Precision Amplifiers (VOS < 1 mV, Bandwidth < 50 MHz)
Zero-Drift Amplifiers
ADA4528-1: Precision, Ultralow Noise, RRIO, Zero-Drift Op Amp
The ADA4528-1 is an ultralow noise, zero-drift operational amplifier featuring rail-to-rail input and output swing. With an offset voltage of 2.5 mV, offset
voltage drift of 0.015 mV/°C, and noise of 97 nV p-p (0.1 Hz to 10 Hz, AV = +100), the device is well suited for applications in which error sources cannot
be tolerated. With wide operating supply range of 2.2 V to 5.5 V, high gain and excellent CMRR and PSRR specifications, the ADA4528-1 is ideal for
precision amplification of low level signals, such as position and pressure sensors, strain gages, and medical instrumentation.
Features
100
•ꢀLow offset: 2.5 mV maximum
V
V
= 5V
SY
CM
= V /2
SY
•ꢀLow offset voltage drift: 0.015 mV/°C maximum
•ꢀLow noise
√
•ꢀ5.6 nV/ Hz at f = 1 kHz, AV = +100
•ꢀ97 nV p-p at f = 0.1 Hz to 10 Hz, AV = +100
•ꢀOpen-loop voltage gain: 130 dB minimum
•ꢀCMRR: 135 dB minimum
no 1/f noise
10
•ꢀPSRR: 130 dB minimum
•ꢀGain bandwidth product: 4 MHz
•ꢀSingle-supply operation: 2.2 V to 5.5 V
•ꢀDual-supply operation: ±1.1 V to ±2.75 V
•ꢀRail-to-rail input and output
A
= 1
V
1
1
10
100
1k
10k
•ꢀUnity-gain stable
FREQUENCY (Hz)
Application
Voltage noise density vs. frequency.
•ꢀThermocouple/thermopile
•ꢀLoad cell and bridge transducer
•ꢀPrecision instrumentation
•ꢀElectronic scales
•ꢀMedical instrumentation
•ꢀHandheld test equipment
Zero Drift Amplifiers
Supply
BW @ Slew
CMRR PSRR AVO
Min Min Min (nV/
(dB) (dB) (dB) @ 1 kHz
Noise
Price
@ 1k
(OEM $US)
Part
Number
No. of
Amps
VOS Max
(mV)
TcVOS
(mv/°C Typ)
IS/Amp IB Max
(mA Max) (pA)
Process
Voltage Rail-to-Rail1 ACL Min Rate
√
H
z)
Packaging
(Min/Max)
(MHz) (V/ms)
AD8628
AD8629
AD8630
1
2
4
SOT-23/SOIC
MSOP/SOIC
SOIC/TSSOP
0.96
1.47
2.73
CMOS
2.7/6
RRIO
2.5
1
0.005
0.002
120 115 125
22
0.850
100
ADA4528-1
ADA4528-2*
1
2
1.15
1.90
CMOS
CMOS
CMOS
2.2/5.5
1.8/5.5
2.7/5.5
RRIO
RRIO
RRIO
4
0.4
0.0025
0.015
0.013
0.015
0.02
0.03
115 120 130
110 110 115
115 105 115
5.3
95
50
1.500
0.017
0.180
100
70
MSOP/LFCSP
ADA4051-1
ADA4051-2
1
2
SC70/SOT-23
MSOP/LFCSP
0.93
1.47
0.125
0.43
0.06
0.35
AD8538
AD8539
1
2
SOT-23/SOIC
MSOP/SOIC
0.90
1.31
25
AD8551
AD8552
AD8554
1
2
4
MSOP/SOIC
SOIC/TSSOP
SOIC/TSSOP
1.20
1.90
3.36
CMOS
CMOS
2.7/6
RRIO
1.5
0.4
0.005
0.005
120 120 125
42
0.975
50
AD8571
AD8572
AD8574
1
2
4
MSOP/SOIC
SOIC/TSSOP
SOIC/TSSOP
1.11
1.78
3.40
2.7/6
5/16
RRIO
SS
1.5
1.5
0.4
2
0.005
0.009
0.005
0.03
120 120 125
127 127 130
51
60
0.850
1.500
50
75
AD8638
AD8639
1
2
SOT-23/SOIC
MSOP/SOIC/LFCSP
1.27
2.19
CMOS
*Prerelease
1 RRIO: Rail-to-rail input/output, RRO: rail-to-rail output, SS: single supply (IVR includes –VSY).
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