Datasheet AD8663, AD8667, AD8669 (Analog Devices)

Low Noise, Precision, 16 V, CMOS, Rail-to-Rail Operational Amplifiers Data Sheet AD8663/ AD8667/ AD8669 FEATURES PIN CONFIGURATIONS Low offset voltage: 175 μV maximum @ VSY = 5 V AD8663 Low supply current: 275 μA maximum per amplifier TOP VIEW (Not to Scale) Single-supply operation: 5 V to 16 V NC NC 1 8 NC 1 8 NC Low noise: 23 nV/√Hz –IN 2 AD8663 7 V+ –IN 2 7 V+ Low input bias current: 300 fA TOP VIEW +IN 3 6 OUT (Not to Scale) +IN 3 6 OUT Unity-gain stable V– 4 5 NC
1
V– 4 5 NC Small packages available
00 2-
NC = NO CONNECT
74
NOTES 3 mm × 3 mm, 8-lead LFCSP
06
1. NC = NO CONNECT. DO NOT
02
CONNECT TO THIS PIN. 8-lead MSOP
0 2-
2. CONNECT THE EXPOSED PAD TO V– OR LEAVE IT UNCONNECTED.
674
Other packages
0 Figure 1. 8-Lead SOIC (R-8) Figure 2. 8-Lead LFCSP (CP-8-13)
8-lead SOIC 14-lead SOIC 14-lead TSSOP OUT A 1 14 OUT D APPLICATIONS –IN A 2 13 –IN D OUT A 1 8 V+ +IN A 3 12 +IN D AD A 86 8 48 669 Sensor front ends –IN A 2 AD8667 7 OUT B TOP VIEW V+ 4 TOP VIE I W E 11 V– Transimpedance amplifiers +IN A 3 6 –IN B (Not to Scale)
03
(Not (N to t Sc S a c le)
0
+IN B 5 10 +IN C V– 4 5 +IN B
2-
Electrometer applications
74
–IN B 6 9 –IN C
06 04 -0
Photodiode amplification OUT B 7 8 OUT C
42 67 0
Low power ADC drivers
Figure 3. 8-Lead MSOP (RM-8), Figure 4. 14-Lead SOIC (R-14),
Medical diagnostic instruments
8-Lead SOIC (R-8) 14-Lead TSSOP (RU-14)
pH and ORP meters and probes DAC or REF buffers GENERAL DESCRIPTION
The AD8663/AD8667/AD8669 are rail-to-rail output amplifiers frequency data converters. The low bias current drift is well- that use the Analog Devices, Inc., patented DigiTrim® trimming suited for precision I-to-V converters. The combination of technique to achieve low offset voltage. The AD8663/AD8667/ precision offset, offset drift, and low noise also make the op AD8669 feature an extended operating range with supply amps ideal for gain, dc offset adjust, and active filter in both voltages up to 16 V. They also feature low input bias current, instrumentation and medical applications. These low power low input offset voltage, and low current noise. op amps can be used in IR thermometers, pH and ORP instru- The combination of low offset, very low input bias current, and ments, pressure transducer front ends, and other sensor signal a wide supply range makes these amplifiers useful in a wide variety conditioning circuits that are used in remote or wireless of applications usually associated with higher priced JFET ampli- applications. fiers. Systems using high impedance sensors, such as photodiodes, The AD8663/AD8667/AD8669 are specified over the extended benefit from the combination of low input bias current, low industrial temperature range of −40°C to +125°C. The single noise, low offset, and wide bandwidth. AD8663 is available in a narrow 8-lead SOIC package and a very The ability to operate the device for single (5 V to 16 V) or dual thin, 8-lead LFCSP. The dual AD8667 is available in a narrow supplies (±2.5 V to ±8 V) supports many applications. The rail- 8-lead SOIC package and an 8-lead MSOP. The quad AD8669 to-rail outputs provide increased dynamic range to drive low is available in a 14-lead SOIC and 14-lead small TSSOP.
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Document Outline FEATURES APPLICATIONS PIN CONFIGURATIONS GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE