MAXIM MAX5541CSA+

The MAX5541 voltage-output, 16-bit digital-to-analog converter (DAC) offers 16-bit monotonicity with less than 1LSB differential linearity error. Serial-data transfer minimizes the number of package pins required. The MAX5541 is composed of two matched DAC sections, with a 12-bit inverted R-2R DAC forming the twelve LSBs and the four MSBs derived from fifteen identically matched resistors. This architecture allows the lowest glitch energy to be transferred to the DAC output on major-carry transitions. It also decreases the DAC output impedance by a factor of eight compared to a standard R-2R ladder, allowing unbuffered operation in medium-load applications. The MAX5541 digital interface is a standard 3-wire connection compatible with SPI/QSPI/MICROWIRE interfaces. The chip-select input (CS) frames the serial data loading at the data input pin (DIN). Immediately following CSs high-to-low transition, the data is shifted synchronously and latched into the input register on the rising edge of the serial-clock input (SCLK). After 16 data bits have been loaded into the serial input register, it transfers its contents to the DAC latch on CSs low-to-high transition. The MAX5541 operates with external voltage references from 2V to 3V. The reference voltage determines the DACs full-scale output voltage. The MAX5541 has a power-on reset (POR) circuit to set the DACs output to 0V in unipolar mode when VDD is first.

• Full 16-Bit Performance Without Adjustments
• +5V Single-Supply Operation
• Low Power: 1.5mW
• 1µs Settling Time
• Unbuffered Voltage Output Directly Drives 60kΩ Loads
• SPI/QSPI/MICROWIRE-Compatible Serial Interface
• Power-On Reset Circuit Clears DAC Output to 0V (unipolar mode)
• Schmitt Trigger Inputs for Direct Optocoupler Interface
• Choose MAX541 as a 1LSB (max) INL Upgrade to the MAX5541

• High-Resolution Offset and Gain Adjustment
• Industrial Process Control
• Automated Test Equipment
• Data Acquisition Systems