ADUM7703BRWZ集成電路（IC）的ADC/DAC-特殊用途規(guī)格書PDF中文資料

ADUM7703BRWZ屬于集成電路（IC）的ADC/DAC-特殊用途。由亞德諾半導體技術(shù)有限公司制造生產(chǎn)的ADUM7703BRWZADC/DAC - 特殊用途該產(chǎn)品族中的產(chǎn)品可用于模擬和數(shù)字表示的信息轉(zhuǎn)換，適用于特定用例，或集成了通用數(shù)據(jù)轉(zhuǎn)換器中不常見的其他功能。例如針對超聲或汽車雷達應用集成了低噪聲放大器和可變增益級的器件、注重音頻和視頻的產(chǎn)品、在段碼式顯示器上集成顯示測量值功能的器件、集成輸入輸出電氣隔離的器件等。

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.