OPA820-HT

www.ti.com

SBOS587

– DECEMBER 2011

UNITY-GAIN STABLE, LOW-NOISE, VOLTAGE-FEEDBACK OPERATIONAL AMPLIFIER

Check for Samples: OPA820-HT

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FEATURES

•

High Bandwidth

SUPPORTS EXTREME TEMPERATURE

(240 MHz at 25

°C and 100 MHz at 210°C, G = 2)

APPLICATIONS

•

High Output Current

•

Controlled Baseline

(

±110 mA at 25°C and 50 mA at 210°C)

•

One Assembly/Test Site

•

Low Input Noise

•

One Fabrication Site

(2.5 nV/

√Hz at 25°C and 4.5 nV/√Hzat 210°C)

•

Available in Extreme (

–55°C/210°C)

•

Low Supply Current

(5.6 mA at 25

°C and 6.8 mA at 210°C)

•

Extended Product Life Cycle

•

Flexible Supply Voltage:

•

Extended Product-Change Notification

– Dual ±2.5 V to ±5 V

•

Product Traceability

– Single +5 V

•

Texas Instruments high temperature products

utilize highly optimized silicon (die) solutions

APPLICATIONS

with design and process enhancements to

•

Downhole Drilling

maximize performance over extended

•

Extreme Temperature Application

temperatures. All devices are characterized

and qualified for 1000 hour continuous

operating life at maximum rated temperature.

(1)

Custom temperature ranges available

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 6.8-mA supply current. The OPA820 complements this high-speed

operation with excellent DC precision in a low-power device. A worst-case input offset voltage of

±3.5 mV and an

offset current of

±700 nA give excellent absolute DC precision for pulse amplifier applications.

Minimal input and output voltage swing headroom allow the OPA820 to operate on a single 5-V supply with

>

converter (ADC) input ranges with lower power and noise than typical RR output op amps.

The OPA820 is characterized for operation from

–55°C to 210°C.

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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.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.