Overview
The OPA335AIDR is a single-channel, precision CMOS operational amplifier from Texas Instruments. It is part of the OPA335 series, which utilizes auto-zeroing techniques to provide very low offset voltage and near-zero drift over time and temperature. This amplifier is designed for high precision and low noise applications, making it suitable for a variety of uses including transducer applications, temperature measurement, electronic scales, medical instrumentation, and battery-powered instruments.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | 1 | - | 5 | µV |
| Offset Voltage Drift (dVOS/dT) | ±0.02 | - | ±0.05 | µV/°C |
| Input Bias Current (IB) | ±70 | - | ±200 | pA |
| Quiescent Current (IQ) | 285 | - | 350 | µA |
| Operating Voltage Range | 2.7 | - | 5.5 | V |
| Operating Temperature Range | -40 | - | 125 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
| Thermal Resistance (θJA) | - | - | 150 | °C/W |
Key Features
- Low offset voltage: 5µV max
- Zero drift: 0.05µV/°C max
- Single-supply operation: 2.7V to 5.5V
- Low quiescent current: 285µA
- Shutdown feature with high-impedance output state
- Unity-gain stable with no phase reversal
- MicroSIZE packages: SOT23-5, SO-8, MSOP-8
Applications
- Transducer applications
- Temperature measurement
- Electronic scales
- Medical instrumentation
- Battery-powered instruments
- Handheld test equipment
Q & A
- What is the maximum input offset voltage of the OPA335AIDR?
The maximum input offset voltage is 5µV. - What is the typical quiescent current of the OPA335AIDR?
The typical quiescent current is 285µA. - What is the operating temperature range of the OPA335AIDR?
The operating temperature range is from -40°C to +125°C. - Does the OPA335AIDR have a shutdown feature?
Yes, it has a shutdown feature that puts the output in a high-impedance state. - What is the input bias current of the OPA335AIDR?
The input bias current is typically ±70pA. - What are the package options for the OPA335AIDR?
The package options include SOT23-5, SO-8, and MSOP-8. - Is the OPA335AIDR suitable for battery-powered applications?
Yes, it is suitable due to its low quiescent current and shutdown feature. - What is the maximum storage temperature for the OPA335AIDR?
The maximum storage temperature is +150°C. - How does the auto-zeroing technique benefit the OPA335AIDR?
The auto-zeroing technique provides very low offset voltage and near-zero drift over time and temperature. - What is the thermal resistance (θJA) of the OPA335AIDR in an SO-8 package?
The thermal resistance (θJA) is 150°C/W.
