Overview
The OPA333AIDCKTG4, produced by Texas Instruments, is part of the OPAx333 family of Zero-Drift, low-power, CMOS operational amplifiers. These devices are designed for general-purpose applications and are notable for their ultra-low offset voltage and near-zero offset voltage drift. The OPA333 operates from a supply voltage range of 1.8 V to 5.5 V, making it suitable for a wide range of low-voltage, single-supply operations. The proprietary auto-calibration technique used in these amplifiers ensures low initial offset voltage and minimal drift over time and temperature, enhancing their precision and reliability.
Key Specifications
| Parameter | Test Conditions | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| Supply Voltage | 1.8 | 5.5 | V | ||
| Input Offset Voltage (VOS) | VS = 5 V | 2 | 10 | μV | |
| Input Offset Voltage Drift (dVOS/dT) | TA = –40°C to 125°C | 0.02 | 0.05 | μV/°C | |
| Power-Supply Rejection Ratio (PSRR) | VS = 1.8 V to 5.5 V, TA = –40°C to 125°C | 1 | 5 | μV/V | |
| Input Bias Current (IB) | TA = 25°C | ±70 | ±200 | pA | |
| Slew Rate (SR) | G = +1 | 0.16 | V/μs | ||
| Output Voltage Swing | RL = 10 kΩ | 30 | 50 | mV | |
| Short-Circuit Current (ISC) | ±5 | mA | |||
| Quiescent Current per Amplifier (IQ) | IO = 0 A | 17 | 25 | μA | |
| Operating Temperature Range | –40 | 125 | °C | ||
| Storage Temperature Range | –65 | 150 | °C |
Key Features
- Zero-Drift Architecture: Provides ultra-low offset voltage and near-zero offset voltage drift, ensuring high precision and stability over time and temperature.
- Low Power Consumption: Operates with a quiescent current as low as 17 μA per amplifier, making it suitable for battery-powered and low-power applications.
- Rail-to-Rail Input and Output: The input common-mode voltage range extends 0.1 V beyond the supply rails, and the output stage can swing to within 50 mV of the positive rail.
- Unity-Gain Stable: Free from unexpected output phase reversal, ensuring stable operation in various configurations.
- Wide Supply Voltage Range: Operates from 1.8 V to 5.5 V, accommodating a variety of power supply conditions.
- High Precision: Optimized for low-voltage, single-supply operation with an output swing that fully controls the gate of MOSFET devices within the supply rails.
- Thermal Stability: Designed to minimize thermoelectric effects by using low thermoelectric-coefficient conditions and thermal isolation from power supplies and heat sources.
Applications
- General-Purpose Amplification: Suitable for a wide range of general-purpose applications requiring low offset voltage and high precision.
- Medical Devices: Used in medical applications such as ECG circuits due to its low noise and high precision.
- Industrial Automation: Applied in industrial automation for precise control and measurement tasks.
- Consumer Electronics: Found in consumer electronics where low power consumption and high accuracy are required.
- Sensor Interfaces: Used in sensor interfaces to amplify low-level signals with high precision and minimal drift.
- High-Side Voltage-to-Current Converters: Utilized in high-side V-I converters and other precision analog circuits.
Q & A
- What is the supply voltage range for the OPA333AIDCKTG4?
The OPA333AIDCKTG4 operates from a supply voltage range of 1.8 V to 5.5 V.
- What is the typical input offset voltage of the OPA333AIDCKTG4?
The typical input offset voltage is 10 μV.
- What is the input offset voltage drift of the OPA333AIDCKTG4?
The input offset voltage drift is 0.05 μV/°C.
- Is the OPA333AIDCKTG4 unity-gain stable?
Yes, the OPA333AIDCKTG4 is unity-gain stable and free from unexpected output phase reversal.
- What is the quiescent current per amplifier for the OPA333AIDCKTG4?
The quiescent current per amplifier is typically 25 μA.
- What is the operating temperature range for the OPA333AIDCKTG4?
The operating temperature range is –40°C to 125°C.
- How does the OPA333AIDCKTG4 minimize thermoelectric effects?
The device minimizes thermoelectric effects by using low thermoelectric-coefficient conditions and thermal isolation from power supplies and heat sources.
- What are some common applications of the OPA333AIDCKTG4?
Common applications include general-purpose amplification, medical devices, industrial automation, consumer electronics, sensor interfaces, and high-side V-I converters.
- What is the slew rate of the OPA333AIDCKTG4?
The slew rate is 0.16 V/μs.
- What is the output voltage swing of the OPA333AIDCKTG4?
The output voltage swing is typically 50 mV from the positive rail.
