Overview
The OPA810, produced by Texas Instruments, is a single-channel, field-effect transistor (FET) input, voltage-feedback operational amplifier. It is known for its high performance and versatility, making it suitable for a wide range of high-fidelity data-acquisition and signal-processing applications. The OPA810 features a small-signal, unity-gain bandwidth of 140MHz, a gain-bandwidth product of 70MHz, and a slew rate of 200V/µs. It operates over a wide supply range from 4.75V to 27V and is specified over the extended industrial temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Gain-Bandwidth Product (GBWP) | 70 | MHz |
| Small-Signal Bandwidth | 140 | MHz |
| Slew Rate | 200 | V/µs |
| Supply Voltage Range | 4.75V to 27V | V |
| Input Voltage Noise | 6.3nV/√Hz (f = 500kHz) | nV/√Hz |
| Input Current Noise | 5fA/√Hz (f = 10kHz) | fA/√Hz |
| Input Bias Current | 2pA | pA |
| Output Current | 75mA | mA |
| Input Offset Voltage | ±500µV | µV |
| Offset Voltage Drift | ±2.5µV/°C | µV/°C |
| Quiescent Current per Channel | 3.7mA | mA |
| Operating Temperature Range | –40°C to +125°C | °C |
Key Features
- Rail-to-rail input and output stages, ensuring full signal swing over the entire supply voltage range.
- Low noise performance with an input voltage noise of 6.3nV/√Hz at 500kHz and an input current noise of 5fA/√Hz at 10kHz.
- High linear output current capability of 75mA, suitable for driving heavy loads such as optoelectronic components and analog-to-digital converter (ADC) inputs.
- Low power consumption with a quiescent current of 3.7mA per channel.
- Extended temperature range of –40°C to +125°C, making it suitable for industrial and harsh environment applications.
- Fabricated on Texas Instruments' proprietary high-speed SiGe BiCMOS process, offering significant performance improvements over comparable FET-input amplifiers.
Applications
- Wideband photodiode transimpedance amplifiers.
- Analog input and output modules.
- Impedance measurement.
- Power analyzers.
- High-Z voltage and current measurement.
- Data acquisition systems.
- Multichannel sensor interfaces.
- Optoelectronic drivers.
Q & A
- What is the small-signal, unity-gain bandwidth of the OPA810?
The OPA810 has a small-signal, unity-gain bandwidth of 140MHz.
- What is the gain-bandwidth product (GBWP) of the OPA810?
The gain-bandwidth product (GBWP) of the OPA810 is 70MHz.
- What is the slew rate of the OPA810?
The slew rate of the OPA810 is 200V/µs.
- What is the input voltage noise of the OPA810 at 500kHz?
The input voltage noise of the OPA810 at 500kHz is 6.3nV/√Hz.
- What is the typical input bias current of the OPA810?
The typical input bias current of the OPA810 is 2pA.
- What is the maximum output current of the OPA810?
The OPA810 can deliver up to 75mA of linear output current.
- What is the operating temperature range of the OPA810?
The OPA810 operates over a temperature range of –40°C to +125°C.
- What are some common applications of the OPA810?
The OPA810 is commonly used in wideband photodiode transimpedance amplifiers, analog input and output modules, impedance measurement, power analyzers, high-Z voltage and current measurement, data acquisition systems, multichannel sensor interfaces, and optoelectronic drivers.
- Is the OPA810 available in a dual-channel version?
- What is the quiescent current per channel of the OPA810?
The quiescent current per channel of the OPA810 is 3.7mA.
