Overview
The ADA4622-1ARZ, produced by Analog Devices Inc., is part of the next generation of single-supply, rail-to-rail output (RRO), precision junction field effect transistors (JFET) input operational amplifiers. This series, which includes the ADA4622-1, ADA4622-2, and ADA4622-4, offers significant improvements over their predecessors, such as the AD820, AD822, and AD824. These improvements include enhanced speed, reduced noise, and improved DC precision, making them ideal upgrades without compromising flexibility and ease of use.
The ADA4622-1ARZ operates over an extended industrial temperature range of −40°C to +125°C and can be powered from 5 V to 30 V, with specifications provided for +5 V, ±5 V, and ±15 V supply voltages. This op-amp is available in various packages, including the 8-lead SOIC_N and 8-lead MSOP packages for the ADA4622-1 model.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | A Grade, TA = 25°C | ±0.8 mV | mV | ||
| Input Offset Voltage Drift | A Grade, −40°C < TA < +125°C | ±2 µV/°C | ±15 µV/°C | µV/°C | ||
| Input Bias Current | IB | TA = 25°C | ±10 pA | pA | ||
| Common-Mode Rejection Ratio (CMRR) | CMRR | VCM = 0 V to 2 V, −40°C < TA < +125°C | 67 dB | 87 dB | dB | |
| Open-Loop Voltage Gain | AVO | RL = 10 kΩ to V−, VOUT = 0.2 V to 4.6 V, −40°C < TA < +125°C | 99 dB | 115 dB | dB | |
| Slew Rate | Low to High, High to Low | 23 V/µs, −18 V/µs | V/µs | |||
| Unity Gain Bandwidth | 8 MHz | MHz | ||||
| Operating Temperature | −40°C | +125°C | °C | |||
| Supply Voltage | 5 V | 30 V | V |
Key Features
- Next Generation Op-Amp: Upgrades from the AD820, AD822, and AD824 series with improved performance.
- Wide Gain Bandwidth Product: 8 MHz typical, enhancing the op-amp's ability to handle high-frequency signals.
- High Slew Rate: 23 V/µs (low to high) and −18 V/µs (high to low), ensuring fast response times.
- Low Input Bias Current: ±10 pA maximum at TA = 25°C, reducing errors due to input current.
- Low Offset Voltage: A grade: ±0.8 mV maximum, B grade: ±0.35 mV maximum at TA = 25°C.
- Low Offset Voltage Drift: A grade: ±2 µV/°C typical, B grade: ±2 µV/°C typical.
- Rail-to-Rail Output: Output swings from the negative supply to the positive supply, maximizing dynamic range.
- Improved Noise Performance: Reduced broadband noise by 25% and 1/f noise by half compared to predecessors.
- Enhanced Common-Mode Rejection Ratio (CMRR): Improved CMRR makes the op-amp more suitable for noninverting gain and difference amplifier configurations.
- EMI Rejection: Input EMI filters increase signal robustness against closely located switching noise sources.
Applications
- Industrial Automation: Suitable for use in industrial control systems due to its extended temperature range and robust noise performance.
- Medical Devices: Ideal for medical equipment requiring high precision and low noise, such as ECG and EEG systems.
- Aerospace and Defense: Meets the stringent requirements of aerospace and defense applications with its high reliability and performance over a wide temperature range.
- Test and Measurement Equipment: Used in various test and measurement instruments where high accuracy and low noise are critical.
- Automotive Systems: Compatible with automotive environments due to its automotive-grade temperature specifications.
Q & A
- What is the operating temperature range of the ADA4622-1ARZ?
The ADA4622-1ARZ operates over an extended industrial temperature range of −40°C to +125°C.
- What are the supply voltage options for the ADA4622-1ARZ?
The ADA4622-1ARZ can operate from 5 V to 30 V, with specifications provided for +5 V, ±5 V, and ±15 V supply voltages.
- What is the typical unity gain bandwidth of the ADA4622-1ARZ?
The typical unity gain bandwidth is 8 MHz.
- How does the ADA4622-1ARZ improve upon its predecessors in terms of noise performance?
The ADA4622-1ARZ reduces broadband noise by 25% and 1/f noise by half compared to its predecessors.
- What is the maximum input bias current of the ADA4622-1ARZ?
The maximum input bias current is ±10 pA at TA = 25°C.
- What are the common package options for the ADA4622-1ARZ?
The ADA4622-1ARZ is available in 8-lead SOIC_N and 8-lead MSOP packages.
- How does the ADA4622-1ARZ handle electromagnetic interference (EMI)?
The ADA4622-1ARZ includes input EMI filters to increase signal robustness against closely located switching noise sources.
- What is the slew rate of the ADA4622-1ARZ?
The slew rate is 23 V/µs (low to high) and −18 V/µs (high to low).
- Is the ADA4622-1ARZ RoHS compliant?
Yes, the ADA4622-1ARZ is RoHS compliant.
- What are some typical applications for the ADA4622-1ARZ?
Typical applications include industrial automation, medical devices, aerospace and defense, test and measurement equipment, and automotive systems.
