LTC1426是Micropower Dual 6-Bit PWM DAC

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LTC1426 - LTC1426是Micropower Dual 6-Bit PWM DAC

LTC1426是Linear公司的一款特别功能 DAC产品，LTC1426是Micropower Dual 6-Bit PWM DAC，本站介绍了LTC1426的封装应用图解、特点和优点、功能等，并给出了与LTC1426相关的凌力尔特元器件型号供参考。

LTC1426 - Micropower Dual 6-Bit PWM DAC

LTC1426 - Micropower Dual 6-Bit PWM DAC - Linear Technology（凌力尔特）

功能描述

The LTC1426 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. The LTC1426 can be controlled using one of two interface modes: pushbutton and pulse. The LTC1426 automatically configures itself into the appropriate mode at start-up by monitoring the state of the CLK pins. In pushbutton mode, the CLK pins can be directly connected to external pushbuttons to control the DAC output. In pulse mode, the CLK pins can be connected to CMOS compatible logic. The DAC outputs initially power up at half scale and the contents of the internal DAC registers are retained in shutdown. The LTC1426 is available in 8-pin MSOP and SO packages.

特点

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: <100 ohms

Output Frequency: 5kHz Typ

应用

LCD Contrast and Backlight Brightness Control

Power Supply Voltage Adjustment

Battery Charger Voltage and Current Adjustment

GaAs FET Bias Adjustment

Trimmer Pot Elimination

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1426CMS8	MS-8	C	$4.35	$3.75
LTC1426CMS8#PBF	MS-8	C	$4.35	$3.75
LTC1426CMS8#TR	MS-8	C		$3.81
LTC1426CMS8#TRPBF	MS-8	C		$3.81
LTC1426CS8	SO-8	C	$4.15	$3.50
LTC1426CS8#PBF	SO-8	C	$4.15	$3.50
LTC1426CS8#TR	SO-8	C		$3.56
LTC1426CS8#TRPBF	SO-8	C		$3.56
LTC1426IS8	SO-8	I	$4.85	$4.05
LTC1426IS8#PBF	SO-8	I	$4.85	$4.05
LTC1426IS8#TR	SO-8	I		$4.11
LTC1426IS8#TRPBF	SO-8	I		$4.11