General Description

The MAX5188 is a dual 8-bit, alternate-phase-update, current-output digital-to-analog converter (DAC) designed for superior performance in systems requiring analog signal reconstruction with low distortion and low-power operation. The MAX5191 provides equal specifications, with on-chip output resistors for voltage output operation. Both devices are designed for 10pVs glitch operation to reduce distortion and minimize unwanted spurious signal components at the output. An on-board +1.2V bandgap circuit provides a well-regulated, low-noise reference that may be disabled for external reference operation.

The MAX5188/MAX5191 are designed to provide a high level of signal integrity for the least amount of power dissipation. Both DACs operate from a +2.7V to +3.3V single supply. Additionally, these DACs have three modes of operation: normal, low-power standby, and full shutdown. A full shutdown provides the lowest possible power dissipation with a maximum shutdown current of 1μA. A fast wake-up time (0.5μs) from standby mode to full DAC operation allows for power conservation by activating the DACs only when required.

特性 Features

? +2.7V to +3.3V Single-Supply Operation

? Wide Spurious-Free Dynamic Range: 70dB at fOUT = 2.2MHz

? Fully Differential Outputs for Each DAC

? ±0.5 FSR Gain Mismatch Between DAC Outputs

? Low-Current Standby or Full Shutdown Modes

? Internal +1.2V Low-Noise Bandgap Reference

? Small 28-Pin QSOP Package

Applications

? Signal Reconstruction Applications

? Digital Signal Processing

? Arbitrary Waveform Generators

? Imaging Applications

?