ADA4051-1_16 Datasheet, PDF (1/22 Pages) Analog Devices – 1.8 V, Micropower, Zero-Drift, Rail-to-Rail Input/Output Op Amps

Data Sheet
FEATURES
Very low supply current: 13 μA typical
Low offset voltage: 15 μV maximum
Offset voltage drift: 20 nV/°C
Single-supply operation: 1.8 V to 5.5 V
High PSRR: 110 dB minimum
High CMRR: 110 dB minimum
Rail-to-rail input/output
Unity-gain stable
Extended industrial temperature range
APPLICATIONS
Pressure and position sensors
Temperature measurements
Electronic scales
Medical instrumentation
Battery-powered equipment
Handheld test equipment
1.8 V, Micropower, Zero-Drift,
Rail-to-Rail Input/Output Op Amps
ADA4051-1/ADA4051-2
PIN CONFIGURATIONS
OUT 1
5 V+
ADA4051-1
V– 2 TOP VIEW
(Not to Scale)
+IN 3
4 –IN
Figure 1. 5-Lead SOT-23 (RJ-5)
+IN 1
5 V+
ADA4051-1
V– 2 TOP VIEW
(Not to Scale)
–IN 3
4 OUT
Figure 2. 5-Lead SC-70 (KS-5)
OUT A 1
–IN A 2
+IN A 3
V– 4
ADA4051-2
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 3. 8-Lead MSOP (RM-8)
OUT A 1
8 V+
–IN A 2
+IN A 3
V– 4
ADA4051-2
TOP VIEW
(Not to Scale)
7 OUT B
6 –IN B
5 +IN B
NOTES
1. IT IS RECOMMENDED THAT THE
EXPOSED PAD BE CONNECTED TO V–.
Figure 4. 8-Lead LFCSP (CP-8-13)
GENERAL DESCRIPTION
The ADA4051-1/ADA4051-2 are CMOS, micropower, zero-
drift operational amplifiers utilizing an innovative chopping
technique. These amplifiers feature rail-to-rail input/output
swing and extremely low offset voltage while operating from a
1.8 V to 5.5 V power supply. In addition, these amplifiers offer
high power supply rejection ratio (PSRR) and common-mode
rejection ratio (CMRR) while operating with a typical supply
current of 13 μA per amplifier. This combination of features
makes the ADA4051-1/ADA4051-2 amplifiers ideal choices for
battery-powered applications where high precision and low
power consumption are important.
The ADA4051-1/ADA4051-2 are specified for the extended
industrial temperature range of −40°C to +125°C. The ADA4051-1
amplifier is available in 5-lead SOT-23 and 5-lead SC-70 packages.
The ADA4051-2 amplifier is available in an 8-lead MSOP and an
8-lead LFCSP.
The ADA4051-1/ADA4051-2 are members of a growing series
of zero-drift op amps offered by Analog Devices, Inc. Refer to
Table 1 for a list of these devices.
Table 1. Op Amps
Supply Low Power, 5 V
Single AD8538
Dual
AD8539
Quad
5V
AD8628
AD8629
AD8630
16 V
AD8638
AD8639
Rev. C
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