Overview
The OPA189IDBVR, produced by Texas Instruments, is a high-precision operational amplifier that stands out for its ultra-low noise, zero-drift, and fast-settling characteristics. This device is part of the OPAx189 family, which includes the OPA189, OPA2189, and OPA4189. The OPA189IDBVR is specifically designed for applications requiring high precision and low noise, making it an excellent choice for precision instrumentation, signal measurement, and active filtering.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single-Supply) | 4.5 | 36 | V | |
| Supply Voltage (Dual-Supply) | ±2.25 | ±18 | V | |
| Operating Temperature | –40 | 125 | °C | |
| Input Offset Voltage | 3 | μV | ||
| Input Offset Voltage Drift | 0.005 | μV/°C | ||
| Common-Mode Rejection Ratio (CMRR) | 168 | dB | ||
| Open-Loop Gain | 170 | dB | ||
| Gain Bandwidth | 14 | MHz | ||
| Slew Rate | 20 | V/μs | ||
| Input Voltage Noise (0.1 Hz to 10 Hz) | 0.1 | μVPP | ||
| Input Voltage Noise Density at 1 kHz | 5.2 | nV/√Hz | ||
| Quiescent Current | 1.7 | mA |
Key Features
- Ultra-high precision: Zero-drift of 0.005 μV/°C and ultra-low offset voltage of 3 μV maximum.
- Excellent DC precision: CMRR of 168 dB and open-loop gain of 170 dB.
- Low noise: Input voltage noise density of 5.2 nV/√Hz at 1 kHz and 0.1-μVPP noise from 0.1 Hz to 10 Hz.
- Excellent dynamic performance: Gain bandwidth of 14 MHz, slew rate of 20 V/μs, and fast settling time of 0.01% in 1.1 μs for a 10-V step.
- Robust design: MUX-friendly inputs, RFI/EMI filtered inputs, and robust ESD protection.
- Wide supply range: Operates from 4.5 V to 36 V.
- Rail-to-rail output: Output operation includes the negative rail.
Applications
- Battery test and measurement: Ideal for precise voltage measurements.
- Analog input modules: Enhances the precision of analog input systems.
- Weigh scales: Provides accurate signal amplification for weight measurements.
- DC power supplies, AC sources, and electronic loads: Ensures high precision in power supply and load applications.
- Multifunction relays: Supports precise signal handling in relay systems.
Q & A
- What is the input offset voltage of the OPA189IDBVR?
The input offset voltage is 3 μV maximum. - What is the input offset voltage drift of the OPA189IDBVR?
The input offset voltage drift is 0.005 μV/°C. - What is the common-mode rejection ratio (CMRR) of the OPA189IDBVR?
The CMRR is 168 dB. - What is the gain bandwidth of the OPA189IDBVR?
The gain bandwidth is 14 MHz. - What is the slew rate of the OPA189IDBVR?
The slew rate is 20 V/μs. - What is the quiescent current of the OPA189IDBVR?
The quiescent current is 1.7 mA maximum. - What is the operating temperature range of the OPA189IDBVR?
The operating temperature range is from –40°C to 125°C. - What are the typical noise characteristics of the OPA189IDBVR?
The input voltage noise density is 5.2 nV/√Hz at 1 kHz, and the noise from 0.1 Hz to 10 Hz is 0.1 μVPP. - Is the OPA189IDBVR suitable for high-frequency applications?
Yes, it has a gain bandwidth of 14 MHz and a fast settling time, making it suitable for high-frequency applications. - What kind of protection does the OPA189IDBVR offer against ESD?
The OPA189IDBVR provides robust ESD protection during shipment, handling, and assembly.
