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Burr-Brown Corporation - Unity-Gain Stable/ Low-Noise/ Voltage-Feedback Operational Amplifier

Numéro de référence OPA820IDR
Description Unity-Gain Stable/ Low-Noise/ Voltage-Feedback Operational Amplifier
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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OPA820IDR fiche technique
OPA820
SBOS303A − JUNE 2004 − REVISED JULY 2004
Unity-Gain Stable, Low-Noise, Voltage-Feedback
Operational Amplifier
FEATURES
D HIGH BANDWIDTH (240MHz, G = +2)
D HIGH OUTPUT CURRENT (±110mA)
D LOW INPUT NOISE (2.5nV/Hz)
D LOW SUPPLY CURRENT (5.6mA)
D FLEXIBLE SUPPLY VOLTAGE
Dual ±2.5V to ±6V
Single +5V to +12V
D EXCELLENT DC ACCURACY
Maximum 25°C Input Offset Voltage = ±750µV
Maximum 25°C Input Offset Current = ±400nA
APPLICATIONS
D LOW-COST VIDEO LINE DRIVERS
D ADC PREAMPLIFIERS
D ACTIVE FILTERS
D LOW-NOISE INTEGRATORS
D PORTABLE TEST EQUIPMENT
D OPTICAL CHANNEL AMPLIFIERS
D LOW-POWER, BASEBAND AMPLIFIERS
D CCD IMAGING CHANNEL AMPLIFIERS
D OPA650 AND OPA620 UPGRADE
DESCRIPTION
The OPA820 provides a wideband, unity-gain stable,
voltage-feedback amplifier with a very low input noise voltage
and high output current using a low 5.6mA supply current. At
unity-gain, the OPA820 gives > 800MHz bandwidth with < 1dB
peaking. The OPA820 complements this high-speed
operation with excellent DC precision in a low-power device.
A worst-case input offset voltage of ±750µV and an offset
current of ±400nA give excellent absolute DC precision for
pulse amplifier applications.
Minimal input and output voltage swing headroom allow the
OPA820 to operate on a single +5V supply with > 2VPP output
swing. While not a rail-to-rail (RR) output, this swing will
support most emerging analog-to-digital converter (ADC)
input ranges with lower power and noise than typical RR
output op amps.
Exceptionally low dG/dP (0.01%/0.03°) supports low-cost
composite video line driver applications. Existing designs can
use the industry-standard pinout SO-8 package while
emerging high-density portable applications can use the
SOT23-5. Offering the industry’s lowest thermal impedance in
a SOT package, along with full specification over both the
commercial and industrial temperature ranges, gives solid
performance over a wide temperature range.
RELATED PRODUCTS
SINGLES DUALS TRIPLES
OPA354
OPA690
OPA2354
OPA2690
OPA2652
OPA2822
OPA3690
QUADS
OPA4354
OPA4820
FEATURES
CMOS RR Output
High Slew Rate
SOT23-8
Low Noise
Quad OPA820
+5V
+5V
RS 2k2k
VIN 0.1µF 24.9
OPA820
50
100pF
REFT
(+3V)
IN
5V
402
2k
ADS850
14−Bit
10MSPS
IN
402
0.1µF
2k
(+2V) (+1V)
REFB VREF SEL
AC-Coupled, 14-Bit ADS850 Interface
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.
All trademarks are the property of their respective owners.
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 2004, Texas Instruments Incorporated
www.ti.com

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