參數(shù)資料
型號: AD8420ARMZ-R7
廠商: Analog Devices Inc
文件頁數(shù): 1/28頁
文件大小: 0K
描述: IC AMP INSTR RR 2.5KHZ 8MSOP
標準包裝: 1,000
放大器類型: 儀表
電路數(shù): 1
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 1 V/µs
-3db帶寬: 250kHz
電流 - 輸入偏壓: 20nA
電壓 - 輸入偏移: 250µV
電流 - 電源: 85µA
電流 - 輸出 / 通道: 10mA
電壓 - 電源,單路/雙路(±): 2.7 V ~ 36 V,±2.7 V ~ 18 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-MSOP
包裝: 帶卷 (TR)
Wide Supply Range, Micropower,
Rail-to-Rail Instrumentation Amplifier
Data Sheet
Rev. 0
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
2012 Analog Devices, Inc. All rights reserved.
FEATURES
Maximum supply current: 80 μA
Minimum CMRR: 100 dB
Drives heavy capacitive loads: ~700 pF
Rail-to-rail output
Input voltage range goes below ground
Gain set with 2 external resistors
Can achieve low gain drift at any gain
Very wide power supply range
Single supply: 2.7 V to 36 V
Dual supply: ±2.7 V to ±18 V
Bandwidth (G = 100): 2.5 kHz
Input voltage noise: 55 nV/√Hz
High dc precision
Maximum offset voltage: 125 μV
Maximum offset drift: 1 μV/
°C
Maximum differential input voltage: ±1 V
8-lead MSOP package
APPLICATIONS
Bridge amplifiers
Pressure measurement
Medical instrumentation
Portable data acquisition
Multichannel systems
PIN CONFIGURATION
NC 1
+IN 2
–IN 3
–VS 4
VOUT
8
FB
7
REF
6
+VS
5
AD8420
TOP VIEW
(Not to Scale)
+
+
09
94
5
-00
1
Figure 1.
Table 1. Instrumentation Amplifiers by Category1
General Purpose
Zero
Drift
Military
Grade
Low
Power
Digital
Gain
1 See www.analog.com for the latest instrumentation amplifiers.
GENERAL DESCRIPTION
The AD8420 is a low cost, micropower, wide supply range,
instrumentation amplifier with a rail-to-rail output and a novel
architecture that allows for extremely flexible design. It is optimized
to amplify small differential voltages in the presence of large
common-mode signals.
The AD8420 is based on an indirect current feedback architecture
that gives it an excellent input common-mode range. Unlike
conventional instrumentation amplifiers, the AD8420 can easily
amplify signals at or even slightly below ground without requiring
dual supplies. The AD8420 has rail-to-rail output, and the output
voltage swing is completely independent of the input common-
mode voltage.
Single-supply operation, micropower current consumption, and
rail-to-rail output swing make the AD8420 ideal for battery-
powered applications. Its rail-to-rail output stage maximizes
dynamic range when operating from low supply voltages. Dual-
supply operation (±15 V) and low power consumption make
the AD8420 ideal for a wide variety of applications in medical
or industrial instrumentation.
The AD8420 is available in an 8-lead MSOP package. Performance
is specified over the full temperature range of 40°C to +85°C,
and the part is operational from 40°C to +125°C.
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