THS3112
THS3115
SLOS385 鈥?SEPTEMBER 2001
LOW-NOISE, HIGH-SPEED CURRENT FEEDBACK AMPLIFIERS
FEATURES
D
Low Noise
鈥?2.9 pA/鈭欻z Noninverting Current Noise
鈥?10.8 pA/鈭欻z Inverting Current Noise
鈥?2.2 nV/鈭欻z Voltage Noise
Wide Supply Voltage Range
鹵
5 V to
鹵
15 V
Wide Output Swing
鈥?25 V
PP
Output Voltage, R
L
= 100
鈩? 鹵
15-V
Supply
High Output Current, 150 mA (Min)
High Speed
鈥?110 MHz (鈥? dB, G=1,
鹵
15 V)
鈥?1550 V/碌s Slew Rate (G = 2,
鹵
15 V)
Low Distortion, G = 2
鈥?-78 dBc (1 MHz, 2 V
PP
, 100-鈩?load)
Low Power Shutdown (THS3115)
鈥?300-碌A(chǔ) Shutdown Quiescent Current Per
Channel
Thermal Shutdown and Short Circuit
Protection
Standard SOIC, SOIC PowerPAD錚? and
TSSOP PowerPAD錚?Package
Evaluation Module Available
VOLTAGE NOISE AND CURRENT NOISE
vs
FREQUENCY
100
V n 鈥?Voltage Noise 鈥?nV/ Hz
I n 鈥?Current Noise 鈥?pA/ Hz
VCC =
鹵5
V to
鹵15
V
TA = 25擄C
In鈥?/div>
D
D
D
D
D
D
D
D
D
APPLICATIONS
D
Communication Equipment
D
Video Distribution
D
Motor Drivers
D
Piezo Drivers
DESCRIPTION
The THS3112/5 are low-noise, high-speed current
feedback amplifiers, ideal for any application requiring
high output current. The low noninverting current noise
of 2.9 pA/鈭欻z and the low inverting current noise of 10.8
pA/鈭欻z increase signal to noise ratios for enhanced
signal resolution. The THS3112/5 can operate from
鹵5-V
to
鹵15-V
supply voltages, while drawing as little as
4.5 mA of supply current per channel. It offers low
鈥?8-dBc total harmonic distortion driving 2 V
PP
into a
100-鈩?load. The THS3115 features a low power
shutdown mode, consuming only 300-碌A(chǔ) shutdown
quiescent current per channel. The THS3112/5 is
packaged in a standard SOIC, SOIC PowerPAD錚? and
TSSOP PowerPAD packages.
THS3112
SOIC (D) AND
SOIC PowerPAD
錚?/div>
(DDA) PACKAGE
(TOP VIEW)
THS3115
SOIC (D) AND
TSSOP PowerPAD
錚?/div>
(PWP) PACKAGE
(TOP VIEW)
10
In+
1 OUT
1 IN鈥?/div>
1 IN+
V
CC鈥?/div>
1
2
3
4
8
7
6
5
V
CC+
2 OUT
2 IN鈥?/div>
2 IN+
Vn
1 OUT
1 IN鈥?/div>
1 IN+
V
CC鈥?/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鈥?/div>
2 IN+
N/C
SHUTDOWN
N/C
1
10
100
1K
10 K
100 K
f 鈥?Frequency 鈥?Hz
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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