Overview
The ADA4622-1ARJZ-R2 is a precision operational amplifier produced by Analog Devices Inc. It is part of the ADA4622 series, which represents the next generation of single-supply, rail-to-rail output (RRO), precision junction field effect transistors (JFET) input op amps. This device is designed to offer improved performance over its predecessors, such as the AD820, AD822, and AD824, with enhancements in DC precision, noise reduction, and increased speed.
The ADA4622-1ARJZ-R2 operates over an extended industrial temperature range of −40°C to +125°C and can be powered from 5 V to 30 V. It features input EMI filters to enhance signal robustness against switching noise and is capable of driving the inputs of modern single-ended, successive approximation register (SAR) analog-to-digital converters (ADCs).
Key Specifications
| Parameter | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage (VOS) | A Grade, −40°C < TA < +125°C | ±0.04 | ±0.8 | ±2 | mV |
| Offset Voltage Drift (ΔVOS/ΔT) | A Grade, −40°C < TA < +125°C | ±2 | ±15 | - | µV/°C |
| Input Bias Current (IB) | - | ±2 | ±10 | - | pA |
| Bandwidth | -3 dB, AV = 1 | - | 10 | - | MHz |
| Slew Rate (SR) | VOUT = ±3 V, RL = 2 kΩ, CL = 100 pF, AV = 1 | 21 | - | - | V/µs |
| Supply Voltage Range | - | 5 V to 30 V | - | - | V |
| Output Current (IOUT) | VDROPOUT < 1 V | - | 20 | - | mA |
| Common-Mode Rejection Ratio (CMRR) | A Grade, VCM = 0 V to 2 V | 70 | 87 | - | dB |
| Package | - | - | - | SOT-23, 5 Pins | - |
Key Features
- Rail-to-Rail Output: The output voltage swings rail-to-rail, enhancing the device's ability to drive loads effectively.
- Low Noise: Broadband noise is reduced by 25%, and 1/f noise is reduced by half compared to previous models.
- High Speed: Features a bandwidth of 10 MHz and a slew rate of 21 V/µs, making it suitable for high-speed applications.
- Input EMI Filters: Increases signal robustness against closely located switching noise sources.
- DC Precision: Improved offset voltage and thermal drift specifications enhance DC precision.
- Wide Operating Temperature Range: Operates over an extended industrial temperature range of −40°C to +125°C.
- Flexible Power Supply: Can be powered from 5 V to 30 V, making it versatile for various applications.
Applications
- Analog-to-Digital Converters (ADCs): Capable of driving the inputs of modern single-ended SAR ADCs.
- Industrial Automation: Suitable for applications requiring high precision and reliability over a wide temperature range.
- Medical Devices: Used in medical equipment where low noise and high DC precision are critical.
- Aerospace and Defense: Applicable in systems that require robust performance under extreme temperatures.
- Test and Measurement Equipment: Ideal for precision measurement instruments due to its high accuracy and stability.
Q & A
- What is the operating temperature range of the ADA4622-1ARJZ-R2?
The ADA4622-1ARJZ-R2 operates over an extended industrial temperature range of −40°C to +125°C.
- What is the supply voltage range for the ADA4622-1ARJZ-R2?
The device can be powered from 5 V to 30 V.
- What is the bandwidth of the ADA4622-1ARJZ-R2?
The bandwidth is 10 MHz at a gain of 1.
- What is the slew rate of the ADA4622-1ARJZ-R2?
The slew rate is 21 V/µs for low to high transition and -16 V/µs for high to low transition.
- What package types are available for the ADA4622-1ARJZ-R2?
The ADA4622-1ARJZ-R2 is available in a 5-lead SOT-23 package.
- How does the ADA4622-1ARJZ-R2 improve over its predecessors?
The ADA4622-1ARJZ-R2 offers improved DC precision, reduced noise, and increased speed compared to the AD820, AD822, and AD824.
- What are the key applications of the ADA4622-1ARJZ-R2?
Key applications include driving inputs of SAR ADCs, industrial automation, medical devices, aerospace and defense, and test and measurement equipment.
- What is the common-mode rejection ratio (CMRR) of the ADA4622-1ARJZ-R2?
The CMRR is 70 dB to 87 dB for the A Grade over the specified temperature range.
- Does the ADA4622-1ARJZ-R2 have built-in EMI filters?
Yes, the device includes input EMI filters to increase signal robustness against switching noise.
- What is the output current capability of the ADA4622-1ARJZ-R2?
The output current is 20 mA when VDROPOUT is less than 1 V.
