Overview
The OPA820IDBVRG4, produced by Texas Instruments, is a high-performance, unity-gain stable, voltage-feedback operational amplifier. This device is designed for high-speed, high-precision, and wide-dynamic-range applications. It features a very-low input-noise voltage and high-output current, making it suitable for a variety of analog signal processing tasks. The OPA820 operates on a flexible supply voltage range, from dual ±2.5 V to ±6 V and single 5 V to 12 V, and consumes a low supply current of 5.6 mA. This amplifier is known for its excellent DC accuracy and high bandwidth, making it a versatile component for various electronic systems.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Bandwidth (G = 2) | 230 | MHz |
| Input Noise Voltage | 2.5 | nV/√Hz |
| Output Current | ±110 | mA |
| Supply Current | 5.6 | mA |
| Input Offset Voltage (25°C) | ±750 | µV |
| Input Offset Current (25°C) | ±400 | nA |
| Common-Mode Rejection Ratio (CMRR) | 74-83 | dB |
| Power-Supply Rejection Ratio (PSRR) | 64-72 | dB |
| Slew Rate (G = 2, 2-V step) | 240 | V/µs |
| Rise and Fall Time (G = 2, 0.2-V step) | 1.5 | ns |
Key Features
- High bandwidth of up to 230 MHz at a gain of 2
- Low input noise voltage of 2.5 nV/√Hz
- High output current of ±110 mA
- Low supply current of 5.6 mA
- Flexible supply voltage: dual ±2.5 V to ±6 V and single 5 V to 12 V
- Excellent DC accuracy with a maximum input offset voltage of ±750 µV and input offset current of ±400 nA
- Minimal input and output voltage-swing headroom, supporting more than 2-VPP output swing on a single 5-V supply
- Low thermal impedance in SOT package
- Full specification over both commercial and industrial temperature ranges
Applications
- Low-cost video line drivers
- ADC preamplifiers
- Active filters
- Low-noise integrators
- Portable test equipment
- Optical channel amplifiers
- Low-power, baseband amplifiers
- CCD imaging channel amplifiers
- Upgrades for OPA650 and OPA620
Q & A
- What is the typical bandwidth of the OPA820 at a gain of 2?
The typical bandwidth of the OPA820 at a gain of 2 is 230 MHz.
- What is the input noise voltage of the OPA820?
The input noise voltage of the OPA820 is 2.5 nV/√Hz.
- What is the maximum output current of the OPA820?
The maximum output current of the OPA820 is ±110 mA.
- What is the supply current of the OPA820?
The supply current of the OPA820 is 5.6 mA.
- What are the supported supply voltage ranges for the OPA820?
The OPA820 supports supply voltage ranges from dual ±2.5 V to ±6 V and single 5 V to 12 V.
- What is the maximum input offset voltage of the OPA820 at 25°C?
The maximum input offset voltage of the OPA820 at 25°C is ±750 µV.
- What is the common-mode rejection ratio (CMRR) of the OPA820?
The CMRR of the OPA820 is between 74 dB and 83 dB.
- What is the slew rate of the OPA820 at a gain of 2 and a 2-V step?
The slew rate of the OPA820 at a gain of 2 and a 2-V step is 240 V/µs.
- What are some typical applications of the OPA820?
Typical applications include low-cost video line drivers, ADC preamplifiers, active filters, low-noise integrators, and more.
- What are the available package options for the OPA820?
The OPA820 is available in 8-pin SOIC and 5-pin SOT-23 packages.
