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AD8251ARMZ

更新时间: 2024-01-03 12:53:51
品牌 Logo 应用领域
亚德诺 - ADI 仪表放大器放大器电路光电二极管PC
页数 文件大小 规格书
24页 637K
描述
10 MHz, 20 V/レs, G = 1, 2, 4, 8 i CMOS㈢ Programmable Gain Instrumentation Amplifier

AD8251ARMZ 技术参数

是否Rohs认证:符合生命周期:Obsolete
Reach Compliance Code:compliant风险等级:5.84
Is Samacsys:N放大器类型:INSTRUMENTATION AMPLIFIER
JESD-30 代码:R-PDSO-G10功能数量:1
端子数量:10最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP10,.19,20
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源:+-5/+-12 V认证状态:Not Qualified
子类别:Instrumentation Amplifiers表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:0.5 mm
端子位置:DUALBase Number Matches:1

AD8251ARMZ 数据手册

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10 MHz, 20 V/μs, G = 1, 2, 4, 8 iCMOS®  
Programmable Gain Instrumentation Amplifier  
AD8251  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
DGND WR  
A1  
5
A0  
4
Small package: 10-lead MSOP  
Programmable gains: 1, 2, 4, 8  
Digital or pin-programmable gain setting  
Wide supply: 5 V to 15 V  
2
6
LOGIC  
1
–IN  
Excellent dc performance  
High CMRR: 98 dB (minimum), G = 8  
Low gain drift: 10 ppm/°C (maximum)  
Low offset drift: 1.8 μV/°C (maximum), G = 8  
Excellent ac performance  
7
OUT  
10  
+IN  
Fast settling time: 785 ns to 0.001% (maximum)  
High slew rate: 20 V/ꢀs (minimum)  
Low distortion: −110 dB THD at 1 kHz,10 V swing  
High CMRR over frequency: 80 dB to 50 kHz (minimum)  
Low noise: 18 nV/√Hz, G = 10 (maximum)  
Low power: 4 mA  
AD8251  
8
3
–V  
9
+V  
REF  
S
S
Figure 1.  
25  
APPLICATIONS  
20  
15  
10  
5
G = 8  
G = 4  
Data acquisition  
Biomedical analysis  
Test and measurement  
G = 2  
G = 1  
GENERAL DESCRIPTION  
The AD8251 is an instrumentation amplifier with digitally  
programmable gains that has GΩ input impedance, low output  
noise, and low distortion, making it suitable for interfacing with  
sensors and driving high sample rate analog-to-digital converters  
(ADCs). It has high bandwidth of 10 MHz, low THD of −110 dB,  
and fast settling time of 785 ns (maximum) to 0.001%. Offset  
drift and gain drift are guaranteed to 1.8 μV/°C and 10 ppm/°C,  
respectively, for G = 8. In addition to its wide input common  
voltage range, it boasts a high common-mode rejection of 80 dB  
at G = 1 from dc to 50 kHz. The combination of precision dc  
performance coupled with high speed capabilities makes the  
AD8251 an excellent candidate for data acquisition. Furthermore,  
this monolithic solution simplifies design and manufacturing  
and boosts performance of instrumentation by maintaining a  
tight match of internal resistors and amplifiers.  
0
–5  
–10  
1k  
100M  
10k  
100k  
1M  
10M  
FREQUENCY (Hz)  
Figure 2. Gain vs. Frequency  
Table 1. Instrumentation and Difference Amplifiers  
by Category  
High  
Low  
High  
Mil  
Low  
Digital  
Gain  
AD6271 AD82311  
Performance Cost  
Voltage Grade Power  
AD82201  
AD8221  
AD8222  
AD82241  
AD6231  
AD85531  
AD628  
AD629  
AD620  
AD621  
AD524  
AD526  
AD624  
AD8250  
AD85551  
AD85561  
AD85571  
The AD8251 user interface consists of a parallel port that allows  
users to set the gain in one of two different ways (see Figure 1  
for the functional block diagram). A 2-bit word sent via a bus  
1 Rail-to-rail output.  
WR  
can be latched using the  
input. An alternative is to use  
The AD8251 is available in a 10-lead MSOP package and is  
specified over the −40°C to +85°C temperature range, making it  
an excellent solution for applications where size and packing  
density are important considerations.  
transparent gain mode where the state of logic levels at the gain  
port determines the gain.  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2007 Analog Devices, Inc. All rights reserved.  
 
 

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