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參數(shù)資料
| 型號(hào)： | AD6231 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | 10 MHz, 20 V/レs, G = 1, 10, 100, 1000 i CMOS㈢ Programmable Gain Instrumentation Amplifier |
| 中文描述： | 10兆赫，20第V /レ秒，增益\u003d 1，10，100，1000 i的CMOS㈢可編程增益儀表放大器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 228K |
| 代理商： | AD6231 |
10 MHz, 20 V/μs, G = 1, 10, 100, 1000
i
CMOS
Programmable Gain Instrumentation Amplifier
Preliminary Technical Data
AD8253
FEATURES
Small package: 10-lead MSOP
Programmable gains: 1, 10, 100, 1000
Digital or pin-programmable gain setting
Wide supply: ±5 V to ±15 V
Excellent dc performance
High CMRR 120 dB , G = 100
Low gain drift: 10 ppm/°C
Low offset drift: 1.2 μV/°C , G = 1000
Excellent ac performance
Fast settling time: 615 ns to 0.001%
High slew rate: 20 V/μs
Low distortion:
High CMRR over frequency: 80 dB to 50 kHz
Low noise: 8 nV/√Hz, G = 1000
Low power: 4 mA
Rev. prA
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
Fax: 781.461.3113
2007 Analog Devices, Inc. All rights reserved.
www.analog.com
APPLICATIONS
Data acquisition
Biomedical analysis
Test and measurement
GENERAL DESCRIPTION
The AD8253 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 and fast
settling time of 615 ns to 0.001%. Offset drift and gain drift are
specified to 1.2 μV/°C and 10 ppm/°C, respectively for G = 1000.
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 make the AD8253 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.
The AD8253 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
can be latched using the WR input. An alternative is to use
transparent gain mode where the state of logic levels at the gain
port determines the gain.
FUNCTIONAL BLOCK DIAGRAM
A1
A0
DGD
WR
Logic
AD8253
OUT
+VS
-VS
REF
+IN
-IN
Figure 1.
Table 1. Instrumentation and Difference Amplifiers by
Category
High
Performance
Cost
Voltage
AD8220
1
AD623
1
AD628
AD8221
AD8553
1
AD629
AD8222
AD8224
1
1
Rail-to-rail output.
The AD8253 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.
Low
High
Mil
Grade
AD620
AD621
AD524
AD526
AD624
Low
Power
AD627
1
Digital
Gain
AD8231
1
AD8250
AD8251
AD8555
1
AD8556
1
AD8557
1
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