30V, 7.5 MHz, Low Bias Current, Single Supply, RRO, Precision Op Amp
The ADA4622-2 is the next generation of the AD822 single-supply, rail-to-rail output (RRO), precision junction field effect transistors (JFET) input op amp. The ADA4622-2 includes many improvements that make it desirable as an upgrade without compromising the flexibility and ease of use that makes the AD822 useful for a wide variety of applications.
The input voltage range includes the negative supply and the output swings rail-to-rail. Input EMI filters are added to increase the signal robustness in the face of closely located switching noise sources.
The speed in terms of bandwidth and slew rate is increased along with a strong output drive to improve settling time performance and enable the device to drive the inputs of modern single-ended, successive approximation register (SAR) analog-to-digital converters (ADCs).
Voltage noise is reduced; broadband noise is reduced by 25% and 1/f is reduced by half while keeping the supply current the same as the AD822. DC precision in the ADA4622-2 improved from the AD822 with half the offset and a maximum thermal drift specification added to the ADA4622-2. The commonmode rejection ratio (CMRR) is improved from the AD822 to make the ADA4622-2 more suitable when used in noninverting gain and difference amplifier configurations.
The ADA4622-2 is specified for operation over the extended industrial temperature range of −40°C to +125°C and operates from 5 V to 30 V with specifications at +5 V, ±5 V, and ±15 V. The ADA4622-2 is available in 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP packages.
- High output impedance sensor interfaces
- Photodiode sensor interfaces
- Transimpedance amplifiers
- ADC drivers
- Precision filters and signal conditioning
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
- EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
- EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
- EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8
MT-095: EMI, RFI, and Shielding Concepts
MT-054: Precision Op Amps
Low-Power, Low-Voltage IC Choices for ECG System Requirements
(Analog Dialogue, Vol. 29, No. 3, 1995)
MS-2066: Low Noise Signal Conditioning for Sensor-Based Circuits
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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