Overview
The ADUC836BSZ is a highly integrated microcontroller from Analog Devices Inc., designed as a complete smart transducer front end. This device combines two high-resolution 16-bit Sigma-Delta analog-to-digital converters (ADCs), an 8-bit microcontroller (MCU), and extensive memory capabilities on a single chip. The MCU core is based on the 8052 architecture, making it compatible with the 8051 instruction set. The device is particularly suited for applications requiring precise measurement of low-frequency signals, such as those in weight scales, strain gauges, pressure transducers, and temperature measurement systems.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Core Size | 8-Bit | ||
| Speed | 12.58 MHz | Generated from a 32 kHz crystal using an on-chip PLL | |
| Memory | 62 KB Flash, 4 KB Flash/EE Data, 2304 bytes RAM | ||
| ADC Resolution | 16-Bit | Two independent ADCs with no missing codes | |
| ADC Conversion Rate | 5.4 Hz to 105 Hz | Programmable in 0.732 ms increments | |
| DAC Resolution | 12-Bit | ||
| Power Supply | 2.7 V to 3.6 V or 4.75 V to 5.25 V | V | For AVDD and DVDD |
| Connectivity | EBI/EMI, I²C, SPI, UART/USART | ||
| Peripherals | POR, PSM, PWM, Temp Sensor, WDT |
Key Features
- High-resolution 16-bit Sigma-Delta ADCs with on-chip digital filtering and programmable output data rates.
- Two independent ADCs (primary and auxiliary) with a temperature sensor and PGA for direct measurement of low-level signals.
- 8-bit MCU core based on the 8052 architecture, compatible with the 8051 instruction set.
- Extensive memory: 62 KB Flash program memory, 4 KB Flash/EE data memory, and 2304 bytes of data RAM.
- Support for in-circuit serial download and debug modes via UART, as well as single-pin emulation mode via the EA pin.
- On-chip factory firmware and QuickStart™ development tools.
- Power supply rejection ratio (PSR) of 80 dBs typ at 50 Hz/60 Hz ±1 Hz.
- 12-bit DAC with relative accuracy of ±3 LSB typ and differential nonlinearity of –1 LSB max.
Applications
- Weight scales and strain gauge applications.
- Pressure transducer and temperature measurement systems.
- Data logging applications, where the program memory can be configured as data memory.
- Any application requiring precise measurement of low-frequency signals.
Q & A
- What is the core architecture of the ADUC836BSZ?
The ADUC836BSZ features an 8-bit MCU core based on the 8052 architecture, compatible with the 8051 instruction set.
- What is the resolution of the ADCs in the ADUC836BSZ?
The device includes two 16-bit Sigma-Delta ADCs).
- What is the clock frequency generated by the ADUC836BSZ?
The device generates a high-frequency clock of 12.58 MHz from a 32 kHz crystal using an on-chip PLL).
- What types of memory are available on the ADUC836BSZ?
The device has 62 KB Flash program memory, 4 KB Flash/EE data memory, and 2304 bytes of data RAM).
- What peripherals are included in the ADUC836BSZ?
The device includes POR, PSM, PWM, a temperature sensor, and a watchdog timer (WDT)).
- What are the power supply requirements for the ADUC836BSZ?
The device operates with power supplies ranging from 2.7 V to 3.6 V or 4.75 V to 5.25 V for AVDD and DVDD).
- What connectivity options are available on the ADUC836BSZ?
The device supports EBI/EMI, I²C, SPI, and UART/USART connectivity).
- What is the typical power supply rejection ratio (PSR) of the ADUC836BSZ?
The PSR is typically 80 dBs at 50 Hz/60 Hz ±1 Hz).
- Can the ADUC836BSZ be used for data logging applications?
- What development tools are supported by the ADUC836BSZ?
