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AD7193BCPZ-RL PDF预览

AD7193BCPZ-RL

更新时间: 2024-11-24 19:02:39
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
57页 1100K
描述
4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA

AD7193BCPZ-RL 数据手册

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4-Channel, 4.8 kHz, Ultralow Noise,  
24-Bit Sigma-Delta ADC with PGA  
AD7193  
Data Sheet  
Pressure measurement  
Temperature measurement  
Flow measurement  
Weigh scales  
Chromatography  
FEATURES  
Fast settling filter option  
4 differential/8 pseudo differential input channels  
RMS noise: 11 nV @ 4.7 Hz (gain = 128)  
15.5 noise-free bits @ 2.4 kHz (gain = 128)  
Up to 22 noise-free bits (gain = 1)  
Offset drift: 5 nV/°C  
Gain drift: 1 ppm/°C  
Specified drift over time  
Automatic channel sequencer  
Programmable gain (1 to 128)  
Output data rate: 4.7 Hz to 4.8 kHz  
Internal or external clock  
Medical and scientific instrumentation  
GENERAL DESCRIPTION  
The AD7193 is a low noise, complete analog front end for high  
precision measurement applications. It contains a low noise,  
24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC).  
The on-chip low noise gain stage means that signals of small  
amplitude can interface directly to the ADC.  
The device can be configured to have four differential inputs or  
eight pseudo differential inputs. The on-chip channel sequencer  
allows several channels to be enabled simultaneously, and the  
AD7193 sequentially converts on each enabled channel, simplifying  
communication with the part. The on-chip 4.92 MHz clock can  
be used as the clock source to the ADC or, alternatively, an external  
clock or crystal can be used. The output data rate from the part  
can be varied from 4.7 Hz to 4.8 kHz.  
Simultaneous 50 Hz/60 Hz rejection  
4 general-purpose digital outputs  
Power supply  
AVDD: 3 V to 5.25 V  
DVDD: 2.7 V to 5.25 V  
Current: 4.65 mA  
Temperature range: −40°C to +105°C  
28-lead TSSOP and 32-lead LFCSP packages  
Interface  
3-wire serial  
SPI, QSPI™, MICROWIRE™, and DSP compatible  
Schmitt trigger on SCLK  
The device has a very flexible digital filter, including a fast  
settling option. Variables such as output data rate and settling  
time are dependent on the option selected. The AD7193 also  
includes a zero latency option.  
APPLICATIONS  
The part operates with a power supply from 3 V to 5.25 V. It  
consumes a current of 4.65 mA, and it is available in a 28-lead  
TSSOP package and a 32-lead LFCSP package.  
PLC/DCS analog input modules  
Data acquisition  
Strain gage transducers  
FUNCTIONAL BLOCK DIAGRAM  
AV  
AGND  
DV  
DGND  
REFIN1(+) REFIN1(–)  
DD  
DD  
AD7193  
AIN1  
AIN2  
AIN3  
AIN4  
AIN5  
AIN6  
AIN7  
AIN8  
DOUT/RDY  
SERIAL  
INTERFACE  
AND  
CONTROL  
LOGIC  
MUX  
DIN  
Σ-Δ  
ADC  
PGA  
SCLK  
CS  
AINCOM  
SYNC  
TEMP  
SENSOR  
P3  
P2  
BPDSW  
CLOCK  
CIRCUITRY  
AGND  
MCLK1 MCLK2  
P0/REFIN2(–) P1/REFIN2(+)  
Figure 1.  
Rev. E  
Document Feedback  
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  
rightsof third parties that may result fromits 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 andregisteredtrademarks 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 ©2009–2017 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 

AD7193BCPZ-RL 替代型号

型号 品牌 替代类型 描述 数据表
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4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
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