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 5kΩ || 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