In a lab or production test environment, a precision measurement instrument that gives inconsistent readings is worse than no instrument at all. Engineers trust the data. Bad data leads to bad decisions.
One of the most overlooked causes of measurement drift and noise is the power supply. Switching converters generate ripple. Shared bus voltages sag under load. Ground potential differences inject offset errors. All of these show up as unstable readings on your instrument's display — and the datasheet says nothing about it.
The MDA75-24D05/12 dual-output module addresses this directly.
| Parameter | Specification |
|---|
| Input | 18–36 VDC |
| Output | ±5V / ±12V dual channel, 3A / 4A |
| Total Power | 75W |
| Isolation | 1500 VDC (input-output) |
| Ripple | 80mV (5V) / 120mV (12V) |
| Dimensions | 116.4 × 65 × 22 mm |
Precision instruments typically need separate analog and digital power rails: ±12V for analog signal conditioning (op-amps, instrumentation amplifiers, ADC front-ends) and ±5V for digital logic (microcontrollers, memory, communication interfaces). The MDA75-24D05/12 delivers both from a single 24V input — no second converter, no extra wiring, no added noise sources.
High-frequency switching noise on the power rail couples directly into analog signal paths. The MDA75-24D05/12's 80–120mV ripple specification, combined with the 1500VDC isolation barrier between input and output, keeps analog circuits clean even when the input bus is noisy.
Without isolation, ground loops form between instruments connected to the same bench supply. These loops inject offset currents that shift measured values in ways that are difficult to trace. Input-output isolation eliminates this class of error at the source.
The module is available for evaluation. Our team can advise on PCB layout and decoupling recommendations for noise-sensitive analog applications.
