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General Description

The MAX5175/MAX5177 low-power, serial, voltage-output, 12-bit digital-to-analog converters (DACs) feature a precision output amplifier in a space-saving 16-pin QSOP package. The MAX5175 operates from a single +5V supply, and the MAX5177 operates from a single +3V supply. The output amplifier’s inverting input is available to allow specific gain configurations, remote sensing, and high output current capability. This makes the MAX5175/MAX5177 ideal for a wide range of applications, including industrial process control. Both devices draw only 260μA of supply current, which reduces to 1μA in shutdown mode. In addition, the programmable power-up reset feature allows for a user selectable output voltage state of either 0 or midscale.

Features

? ±1 LSB INL

? 1μA Shutdown Current

? “Glitch Free” Output Voltage at Power-Up

? Single-Supply Operation

??? +5V (MAX5175)

??? +3V (MAX5177)

? Full-Scale Output Range

??? +2.048V (MAX5177, VREF = +1.25V)

??? +4.096V (MAX5175, VREF = +2.5V)

? Rail-to-Rail? Output Amplifier

? Adjustable Output Offset

? Low THD (-80dB) in Multiplying Operation

? SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface

? Programmable Shutdown Mode and Power-Up Reset (0 or midscale)

? Buffered Output Capable of Driving 4–20mA or 5k? || 100pF Loads

? User-Programmable Digital Output Pin Allows Serial Control of External Components

? 14-Bit Upgrades Available (MAX5171/MAX5173)

Applications

??? Digitally Programmable 4–20mA Current Loops

??? Industrial Process Controls

??? Digital Offset and Gain Adjustment

??? Motion Control

??? Automatic Test Equipment (ATE)

??? Remote Industrial Controls

??? μP-Controlled Systems