1 Features
1• Low Offset Voltage: 10 μV (Maximum)
• Zero Drift: 0.05 μV/°C (Maximum)
• Specified Start-Up Time: 500 μs (Maximum)
• 0.01-Hz to 10-Hz Noise: 1.1 μVPP
• Quiescent Current: 17 μA
• Single-Supply Operation
• Supply Voltage: 1.8 V to 5.5 V
• Rail-to-Rail Input/Output
• microSize Package: 2-mm × 2-mm WSON

2 Applications
• Smartphones
• Wearables
• Fitness and Healthcare Products
• Electronic Scales
• Medical Instrumentation
• Battery-Powered Instruments
• Handheld Test Equipment
• Circuit Breakers

3 Description
The OPA2333P is a CMOS operational amplifier that
uses a proprietary auto-calibration technique to
simultaneously provide very low offset voltage (10 μV,
maximum) and near-zero drift over time and
temperature. This miniature, high-precision, low
quiescent current amplifier offers high-impedance
inputs that have a common-mode range 100 mV
beyond the rails, and rail-to-rail output that swings
within 50 mV of the rails. Single or dual supplies as
low as 1.8 V (±0.9 V) and up to 5.5 V (±2.75 V) can
be used. This device is optimized for low-voltage,
single-supply operation.
The OPA2333P also features a specified maximum
start-up time. Specified start-up time ensures highprecision
performance after 500 μs of powering the
amplifier, allowing for reliable use in dynamic supply
operation.
The OPA2333P offers excellent CMRR without the
crossover associated with traditional complementary
input stages. This design results in superior
performance for driving analog-to-digital converters
(ADCs) without degradation of differential linearity.
The OPA2333P is available in a 2-mm × 2-mm 8-pin
WSON package and is specified for operation from
–40°C to 125°C.