Precision Amplifiers (VOS < 1 mV, Bandwidth < 50 MHz)
Rail-to-Rail Input/Output Amplifiers
AD8656: Low power, Precision RRIO CMOS Amplifier
The AD8656 provides low noise (2.7 nV/√Hz @ 10 kHz), low THD + N (0.0007%), and high precision performance (250 µV max over VCM) to low voltage
applications. The ability to swing rail-to-rail at the input and output enables designers to buffer analog-to-digital converters (ADCs) and other wide dynamic
range devices in single-supply systems.
Features
•ꢀLow noise: 2.7 nV/√Hz @ f = 10 kHz
T
V
V
IN
V
= ꢀ2.5V
S
•ꢀLow offset voltage: 250 mV max over VCM (common-mode voltage)
•ꢀOffset voltage drift:; 0.4 mV/°C typ and 2.3 µV/°C max
•ꢀBandwidth: 28 MHz
C
= 50pF
L
GAIN = +1
OUT
•ꢀRail-to-rail input/output
•ꢀUnity-gain stable
2
1
Applications
•ꢀADC and DAC buffers
•ꢀAudio
•ꢀIndustrial controls
•ꢀPrecision filters
•ꢀDigital scales
•ꢀStrain gages
•ꢀPLL filters
20ꢁs/DIV
No phase reversal.
Rail-to-Rail Input/Output Amplifiers
Supply
BW @ Slew
TcVOS BW @ Slew
(mv/°C ACL Min Rate
TcVOS
(mv/°C
Typ)
Price
@ 1k
(OEM $US)
A
(E#)
Vo Min
Part
No. of
VOS
(mV Max)
IS/Amp
(mA Max)
Process
Voltage Rail-to-Rail1 ACL Min Rate
IB Max
Packaging
Number Amps
(Min/Max)
(MHz) (V/ms)
Typ)
(MHz) (V/ms)
ADA4528-1
ADA4528-2*
1
2
1.15
1.90
CMOS
CMOS
2.2/5.5
RRIO
RRIO
4
0.4
5
0.0025
0.3
0.015
115
85
120
80
130
5.3
8
1.500 100 pA
MSOP/LFCSP
AD8605
AD8606
AD8608
1
2
4
WLCSP/SOT-23
WLCSP/MSOP/SOIC
SOIC/TSSOP
0.68
1.19
1.58
2.7/6
10
1
109
1.200
1 pA
AD8646
AD8648
2
4
MSOP/SOIC
SOIC/TSSOP
0.61
0.88
CMOS
CMOS
2.7/6
2.7/6
RRIO
RRIO
24
24
11
11
2.5
2.5
1.8
1.8
67
67
63
63
104
104
8
8
1.500
1.500
1 pA
1 pA
AD8647 SD
2
MSOP
0.71
AD8615
AD8616
AD8618
1
2
4
SOT-23
MSOP/SOIC
SOIC/MSSOP
0.76
1.29
2.29
CMOS
2.7/6
RRIO
24
12
0.5
1.5
80
70
105
10
1.300
1 pA
AD8628
AD8629
AD8630
1
2
4
SOT-23/SOIC
MSOP/SOIC
SOIC/TSSOP
0.96
1.47
2.73
CMOS
CMOS
CMOS
2.7/6
1.8/6
1.8/6
RRIO
RRIO
RRIO
2.5
5
1
0.005
6
0.002
120
60
115
65
125
113
112
22
22
25
0.850 100 pA
AD8515
1
2.7
0.1
4
1
0.550
0.040
30 pA
1 pA
SC70/SOT-23
0.28
AD8603
AD8607
AD8609
1
2
4
SOT-23
MSOP/SOIC
SOIC/MSSOP
0.68
1.02
1.85
0.4
0.3
85
80
ADA4091-2
ADA4091-4
2
4
SOIC/LFCSP
LFCSP/TSSOP
2.22
3.50
Bipolar
RRIO
RRIO
1.27
0.4
0.46
0.1
0.25
2.2
2.5
1
104
68
108
67
116
107
25
25
0.250
0.040
55 nA
1 pA
61.35/618
AD8613
AD8617
AD8619
1
2
4
SC70/SOT-23
MSOP/SOIC
SOIC/TSSOP
0.46
0.71
1.11
CMOS
1.8/5.5
*Prerelease
Operational Amplifier Selection Guide
32
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ADI [ ADI ]
