16-bit DAC with 1 µs settling for precision setpoints
The MAX541AESA+ is a 16-bit voltage-output DAC from Analog Devices using an R-2R ladder architecture. Its 1 µs typical settling time means it can update a control voltage in under two microseconds, fast enough for closed-loop motor current limits or programmable reference levels in industrial gear. The SPI digital interface keeps wiring simple—three wires (SCLK, DIN, CS) plus an external reference pin. No parallel bus, no address lines.
±0.5 LSB linearity and no missing codes
Maximum INL and DNL are both ±0.5 LSB, which guarantees monotonicity over the full 16-bit range. You do not need a calibration step on the production line or a lookup table in firmware to correct for missing codes. The unbuffered voltage output means the DAC output impedance is the R-2R network itself. The load must be high-impedance or buffered externally.
Single 5 V supply and external reference
Both analog and digital supplies are 5 V—one rail, no split supply. The reference is external; the output voltage is Vref × (digital code / 65536). Choose a precision reference like the MAX6126 for best drift performance.