ADA4622-2 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.

Applications

High output impedance sensor interfaces
Photodiode sensor interfaces
Transimpedance amplifiers
ADC drivers
Precision filters and signal conditioning

Features and Benefits

Next generation of the AD822

Wide bandwidth: 8 MHz typical

High slew rate: +23 V/µs/−18 V/µs typical

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: ±2 µV/°C typical, ±15 µV/°C maximum

B grade: ±2 µV/°C typical, ±5 µV/°C maximum

Input voltage range includes Pin V−

Rail-to-rail output

Input electromagnetic interference (EMI) filters

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

Industry-standard package and pinouts

Amplifiers

Operational Amplifiers (Op Amps)

SPICE Models

ADA4622 SPICE Macro Model .CIR

Data Sheets

Document	note
ADA4622-2: 30V, 7.5 MHz, Low Bias Current, Single Supply, RRO, Precision Op Amp Data Sheet (Rev. A)	PDF 144.77 K

Application Notes

Document	note
AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change (Rev. B)	PDF 76.97 K
AN-256: Accurately Testing Op Amp Settling Times	PDF 106 kB
AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0)	PDF 5.3 M

Technical Books

Document	note

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADA4622-2ACPZ-R7 Production	8 ld LFCSP (3x3mm 1.74x1.45mm EP)	REEL 1500	-40 to 125C	0	1.97	Y
ADA4622-2ACPZ-RL Production	8 ld LFCSP (3x3mm 1.74x1.45mm EP)	REEL 5000	-40 to 125C	0	1.97	Y
ADA4622-2ARMZ Production	8 ld MSOP	OTH 50	-40 to 125C	2.59	1.97	Y
ADA4622-2ARMZ-R7 Production	8 ld MSOP	REEL 1000	-40 to 125C	0	1.97	Y
ADA4622-2ARMZ-RL Production	8 ld MSOP	REEL 3000	-40 to 125C	0	1.97	Y
ADA4622-2ARZ Production	8 ld SOIC	OTH 98	-40 to 125C	2.59	1.97	Y
ADA4622-2ARZ-R7 Production	8 ld SOIC	REEL 1000	-40 to 125C	0	1.97	Y
ADA4622-2ARZ-RL Production	8 ld SOIC	REEL 2500	-40 to 125C	0	1.97	Y
ADA4622-2BRZ Production	8 ld SOIC	OTH 98	-40 to 125C	3.89	2.96	Y
ADA4622-2BRZ-R7 Production	8 ld SOIC	REEL 1000	-40 to 125C	0	2.96	Y
ADA4622-2BRZ-RL Production	8 ld SOIC	REEL 2500	-40 to 125C	0	2.96	Y

Evaluation Boards

Part Number	Description	Price	RoHS
EVAL-PRAOPAMP-2CPZ	Dual CP-8 lead LFCSP Evaluation Board	20.19	Y
EVAL-PRAOPAMP-2RMZ	Dual RM-8 lead MSOP Evaluation Board	20.19	Y
EVAL-PRAOPAMP-2RZ	Dual R-8 lead SOIC Evaluation Board	20.19	Y