전자부품 데이터시트 검색엔진 |
|
AD7172-2BRUZ 데이터시트(PDF) 1 Page - Analog Devices |
|
AD7172-2BRUZ 데이터시트(HTML) 1 Page - Analog Devices |
1 / 61 page Low Power, 24-Bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers Data Sheet AD7172-2 Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2014–2016 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Fast and flexible output rate: 1.25 SPS to 31.25 kSPS Channel scan data rate of 6.21 kSPS/channel (161 µs settling) Performance specifications 17.2 noise free bits at 31.25 kSPS 24 noise free bits at 5 SPS INL: ±2 ppm of FSR 85 dB rejection of 50 Hz and 60 Hz with 50 ms settling User configurable input channels 2 fully differential channels or 4 single-ended channels Crosspoint multiplexer On-chip 2.5 V reference (±2 ppm/°C drift) True rail-to-rail analog and reference input buffers Internal or external clock Power supply AVDD1 = 3.0 V to 5.5 V, AVDD2 = IOVDD = 2 V to 5.5 V Split supply with AVDD1 and AVSS at ±2.5 V or ±1.65 V ADC current: 1.5 mA Temperature range: −40°C to +105°C 3- or 4-wire serial digital interface (Schmitt trigger on SCLK) Serial port interface (SPI), QSPI-, MICROWIRE-, and DSP- compatible APPLICATIONS Process control: PLC/DCS modules Temperature and pressure measurement Medical and scientific multichannel instrumentation Chromatography GENERAL DESCRIPTION The AD7172-2 is an intelligent, low noise, low power, multiplexed, Σ-Δ analog-to-digital converter (ADC) with 2- or 4-channel (fully differential/single-ended) inputs for low bandwidth signals. The AD7172-2 has a maximum channel scan rate of 6.21 kSPS (161 µs) for fully settled data. The output data rates range from 1.25 SPS to 31.25 kSPS. The AD7172-2 integrates key analog and digital signal condition- ing blocks to allow users to configure an individual setup for each analog input channel in use via the SPI. Integrated true rail-to-rail buffers on the analog inputs and external reference inputs provide easy to drive high impedance inputs. The precision 2.5 V low drift (2 ppm/°C) band gap internal reference (with an output reference buffer) adds embedded functionality to reduce the external component count. The digital filter allows simultaneous 50 Hz and 60 Hz rejection at a 27.27 SPS output data rate. The user can switch between different filter options according to the demands of each channel in the application, with further digital processing functions such as offset and gain calibration registers, which are also configurable on a per channel basis. General-purpose inputs/outputs (GPIOs) control external multiplexers synchronous to the ADC conversion timing. The specified operating temperature range is −40°C to +105°C. The AD7172-2 is in a 24-lead TSSOP package. Note that, throughout this data sheet, the dual function pin names are referenced by the relevant function only. FUNCTIONAL BLOCK DIAGRAM AVSS GPIO0 GPIO1 XTAL1 XTAL2/CLKIO DGND REF– AVDD1 AVSS REF+ REFOUT AIN0 AIN1 AIN2 AIN3 AIN4 Σ-Δ ADC 1.8V LDO INT REF AVDD1 AVDD2 REGCAPA 1.8V LDO IOVDD REGCAPD GPIO AND MUX I/O CONTROL SERIAL INTERFACE AND CONTROL TEMPERATURE SENSOR DIGITAL FILTER AD7172-2 BUFFERED PRECISION REFERENCE XTAL AND INTERNAL CLOCK OSCILLATOR CIRCUITRY CS SCLK DIN DOUT/RDY SYNC/ERROR CROSSPOINT MULTIPLEXER AVDD AVSS RAIL-TO-RAIL ANALOG INPUT BUFFERS RAIL-TO-RAIL REFERENCE INPUT BUFFERS Figure 1. |
유사한 부품 번호 - AD7172-2BRUZ |
|
유사한 설명 - AD7172-2BRUZ |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |