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AD7124-4BRUZ-RL データシート(PDF) 1 Page - Analog Devices |
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AD7124-4BRUZ-RL データシート(HTML) 1 Page - Analog Devices |
1 / 90 page 4-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference Data Sheet AD7124-4 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 ©2015 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 3 power modes RMS noise Low power: 24 nV rms at 1.17 SPS, gain = 128 (255 µA typical) Mid power: 20 nV rms at 2.34 SPS, gain = 128 (355 µA typical) Full power: 23 nV rms at 9.4 SPS, gain = 128 (930 µA typical) Up to 22 noise free bits in all power modes (gain = 1) Output data rate Full power: 9.38 SPS to 19,200 SPS Mid power: 2.34 SPS to 4800 SPS Low power: 1.17 SPS to 2400 SPS Rail-to-rail analog inputs for gains > 1 Simultaneous 50 Hz/60 Hz rejection at 25 SPS (single cycle settling) Diagnostic functions (which aid safe integrity level (SIL) certification) Crosspoint multiplexed analog inputs 4 differential/7 pseudo differential inputs Programmable gain (1 to 128) Band gap reference with 15 ppm/°C drift maximum (65 µA) Matched programmable excitation currents Internal clock oscillator On-chip bias voltage generator Low-side power switch General-purpose outputs Multiple filter options Internal temperature sensor Self and system calibration Sensor burnout detection Automatic channel sequencer Per channel configuration Power supply: 2.7 V to 3.6 V and ±1.8 V Independent interface power supply Power-down current: 5 µA maximum Temperature range: −40°C to +105°C 32-lead LFCSP/24-lead TSSOP 3-wire or 4-wire serial interface SPI, QSPI, MICROWIRE, and DSP compatible Schmitt trigger on SCLK ESD: 4 kV APPLICATIONS Temperature measurement Pressure measurement Industrial process control Instrumentation Smart transmitters FUNCTIONAL BLOCK DIAGRAM Figure 1. TEMPERATURE SENSOR BANDGAP REF VBIAS SERIAL INTERFACE AND CONTROL LOGIC INTERNAL CLOCK CLK SCLK DIN SYNC REGCAPD IOVDD AD7124-4 AVSS DGND 24-BIT Σ-Δ ADC X-MUX REFIN1(+) AVDD AVSS REFOUT AVDD AVSS PSW VARIABLE DIGITAL FILTER DIAGNOSTICS COMMUNICATIONS POWER SUPPLY SIGNAL CHAIN DIGITAL REFIN1(–) REFIN2(+) REFIN2(–) BURNOUT DETECT EXCITATION CURRENTS POWER SWITCH GPOs CHANNEL SEQUENCER CROSSPOINT MUX REGCAPA AVDD 1.9V LDO DIAGNOSTICS AVDD AVSS AVSS DOUT/RDY CS 1.8V LDO ANALOG BUFFERS REFERENCE BUFFERS BUF BUF PGA2 PGA1 AIN0/IOUT/VBIAS AIN1/IOUT/VBIAS AIN2/IOUT/VBIAS/P1 AIN3/IOUT/VBIAS/P2 AIN4/IOUT/VBIAS AIN5/IOUT/VBIAS AIN6/IOUT/VBIAS/REFIN2(+) AIN7/IOUT/VBIAS/REFIN2(–) |
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同様の説明 - AD7124-4BRUZ-RL |
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