OPA2822
OPA
282
2
SBOS188C – MARCH 2001 – REVISED MAY 2004
Dual, Wideband, Low-Noise
Operational Amplifier
FEATURES
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LOW INPUT NOISE VOLTAGE: 2.0nV/
√Hz
HIGH UNITY GAIN BANDWIDTH: 500MHz
HIGH GAIN BANDWIDTH PRODUCT: 240MHz
HIGH OUTPUT CURRENT: 90mA
SINGLE +5V TO +12V OPERATION
LOW SUPPLY CURRENT: 4.8mA/ch
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.
Harmonic distortion for a 2V
PP
differential output operating
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.
APPLICATIONS
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xDSL DIFFERENTIAL LINE RECEIVERS
HIGH DYNAMIC RANGE ADC DRIVERS
LOW NOISE PLL INTEGRATORS
TRANSIMPEDANCE AMPLIFIERS
PRECISION BASEBAND I/Q AMPLIFIERS
ACTIVE FILTERS
OPA2677
R
O
n:1
OPA2822 RELATED PRODUCTS
xDSL Driver
R
O
FEATURES
High Slew Rate
R/R Input/Output
1.3nV Input Noise
SINGLES
OPA690
OPA353
OPA846
—
DUALS
OPA2690
OPA2353
OPA2686
THS6062
TRIPLES
OPA3690
—
—
—
500Ω
1kΩ
500Ω
1.5nV Input Noise
OPA2822
500Ω
1kΩ
xDSL Receiver
OPA2822
500Ω
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 © 2001-2004, Texas Instruments Incorporated
www.ti.com
TI [ TEXAS INSTRUMENTS ]
