The CN-0015 circuit note from Analog Devices presents a design that combines the AD5383 32‑channel, 12‑bit DAC with the AD7476 12‑bit, 1 MSPS ADC. The circuit provides channel monitoring by routing any DAC output to a single MON_OUT pin for external ADC observation, simplifying troubleshooting and diagnostics.
The note includes detailed layout recommendations, such as using at least a four‑layer PCB (ground, power, and two signal layers) and proper decoupling capacitors. It also lists optional variations, reference datasheets, and further reading resources for designers who wish to adapt the circuit to their applications. This manual is written in Chinese.
| AD5383 DAC channels | 32 channels, 12‑bit |
|---|---|
| AD5383 package | 100‑pin LQFP |
| AD7476 ADC resolution | 12‑bit |
| AD7476 sampling rate | 1 MSPS |
| AD7476 supply voltage | 2.35 V to 5.25 V |
| AD7476 package | 6‑pin SOT‑23 |
| PCB layer recommendation | Minimum 4 layers |
| AD5383 monitoring feature | Built‑in channel monitor via multiplexed MON_OUT pin |
The circuit uses the AD5383 32‑channel, 12‑bit DAC and the AD7476 12‑bit, 1 MSPS ADC.
The AD5383 includes a built‑in channel monitoring function that routes any channel output to the MON_OUT pin for external ADC monitoring.
The AD7476 operates from a single supply of 2.35 V to 5.25 V.
A minimum of four PCB layers (ground, power, and two signal layers) is recommended for optimal layout and performance.