Overview
The OPA333AIDR is a high-precision, low quiescent current operational amplifier from Texas Instruments. It is part of the OPAx333 series, which utilizes a proprietary auto-calibration technique to provide very low offset voltage and near-zero drift over time and temperature. This miniature amplifier offers high-impedance inputs with a common-mode range 100 mV beyond the rails and rail-to-rail output that swings within 50 mV of the rails. It is optimized for low-voltage, single-supply operation and can be used with supply voltages ranging from 1.8 V to 5.5 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Offset Voltage | 10 μV (Maximum) | μV |
| Offset Voltage Drift | 0.05 μV/°C (Maximum) | μV/°C |
| Bandwidth | 350 kHz | kHz |
| Slew Rate | 0.16 V/μs | V/μs |
| Quiescent Current | 17 μA | μA |
| Supply Voltage Range | 1.8 V to 5.5 V | V |
| Input Bias Current | 70 pA | pA |
| Output Voltage Swing | Within 50 mV of the rails | mV |
| Operating Temperature Range | –40°C to 125°C | °C |
| Package Type | SOIC-8, SOT-23, etc. |
Key Features
- High-precision, low quiescent current operational amplifier
- Proprietary auto-calibration technique for low offset voltage and near-zero drift
- High-impedance inputs with a common-mode range 100 mV beyond the rails
- Rail-to-rail output that swings within 50 mV of the rails
- Single or dual supply operation from 1.8 V to 5.5 V
- Unity-gain stable and free from unexpected output phase reversal
- Excellent CMRR without crossover associated with traditional complementary input stages
- Low noise: 0.1-Hz to 10-Hz noise of 1.1 μVPP
- Micro-size packages available (SC70 and SOT23)
Applications
- Transducers
- Temperature Measurements
- Electronic Scales
- Medical Instrumentation
- Battery-Powered Instruments
- Handheld Test Equipment
- High-Side Voltage-to-Current (V-I) Converters
- Driving Analog-to-Digital Converters (ADCs) without degradation of differential linearity
Q & A
- What is the offset voltage of the OPA333AIDR?
The offset voltage of the OPA333AIDR is 10 μV (maximum).
- What is the operating temperature range of the OPA333AIDR?
The operating temperature range is –40°C to 125°C.
- What is the bandwidth of the OPA333AIDR?
The bandwidth of the OPA333AIDR is 350 kHz.
- What is the quiescent current of the OPA333AIDR?
The quiescent current is 17 μA.
- What are the supply voltage ranges for the OPA333AIDR?
The supply voltage range is from 1.8 V to 5.5 V.
- What are the common-mode input and output characteristics of the OPA333AIDR?
The input common-mode range extends 100 mV beyond the supply rails, and the output is rail-to-rail, swinging within 50 mV of the rails).
- What are some typical applications of the OPA333AIDR?
Typical applications include transducers, temperature measurements, electronic scales, medical instrumentation, battery-powered instruments, and handheld test equipment).
- How does the OPA333AIDR handle noise?
The OPA333AIDR has a low noise profile, with 0.1-Hz to 10-Hz noise of 1.1 μVPP).
- What packages are available for the OPA333AIDR?
The OPA333AIDR is available in packages such as SOIC-8, SOT-23, and others).
- Is the OPA333AIDR suitable for driving ADCs?
Yes, the OPA333AIDR is suitable for driving analog-to-digital converters (ADCs) without degradation of differential linearity due to its excellent CMRR and zero-drift architecture).
