Datasheet > ADFS7124-8

ADFS7124-8

更新时间： 2024-11-26 15:18:59

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
93页	2074K
描述
具有 PGA 和参考的 8 通道、低噪声、低功耗、24 位 Σ-Δ ADC

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ADFS7124-8 数据手册

Data Sheet

ADFS7124-8

8-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and

Reference

► Matched programmable excitation currents

FEATURES

► Internal clock oscillator

► On-chip bias voltage generator

► Low-side power switch

► Functional safety approved to SC3 by TÜV Rheinland, File

Number 968/FSP 2188.01/23

► 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 +125°C

► 32-lead LFCSP

► Three 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)

► 3-wire or 4-wire serial interface

™

► SPI, QSPI , MICROWIRE , and DSP compatible

► Schmitt trigger on SCLK

► ESD: 4 kV

APPLICATIONS

► Diagnostic functions (which aid safe integrity level (SIL) certifica-

tion)

► Crosspoint multiplexed analog inputs

► 8 differential/15 pseudodifferential inputs

► Programmable gain (1 to 128)

► Temperature measurement

► Pressure measurement

► Industrial process control

► Instrumentation

► Band gap reference with 15 ppm/°C drift maximum (70 µA)

FUNCTIONAL BLOCK DIAGRAM

► Smart transmitters

Figure 1. Functional Block Diagram

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog

Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its 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 and

registered trademarks are the property of their respective owners.

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