8-bit voltage DAC in a hand-solderable 18-SOIC
The MX7224KCWN+ is an 8-bit, voltage-buffered DAC using an R-2R ladder architecture. It converts an 8-bit parallel digital word into an analog voltage output, with the output span set by an external reference voltage you supply. Settling time is 8 µs to within ±½ LSB, which means the output can update at roughly 125 kHz before the settling eats into the conversion window. The parallel data interface is fast — it latches all eight bits in one write cycle — but it ties up eight GPIO lines on your microcontroller. Integral and differential non-linearity are both ±1 LSB maximum, guaranteeing monotonicity and no missing codes across the full 8-bit range. For a control-loop setpoint or a waveform generator, that means every digital code produces a unique analog output.
Supply rails and board integration
This DAC needs split supplies: an analog rail of 11.4 V to 16.5 V and a separate -5 V rail, plus a digital supply of 14.25 V to 15.75 V. No BGA rework, no hidden pads. The 0.295-inch (7.50 mm) width is the same as a standard SOIC-16 wide, so layout is straightforward. Fine for benchtop instruments, lab gear, audio processors, or industrial control cabinets that stay indoors. Not for under-hood or outdoor enclosures without climate control.
Active lifecycle and compliance
ROHS3 compliant — no lead, no restricted substances under the current EU directive. No exemption paperwork needed for your compliance file. Sourced through independent distribution channels.