Overview
The OPA735AIDR is a high-precision, single-supply CMOS operational amplifier from Texas Instruments. It is part of the OPA734 and OPA735 series, which utilize auto-zeroing techniques to provide low offset voltage and near-zero drift over time and temperature. These amplifiers are designed for low-voltage, single-supply operation and offer high input impedance and rail-to-rail output swing within 50mV of the rails. They are available in various packages, including MicroSIZE SOT23-5 and SO-8, and are optimized for applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | - | - | 5 | µV |
| Offset Voltage Drift (dVOS/dT) | - | 0.01 | 0.05 | µV/°C |
| Quiescent Current | - | - | 750 | µA |
| Input Bias Current (IB) | - | - | 200 | pA |
| Supply Voltage Range | 2.7 | - | 12 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | SO-8 | - |
Key Features
- Low Offset Voltage: 5µV (max)
- Zero Drift: 0.05µV/°C (max)
- Single-Supply Operation: Compatible with supply voltages from 2.7V to 12V
- Low Bias Current: 200pA (max)
- Shutdown Mode: Available in some versions, allowing the amplifier to be switched to a standby current of 9µA (max) and the output to be placed in a high-impedance state
- MicroSIZE Packages: Available in SOT23-5 and SO-8 packages
- High Input Impedance and Rail-to-Rail Output Swing: Within 50mV of the rails
Applications
- Transducer Applications: Suitable for precision transducer signal conditioning
- Temperature Measurements: Ideal for temperature sensing and measurement circuits
- Electronic Scales: Used in precision weighing and measurement applications
- Medical Instrumentation: Suitable for medical devices requiring high precision and low noise
- Battery-Powered Instruments: Optimized for low power consumption, extending battery life
- Handheld Test Equipment: Used in portable test and measurement devices
Q & A
- What is the maximum input offset voltage of the OPA735AIDR?
The maximum input offset voltage is 5µV.
- What is the temperature drift of the OPA735AIDR?
The temperature drift is 0.05µV/°C (max).
- What is the quiescent current of the OPA735AIDR?
The quiescent current is 750µA (max).
- What is the input bias current of the OPA735AIDR?
The input bias current is 200pA (max).
- What is the supply voltage range for the OPA735AIDR?
The supply voltage range is from 2.7V to 12V.
- Does the OPA735AIDR have a shutdown mode?
Yes, some versions of the OPA735AIDR include a shutdown mode.
- What are the available package types for the OPA735AIDR?
The OPA735AIDR is available in MicroSIZE SOT23-5 and SO-8 packages.
- What is the operating temperature range for the OPA735AIDR?
The operating temperature range is from -40°C to +85°C.
- What are some common applications for the OPA735AIDR?
Common applications include transducer applications, temperature measurements, electronic scales, medical instrumentation, battery-powered instruments, and handheld test equipment.
- How does the auto-zeroing technique benefit the OPA735AIDR?
The auto-zeroing technique provides low offset voltage and near-zero drift over time and temperature, enhancing the amplifier's precision and stability.
