Reliable local supply of data-converter ICs
If your project needs precise analogue-to-digital (ADC) or digital-to-analogue (DAC) conversion, waiting weeks for parts is the last thing you want. Communica keeps a practical selection of data-converter ICs, evaluation boards and accessory components in South Africa so you can prototype, teach or deliver production without long overseas delays. Enjoy branch collection, VAT invoices for tertiary/education purchases, and account quoting for procurement teams.
Why source converters locally?
Local stock reduces lead times and gives you faster iteration cycles: pick up in Samrand or our Pretoria/Cape Town branches to avoid freight delays. We stock converter ICs from multiple global brands and maker-friendly evaluation modules so you can test reference designs quickly and move to production with fewer logistics risks.
Common converter types and where to use them
Understanding which converter you need saves both time and budget. Typical options we carry include successive-approximation ADCs (SAR) for medium-speed precision, delta-sigma ADCs for high-resolution slow signals, and rail-to-rail DACs for audio and control outputs. Many maker and education projects benefit from evaluation boards and breakout modules for rapid bench testing.
Specification callouts to compare
When comparing parts, focus on sample rate, resolution, input range, SNR/THD (if audio), interface (SPI/I2C/parallel), and package type. For board-level work, ensure the package matches your soldering capability (SOIC vs QFN). We surface all of these specs on product listings so you can compare quickly and pick compatible support components like reference voltages and input filtering.
| Type | Resolution | Typical Use | Interface |
|---|---|---|---|
| Delta-sigma ADC | 16-24 bit | Audio, precision sensors | I2S/SPI |
| SAR ADC | 8-18 bit | Data logging, multiplexed inputs | SPI |
| Voltage-output DAC | 8-16 bit | Control signals, waveform generation | I2C/SPI |
Quick calculations and interface notes
Use this simple formula to estimate ADC throughput needs: Sample Rate (Hz) = Number of channels × Required sample frequency per channel. For multiplexed SAR ADCs you must budget settling time and MUX switching time. For power budgeting, estimate P = Vcc × Icc (check datasheet).
Wiring diagram (simple SPI ADC to MCU):
MCU MOSI ---- (if used) ---- MCU MISO -----------------> ADC DOUT MCU SCLK -----------------> ADC SCLK MCU CS -------------------> ADC CS GND ---------------------> ADC GND VREF --------------------> ADC VREF
Explore our broader parts ranges and compatible support components on the Collections and full All Products index for boards, op-amps and references.
