AD8663_16 Datasheet, PDF (1/15 Pages) Analog Devices – Low Noise, Precision, 16 V, CMOS, Rail-to-Rail Operational Amplifiers

Data Sheet
Low Noise, Precision, 16 V, CMOS,
Rail-to-Rail Operational Amplifiers
AD8663/AD8667/AD8669
FEATURES
Low offset voltage: 175 μV maximum @ VSY = 5 V
Low supply current: 275 μA maximum per amplifier
Single-supply operation: 5 V to 16 V
Low noise: 23 nV/√Hz
Low input bias current: 300 fA
Unity-gain stable
Small packages available
3 mm × 3 mm, 8-lead LFCSP
8-lead MSOP
Other packages
8-lead SOIC
14-lead SOIC
14-lead TSSOP
APPLICATIONS
Sensor front ends
Transimpedance amplifiers
Electrometer applications
Photodiode amplification
Low power ADC drivers
Medical diagnostic instruments
pH and ORP meters and probes
DAC or REF buffers
GENERAL DESCRIPTION
The AD8663/AD8667/AD8669 are rail-to-rail output amplifiers
that use the Analog Devices, Inc., patented DigiTrim® trimming
technique to achieve low offset voltage. The AD8663/AD8667/
AD8669 feature an extended operating range with supply
voltages up to 16 V. They also feature low input bias current,
low input offset voltage, and low current noise.
The combination of low offset, very low input bias current, and
a wide supply range makes these amplifiers useful in a wide variety
of applications usually associated with higher priced JFET ampli-
fiers. Systems using high impedance sensors, such as photodiodes,
benefit from the combination of low input bias current, low
noise, low offset, and wide bandwidth.
The ability to operate the device for single (5 V to 16 V) or dual
supplies (±2.5 V to ±8 V) supports many applications. The rail-
to-rail outputs provide increased dynamic range to drive low
PIN CONFIGURATIONS
AD8663
TOP VIEW
(Not to Scale)
NC 1
8 NC
–IN 2 AD8663 7 V+
+IN
3
TOP VIEW
(Not to Scale)
6
OUT
V– 4
5 NC
NC 1
–IN 2
+IN 3
V– 4
8 NC
7 V+
6 OUT
5 NC
NC = NO CONNECT
Figure 1. 8-Lead SOIC (R-8)
NOTES
1. NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
2. CONNECT THE EXPOSED PAD TO
V– OR LEAVE IT UNCONNECTED.
Figure 2. 8-Lead LFCSP (CP-8-13)
OUT A 1
–IN A 2
+IN A 3
V– 4
AD8667
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 3. 8-Lead MSOP (RM-8),
8-Lead SOIC (R-8)
OUT A 1
14 OUT D
–IN A 2
13 –IN D
+IN A 3 _AD864698 12 +IN D
V+ 4 TOP VIEW 11 V–
+IN B 5 ^{(Not to Scale)} 10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
Figure 4. 14-Lead SOIC (R-14),
14-Lead TSSOP (RU-14)
frequency data converters. The low bias current drift is well-
suited for precision I-to-V converters. The combination of
precision offset, offset drift, and low noise also make the op
amps ideal for gain, dc offset adjust, and active filter in both
instrumentation and medical applications. These low power
op amps can be used in IR thermometers, pH and ORP instru-
ments, pressure transducer front ends, and other sensor signal
conditioning circuits that are used in remote or wireless
applications.
The AD8663/AD8667/AD8669 are specified over the extended
industrial temperature range of −40°C to +125°C. The single
AD8663 is available in a narrow 8-lead SOIC package and a very
thin, 8-lead LFCSP. The dual AD8667 is available in a narrow
8-lead SOIC package and an 8-lead MSOP. The quad AD8669
is available in a 14-lead SOIC and 14-lead small TSSOP.
Rev. D
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