ADA4522-2 Datasheet, PDF (1/30 Pages) Analog Devices – 55 V, EMI Enhanced, Zero Drift, Ultralow Noise, Rail-to-Rail Output Operational Amplifier

Data Sheet
55 V, EMI Enhanced, Zero Drift, Ultralow Noise,
Rail-to-Rail Output Operational Amplifier
ADA4522-2/ADA4522-4
FEATURES
Low offset voltage: 5 µV maximum
Extremely low offset voltage drift: 22 nV/°C maximum
Low voltage noise density: 5.8 nV/√Hz typical
117 nV p-p from 0.1 Hz to 10 Hz typical
Low input bias current: 50 pA typical
Unity-gain crossover: 3 MHz
Single-supply operation: input voltage range includes
ground and rail-to-rail output
Wide range of operating voltages
Single-supply operation: 4.5 V to 55 V
Dual-supply operation: ±2.25 V to ±27.5 V
Integrated EMI filters
Unity-gain stable
APPLICATIONS
LCR meter/megohmmeter front-end amplifiers
Load cell and bridge transducers
Magnetic force balance scales
High precision shunt current sensing
Thermocouple/RTD sensors
PLC input and output amplifiers
GENERAL DESCRIPTION
The ADA4522-2/ADA4522-4 are a dual/quad channel, zero
drift op amps with low noise and power, ground sensing inputs,
and rail-to-rail output, optimized for total accuracy over time,
temperature, and voltage conditions. The wide operating
voltage and temperature ranges, as well as the high open-loop
gain and very low dc and ac errors make the device well suited
for amplifying very small input signals and for accurately
reproducing larger signals in a wide variety of applications.
The ADA4522-2/ADA4522-4 performance is specified at 5.0 V, 30 V,
and 55 V power supply voltages and it operates over the range of
4.5 V to 55 V. It is an excellent selection for applications using single-
ended supplies of 5 V, 10 V, 12 V, and 30 V, or for applications using
higher single supplies and dual supplies of ±2.5 V, ±5 V, and
±15 V. The ADA4522-2/ADA4522-4 use on-chip filtering to
achieve high immunity to electromagnetic interference (EMI).
The ADA4522-2/ADA4522-4 are fully specified over the
extended industrial temperature range of −40°C to +125°C and
are available in 8-lead MSOP, 8-lead SOIC, 14-lead SOIC, and
14-lead TSSOP packages.
For ADA4522-4 pin connections and for more information
about the pin connections for these product, see the Pin
Configurations and Function Descriptions section.
Rev. B
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PIN CONNECTION DIAGRAM
OUT A 1
8 V+
–IN A 2 ADA4522-2 7 OUT B
+IN A 3
TOP VIEW
(Not to Scale)
6 –IN B
V– 4
5 +IN B
Figure 1. 8-Lead MSOP (RM Suffix) and 8-Lead SOIC (R Suffix)
Pin Configuration
100
A_V = 100
5V
30V
55V
10
1
0.1
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 2. Voltage Noise Density vs. Frequency, V_SY = ±15 V
Table 1. Zero Drift Op Amps (<0.1 µV/°C)
Supply Voltage 5 V
16 V
30 V
55 V
Single
ADA4528-1 AD8638 ADA4638-1
AD8628
AD8538
ADA4051-1
Dual
ADA4528-2 AD8639
ADA4522-2
AD8629
AD8539
ADA4051-2
Quad
AD8630
ADA4522-4
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