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AD7173-8BCPZ

更新时间： 2024-11-24 12:36:31
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亚德诺 - ADI /
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64页 1089K
描述
Low Power, 8-/16-Channel, 31.25 kSPS, 24-Bit, Highly Integrated Sigma-Delta ADC

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AD7173-8BCPZ 数据手册

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Low Power, 8-/16-Channel, 31.25 kSPS,  
24-Bit, Highly Integrated Sigma-Delta ADC  
AD7173-8  
Data Sheet  
APPLICATIONS  
FEATURES  
Process control: PLC/DCS modules  
Voltage, current, temperature, and pressure measurement  
Flow meters  
Low power, 8-/16-channel, highly integrated multiplexed  
analog-to-digital converter (ADC)  
Integration  
Medical and scientific multichannel instrumentation  
Seismic instrumentation  
Chemical analysis instrumentation: chromatography  
Precision analog input buffers and reference input buffers  
2.5 V precision reference (3.5 ppm/°C)  
Cross point multiplexer (enable system diagnostic)  
8 full differential or 16 single-ended channels  
Clock oscillator  
GPIO and GPO pins with automatic external mux control  
Fast and flexible output rate: 1.25 SPS to 31.25 kSPS  
Channel scan data rate: 6.21 kSPS/channel (161 µs settling)  
Performance specifications  
GENERAL DESCRIPTION  
Fast settling, highly accurate, low power, 8-/16-channel,  
multiplexed ADC for low bandwidth input signals with  
integrated input buffers.  
Integrated precision, 2.5 V, low drift (3.5 ppm/°C), band gap  
reference and integrated oscillator.  
17.5 noise free bits at 31.25 kSPS  
24 noise free bits at 1.25 SPS  
INL: 3 ppm/FSR  
Eight flexible setups with configurability for output data rate,  
digital filter mode, offset/gain error correction, reference  
selection, buffer enables and more.  
85 dB rejection of 50 Hz and 60 Hz with 50 ms settling  
Operates with either 3.3 V or5 V supply  
Single supply  
3.3 V or 5 V AVDD1, 2 V to 5 V AVDD2, and 2 V to 5 V IOVDD  
Optional split supply  
Sinc5 + sinc1 filter maximizes channel scan rate, and sinc3 filter  
maximizes resolution and enhanced 50 Hz/60 Hz rejection,  
with four selectable options to maximize rejection.  
Integrated diagnostic features, including CRC, register checksum,  
temperature sensor, crosspoint multiplexer, burnout currents,  
and GPIOs/GPOs.  
AVDD1 and AVSS 2.5 V or AVDD1 and AVSS 1.65 V  
Current: 1.4 mA  
3-/4-wire serial digital interface (Schmitt trigger on SCLK)  
CRC error checking  
SPI, QSPI, MICROWIRE, and DSP compatible  
Package: 40-lead 6 mm × 6 mm LFCSP  
Temperature range: −40°C to +105°C  
FUNCTIONAL BLOCK DIAGRAM  
AVDD1 AVDD2 REGCAPA  
REF– REF+ REFOUT  
IOVDD REGCAPD  
BUFFERED  
1.8V  
LDO  
1.8V  
LDO  
PRECISION  
REFERENCE  
REFERENCE  
CROSSPOINT  
MULTIPLEXER  
INPUT  
BUFFERS  
INT  
REF  
AIN0/REF2–  
AIN1/REF2+  
AVDD  
ANALOG  
INPUT  
BUFFERS  
CS  
SCLK  
DIN  
SERIAL  
INTERFACE  
AND CONTROL  
DIGITAL  
FILTER  
Σ-Δ ADC  
DOUT/RDY  
SYNC  
ERROR  
AIN15  
AIN16  
XTAL AND INTERNAL  
CLOCK OSCILLATOR  
CIRCUITRY  
AVSS  
I/O CONTROL  
AD7173-8  
TEMPERATURE  
SENSOR  
AVSS  
PDSW  
GPIO0 GPIO1 GPIO2 GPIO3  
XTAL1 XTAL2/CLKIO  
DGND  
Figure 1.  
Rev. 0  
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  
Technical Support  
©2013 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
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AD7173-8BCPZ 替代型号

型号 品牌 替代类型 描述 数据表
AD7173-8BCPZ-RL ADI

完全替代

 Low Power, 8-/16-Channel, 31.25 kSPS, 24-Bit, Highly Integrated Sigma-Delta ADC

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