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