器件名称:
AD7403
功能描述:
通过将模拟信号转换成1位数据流（其最高时钟频率可达20 MHz），实现分流电阻两端的电压测量。在较高直流总线电压功率转换和电机驱动应用中，设计师可以借助更高的隔离工作电压（峰值为1250 V）替代精度较低、成本更高的霍尔效应传感器。
文件大小:
364.82KB 共20页
简 介:
Data Sheet FEATURES 16-Bit, Isolated Sigma-Delta Modulator AD7403 FUNCTIONAL BLOCK DIAGRAM VDD1 VDD2 5 MHz to 20 MHz external clock input rate 16 bits, no missing codes Signal-to-noise ratio (SNR): 88 dB typical Effective number of bits (ENOB): 14.2 bits typical Typical offset drift vs. temperature: 1.6 V/°C typical On-board digital isolator On-board reference Full-scale analog input range: ±320 mV 40°C to + 125°C operating range High common-mode transient immunity: >25 kV/s 16-lead, wide-body SOIC, with increased creepage package Slew rate limited output for low electromagnetic interference (EMI) Safety and regulatory approvals (pending) UL recognition 5000 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice 5A VDE Certificate of Conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM = 1250 VPEAK BUF CLK DECODER CLK ENCODER REF VIN+ VIN– Σ-Δ ADC DATA ENCODER CLK DECODER MCLKIN (5MHz TO 20MHz) MDAT AD7403 12196-001 GND1 GND2 Figure 1. APPLICATIONS Shunt current monitoring AC motor controls Power and solar inverters Wind turbine inverters Data acquisition systems Analog-to-digital and opto-isolator replacements GENERAL DESCRIPTION The AD74031 is a high performance, second-order, Σ-Δ modulator that converts an analog input signal into a high speed, single-bit data stream, with on-chip digital isolation based on Analog Devices, Inc., iCoupler technology. The AD7403 operates from a 5 V (VDD1) power supply and accepts a differential input signal of ±……
