ADuC816 is a high-resolution Sigma-Delta ADCs dual 16-bit independent ADCs with programmable gain front end, 16-bit no missing codes, primary ADC 13-bit p-p resolution @20Hz, 20mV range, 16-bit p-p resolution @20Hz, 2.56 V range, memory 8 Kbytes on-chip Flash/EE program storage
The ADuC816 is a MicroConverter® dual‑channel 16‑bit sigma‑delta ADC with an integrated 8051‑compatible MCU, on‑chip flash/program memory, and a variety of analog and digital peripherals. It is targeted at intelligent sensor, weigh‑scale, and instrumentation applications that require high‑resolution, low‑frequency measurements.
The device operates from a single 3 V or 5 V supply, offers up to 12.58 MHz core clock, and includes features such as a 12‑bit DAC, temperature sensor, programmable gain front‑end, and multiple serial interfaces (UART, SPI, PC‑compatible). Detailed specifications for ADC performance, power consumption, and timing are provided in the following sections.
| Program Flash Memory | 8 KB |
|---|---|
| Data Flash Memory | 640 B |
| Core Clock Maximum | 12.58 MHz |
| Normal Mode Current | 3 mA @ 3 V |
| Power‑Down Current | 20 pA (crystal running) |
| Operating Voltage | 3 V or 5 V |
| Package | 52‑lead MQFP |
| Primary ADC Resolution | 16‑bit |
| DAC Resolution | 12‑bit |
| Temperature Sensor Accuracy | ±2 °C (typ) |
The core clock can be programmed up to 12.58 MHz.
It includes 8 KB of on‑chip flash program memory and 640 B of flash data memory.
In normal mode the device draws about 3 mA at 3 V, while in power‑down mode it consumes as little as 20 pA with the crystal running.
The primary ADC offers 16‑bit resolution with no missing codes.