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AD623ARZ-RL 参数 Datasheet PDF下载

AD623ARZ-RL图片预览
型号: AD623ARZ-RL
PDF下载: 下载PDF文件 查看货源
内容描述: 单电源,轨到轨,低成本仪表放大器 [Single-Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier]
分类和应用: 仪表放大器放大器电路光电二极管
文件页数/大小: 24 页 / 1431 K
品牌: AD [ ANALOG DEVICES ]
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Single-Supply, Rail-to-Rail, Low Cost
Instrumentation Amplifier
AD623
FEATURES
Easy to use
Higher performance than discrete design
Single-supply and dual-supply operation
Rail-to-rail output swing
Input voltage range extends 150 mV below
ground (single supply)
Low power, 550 μA maximum supply current
Gain set with one external resistor
Gain range: 1 (no resistor) to 1000
High accuracy dc performance
0.10% gain accuracy (G = 1)
0.35% gain accuracy (G > 1)
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 dB minimum CMRR (G = 10); 70 dB minimum CMRR (G = 1)
at 60 Hz, 1 kΩ source imbalance
800 kHz bandwidth (G = 1)
20 μs settling time to 0.01% (G = 10)
CONNECTION DIAGRAM
–R
G
–IN
+IN
–V
S
AD623
1
2
3
4
8
7
6
5
+R
G
+V
S
OUTPUT
REF
00778-001
TOP VIEW
(Not to Scale)
Figure 1. 8-Lead PDIP (N), SOIC (R), and MSOP (RM) Packages
120
110
100
90
CMR (dB)
×1000
×100
80
70
×10
60
50
40
30
1
10
100
1k
10k
100k
FREQUENCY (Hz)
×1
Figure 2. CMR vs. Frequency, 5 V
S
, 0 V
S
APPLICATIONS
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.
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 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 registered trademarks are the 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.
00778-002