14-bit precision DAC with fast settling for industrial control loops
The Maxim MAX5544ESA+ is a 14-bit voltage-output digital-to-analog converter built around an R-2R ladder architecture. It delivers a 1 µs typical settling time to ½ LSB, which makes it a fit for closed-loop servo positioning, programmable voltage references, and waveform generation where the update rate needs to keep pace with a control loop running in the tens of kilohertz range. The unbuffered voltage output means the load impedance matters — plan for a downstream buffer if the DAC drives a low-impedance input or a long cable. Data transfer uses a standard SPI interface, which keeps the digital-side pin count low and lets the part talk to most microcontrollers without a glue-logic gate. The digital and analog supplies both run from a single 5 V rail, simplifying the power tree in mixed-signal designs. The operating temperature range covers -40°C to 85°C, so it is rated for industrial environments — motor drives, programmable logic controllers, and test equipment that lives on the factory floor.
R-2R architecture and linearity — what the INL/DNL numbers mean
The integral nonlinearity is specified at ±4 LSB maximum, and the differential nonlinearity at ±0.5 LSB maximum. A DNL within ±0.5 LSB guarantees monotonicity.
Package and supply — layout constraints
Housed in an 8-pin SOIC package with a 3.90 mm body width, the MAX5544ESA+ fits a small PCB footprint. The single 5 V supply rail for both analog and digital sections simplifies decoupling.
Active and RoHS3 compliant — no end-of-life concern
The MAX5544ESA+ carries an Active lifecycle status from the manufacturer. It is also ROHS3 compliant, so it meets the current restriction-of-hazardous-substances requirements for European and most global markets.