30 V, 8 MHz, Low Bias Current,
Single-Supply, RRO, Precision Op Amps
Data Sheet
ADA4622-1/ADA4622-2
FEATURES
PIN CONFIGURATIONS
Next generation of the AD820/AD822
Wide gain bandwidth product: 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
NIC
–IN
+IN
V–
1
2
3
4
8
7
6
5
DISABLE
V+
ADA4622-1
TOP VIEW
OUT
(Not to Scale)
NIC
NOTES
1. NIC = NOT INTERNALLY CONNECTED.
Figure 1. 8-Lead SOIC Pin Configuration, ADA4622-1 (See the Pin
Configurations and Function Descriptions Section for Additional Pin
Configurations)
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
Electromagnetic interference rejection ratio (EMIRR)
90 dB typical at f = 1000 MHz and f = 2400 MHz
Industry-standard package and pinouts
1
2
3
4
OUT A
–IN A
+IN A
V–
8
7
6
5
V+
ADA4622-2
TOP VIEW
(Not to Scale)
OUT B
–IN B
+IN B
Figure 2. 8-Lead MSOP Pin Configuration, ADA4622-2 (See the Pin
Configurations and Function Descriptions Section for Additional Pin
Configurations)
APPLICATIONS
High output impedance sensor interfaces
Photodiode sensor interfaces
Transimpedance amplifiers
ADC drivers
Precision filters and signal conditioning
GENERAL DESCRIPTION
The ADA4622-1/ADA4622-2 are the next generation of the
AD820 and the AD822 single-supply, rail-to-rail output (RRO),
precision junction field effect transistors (JFET) input op amps.
The ADA4622-1/ADA4622-2 include many improvements
that make them desirable as an upgrade without compromising
the flexibility and ease of use that makes the AD820 and the
AD822 useful for a wide variety of applications.
Voltage noise is reduced; while keeping the supply current the
same as the AD820 and the AD822, broadband noise is reduced by
25%, and 1/f is reduced by half. DC precision in the ADA4622-1/
ADA4622-2 improved from the AD820 and the AD822 with
half the offset and a maximum thermal drift specification added
to the ADA4622-1/ADA4622-2. The common-mode rejection
ratio (CMRR) is improved from the AD820 and the AD822 to
make the ADA4622-1/ADA4622-2 more suitable when used in
noninverting gain and difference amplifier configurations.
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 ADA4622-1/ADA4622-2 are 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 ADA4622-1 is available in a 5-lead SOT-23 package
and an 8-lead LFCSP package, and the ADA4622-2 is available in
an 8-lead SOIC package, an 8-lead MSOP package, and an 8-lead
LFCSP package.
The speed, in terms of bandwidth and slew rate, increases along
with a strong output drive to improve settling time performance
and enable the devices to drive the inputs of modern single-ended,
successive approximation register (SAR) analog-to-digital
converters (ADCs).
Rev. B
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