Overview
The OPA2990SIDGSR is a high-performance operational amplifier from Texas Instruments, part of the OPAx990 family that includes the OPA990, OPA2990, and OPA4990. These devices are designed for high-voltage industrial applications, offering excellent DC precision and AC performance. The OPA2990 is characterized by its rail-to-rail input and output, low offset voltage (±300 µV), and low offset drift (±0.6 µV/°C). It is available in various package types, including micro-size packages like X2QFN, WSON, and SOT-553, as well as standard packages such as SOT-23, SOIC, and TSSOP, and is specified to operate from –40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Offset Voltage | ±300 µV (typ) |
| Offset Voltage Drift | ±0.6 µV/°C (typ) |
| Noise | 30 nV/√Hz at 1 kHz |
| Common-Mode Rejection | 115 dB |
| Bias Current | ±10 pA |
| Bandwidth (GBW) | 1.1 MHz |
| Slew Rate | 4.5 V/µs |
| Quiescent Current | 120 µA per amplifier |
| Supply Voltage Range | ±1.35 V to ±20 V, 2.7 V to 40 V |
| EMIRR Performance | 78 dB at 1.8 GHz |
| Operating Temperature Range | –40°C to 125°C |
| Package Types | X2QFN, WSON, SOT-553, SOT-23, SOIC, TSSOP |
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: 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
- 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
- Differential and common-mode input voltage range to supply rail
- Shutdown feature
- High short-circuit current: ±80 mA
Applications
The OPA2990 is designed for high-voltage industrial applications, including but not limited to:
- Industrial automation and control systems
- High-voltage measurement and sensing
- Power supply monitoring and control
- Audio and signal processing in high-voltage environments
- Comparator and open-loop amplifier applications
Q & A
- What is the typical offset voltage of the OPA2990?
The typical offset voltage of the OPA2990 is ±300 µV.
- What is the slew rate of the OPA2990?
The slew rate of the OPA2990 is 4.5 V/µs.
- What is the operating temperature range of the OPA2990?
The operating temperature range of the OPA2990 is –40°C to 125°C.
- What are the available package types for the OPA2990?
The OPA2990 is available in various package types including X2QFN, WSON, SOT-553, SOT-23, SOIC, and TSSOP.
- Can the OPA2990 be used as a comparator?
- What is the common-mode rejection ratio (CMRR) of the OPA2990?
The CMRR of the OPA2990 is 115 dB.
- What is the quiescent current per amplifier for the OPA2990?
The quiescent current per amplifier for the OPA2990 is 120 µA.
- What is the supply voltage range for the OPA2990?
The supply voltage range for the OPA2990 is ±1.35 V to ±20 V, 2.7 V to 40 V.
- Does the OPA2990 have a shutdown feature?
- What is the EMIRR performance of the OPA2990 at 1.8 GHz?
The EMIRR performance of the OPA2990 at 1.8 GHz is 78 dB.
