參數(shù)資料
型號: AD8231TCPZ-EP-R7
廠商: Analog Devices Inc
文件頁數(shù): 1/20頁
文件大小: 0K
描述: IC INSTR AMP PROGR ENH 16LFCSP
標(biāo)準包裝: 1,500
放大器類型: 儀表
電路數(shù): 2
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 1.1 V/µs
增益帶寬積: 7MHz
電流 - 輸入偏壓: 250pA
電壓 - 輸入偏移: 4µV
電流 - 電源: 4mA
電流 - 輸出 / 通道: 70mA
電壓 - 電源,單路/雙路(±): 3 V ~ 6 V,±1.5 V ~ 3 V
工作溫度: -55°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 16-VQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 16-LFCSP-VQ EP(4x4)
包裝: 帶卷 (TR)
Zero Drift, Digitally Programmable
Instrumentation Amplifier
AD8231-EP
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
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
2011 Analog Devices, Inc. All rights reserved.
FEATURES
Digitally/pin-programmable gain
G = 1, 2, 4, 8, 16, 32, 64, or 128
Specified from 55°C to +125°C
50 nV/°C maximum input offset drift
10 ppm/°C maximum gain drift
Excellent dc performance
80 dB minimum CMR, G = 1
15 μV maximum input offset voltage
500 pA maximum bias current
0.7 μV p-p noise (0.1 Hz to 10 Hz)
Good ac performance
2.7 MHz bandwidth, G = 1
1.1 V/μs slew rate
Rail-to-rail output
Shutdown/multiplex
Extra op amp
Single-supply range: 3 V to 6 V
Dual-supply range: ±1.5 V to ±3 V
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC
standard)
Military temperature range (55°C to +125°C)
Controlled manufacturing baseline
One assembly/test site
One fabrication site
Enhanced product change notification
Qualification data available on request
FUNCTIONAL BLOCK DIAGRAM
IN-AMP
LOGIC
NC
1
–INA
2
+INA
3
NC
4
+VS
12
–VS
11
OUTA
10
REF
9
A2
16
A1
15
A0
14
CS
13
SD
N
5
+I
NB
6
–I
NB
7
OU
T
B
8
OP
AMP
AD8231-EP
09
707
-00
1
Figure 1.
Table 1. Instrumentation and Difference Amplifiers by
Category
High
Performance
Low
Cost
High
Voltage
Mil
Grade
Low
Power
Digital
Gain
1 Rail-to-rail output.
GENERAL DESCRIPTION
The AD8231-EP is a low drift, rail-to-rail, instrumentation
amplifier with software-programmable gains of 1, 2, 4, 8, 16, 32, 64,
or 128. The gains are programmed via digital logic or pin
strapping.
The AD8231-EP is ideal for applications that require precision
performance over a wide temperature range, such as industrial
temperature sensing and data logging. Because the gain setting
resistors are internal, maximum gain drift is only 10 ppm/°C for
gains of 1 to 32. Because of the auto-zero input stage, maximum
input offset is 15 μV and maximum input offset drift is just
50 nV/°C. CMRR is 80 dB for G = 1, increasing to 110 dB at
higher gains.
The AD8231-EP also includes an uncommitted op amp that can
be used for additional gain, differential signal driving, or filtering.
Like the in-amp, the op amp has an auto-zero architecture, rail-
to-rail input, and rail-to-rail output.
The AD8231-EP includes a shutdown feature that reduces current
to a maximum of 1 μA. In shutdown, both amplifiers also have
a high output impedance, which allows easy multiplexing of
multiple amplifiers without additional switches.
The AD8231-EP is specified over the military temperature
range of 55°C to +125°C. It is available in a 4 mm × 4 mm 16-
lead LFCSP.
Additional application and technical information can be found
in the AD8231 data sheet.
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