Overview
The ADUC831BSZ is a highly integrated data acquisition system from Analog Devices Inc., part of the ADuC8xx MicroConverter series. This device combines a high-performance self-calibrating multi-channel 12-bit ADC, dual 12-bit DACs, and a programmable 8-bit MCU on a single chip. The microcontroller core is based on the 8052 architecture, making it 8051-instruction-set compatible with 12 core clock periods per machine cycle. It features 62 kBytes of nonvolatile Flash/EE program memory, 4 kBytes of nonvolatile Flash/EE data memory, 256 bytes of RAM, and 2 kBytes of extended RAM. The ADUC831BSZ is designed for high-performance embedded control applications and supports various operating modes and communication protocols.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Microcontroller Core | 8052, 8051-instruction-set compatible | |
| Clock Speed | Up to 16 MHz | |
| Program Memory | 62 kBytes Flash/EE | |
| Data Memory | 4 kBytes Flash/EE, 256 bytes RAM, 2 kBytes extended RAM | |
| ADC | 8-channel, 12-bit, 247 kSPS | |
| DAC | Dual 12-bit (monotonic) voltage output | |
| Communication Interfaces | I2C, SPI, UART/USART | |
| Operating Voltage | 3 V, 5 V | |
| Operating Temperature | -40°C to 125°C | |
| Package | 52-lead MQFP (10mm x 10mm) |
Key Features
- High-performance self-calibrating multi-channel 12-bit ADC with 247 kSPS sampling rate and ±1 LSB INL DC performance, 71 dB SNR AC performance.
- Dual 12-bit (monotonic) voltage output DACs and dual output 16-bit PWM/Σ-Δ DACs.
- On-chip temperature sensor function ±3°C and on-chip voltage reference.
- 8051 compatible instruction set with dual data pointer and extended 11-bit stack pointer.
- On-chip peripherals include Time Interval Counter (TIC), UART, I2C, SPI serial I/O, Watchdog Timer (WDT), and Power Supply Monitor (PSM).
- Support for in-circuit serial download and debug modes via UART, and single-pin emulation mode via the EA pin.
- 34 programmable I/O lines.
- Low power consumption with power-down mode of 20 μA at 3 V.
Applications
- Optical networking—laser power control
- Base station systems
- Precision instrumentation
- Smart sensors
- Transient capture systems
- Data acquisition and communications systems.
Q & A
- What is the ADUC831BSZ?
The ADUC831BSZ is a fully integrated data acquisition system from Analog Devices Inc., featuring a high-performance self-calibrating multi-channel 12-bit ADC, dual 12-bit DACs, and a programmable 8-bit MCU on a single chip.
- What is the microcontroller core of the ADUC831BSZ?
The microcontroller core is based on the 8052 architecture, making it 8051-instruction-set compatible.
- What are the key memory specifications of the ADUC831BSZ?
It includes 62 kBytes of nonvolatile Flash/EE program memory, 4 kBytes of nonvolatile Flash/EE data memory, 256 bytes of RAM, and 2 kBytes of extended RAM.
- What are the communication interfaces supported by the ADUC831BSZ?
The device supports I2C, SPI, and UART/USART communication interfaces.
- What is the operating voltage range of the ADUC831BSZ?
The device operates at 3 V and 5 V.
- What is the operating temperature range of the ADUC831BSZ?
The operating temperature range is from -40°C to 125°C.
- What package types are available for the ADUC831BSZ?
The device is available in a 52-lead MQFP (10mm x 10mm) package.
- What are some typical applications of the ADUC831BSZ?
Typical applications include optical networking, base station systems, precision instrumentation, smart sensors, transient capture systems, and data acquisition and communications systems.
- Does the ADUC831BSZ support low power modes?
Yes, it supports normal, idle, and power-down modes with a power-down current of 20 μA at 3 V.
- What development tools are available for the ADUC831BSZ?
The device is supported by QuickStart™ and QuickStart Plus development systems featuring low-cost software and hardware development tools.
