General Description

The MAX5138/MAX5139 are a family of single-channel pin-compatible and software-compatible 16-bit and 12- bit DACs. The MAX5138/MAX5139 are low-power, 16- bit/12-bit, buffered voltage-output, high-linearity DACs. They use a precision internal reference or a precision external reference for rail-to-rail operation. The MAX5138/MAX5139 accept a wide +2.7V to +5.25V supply-voltage range to accommodate most low-power and low-voltage applications. These devices accept a 3-wire SPI-/QSPITM-/MICROWIRE®-/DSP-compatible serial interface to save board space and reduce the complexity of optically isolated and transformer-isolated applications.

Features

♦ 16-/12-Bit Resolution in a 3mm x 3mm, 16-Pin TQFN Package

♦ Hardware-Selectable on Power-Up or Reset-toZero/Midscale DAC Output

♦ Double-Buffered Input Registers

♦ LDAC Asynchronously Updates DAC Output

♦ READY Facilitates Daisy Chaining

♦ High-Performance 10ppm/°C Internal Reference

♦ Guaranteed Monotonic Over All Operating Conditions

♦ Wide +2.7V to +5.25V Supply Range

♦ Rail-to-Rail Buffered Output Operation

♦ Low Gain Error (Less Than ±0.5 FS) and Offset (Less Than ±10mV)

♦ 30MHz 3-Wire SPI-/QSPI-/MICROWIRE-/ DSP-Compatible Serial Interface

♦ CMOS-Compatible Inputs with Hysteresis

♦ Low Power Consumption (ISHDN = 2µA max)

Applications

    Automatic Test Equipment

    Automatic Tuning

    Communication Systems

    Data Acquisition

    Gain and Offset Adjustment

    Portable Instrumentation

    Power-Amplifier Control

    Process Control and Servo Loops

    Programmable Voltage and Current Sources