Overview
The OPA2990IDDFR is a dual, 40-V, low-power operational amplifier produced by Texas Instruments. It is part of the OPAx990 family, which includes the OPA990, OPA2990, and OPA4990. These devices are designed for high-voltage industrial applications and offer excellent DC precision and AC performance. The OPA2990IDDFR is available in a SOT-23-THN (DDF) package with 8 pins and operates over a wide temperature range from –40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23-THN (DDF) |
| Pins | 8 |
| Operating Temperature Range (°C) | –40 to 125 |
| Offset Voltage | ±300 µV (typ) |
| Offset Voltage Drift | ±0.6 µV/°C (typ) |
| Noise | 30 nV/√Hz at 1 kHz |
| Common-Mode Rejection Ratio (CMRR) | 115 dB |
| Bias Current | ±10 pA |
| Bandwidth (GBW) | 1.1 MHz |
| Slew Rate | 4.5 V/µs |
| Quiescent Current per Amplifier | 120 µA |
| Supply Voltage Range | ±1.35 V to ±20 V, 2.7 V to 40 V |
| EMIRR at 1.8 GHz | 78 dB |
Key Features
- Low offset voltage: ±300 µV
- Low offset voltage drift: ±0.6 µV/°C
- Low noise: 30 nV/√Hz at 1 kHz
- High common-mode rejection ratio: 115 dB
- Low bias current: ±10 pA
- Rail-to-rail input and output
- MUX-friendly/comparator inputs
- Amplifier operates with differential inputs up to supply rail
- Amplifier can be used in open-loop or as comparator
- Wide bandwidth: 1.1-MHz GBW
- High slew rate: 4.5 V/µs
- Low quiescent current: 120 µA per amplifier
- Wide supply voltage range: ±1.35 V to ±20 V, 2.7 V to 40 V
- Robust EMIRR performance: 78 dB at 1.8 GHz
Applications
- Multiplexed data-acquisition systems
- Test and measurement equipment
- Motor drive: power stage and control modules
- Power delivery: UPS, server, and merchant network power
- ADC driver and reference buffer amplifier
- Programmable logic controllers
- Analog input and output modules
- High-side and low-side current sensing
- High precision comparator
Q & A
- What is the operating temperature range of the OPA2990IDDFR?
The operating temperature range is from –40°C to 125°C.
- What is the typical offset voltage of the OPA2990IDDFR?
The typical offset voltage is ±300 µV.
- What is the common-mode rejection ratio (CMRR) of the OPA2990IDDFR?
The CMRR is 115 dB.
- What is the bandwidth (GBW) of the OPA2990IDDFR?
The bandwidth is 1.1 MHz.
- What is the slew rate of the OPA2990IDDFR?
The slew rate is 4.5 V/µs.
- What is the quiescent current per amplifier for the OPA2990IDDFR?
The quiescent current per amplifier is 120 µA.
- What is the supply voltage range for the OPA2990IDDFR?
The supply voltage range is ±1.35 V to ±20 V, 2.7 V to 40 V.
- What are some common applications of the OPA2990IDDFR?
Common applications include multiplexed data-acquisition systems, test and measurement equipment, motor drive, power delivery, ADC drivers, and high precision comparators.
- Can the OPA2990IDDFR be used as a comparator?
- What is the EMIRR performance of the OPA2990IDDFR at 1.8 GHz?
The EMIRR performance is 78 dB at 1.8 GHz.
