ADUM7703集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

ADUM7703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ADUM7703ADC/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 ADuM7703 is a high performance, second-order, Σ-Δ analog-

to-digital converter (ADC) with an integrated low dropout (LDO) regulator 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

device operates from a 4.5 V to 20 V power supply range (VDD1)

and accepts a pseudo differential input signal of ±250 mV

(±320 mV full-scale). The pseudo differential input is ideally suited to shunt voltage monitoring in high voltage applications where galvanic isolation is required.

The analog input is continuously sampled by a high performance analog modulator and converted to a ones density digital output stream with a data rate of up to 21 MHz. The original information

can be reconstructed with an appropriate sinc3 digital filter to

achieve an 86 dB signal-to-noise ratio (SNR) at 78.1 kSPS with a

256 decimation rate and a 20 MHz master clock. The serial

input and output operates from a 5 V or a 3.3 V supply (VDD2).

The serial interface is digitally isolated. High speed complementary metal-oxide semiconductor (CMOS) technology, combined with monolithic transformer technology, results in the on-chip isolation

providing outstanding performance characteristics, superior to alternatives such as optocoupler devices. The ADuM7703 device is available in a 16-lead, wide-body SOIC with an operating

temperature range of −40°C to +125°C and an 8-lead, wide-body

SOIC with an operating temperature range of −40°C to +105°C.