Overview
The OPA2191IDGKR is a low-power, 36-V, CMOS precision e-trim™ operational amplifier produced by Texas Instruments. This device is part of the OPAx191 family, which includes the OPA191, OPA2191, and OPA4191. These operational amplifiers are known for their outstanding DC precision and AC performance, making them suitable for high-voltage industrial applications. The OPA2191IDGKR is available in a VSSOP (DGK) package with 8 pins and operates over a temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | VSSOP (DGK) with 8 pins |
| Operating Temperature Range | -40°C to 125°C |
| Offset Voltage | ±5 µV (typ) |
| Offset Voltage Drift | ±0.1 µV/°C (typ) |
| Noise | 15 nV/√ Hz at 1 kHz |
| Common-Mode Rejection Ratio | 140 dB |
| Bias Current | ±5 pA |
| Bandwidth | 2.5 MHz GBW |
| Slew Rate | 5 V/µs |
| Quiescent Current | 140 µA per amplifier |
| Supply Voltage Range | ±2.25 V to ±18 V, 4.5 V to 36 V |
| Capacitive Load Drive Capability | Up to 1 nF |
Key Features
- Low offset voltage: ±5 µV
- Low offset voltage drift: ±0.1 µV/°C
- Low noise: 15 nV/√ Hz at 1 kHz
- High common-mode rejection: 140 dB
- Low bias current: ±5 pA
- Rail-to-rail input and output
- Wide bandwidth: 2.5-MHz GBW
- High slew rate: 5 V/µs
- Low quiescent current: 140 µA per amplifier
- Wide supply voltage range: ±2.25 V to ±18 V, 4.5 V to 36 V
- EMI/RFI filtered inputs
- Differential input voltage range to supply rail
- High capacitive load drive capability: up to 1 nF
Applications
The OPA2191IDGKR is designed for high-voltage industrial applications, including but not limited to:
- Industrial control systems
- Sensor interfaces
- Medical devices
- Aerospace and defense systems
- Automotive systems
Q & A
- What is the operating temperature range of the OPA2191IDGKR?
The operating temperature range is -40°C to 125°C.
- What is the typical offset voltage of the OPA2191IDGKR?
The typical offset voltage is ±5 µV.
- What is the common-mode rejection ratio of the OPA2191IDGKR?
The common-mode rejection ratio is 140 dB.
- What is the slew rate of the OPA2191IDGKR?
The slew rate is 5 V/µs.
- What is the quiescent current per amplifier for the OPA2191IDGKR?
The quiescent current per amplifier is 140 µA.
- What is the supply voltage range for the OPA2191IDGKR?
The supply voltage range is ±2.25 V to ±18 V, 4.5 V to 36 V.
- Does the OPA2191IDGKR have EMI/RFI filtered inputs?
- What is the capacitive load drive capability of the OPA2191IDGKR?
- In what packages is the OPA2191 available?
- What are some typical applications for the OPA2191IDGKR?
