Overview
The ADUC812BSZ, produced by Analog Devices Inc., is a fully integrated 12-bit data acquisition system. It combines a high-performance self-calibrating multichannel analog-to-digital converter (ADC), dual digital-to-analog converters (DACs), and a programmable 8-bit microcontroller (MCU) compatible with the 8051 instruction set. This MicroConverter integrates various peripherals and memory, making it suitable for a wide range of applications requiring precise analog and digital signal processing.
Key Specifications
| Specification | Details |
|---|---|
| ADC Resolution | 12-bit |
| Number of ADC Channels | 8 channels |
| ADC Conversion Rate | Up to 200 kSPS |
| Voltage Reference | On-chip, 100 ppm/°C |
| DACs | 2 x 12-bit voltage output DACs |
| Temperature Sensor | On-chip temperature sensor function |
| Memory | 8K bytes on-chip Flash/EE program memory, 640 bytes on-chip Flash/EE data memory, 256 bytes on-chip data RAM |
| External Memory | 64K bytes external program address space, 16M bytes external data address space |
| MCU Core | 8051 compatible core, 12 MHz nominal operation (16 MHz max) |
| Timers/Counters | 3 x 16-bit timer/counters |
| Serial I/O | UART, SPI, and 2-wire (400 kHz I2C compatible) serial I/O |
| Operating Voltage | 3 V and 5 V operation |
| Operating Modes | Normal, idle, and power-down modes |
| Package | 52-lead, plastic quad flatpack package |
Key Features
- High accuracy 12-bit ADC with self-calibration
- On-chip 100 ppm/°C voltage reference
- High speed ADC conversion up to 200 kSPS
- DMA controller for high speed ADC-to-RAM capture
- Two 12-bit voltage output DACs
- On-chip temperature sensor function
- 8051 compatible MCU core with 8K bytes Flash/EE program memory, 640 bytes Flash/EE data memory, and 256 bytes data SRAM
- Watchdog timer and power supply monitor
- UART, SPI, and 2-wire (400 kHz I2C compatible) serial I/O
- High current drive capability on Port 3
- Nine interrupt sources with two priority levels
Applications
- Intelligent sensors and calibration and conditioning systems
- Battery-powered systems (e.g., portable PCs, instruments, monitors)
- Transient capture systems
- Data acquisition and communication systems
- Control loop monitors (e.g., optical networks/base stations)
Q & A
- What is the resolution of the ADC in the ADUC812BSZ?
The ADC resolution is 12 bits. - How many ADC channels does the ADUC812BSZ have?
The ADUC812BSZ has 8 ADC channels. - What is the maximum conversion rate of the ADC?
The maximum conversion rate is up to 200 kSPS. - Does the ADUC812BSZ have an on-chip temperature sensor?
Yes, it has an on-chip temperature sensor function. - What type of MCU core does the ADUC812BSZ use?
The MCU core is 8051 compatible. - What are the operating voltage options for the ADUC812BSZ?
The ADUC812BSZ operates at 3 V and 5 V. - What are the different operating modes of the ADUC812BSZ?
The operating modes include normal, idle, and power-down modes. - What type of package is the ADUC812BSZ available in?
The ADUC812BSZ is available in a 52-lead, plastic quad flatpack package. - Does the ADUC812BSZ support serial communication protocols?
Yes, it supports UART, SPI, and 2-wire (400 kHz I2C compatible) serial I/O. - What is the purpose of the DMA controller in the ADUC812BSZ?
The DMA controller is used for high speed ADC-to-RAM capture.
