Overview
The OPA837IDBVR is a low-power, precision operational amplifier produced by Texas Instruments. It is part of the OPAx837 family, which includes single-channel and dual-channel voltage-feedback amplifiers. The OPA837 is known for its high bandwidth and low power consumption, making it ideal for various high-performance applications. This device operates on a single 5-V supply, consuming only 600 µA per channel, and is available in a 6-pin SOT-23 package, among others.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Bandwidth (AV = 1 V/V) | 105 | MHz | ||
| Gain Bandwidth Product | 50 | MHz | ||
| Slew Rate | 105 | V/µs | ||
| Supply Current per Channel | 547 | 570 | 607 | µA |
| Input Offset Voltage | ±130 | µV | ||
| Input Offset Voltage Drift | ±0.4 | µV/°C | ||
| Common-Mode Input Range (Low) | -0.2 | 0 | V | |
| Common-Mode Input Range (High) | 3.7 | 3.8 | V | |
| Output Voltage (Low) | 0.05 | 0.1 | V | |
| Output Voltage (High) | 4.4 | 4.5 | V | |
| Operating Temperature Range | -40 | 125 | °C |
Key Features
- High Bandwidth and Low Power Consumption: The OPA837 offers a bandwidth of 105 MHz at a gain of 1 V/V, consuming only 600 µA per channel.
- Precision and Stability: It features a very low trimmed offset voltage of ±130 µV and a typical drift of ±0.4 µV/°C.
- Low Noise: The device has one of the lowest input spot noise levels at 4.7 nV/√Hz.
- Wide Temperature Range: Operates over a temperature range of –40°C to +125°C.
- Power Down Feature: Includes a power-down pin to disable the amplifier, reducing quiescent current to 10 µA.
- Compact Packaging: Available in 6-pin SOT-23 and 5-pin SC70 packages.
Applications
- SAR ADC Drivers: Ideally suited for driving successive-approximation register (SAR) analog-to-digital converters (ADCs) due to its high bandwidth and low noise.
- Reference Buffer Applications: Suitable for reference buffer applications with precision ADCs.
- High-Frequency Signal Processing: Used in applications requiring high-frequency signal processing and low dynamic output impedance.
- General-Purpose Amplification: Can be used in various general-purpose amplification tasks where high precision and low power consumption are required.
Q & A
- What is the bandwidth of the OPA837 at a gain of 1 V/V?
The bandwidth of the OPA837 at a gain of 1 V/V is 105 MHz.
- How much current does the OPA837 consume per channel?
The OPA837 consumes 600 µA per channel.
- What is the typical input offset voltage of the OPA837?
The typical input offset voltage of the OPA837 is ±130 µV.
- What is the input offset voltage drift of the OPA837?
The input offset voltage drift of the OPA837 is ±0.4 µV/°C.
- What is the common-mode input range of the OPA837?
The common-mode input range of the OPA837 is from -0.2 V to 3.8 V.
- Does the OPA837 have a power-down feature?
- What is the quiescent current in power-down mode?
The quiescent current in power-down mode is 10 µA.
- What are the typical operating temperature ranges for the OPA837?
The OPA837 operates over a temperature range of –40°C to +125°C.
- What are some common applications of the OPA837?
The OPA837 is commonly used in SAR ADC driver applications, reference buffer applications, and high-frequency signal processing.
- In what packages is the OPA837 available?
The OPA837 is available in 6-pin SOT-23 and 5-pin SC70 packages.
