AD7400A集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

AD7400A属于集成电路（IC）的ADC/DAC-特殊用途。由亚德诺半导体技术有限公司制造生产的AD7400AADC/DAC - 特殊用途该产品族中的产品可用于模拟和数字表示的信息转换，适用于特定用例，或集成了通用数据转换器中不常见的其他功能。例如针对超声或汽车雷达应用集成了低噪声放大器和可变增益级的器件、注重音频和视频的产品、在段码式显示器上集成显示测量值功能的器件、集成输入输出电气隔离的器件等。

GENERAL DESCRIPTION

The AD7400A1 is a second-order, Σ-Δ modulator that converts

an analog input signal into a high speed, 1-bit data stream with on-chip digital isolation based on Analog Devices, Inc., iCoupler® technology. The AD7400A operates from a 5 V power supply and accepts a differential input signal of ±250 mV (±320 mV

full-scale). The analog input is sampled continuously by the

analog modulator, eliminating the need for external sample-

and-hold circuitry. The input information is contained in the

output stream as a density of ones with a data rate of 10 MHz.

The original information can be reconstructed with an appropriate

digital filter. The serial I/O can use a 5 V or a 3 V supply (VDD2).

The serial interface is digitally isolated. High speed CMOS,

combined with monolithic air core transformer technology, means the on-chip isolation provides outstanding performance characteristics superior to alternatives such as optocoupler devices. The part contains an on-chip reference and has an

operating temperature range of −40°C to +125°C. The AD7400A

is offered in a 16-lead SOIC package.

FEATURES 10 MHz clock rate Second-order modulator

16 bits, no missing codes

±2 LSB INL typical at 16 bits 1.5 μV/°C typical offset drift On-board digital isolator On-board reference ±250 mV analog input range Low power operation: 15.5 mA typical at 5.5 V −40°C to +125°C operating range

16-lead SOIC package

AD7401A, external clock version in 16-lead SOIC

Safety and regulatory approvals 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 = 891 V peak

APPLICATIONS

AC motor controls

Shunt current monitoring

Data acquisition systems Analog-to-digital and opto-isolator replacements