LTC1426集成電路（IC）的數(shù)模轉(zhuǎn)換器（DAC）規(guī)格書(shū)PDF中文資料

LTC1426屬于集成電路（IC）的數(shù)模轉(zhuǎn)換器（DAC）。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的LTC1426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(hào)轉(zhuǎn)換為緩沖或無(wú)緩沖的模擬電壓或電流。DAC 架構(gòu)是否適合特定應(yīng)用，要取決于分辨率和采樣頻率。DAC 通常用于音樂(lè)播放器，將數(shù)字?jǐn)?shù)據(jù)流轉(zhuǎn)換為模擬音頻流。它們還用于電視和手機(jī)，將數(shù)字視頻數(shù)據(jù)轉(zhuǎn)換為模擬視頻信號(hào)，再連接到屏幕驅(qū)動(dòng)器，以顯示單色或彩色圖像。

DESCRIPTION

The LTC?1426 is a dual micropower 6-bit PWM DAC featuring versatile PWM outputs and a flexible pushbutton compatible digital interface. The DAC outputs provide a PWM signal that swings from 0V to VREF, allowing the full-scale output to be varied by adjusting the voltage at VREF. The PWM output frequency is typically 5kHz, easing output filtering requirements. VCC supply current is typically 50μA and drops to 0.2μA in shutdown.

FEATURES

■ Wide Supply Range: 2.7V ≤ VCC ≤ 5.5V

■ Wide Reference Voltage Range: 0V to 5.5V

■ Two Interface Modes:

Pulse Mode (Increment Only)

Pushbutton Mode (Increment/Decrement)

■ Low Supply Current: 50μA

■ 0.2μA Supply Current in Shutdown

■ Available in 8-Pin MSOP and SO Packages

■ DAC Contents Are Retained in Shutdown

■ DACs Power-Up at Midrange

■ Low Output Impedance: <100Ω

■ Output Frequency: 5kHz Typ

APPLICATIONS

■ LCD Contrast and Backlight Brightness Control

■ Power Supply Voltage Adjustment

■ Battery Charger Voltage and Current Adjustment

■ GaAs FET Bias Adjustment

■ Trimmer Pot Elimination