Overview
The OPA835IDBVR, produced by Texas Instruments, is a single ultra-low-power, rail-to-rail output, negative-rail input, voltage-feedback operational amplifier. This device is designed to operate over a wide power supply range of 2.5 V to 5.5 V, making it suitable for a variety of applications where power efficiency is crucial. The OPA835IDBVR is particularly beneficial in battery-powered, portable systems due to its low power consumption and high-frequency performance, with a unity gain bandwidth of 56 MHz and a quiescent current of 250 µA per channel. The device also features a power-down mode that reduces the current to less than 1.5 µA, further enhancing its power-saving capabilities.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 2.5 | 5.5 | V | |
| Quiescent Operating Current per Amplifier | 200 | 250 | 350 | µA |
| Unity Gain Bandwidth | 56 | MHz | ||
| Slew Rate | 110 | V/µs | ||
| Input Noise | 9.3 | nV/√Hz | ||
| Common-Mode Rejection Ratio | 88 | 110 | dB | |
| Operating Temperature Range | –40 | 125 | °C | |
| Power-Down Quiescent Current | < 1.5 | µA |
Key Features
- Ultra-low power consumption with a quiescent current of 250 µA per channel.
- Rail-to-rail output and negative-rail input capabilities.
- High-frequency performance with a unity gain bandwidth of 56 MHz and a slew rate of 110 V/µs.
- Power-down mode to reduce current to less than 1.5 µA.
- Integrated gain-setting resistors in the OPA835IRUN package option for various gain settings.
- Extended industrial temperature range of –40°C to +125°C.
Applications
- Low-power signal conditioning.
- Audio ADC input buffer.
- Low-power SAR and ΔΣ ADC driver.
- Portable systems.
- Low-power systems.
- High-density systems.
- Ultrasonic flow meters.
Q & A
- What is the supply voltage range for the OPA835IDBVR?
The supply voltage range is from 2.5 V to 5.5 V.
- What is the typical quiescent operating current per amplifier?
The typical quiescent operating current per amplifier is 250 µA.
- What is the unity gain bandwidth of the OPA835IDBVR?
The unity gain bandwidth is 56 MHz.
- Does the OPA835IDBVR have a power-down mode?
- What are the integrated gain-setting resistors used for in the OPA835IRUN package?
The integrated gain-setting resistors allow for various gain settings such as +1, –1, –1.33, +2, +2.33, –3, +4, –4, etc.
- What is the operating temperature range of the OPA835IDBVR?
The operating temperature range is from –40°C to +125°C.
- What are some common applications of the OPA835IDBVR?
Common applications include low-power signal conditioning, audio ADC input buffer, low-power SAR and ΔΣ ADC driver, portable systems, and ultrasonic flow meters.
- How does the OPA835IDBVR perform in terms of noise?
The device has an input noise of 9.3 nV/√Hz.
- What is the common-mode rejection ratio (CMRR) of the OPA835IDBVR?
The CMRR is 88 dB to 110 dB.
- Is the OPA835IDBVR suitable for high-density systems?
