Overview
The OPA333AIDBVT, produced by Texas Instruments, is a micropower, 1.8-V, zero-drift CMOS precision operational amplifier. This device is part of the OPAx333 family, which utilizes a proprietary auto-calibration technique to provide very low offset voltage and near-zero drift over time and temperature. The OPA333AIDBVT is designed for low-voltage, single-supply operation and is optimized for high precision and low power consumption, making it suitable for a wide range of general-purpose applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Low Offset Voltage | 10 | µV (Maximum) |
| Zero Drift | 0.05 | µV/°C (Maximum) |
| 0.01-Hz to 10-Hz Noise | 1.1 | µV |
| Quiescent Current | 17 | µA |
| Supply Voltage | 1.8 V to 5.5 V | V |
| Input/Output Configuration | Rail-to-Rail | |
| Operating Temperature Range | -40°C to 125°C | °C |
| Package Types | SOT-23, SC70, SOIC |
Key Features
- Low Offset Voltage and Drift: The OPA333AIDBVT features a maximum offset voltage of 10 µV and a near-zero drift of 0.05 µV/°C, ensuring high dc accuracy.
- Low Power Consumption: With a quiescent current of only 17 µA, this amplifier is suitable for battery-powered and low-power applications.
- Rail-to-Rail Input/Output: The amplifier offers rail-to-rail input and output stages, allowing the input to operate within 100 mV beyond the supply rails and the output to swing within 50 mV of the rails.
- Single or Dual Supply Operation: The device can operate on single or dual supplies ranging from 1.8 V to 5.5 V (±0.9 V to ±2.75 V).
- High Common-Mode Rejection Ratio (CMRR): The OPA333AIDBVT provides excellent CMRR without the crossover associated with traditional complementary input stages, making it superior for driving analog-to-digital converters (ADCs).
- Compact Packages: Available in micro-size packages such as SOT-23 and SC70, making it ideal for space-constrained designs.
Applications
- Analog-to-Digital Converter (ADC) Drivers: The OPA333AIDBVT is well-suited for driving ADCs due to its high CMRR and low offset voltage, ensuring minimal degradation of differential linearity.
- Temperature Sensing: The low drift and high precision of the OPA333AIDBVT make it suitable for temperature sensing applications using thermistors or other temperature sensors.
- Current Sensing and Measurement: The amplifier can be used in current sensing circuits, such as high-side current sensing, due to its rail-to-rail input and output capabilities.
- Low-Voltage and Low-Power Systems: Ideal for battery-powered devices and other low-voltage, low-power applications where high precision and low quiescent current are critical.
- General-Purpose Amplification: Suitable for a wide range of general-purpose amplification tasks requiring high precision and low power consumption.
Q & A
- What is the maximum offset voltage of the OPA333AIDBVT?
The maximum offset voltage is 10 µV.
- What is the drift over temperature for the OPA333AIDBVT?
The drift over temperature is 0.05 µV/°C (maximum).
- What is the quiescent current of the OPA333AIDBVT?
The quiescent current is 17 µA.
- What is the supply voltage range for the OPA333AIDBVT?
The supply voltage range is from 1.8 V to 5.5 V (±0.9 V to ±2.75 V).
- Does the OPA333AIDBVT support rail-to-rail input and output?
Yes, it supports rail-to-rail input and output.
- What are the available package types for the OPA333AIDBVT?
The available package types are SOT-23, SC70, and SOIC.
- What is the operating temperature range for the OPA333AIDBVT?
The operating temperature range is from -40°C to 125°C.
- Is the OPA333AIDBVT suitable for driving analog-to-digital converters (ADCs)?
Yes, it is well-suited for driving ADCs due to its high CMRR and low offset voltage.
- Can the OPA333AIDBVT be used in low-voltage and low-power systems?
Yes, it is ideal for low-voltage and low-power systems due to its low quiescent current and high precision.
- What are some common applications of the OPA333AIDBVT?
Common applications include ADC drivers, temperature sensing, current sensing, and general-purpose amplification.
