Overview
The OPA2835IRMCR, produced by Texas Instruments, is a dual ultra-low-power, rail-to-rail output, negative-rail input, voltage-feedback operational amplifier. Designed to operate over a power supply range of 2.5 V to 5.5 V with a single supply, or ±1.25 V to ±2.75 V with a dual supply, this device is ideal for battery-powered and portable applications where power efficiency is crucial. The OPA2835 consumes only 250 µA per channel and offers a unity gain bandwidth of 56 MHz, setting an industry-leading performance-to-power ratio for rail-to-rail amplifiers.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 2.5 | 5.5 | V | |
| Quiescent Operating Current per Amplifier | 175 | 250 | 300 | µA |
| Power Down Quiescent Current | 0.5 | µA | ||
| Operating Temperature Range | –40 | 125 | °C | |
| Input Voltage Range (5-V Supply) | –0.2 | 3.9 | V | |
| Unity Gain Bandwidth | 56 | MHz | ||
| Open-Loop Voltage Gain (AOL) | 100 | 120 | dB | |
| Common-Mode Rejection Ratio | 88 | 110 | dB | |
| Output Current Drive | ±20 | ±30 | ±40 | mA |
Key Features
- Ultra-low power consumption with a quiescent current of 250 µA per channel.
- Rail-to-rail output and negative-rail input capability.
- Unity gain bandwidth of 56 MHz.
- Power down mode reducing current to less than 1.5 µA.
- Integrated gain-setting resistors in the OPA835IRUN package for various gain settings.
- Operating temperature range of –40°C to +125°C.
- High-density packaging options including SOIC, VSSOP, QFN, and UQFN.
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 typical quiescent current of the OPA2835?
The typical quiescent current of the OPA2835 is 250 µA per channel.
- What is the operating temperature range of the OPA2835?
The operating temperature range of the OPA2835 is –40°C to +125°C.
- What is the unity gain bandwidth of the OPA2835?
The unity gain bandwidth of the OPA2835 is 56 MHz.
- Does the OPA2835 have a power down mode?
- What types of packages are available for the OPA2835?
The OPA2835 is available in SOIC, VSSOP, QFN, and UQFN packages.
- What is the input voltage range for the OPA2835 on a 5-V supply?
The input voltage range for the OPA2835 on a 5-V supply is –0.2 V to 3.9 V.
- What is the common-mode rejection ratio of the OPA2835?
The common-mode rejection ratio of the OPA2835 is 88 dB to 110 dB.
- Can the OPA2835 be used in high-density systems?
- What are some typical applications of the OPA2835?
The OPA2835 is typically used in low-power signal conditioning, audio ADC input buffers, low-power SAR and ΔΣ ADC drivers, portable systems, and ultrasonic flow meters.
- Does the OPA835IRUN package have integrated gain-setting resistors?
