The DAC7551 is a single-channel, voltage-output digital-to-analog converter (DAC) with exceptional linearity and monotonicity, and a proprietary architecture that minimizes glitch energy. The low-power DAC7551 operates from a single 2.7V to 5.5V supply. The DAC7551 output amplifiers can drive a 2kOhm, 200pF load rail-to-rail with 5us settling time; the output range is set using an external voltage reference.
The 3-wire serial interface operates at clock rates up to 50MHz and is compatible with SPITM, QSPITM, MicrowireTM, and DSP interface standards. The parts incorporate a power-on-reset circuit to ensure that the DAC output powers up to 0V and remains there until a valid write cycle to the device takes place.
DAC7551 特性
Relative Accuracy (INL): ±0.35LSB
Ultra-Low Glitch Energy: 0.1nV-s
Low Power Operation: 100uA at 2.7V
Power-On Reset to Zero Scale
Power Supply: 2.7V to 5.5V Single Supply
Power-Down: 0.05uA at 2.7V
12-Bit Linearity and Monotonicity
Rail-to-Rail Voltage Output
Settling Time: 5us (Max)
SPI-Compatible Serial Interface with Schmitt-Trigger Input: Up to 50MHz