Data Sheet

ADA4622-1/ADA4622-2/ADA4622-4

30 V, 8 MHz, Low Bias Current, Single Supply, RRO, Precision Op Amp

Rev. F

DOCUMENT FEEDBACK

TECHNICAL SUPPORT

Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog

Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to

change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

FEATURES

►

Next generation of the AD820/AD822/AD824

►

Wide gain bandwidth product: 8 MHz typical

►

High slew rate

►

23 V/µs typical (low to high)

►

−18 V/µs typical (high to low)

►

Low input bias current: ±10 pA maximum at TA = 25°C

►

Low offset voltage

►

A grade: ±0.8 mV maximum at TA = 25°C

►

B grade: ±0.35 mV maximum at TA = 25°C

►

Low offset voltage drift

►

A grade: ±4 µV/°C maximum

►

B grade: ±2 µV/°C maximum (ADA4622-2 only)

►

B grade: ±1 µV/°C maximum (ADA4622-1 only)

►

Input voltage range includes Pin V−

►

Rail-to-rail output

►

Electromagnetic interference rejection ratio (EMIRR)

►

90 dB typical at f = 1000 MHz and f = 2400 MHz

►

Industry-standard package and pinouts

APPLICATIONS

►

High output impedance sensor interfaces

►

Photodiode sensor interfaces

►

Transimpedance amplifiers

►

ADC drivers

►

Precision filters and signal conditioning

PIN CONFIGURATION

Figure 1. 8-Lead Mini Small Outline Package [MSOP] Pin Configuration (See

the Pin Configurations and Function Descriptions Section for Additional Pin

Configurations)

GENERAL DESCRIPTION

The ADA4622-1/ADA4622-2/ADA4622-4 are the next generation

of the AD820/AD822/AD824 single-supply, rail-to-rail output (RRO),

precision junction field effect transistors (JFET) input op amps. The

ADA4622-1/ADA4622-2/ADA4622-4 include many improvements

that make them desirable as upgrades without compromising the

flexibility and ease of use that makes the AD820/AD822/AD824

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 increase the signal robustness in

the face of closely located switching noise sources.

The speed, in terms of bandwidth and slew rate, increases along

with a strong output drive to improve settling time performance and

enables the devices to drive the inputs of modern single-ended,

successive approximation register (SAR) analog-to-digital convert-

ers (ADCs).

Voltage noise is reduced; although the supply current remains the

same as the AD820/AD822/AD824, broadband noise is reduced

by 25%, and 1/f is reduced by half. DC precision in the ADA4622-1/

ADA4622-2/ADA4622-4 improved from the AD820/AD822/AD824

with half the offset and a maximum thermal drift specification added

to the ADA4622-1/ADA4622-2/ ADA4622-4. The common-mode re-

jection ratio (CMRR) is improved from the AD820/AD822/AD824 to

make the ADA4622-1/ADA4622-2/ADA4622-4 more suitable when

used in noninverting gain and difference amplifier configurations.

The ADA4622-1/ADA4622-2/ADA4622-4 are specified for operation

over the extended industrial temperature range of −40°C to +125°C,

and operate from 5 V to 30 V, with specifications at +5 V, ±5 V, and

±15 V. The ADA4622-1 is available in a 5-lead SOT-23 package

and an 8-lead LFCSP package. The ADA4622-2 is available in an

8-lead SOIC_N package, an 8-lead MSOP package, and an 8-lead

LFCSP package. The ADA4622-4 is available in a 14-lead SOIC_N

and a 16-lead, 4 × 4 mm LFCSP.