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Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

OPA2822

SBOS188C – MARCH 2001 – REVISED MAY 2004

DESCRIPTION

The OPA2822 offers very low 2.0nV/

√Hz input noise in a

wideband, unity-gain stable, voltage-feedback architecture.

Intended for xDSL receiver applications, the OPA2822 also

supports this low input noise with exceptionally low harmonic

distortion, particularly in differential configurations. Adequate

output current is provided to drive the potentially heavy load

of a passive filter between this amplifier and the codec.

from +5V to +12V supplies is

≤ –100dBc through 1MHz input

frequencies. Operating on a low 4.8mA/ch supply current,

the OPA2822 can satisfy all xDSL receiver requirements

over a wide range of possible supply voltages—from a single

+5V condition, to

±5V, up to a single +12V design.

General-purpose applications on a single +5V supply will

benefit from the high input and output voltage swing available

on this reduced supply voltage. Low-cost precision integra-

tors for PLLs will also benefit from the low voltage noise and

offset voltage. Baseband I/Q receiver channels can achieve

almost perfect channel match with noise and distortion to

support signals through 5MHz with > 14-bit dynamic range.

FEATURES

q LOW INPUT NOISE VOLTAGE: 2.0nV/

√Hz

q HIGH UNITY GAIN BANDWIDTH: 500MHz

q HIGH GAIN BANDWIDTH PRODUCT: 240MHz

q HIGH OUTPUT CURRENT: 90mA

q SINGLE +5V TO +12V OPERATION

q LOW SUPPLY CURRENT: 4.8mA/ch

Dual, Wideband, Low-Noise

Operational Amplifier

APPLICATIONS

q xDSL DIFFERENTIAL LINE RECEIVERS

q HIGH DYNAMIC RANGE ADC DRIVERS

q LOW NOISE PLL INTEGRATORS

q TRANSIMPEDANCE AMPLIFIERS

q PRECISION BASEBAND I/Q AMPLIFIERS

q ACTIVE FILTERS

FEATURES

SINGLES

DUALS

TRIPLES

High Slew Rate

OPA690

OPA2690

OPA3690

R/R Input/Output

OPA353

OPA2353

—

1.3nV Input Noise

OPA846

OPA2686

—

1.5nV Input Noise

—

THS6062

—

OPA2822 RELATED PRODUCTS

xDSL Driver

OPA2677

xDSL Receiver

500

Ω

500

Ω

500

Ω

R

O

OPA2822

OPA2822

1k

Ω

500

Ω

n:1

1k

Ω

R

O

OPA2

822

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Copyright © 2001-2004, Texas Instruments Incorporated

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