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AD8508 Folha de dados(PDF) 1 Page - Analog Devices

Nome de Peças AD8508
Descrição Electrónicos  20 關A Maximum, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifiers
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Página de início  http://www.analog.com
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20 μA Maximum, Rail-to-Rail I/O,
Zero Input Crossover Distortion Amplifiers
AD8506/AD8508
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007–2008 Analog Devices, Inc. All rights reserved.
FEATURES
PSRR: 100 dB minimum
CMRR: 105 dB typical
Very low supply current: 20 μA per amp maximum
1.8 V to 5 V single-supply or ±0.9 V to ±2.5 V dual-supply
operation
Rail-to-rail input and output
Low noise: 45 nV/√Hz @ 1 kHz
2.5 mV offset voltage maximum
Very low input bias current: 1 pA typical
APPLICATIONS
Pressure and position sensors
Remote security
Bio sensors
IR thermometers
Battery-powered consumer equipment
Hazard detectors
PIN CONFIGURATIONS
OUT A 1
–IN A 2
+IN A 3
V– 4
V+
8
OUT B
7
–IN B
6
+IN B
5
AD8506
TOP VIEW
(Not to Scale)
Figure 1. 8-Lead MSOP (RM-8)
OUT A 1
–IN A 2
+IN A 3
V+
4
OUT D
–IN D
+IN D
V–
14
13
12
11
+IN B 5
–IN B
6
OUT B 7
+IN C
–IN C
OUT C
10
9
8
AD8508
TOP VIEW
(Not to Scale)
Figure 2. 14-Lead TSSOP (RU-14)
GENERAL DESCRIPTION
The AD8506/AD8508 are dual and quad micropower amplifiers
featuring rail-to-rail input and output swings while operating from
a 1.8 V to 5 V single or from ±0.9 V to ±2.5 V dual power supply.
Using a novel circuit technology, these low cost amplifiers offer
zero crossover distortion (excellent PSRR and CMRR perform-
ance) and very low bias current, while operating with a supply
current of less than 20 μA per amplifier. This amplifier family
offers the lowest noise in its power class.
This combination of features makes the AD8506/AD8508
amplifiers ideal choices for battery-powered applications
because they minimize errors due to power supply voltage
variations over the lifetime of the battery and maintain high
CMRR even for a rail-to-rail input op amp.
Remote battery-powered sensors, handheld instrumentation
and consumer equipment, hazard detection (for example, smoke,
fire, and gas), and patient monitors can benefit from the features
of the AD8506/AD8508 amplifiers.
The AD8506/AD8508 are specified for both the industrial
temperature range of −40°C to +85°C and the extended industrial
temperature range of −40°C to +125°C. The AD8506 dual amplifi-
ers are available in an 8-lead MSOP package. The AD8508 quad
amplifiers are available in the 14-lead TSSOP package.


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