AD420屬于集成電路（IC）的數(shù)模轉(zhuǎn)換器（DAC）。由亞德諾半導體技術有限公司制造生產(chǎn)的AD420數(shù)模轉(zhuǎn)換器（DAC）數(shù)模轉(zhuǎn)換器（DAC、D/A、D2A 或 D 轉(zhuǎn) A）可將數(shù)字信號轉(zhuǎn)換為緩沖或無緩沖的模擬電壓或電流。DAC 架構是否適合特定應用，要取決于分辨率和采樣頻率。DAC 通常用于音樂播放器，將數(shù)字數(shù)據(jù)流轉(zhuǎn)換為模擬音頻流。它們還用于電視和手機，將數(shù)字視頻數(shù)據(jù)轉(zhuǎn)換為模擬視頻信號，再連接到屏幕驅(qū)動器，以顯示單色或彩色圖像。

GENERAL DESCRIPTION

The AD420 is a complete digital to current loop output converter, designed to meet the needs of the industrial control market. It provides a high precision, fully integrated, low cost single-chip solution for generating current loop signals in a compact 24-lead SOIC or PDIP package.

FEATURES

4 mA–20 mA, 0 mA–20 mA or 0 mA–24 mA

current output

16-bit resolution and monotonicity

±0.012 max integral nonlinearity

±0.05 max offset (trimmable)

±0.15 max total output error (trimmable)

Flexible serial digital interface (3.3 MBPS)

On-Chip loop fault detection

On-chip 5 V reference (25 ppm/°C max)

Asynchronous CLEAR function

Maximum power supply range of 32 V

Output loop compliance of 0 V to VCC ? 2.75 V

24-Lead SOIC and PDIP packages