD at 2 V
PP
鈭?5 鈭抎Bc THD at 8 V
PP
The THS3122/5 can operate from
鹵5
V to
鹵15
V supply
voltages while drawing as little as 7.2 mA of supply
current per channel. They offer a low power shutdown
mode, reducing the supply current to only 370
碌A(chǔ).
The
THS3122/5 are packaged in a standard SOIC, SOIC
PowerPAD錚? and TSSOP PowerPAD packages.
D
D
D
D
D
D
APPLICATIONS
D
Video Distribution
D
Instrumentation
VOLTAGE NOISE AND CURRENT NOISE
vs
FREQUENCY
100
V n 鈭?Voltage Noise 鈭?nV/ Hz
I n 鈭?Current Noise 鈭?pA/ Hz
VCC =
鹵5
V to
鹵15
V
TA = 25擄C
In鈭?/div>
THS3122
SOIC (D) AND
SOIC PowerPAD
錚?/div>
(DDA) PACKAGE
(TOP VIEW)
THS3125
SOIC (D) AND
TSSOP PowerPAD
錚?/div>
(PWP) PACKAGE
(TOP VIEW)
10
In+
1 OUT
1 IN鈭?/div>
1 IN+
V
CC鈭?/div>
1
2
3
4
8
7
6
5
V
CC+
2 OUT
2 IN鈭?/div>
2 IN+
Vn
1 OUT
1 IN鈭?/div>
1 IN+
V
CC鈭?/div>
N/C
GND
N/C
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC+
2 OUT
2 IN鈭?/div>
2 IN+
N/C
SHUTDOWN
N/C
1
0.01
0.1
1
10
100
f 鈭?Frequency 鈭?kHz
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
錚?/div>
2001, Texas Instruments Incorporated
www.ti.com
1

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