The MAX5138/MAX5139 are a family of single-channel pin-compatible and software-compatible 16-bit and 12-bit DACs. They are low-power, high-linearity voltage-output DACs with buffered outputs. These devices accept a wide supply voltage range and feature multiple interfaces and functions, making them suitable for precision control and instrumentation applications.
The MAX5138 and MAX5139 are a family of single‑channel, pin‑compatible DACs offering 16‑bit (MAX5138) or 12‑bit (MAX5139) resolution in an ultra‑small 3 mm × 3 mm, 16‑pin TQFN package. They feature a precision internal reference, optional external reference, and a 30 MHz 3‑wire SPI/QSPI/MICROWIRE/DSP‑compatible serial interface with double‑buffered registers and LDAC for simultaneous output updates. The devices support daisy‑chaining via a READY output and include a hardware reset to zero or midscale on power‑up.
Designed for precision control and instrumentation, the DACs operate over a wide supply range of +2.7 V to +5.25 V and an extended industrial temperature range of –40 °C to +105 °C. Typical specifications include low power consumption (≈2 µA in shutdown), high‑performance 10 ppm/°C internal reference, and guaranteed monotonicity across all conditions.
| Resolution | 16‑bit (MAX5138) / 12‑bit (MAX5139) |
|---|---|
| Supply Voltage Range | +2.7 V to +5.25 V |
| Serial Interface Speed | Up to 30 MHz |
| Power Consumption (Shutdown) | ≈2 µA max |
| Operating Temperature Range | –40 °C to +105 °C |
They operate from +2.7 V up to +5.25 V.
The serial‑clock can run up to 30 MHz.
They are specified for –40 °C to +105 °C.