參數(shù)資料
型號(hào): AD8293G160ARJZ-RL
廠商: Analog Devices Inc
文件頁數(shù): 1/16頁
文件大小: 0K
描述: IC AMP INST R-R LDRIFT SOT23-8
標(biāo)準(zhǔn)包裝: 10,000
放大器類型: 儀表
電路數(shù): 1
輸出類型: 滿擺幅
-3db帶寬: 500Hz
電流 - 輸入偏壓: 400pA
電壓 - 輸入偏移: 9µV
電流 - 電源: 1mA
電流 - 輸出 / 通道: 35mA
電壓 - 電源,單路/雙路(±): 1.8 V ~ 5.5 V,±0.9 V ~ 2.75 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: SOT-23-8
供應(yīng)商設(shè)備封裝: SOT-23-8
包裝: 帶卷 (TR)
Low Cost, Zero-Drift In-Amp
with Filter and Fixed Gain
AD8293G80/AD8293G160
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
2008 Analog Devices, Inc. All rights reserved.
FEATURES
Small package: 8-lead SOT-23
Reduced component count
Incorporates gain resistors and filter resistors
Low offset voltage: 20 μV maximum
Low offset drift: 0.3 μV/°C maximum
Low gain drift: 25 ppm/°C maximum
High CMR: 140 dB typical
Low noise: 0.7 μV p-p from 0.01 Hz to 10 Hz
Single-supply operation: 1.8 V to 5.5 V
Rail-to-rail output
Available in 2 fixed-gain models
APPLICATIONS
Current sensing
Strain gauges
Laser diode control loops
Portable medical instruments
Thermocouple amplifiers
FUNCTIONAL BLOCK DIAGRAM
1
8
7
5
6
4
OUTPUT TO ADC
WITH ANTIALIASING
FILTER
ADC OUT
FILT
+VS
–IN
+IN
R1
4k
R2
R3
5k
OUT
07
45
1
-00
1
AD8293Gxx
REF
GND
3
2
IN-AMP
Figure 1.
1
8
7
5
6
4
ADC OUT
FILT
+VS
I
1.8V
–IN
+IN
R1
4k
RSHUNT
R3
5k
+3.3V
10F
0.1F
C3
OUT
C2
0
745
1-
002
REF
GND
3
2
IN-AMP
ADC
REF
LOAD
DC-DC
+5V
0.1F
R2
AD8293Gxx
Figure 2. Measuring Current Using the AD8293G80/AD8293G160
Table 1. AD8293Gxx Models and Gains
Model
Gain
AD8293G80
80
AD8293G160
160
GENERAL DESCRIPTION
The AD8293G80/AD8293G160 are small, low cost, precision
instrumentation amplifiers that have low noise and rail-to-rail
outputs. They are available in two fixed-gain models: 80 and 160.
They incorporate the gain setting resistors and filter resistors,
reducing the number of ancillary components. For example,
only two external capacitors are needed to implement a 2-pole
filter. The AD8293G80/AD8293G160 also feature low offset
voltage, offset drift, and gain drift coupled with high common-
mode rejection. They are capable of operating on a supply of
1.8 V to 5.5 V.
With a low offset voltage of 20 μV (AD8293G160B), an offset
voltage drift of 0.3 μV/°C, and a voltage noise of only 0.7 μV p-p
(0.01 Hz to 10 Hz), the AD8293G80/AD8293G160 are ideal
for applications where error sources cannot be tolerated.
Precision instrumentation, position and pressure sensors,
medical instrumentation, and strain gauge amplifiers benefit
from the low noise, low input bias current, and high common-
mode rejection. The small footprint and low cost are ideal for
high volume applications.
The small package and low power consumption allow the maxi-
mum channel density and the minimum board size required for
portable systems. Designed for ease of use, these instrumentation
amplifiers, unlike more traditional ones, have a buffered reference,
eliminating the need for an additional op amp to set the reference
voltage to midsupply.
The AD8293G80/AD8293G160 are specified over the industrial
temperature range from 40°C to +85°C. The AD8293G80/
AD8293G160 are available in a halogen-free, Pb-free, 8-lead SOT-23.
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