OPA322_1111 Datasheet, PDF (1/34 Pages) Texas Instruments – 20-MHz, Low-Noise, 1.8-V, RRI/O, CMOS Operational Amplifier with Shutdown

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OPA322, OPA322S
OPA2322, OPA2322S
OPA4322, OPA4322S
SBOS538C – JANUARY 2011 – REVISED NOVEMBER 2011
20-MHz, Low-Noise, 1.8-V, RRI/O,
CMOS Operational Amplifier with Shutdown
Check for Samples: OPA322, OPA322S, OPA2322, OPA2322S, OPA4322, OPA4322S
FEATURES
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•23 Gain Bandwidth: 20 MHz
• Low Noise: 8.5 nV/√Hz at 1 kHz
• Slew Rate: 10 V/μs
• Low THD+N: 0.0005%
• Rail-to-Rail I/O
• Offset Voltage: 2 mV (max)
• Supply Voltage: 1.8 V to 5.5 V
• Supply Current: 1.5 mA/ch
– Shutdown: 0.1 μA/ch
• Unity-Gain Stable
• Small Packages:
– SOT23, DFN, MSOP, TSSOP
APPLICATIONS
• Sensor Signal Conditioning
• Consumer Audio
• Multi-Pole Active Filters
• Control-Loop Amplifiers
• Communications
• Security
• Scanners
DESCRIPTION
The OPA322 series consists of single, dual, and
quad-channel CMOS operational amplifiers featuring
low noise and rail-to-rail inputs/outputs optimized for
low-power, single-supply applications. Specified over
a wide supply range of 1.8 V to 5.5 V, the low
quiescent current of only 1.5 mA per channel make
these devices well-suited for power-sensitive
applications.
The combination of very low noise (8.5 nV/√Hz at
1 kHz), high gain-bandwidth (20 MHz), and fast slew
rate (10 V/μs) make the OPA322 family ideal for a
wide range of applications, including signal
conditioning and sensor amplification requiring high
gains. Featuring low THD+N, the OPA322 series is
also excellent for consumer audio applications,
particularly for single-supply systems.
The OPAx322S models include a shutdown mode
allowing the amplifiers to be switched from normal
operation to a standby current that is typically less
than 0.1 μA.
The OPA322 (single version) is available in SOT23-5
and SOT23-6, while the OPA2322 (dual version) is
offered in MSOP-8, MSOP-10, SO-8, and DFN-8
packages. The quad versions OPA4322 come in
TSSOP-14 and TSSOP-16 packages. All versions are
specified for operation from –40°C to +125°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.
FilterPro is a trademark of Texas Instruments Incorporated.
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All other trademarks are the property of their respective owners.
3
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information 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 © 2011, Texas Instruments Incorporated