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AD7738BRU-REEL7 PDF预览

AD7738BRU-REEL7

更新时间： 2024-09-16 20:11:07
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管转换器
页数 文件大小 规格书
29页 443K
描述
8-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28, MO-153AE, TSSOP-28

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AD7738BRU-REEL7 数据手册

 浏览型号AD7738BRU-REEL7的Datasheet PDF文件第2页浏览型号AD7738BRU-REEL7的Datasheet PDF文件第3页浏览型号AD7738BRU-REEL7的Datasheet PDF文件第4页浏览型号AD7738BRU-REEL7的Datasheet PDF文件第5页浏览型号AD7738BRU-REEL7的Datasheet PDF文件第6页浏览型号AD7738BRU-REEL7的Datasheet PDF文件第7页 
8-Channel, High Throughput,  
a
24-Bit ꢀ-ꢁ ADC  
AD7738  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
High Resolution ADC  
24 Bits No Missing Codes  
MUXOUT ADCIN  
REFIN– REFIN+  
ꢂ0.0015% Nonlinearity  
REFERENCE  
DETECT  
AIN0  
AIN1  
AIN2  
AIN3  
AIN4  
AIN5  
AIN6  
AIN7  
Optimized for Fast Channel Switching  
18-Bits p-p Resolution (21 Bits Effective) at 500 Hz  
16-Bits p-p Resolution (19 Bits Effective) at 8.5 kHz  
15-Bits p-p Resolution (18 Bits Effective) at 15 kHz  
On-Chip Per Channel System Calibration  
Configurable Inputs  
8 Single-Ended or 4 Fully Differential  
Input Ranges  
+625 mV, +1.25 V, +2.5 V, ꢂ625 mV, ꢂ1.25 V, ꢂ2.5 V  
3-Wire Serial Interface  
BUFFER  
24-BIT  
ꢀ-ꢁ ADC  
MUX  
AD7738  
SCLK  
DOUT  
DIN  
SPI™, QSPI™, MICROWIRE™ and DSP Compatible  
Schmitt Trigger on Logic Inputs  
Single-Supply Operation  
CALIBRATION  
CIRCUITRY  
SERIAL  
INTERFACE  
AINCOM/P0  
CS  
5 V Analog Supply  
3 V or 5 V Digital Supply  
Package: 28-Lead TSSOP  
RDY  
CLOCK  
GENERATOR  
CONTROL  
LOGIC  
I/O PORT  
SYNC/P1  
RESET  
APPLICATIONS  
PLCs/DCS  
Multiplexing Applications  
Process Control  
AGND AV  
MCLKOUT  
MCLKIN  
DGND DV  
DD  
DD  
Industrial Instrumentation  
GENERAL DESCRIPTION  
The differential reference input features “No-Reference” detect  
capability. The ADC also supports per channel system calibra-  
tion options.  
The AD7738 is a high precision, high throughput analog front  
end. True 16-bit p-p resolution is achievable with a total con-  
version time of 117 µs (8.5 kHz channel switching), making it  
ideally suitable for high resolution multiplexing applications.  
The digital serial interface can be configured for 3-wire opera-  
tion and is compatible with microcontrollers and digital signal  
processors. All interface inputs are Schmitt triggered.  
The part can be configured via a simple digital interface, which  
allows users to balance the noise performance against data  
throughput up to a 15.4 kHz.  
The part is specified for operation over the extended industrial  
temperature range of –40ꢃC to +105ꢃC.  
The analog front end features eight single-ended or four fully  
differential input channels with unipolar or bipolar 625 mV,  
1.25 V, and 2.5 V input ranges and accepts a common-mode  
input voltage from 200 mV above AGND to AVDD – 300 mV.  
The multiplexer output is pinned out externally, allowing the  
user to implement programmable gain or signal conditioning  
before applying the input to the ADC.  
Other parts in the AD7738 family are the AD7734 and the  
AD7732.  
The AD7734 analog front end features four single-ended input  
channels with unipolar or true bipolar input ranges to 10 V  
while operating from a single 5 V analog supply. The AD7734  
accepts an analog input overvoltage to 16.5 V while not  
degrading the performance of the adjacent channels.  
The AD7732 is similar to AD7734, but its analog front end  
features two fully differential input channels.  
SPI and QSPI are trademarks of Motorola, Inc.  
MICROWIRE is a trademark of National Semiconductor Corporation  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© Analog Devices, Inc., 2002  
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AD7738BRU-REEL7 替代型号

型号 品牌 替代类型 描述 数据表
AD7738BRU ADI

完全替代

 8-Channel, High Throughput,
AD7738BRUZ ADI

类似代替

 8-Channel, High Throughput, 24-Bit - ADC

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AD773A ADI

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 		10-Bit, 20 MSPS Monolithic A/D Converter
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