OPA320, OPA2320
OPA320S, OPA2320S
www.ti.com
SBOS513E –AUGUST 2010–REVISED JUNE 2013
Precision, 20MHz, 0.9pA, Low-Noise, RRIO,
CMOS Operational Amplifier with Shutdown
Check for Samples: OPA320, OPA2320, OPA320S, OPA2320S
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FEATURES
DESCRIPTION
The OPA320 (single) and OPA2320 (dual) are a new
generation of precision, low-voltage CMOS
operational amplifiers optimized for very low noise
and wide bandwidth while operating on a low
quiescent current of only 1.45mA.
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Precision with Zero-Crossover Distortion:
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Low Offset Voltage: 150μV (max)
High CMRR: 114dB
Rail-to-Rail I/O
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Low Input Bias Current: 0.9pA (max)
Low Noise: 7nV/√Hz at 10kHz
Wide Bandwidth: 20MHz
The OPA320 series is ideal for low-power, single-
supply applications. Low-noise (7nV/√Hz) and high-
speed operation also make them well-suited for
driving sampling analog-to-digital converters (ADCs).
Other applications include signal conditioning and
sensor amplification.
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Slew Rate: 10V/μs
Quiescent Current: 1.45mA/ch
Single-Supply Voltage Range: 1.8V to 5.5V
OPA320S, OPA2320S:
The OPA320 features a linear input stage with zero-
crossover distortion that delivers excellent common-
mode rejection ratio (CMRR) of typically 114dB over
the full input range. The input common-mode range
extends 100mV beyond the negative and positive
supply rails. The output voltage typically swings within
10mV of the rails.
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IQ in Shutdown Mode: 0.1μA
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Unity-Gain Stable
Small Packages:
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SOT23, MSOP, DFN
In addition, the OPAx320 have a wide supply voltage
range from 1.8V to 5.5V with excellent PSRR (106dB)
over the entire supply range, making them suitable
for precision, low-power applications that run directly
from batteries without regulation.
APPLICATIONS
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High-Z Sensor Signal Conditioning
Transimpedance Amplifiers
Test and Measurement Equipment
Programmable Logic Controllers (PLCs)
Motor Control Loops
The OPA320 (single version) is available in a SOT23-
5 package; the OPA320S shut-down single version is
available in an SOT23-6 package. The dual OPA2320
is offered in SO-8, MSOP-8, and DFN-8 packages,
and the OPA2320S (dual with shut-down) in an
MSOP-10 package.
Communications
Input/Output ADC/DAC Buffers
Active Filters
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PRODUCTION DATA information current as of publication date.
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