Overview
The OPA388IDBVR from Texas Instruments is a single, 10-MHz, CMOS, zero-drift, zero-crossover, true rail-to-rail input/output (RRIO) precision operational amplifier. This device is designed to offer ultra-low offset voltage and drift, making it ideal for high-precision applications. The OPA388 is available in several package options, including the DBV (SOT-23) package, which is compact and suitable for space-constrained designs.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Input Offset Voltage (VOS) | ±0.25 | µV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.005 | µV/°C |
| Power-Supply Rejection Ratio (PSRR) | 124 dB | |
| Common-Mode Rejection Ratio (CMRR) | 140 dB | |
| Input Voltage Noise Density | 7 nV/√Hz at 1 kHz | |
| Unity-Gain Bandwidth (GBW) | 10 MHz | |
| Slew Rate | 5 V/µs | |
| Quiescent Current per Amplifier | 1.7 mA (VS = 2.5 V), 1.9 mA (VS = 5.5 V) | |
| Output Voltage Swing | Positive rail: 5 mV (no load), 20 mV (RLOAD = 10 kΩ); Negative rail: 10 mV (no load), 25 mV (RLOAD = 10 kΩ) |
Key Features
- Ultra-low offset voltage: ±0.25 µV, ensuring high precision in measurements.
- Zero drift: ±0.005 µV/°C, maintaining stability over temperature variations.
- Zero crossover: True RRIO with 140-dB CMRR, providing excellent common-mode rejection.
- Low noise: 7.0 nV/√Hz at 1 kHz, suitable for noise-sensitive applications.
- High bandwidth: 10-MHz unity-gain bandwidth and 5 V/µs slew rate for fast signal processing.
- Compact packaging: Available in DBV (SOT-23) package, ideal for space-constrained designs.
Applications
- Precision instrumentation: Suitable for high-precision measurement instruments due to its ultra-low offset voltage and drift.
- Medical devices: Ideal for medical equipment requiring high accuracy and stability.
- Aerospace and defense: Used in applications where high precision and reliability are critical.
- Industrial automation: Applicable in control systems and sensors requiring precise signal processing.
- Test and measurement equipment: Used in oscilloscopes, multimeters, and other test equipment for accurate measurements.
Q & A
- What is the typical input offset voltage of the OPA388?
The typical input offset voltage of the OPA388 is ±0.25 µV.
- What is the input offset voltage drift of the OPA388?
The input offset voltage drift of the OPA388 is ±0.005 µV/°C.
- What is the common-mode rejection ratio (CMRR) of the OPA388?
The CMRR of the OPA388 is 140 dB.
- What is the unity-gain bandwidth of the OPA388?
The unity-gain bandwidth of the OPA388 is 10 MHz.
- What is the slew rate of the OPA388?
The slew rate of the OPA388 is 5 V/µs.
- What are the typical quiescent current values for the OPA388?
The typical quiescent current values for the OPA388 are 1.7 mA (VS = 2.5 V) and 1.9 mA (VS = 5.5 V).
- What is the output voltage swing of the OPA388?
The output voltage swing of the OPA388 is from 5 mV to 25 mV depending on the load and supply voltage.
- In what package options is the OPA388 available?
The OPA388 is available in DBV (SOT-23), D (SOIC), and DGK (VSSOP) packages.
- What are some typical applications of the OPA388?
The OPA388 is typically used in precision instrumentation, medical devices, aerospace and defense, industrial automation, and test and measurement equipment).
- What is the noise performance of the OPA388?
The OPA388 has a low noise performance with an input voltage noise density of 7.0 nV/√Hz at 1 kHz).
