OAXQ Datasheet

1.8-V, microPower, CMOS Operational Amplifiers, Zero-Drift Series


The OPAx333 series of CMOS operational amplifiers use a proprietary auto-calibration technique to simultaneously provide very low offset voltage (10 μV, maximum) and near-zero drift over time and temperature. These miniature, high-precision, low quiescent current amplifiers offer 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. These devices are optimized for low-voltage, single-supply operation.
The OPAx333 family 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 OPA333 (single version) is available in the 5-pin SOT-23, SOT, and 8-pin SOIC packages, while the OPA2333 (dual version) is available in the 8-pin VSON, SOIC, and VSSOP packages. All versions are specified for operation from –40°C to 125°C.

• Low Offset Voltage: 10 μV (Maximum)
• Zero Drift: 0.05 μV/°C (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 Packages: SC70 and SOT23

• Transducers
• Temperature Measurements
• Electronic Scales
• Medical Instrumentation
• Battery-Powered Instruments
• Handheld Test Equipment



Manufacturer information


Texas Instruments introduction - Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today.

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