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AD623BNZ PDF预览

AD623BNZ

更新时间: 2024-02-23 06:25:44
品牌 Logo 应用领域
亚德诺 - ADI 仪表放大器光电二极管
页数 文件大小 规格书
24页 1431K
描述
Single-Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier

AD623BNZ 数据手册

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Single-Supply, Rail-to-Rail, Low Cost  
Instrumentation Amplifier  
AD623  
FEATURES  
CONNECTION DIAGRAM  
AD623  
Easy to use  
1
2
3
4
8
7
6
5
–R  
+R  
G
G
Higher performance than discrete design  
Single-supply and dual-supply operation  
Rail-to-rail output swing  
–IN  
+IN  
+V  
S
OUTPUT  
REF  
–V  
S
Input voltage range extends 150 mV below  
ground (single supply)  
TOP VIEW  
(Not to Scale)  
Low power, 550 μA maximum supply current  
Gain set with one external resistor  
Gain range: 1 (no resistor) to 1000  
High accuracy dc performance  
Figure 1. 8-Lead PDIP (N), SOIC (R), and MSOP (RM) Packages  
120  
110  
0.10% gain accuracy (G = 1)  
0.35% gain accuracy (G > 1)  
100  
×1000  
10 ppm maximum gain drift (G = 1)  
200 μV maximum input offset voltage (AD623A)  
2 μV/°C maximum input offset drift (AD623A)  
100 μV maximum input offset voltage (AD623B)  
1 μV/°C maximum input offset drift (AD623B)  
25 nA maximum input bias current  
Noise: 35 nV/√Hz RTI noise @ 1 kHz (G = 1)  
Excellent ac specifications  
90  
×100  
80  
70  
×10  
60  
50  
×1  
40  
90 dB minimum CMRR (G = 10); 70 dB minimum CMRR (G = 1)  
at 60 Hz, 1 kΩ source imbalance  
800 kHz bandwidth (G = 1)  
30  
1
10  
100  
1k  
10k  
100k  
FREQUENCY (Hz)  
Figure 2. CMR vs. Frequency, 5 VS, 0 VS  
20 μs settling time to 0.01% (G = 10)  
APPLICATIONS  
The AD623 holds errors to a minimum by providing superior  
ac CMRR that increases with increasing gain. Line noise, as  
well as line harmonics, are rejected because the CMRR remains  
constant up to 200 Hz. The AD623 has a wide input common-  
mode range and can amplify signals that have a common-mode  
voltage 150 mV below ground. Although the design of the AD623  
was optimized to operate from a single supply, the AD623 still  
provides superior performance when operated from a dual  
voltage supply ( 2.5 V to 6.0 V).  
Low power medical instrumentation  
Transducer interfaces  
Thermocouple amplifiers  
Industrial process controls  
Difference amplifiers  
Low power data acquisition  
GENERAL DESCRIPTION  
The AD623 is an integrated single-supply instrumentation  
amplifier that delivers rail-to-rail output swing on a 3 V to 12 V  
supply. The AD623 offers superior user flexibility by allowing  
single gain set resistor programming and by conforming to the  
8-lead industry standard pinout configuration. With no external  
resistor, the AD623 is configured for unity gain (G = 1), and  
with an external resistor, the AD623 can be programmed for  
gains up to 1000.  
Low power consumption (1.5 mW at 3 V), wide supply voltage  
range, and rail-to-rail output swing make the AD623 ideal  
for battery-powered applications. The rail-to-rail output stage  
maximizes the dynamic range when operating from low supply  
voltages. The AD623 replaces discrete instrumentation amplifier  
designs and offers superior linearity, temperature stability, and  
reliability in a minimum of space.  
Rev. D  
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  
www.analog.com  
Fax: 781.461.3113 ©1997–2008 Analog Devices, Inc. All rights reserved.  
 

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