OPA322, OPA322S
OPA2322, OPA2322S
OPA4322, OPA4322S
www.ti.com
SBOS538E –JANUARY 2011–REVISED JUNE 2012
20-MHz, Low-Noise, 1.8-V, RRI/O,
CMOS Operational Amplifier with Shutdown
Check for Samples: OPA322, OPA322S, OPA2322, OPA2322S, OPA4322, OPA4322S
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FEATURES
DESCRIPTION
The OPA322 series consists of single, dual, and
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Gain Bandwidth: 20 MHz
Low Noise: 8.5 nV/√Hz at 1 kHz
Slew Rate: 10 V/μs
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 makes
these devices well-suited for power-sensitive
applications.
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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
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.
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Shutdown: 0.1 μA/ch
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Unity-Gain Stable
Small Packages:
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SOT23, DFN, MSOP, TSSOP
APPLICATIONS
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.
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Sensor Signal Conditioning
Consumer Audio
Multi-Pole Active Filters
Control-Loop Amplifiers
Communications
Security
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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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
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Copyright © 2011–2012, Texas Instruments Incorporated