FEATURES

Dual

±2.5V to ±6V

Single +5V to +12V

Maximum 25

°C Input Offset Voltage = ±750µV

Maximum 25

°C Input Offset Current = ±400nA

APPLICATIONS

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

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

QUADS

FEATURES

OPA354

OPA2354

—

OPA4354

CMOS RR Output

OPA690

OPA2690

OPA3690

—

High Slew Rate

—

OPA2652

—

—

SOT23-8

—

OPA2822

—

—

Low Noise

—

—

—

OPA4820

Quad OPA820

AC-Coupled, 14-Bit ADS850 Interface

OPA820

V

IN

402

Ω

402

Ω

ADS850

14−Bit

10MSPS

R

S

24.9

Ω

2k

Ω

2k

Ω

2k

Ω

2k

Ω

0.1

µF

0.1

µF

IN

IN

(+2V)

REFB

(+1V)

VREF

SEL

REFT

(+3V)

100pF

+5V

−5V

50

Ω

+5V

OPA820

SBOS303A − JUNE 2004 − REVISED JULY 2004

Unity-Gain Stable, Low-Noise, Voltage-Feedback

Operational Amplifier

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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Copyright

 2004, Texas Instruments Incorporated

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.

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