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OPA842 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce OPA842
Description  Wideband, Low Distortion, Unity-Gain Stable, Voltage-Feedback OPERATIONAL AMPLIFIER
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

OPA842 Fiches technique(HTML) 1 Page - Texas Instruments

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OPA842
SBOS267A – NOVEMBER 2002 – REVISED DECEMBER 2002
www.ti.com
DESCRIPTION
The OPA842 provides a level of speed and dynamic range
previously unattainable in a monolithic op amp. Using unity-
gain stable, voltage-feedback architecture with two internal
gain stages, the OPA842 achieves exceptionally low har-
monic distortion over a wide frequency range. The “classic”
differential input provides all the familiar benefits of precision
op amps, such as bias current cancellation and very low
inverting current noise compared with wideband current
differential gain/phase performance, low-voltage noise, and
high output current drive make the OPA842 ideal for most
high dynamic range applications.
Unity-gain stability makes the OPA842 particularly suitable
for low-gain differential amplifiers, transimpedance amplifi-
ers, gain of +2 video line drivers, wideband integrators, and
low-distortion Analog-to-Digital Converter (ADC) buffers.
Where higher gain or even lower harmonic distortion is
required, consider the OPA843—a higher-gain bandwidth
and lower-noise version of the OPA842.
FEATURES
q UNITY-GAIN BANDWIDTH: 400MHz
q GAIN-BANDWIDTH PRODUCT: 200MHz
q LOW INPUT VOLTAGE NOISE: 2.6nV/
√Hz
q VERY LOW DISTORTION: –93dBc (5MHz)
q HIGH OPEN-LOOP GAIN: 110dB
q FAST 12-BIT SETTLING: 22ns (0.01%)
q LOW DC VOLTAGE OFFSET: 300
µV Typical
q PROFESSIONAL LEVEL DIFF GAIN/PHASE ERROR:
0.003%/0.008
°
Copyright © 2002, Texas Instruments Incorporated
Wideband, Low Distortion, Unity-Gain Stable,
Voltage-Feedback OPERATIONAL AMPLIFIER
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.
APPLICATIONS
q ADC/DAC BUFFER DRIVER
q LOW DISTORTION “IF” AMPLIFIER
q ACTIVE FILTER CONFIGURATION
q LOW-NOISE DIFFERENTIAL RECEIVER
q HIGH-RESOLUTION IMAGING
q TEST INSTRUMENTATION
q PROFESSIONAL AUDIO
q OPA642 UPGRADE
INPUT NOISE
GAIN-BANDWIDTH
SINGLES
VOLTAGE (nV/√Hz )
PRODUCT (MHz)
OPA843
2.0
800
OPA846
1.1
2500
OPA847
0.8
3700
OPA842 RELATED PRODUCTS
OPA842
V
IN
402
402
ADS850
14-Bit
10MSPS
R
S
24.9
2k
2k
2k
2k
0.1
µF
0.1
µF
IN
IN
(+2V)
REFB
(+1V)
VREF
SEL
REFT
(+3V)
100pF
+5V
–5V
50
+5V
OPA842
AC-Coupled to 14-Bit ADS850 Interface
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.


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