Overview
The OPA333A-EP, produced by Texas Instruments, is a high-precision, micropower CMOS operational amplifier. This device is part of the OPA333 series, which utilizes a proprietary auto-calibration technique to provide very low offset voltage and near-zero drift over time and temperature. The OPA333A-EP is optimized for low-voltage single-supply operation, making it suitable for a wide range of applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage | 1.8 | 5.5 | V | |
| Input Offset Voltage (VOS) | 2 | 10 | μV | |
| Input Offset Voltage Drift (dVOS/dT) | 0.02 | 0.05 | μV/°C | |
| Quiescent Current | 17 | μA | ||
| Input Bias Current (IB) | ±70 | ±200 | pA | |
| Operating Temperature Range | –40 | 125 | °C | |
| Common-Mode Rejection Ratio (CMRR) | High CMRR without crossover | |||
| Power-Supply Rejection Ratio (PSRR) | 1 | 5 | μV/V |
Key Features
- Low Offset Voltage: Maximum of 10 μV, ensuring high dc accuracy.
- Zero-Drift Architecture: Provides ultra-low offset voltage and near-zero offset voltage drift over time and temperature.
- Low Quiescent Current: 17 μA, making it suitable for battery-powered and low-power applications.
- Single-Supply Operation: Operates from 1.8 V to 5.5 V, with rail-to-rail input and output.
- High Common-Mode Rejection Ratio (CMRR): Without the crossover associated with traditional complementary input stages.
- MicroSize Packages: Available in SC70 and SOT-23 packages.
- Extended Product Life Cycle and Traceability: Supports defense, aerospace, and medical applications with controlled baseline, one assembly/test site, and one fabrication site.
Applications
- Transducer Applications: Suitable for precise signal conditioning.
- Temperature Measurements: Ideal for high-precision temperature sensing.
- Electronic Scales: Used in weight measurement systems requiring high accuracy.
- Medical Instrumentation: Supports medical devices with stringent precision requirements.
- Battery-Powered Instruments: Optimized for low power consumption.
- Handheld Test Equipment: Suitable for portable test and measurement devices.
Q & A
- What is the maximum input offset voltage of the OPA333A-EP?
The maximum input offset voltage is 10 μV.
- What is the quiescent current of the OPA333A-EP?
The quiescent current is 17 μA.
- What is the operating temperature range of the OPA333A-EP?
The operating temperature range is from –40°C to 125°C.
- Does the OPA333A-EP support rail-to-rail input and output?
- What are the typical applications of the OPA333A-EP?
Typical applications include transducer applications, temperature measurements, electronic scales, medical instrumentation, battery-powered instruments, and handheld test equipment).
- What is the supply voltage range for the OPA333A-EP?
The supply voltage range is from 1.8 V to 5.5 V).
- Does the OPA333A-EP have high common-mode rejection ratio (CMRR)?
- What package types are available for the OPA333A-EP?
- Is the OPA333A-EP suitable for defense, aerospace, and medical applications?
- What is the input bias current of the OPA333A-EP?
