ADA4622-1 Datasheet, PDF (1/34 Pages) Analog Devices – 30 V, 8 MHz, Low Bias Current, Single-Supply, RRO, Precision Op Amps

Data Sheet
30 V, 8 MHz, Low Bias Current,
Single-Supply, RRO, Precision Op Amps
ADA4622-1/ADA4622-2
FEATURES
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
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
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.
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 enable the devices to drive the inputs of modern single-ended,
successive approximation register (SAR) analog-to-digital
converters (ADCs).
PIN CONFIGURATIONS
NIC 1
8 DISABLE
–IN 2 ADA4622-1 7 V+
+IN 3
TOP VIEW
(Not to Scale)
6 OUT
V– 4
5 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)
OUT A 1
–IN A 2
+IN A 3
V– 4
ADA4622-2
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 2. 8-Lead MSOP Pin Configuration, ADA4622-2 (See the Pin
Configurations and Function Descriptions Section for Additional Pin
Configurations)
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 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.
Rev. B
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