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MAX549A：+2.5V至+5.5V、低功耗、单/双路、8位、电压输出DAC，µMAX封装

双路、串行、电压输出DAC，采用µMAX封装

The MAX548A/MAX549A/MAX550A serial, 8-bit voltage-output digital-to-analog converters (DACs) operate from a single +2.5V to +5.5V supply. Their ±1LSB TUE specification is guaranteed over temperature. Operating current (supply current plus reference current) is typically 75µA per DAC with VDD = 2.5V. In shutdown, the DAC is disconnected from the reference, reducing current drain to less than 1µA. The MAX548A/MAX549A allow each DAC to be shut down independently. The 10MHz, 3-wire serial interface is compatible with SPI™/QSPI™ and Microwire™ interface standards. Double-buffered inputs provide flexibility when updating the DACs; the input and DAC registers can be updated individually or simultaneously. The MAX548A is a dual DAC with an asynchronous load input; it uses VDD as the reference input. The MAX549A is a dual DAC with an external reference input. The MAX550A is a single DAC with an external reference input and an asynchronous load input. The MAX548A/MAX549A/MAX550A's low power consumption and small µMAX® and DIP packages make these devices ideal for portable and battery-powered applications.

关键特性 +2.5V to +5.5V Single-Supply Operation ±1LSB (max) TUE Power-On Reset Clears All Registers to Zero Low Operating Current: 150µA (MAX548A/MAX549A, VREF = +2.5V) 75µA (MAX550A, VREF = +2.5V) 1µA Shutdown Mode 10MHz, 3-Wire Serial Interface Compatible with SPI/QSPI and Microwire µMAX Package-50% Smaller than 8-Pin SO Independent Shutdown of DACs (MAX548A/MAX549A)

MAX548A、MAX549A、MAX550A：功能框图 应用 电池供电应用 比较器电平设置 数字增益与失调控制 GaAs放大器偏置控制 通用产品 VCXO控制

数据手册DataSheet

关键参数

质量和环境数据

• MAX549A.pdf

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