Overview
The OPA2626IDGKR is a high-bandwidth, high-precision operational amplifier designed by Texas Instruments. It is specifically optimized for driving high-throughput, high-resolution successive-approximation register (SAR) analog-to-digital converters (ADCs). This device is known for its low total harmonic distortion (THD) and noise, making it ideal for applications requiring high fidelity and precision.
Key Specifications
| Parameter | Value |
|---|---|
| Gain Bandwidth (G = 100) | 120 MHz |
| Slew Rate | 115 V/µs |
| Settling Time (16-bit, 4-V step) | 280 ns |
| Offset Voltage | ±100 µV (maximum) |
| Offset Voltage Drift | ±3 µV/ºC (maximum) |
| Quiescent Current | 2 mA (typical) |
| Input Common-Mode Range | Includes negative rail |
| Output Impedance | 1 Ω at 1 MHz |
| Operating Temperature Range | -40°C to +125°C |
| Package Type | VSSOP-8 |
| Total Supply Voltage | 2.7V to 5.5V |
Key Features
- High Precision and Low Distortion: The OPA2626IDGKR offers low total harmonic distortion (THD) of –122 dBc for HD2 and –140 dBc for HD3 at 100 kHz, making it suitable for high-fidelity applications.
- High Gain Bandwidth and Slew Rate: With a gain bandwidth of 120 MHz and a slew rate of 115 V/µs, this amplifier is ideal for high-speed applications.
- Fast Settling Time: It has a settling time of 280 ns for a 16-bit, 4-V step, which is crucial for high-throughput data acquisition systems.
- Low Noise and Offset Voltage: The device features low voltage noise of 2.5 nV/√Hz at 10 kHz and an offset voltage of ±100 µV, ensuring high DC precision.
- Rail-to-Rail Output: The output stage is capable of swinging from the negative supply rail to the positive supply rail, enhancing the dynamic range of the amplifier.
- Wide Operating Temperature Range: Fully specified from –40°C to +125°C, making it suitable for a variety of environmental conditions.
Applications
- Precision SAR ADC Drivers: Optimized for driving high-resolution SAR ADCs such as the ADS88xx family.
- Precision Voltage Reference Buffers: Used in applications requiring high precision and stability.
- Programmable Logic Controllers: Suitable for industrial control systems where precision and reliability are critical.
- Test and Measurement Equipment: Ideal for high-precision measurement instruments.
- Scientific Instrumentation: Used in various scientific instruments that require high accuracy and low noise.
- High Throughput Data Acquisition Systems: Suitable for systems that require fast and precise data acquisition.
Q & A
- What is the primary application of the OPA2626IDGKR?
The primary application of the OPA2626IDGKR is as a driver for high-throughput, high-resolution successive-approximation register (SAR) analog-to-digital converters (ADCs).
- What are the key specifications of the OPA2626IDGKR?
The key specifications include a gain bandwidth of 120 MHz, a slew rate of 115 V/µs, a settling time of 280 ns for a 16-bit, 4-V step, and an offset voltage of ±100 µV.
- What is the operating temperature range of the OPA2626IDGKR?
The operating temperature range is from –40°C to +125°C.
- What type of package is the OPA2626IDGKR available in?
The OPA2626IDGKR is available in an 8-pin VSSOP package.
- What are some of the applications where the OPA2626IDGKR is used?
Applications include precision SAR ADC drivers, precision voltage reference buffers, programmable logic controllers, test and measurement equipment, scientific instrumentation, and high throughput data acquisition systems.
- What is the typical quiescent current of the OPA2626IDGKR?
The typical quiescent current is 2 mA.
- Does the OPA2626IDGKR have rail-to-rail output capability?
Yes, the OPA2626IDGKR has rail-to-rail output capability.
- What is the input common-mode range of the OPA2626IDGKR?
The input common-mode range includes the negative rail.
- What is the total supply voltage range for the OPA2626IDGKR?
The total supply voltage range is from 2.7V to 5.5V.
- Is the OPA2626IDGKR suitable for high-fidelity applications?
Yes, the OPA2626IDGKR is suitable for high-fidelity applications due to its low total harmonic distortion and noise.
