Overview
The ADUC847BS62-5, produced by Analog Devices Inc., is a MicroConverter that integrates high-resolution Σ-Δ analog-to-digital converters (ADCs) with a single-cycle 8052-based microcontroller core. This device is part of the ADuC845, ADuC847, and ADuC848 family, which are designed to serve as complete smart transducer front ends. The ADUC847BS62-5 features a single 24-bit Σ-Δ ADC, flexible input multiplexing, and embedded Flash/EE memory, making it suitable for a variety of precision measurement applications.
Key Specifications
| Specification | Details |
|---|---|
| ADC Resolution | 24-bit Σ-Δ ADC (single ADC) |
| Effective Resolution | 22-bit rms (19.5 bit p-p) |
| ADC Input Channels | Up to 10 channels |
| Memory | 62 kbytes on-chip Flash/EE program memory, 4 kbytes on-chip Flash/EE data memory, 2304 bytes on-chip data RAM |
| Microcontroller Core | 8051-based core, single-cycle, 12.58 MIPs performance |
| Clock | 32 kHz external crystal, on-chip programmable PLL (12.58 MHz max) |
| Timers/Counters | 3 × 16-bit timer/counter |
| I/O Lines | 24 programmable I/O lines, plus 8 analog or digital input lines |
| Interrupt Sources | 11 interrupt sources, two priority levels |
| Power Supply | Operates from 3 V and 5 V, typical current consumption: 4.8 mA max at 3.6 V (core CLK = 1.57 MHz) |
| Package and Temperature Range | 52-lead MQFP (14 mm × 14 mm), −40°C to +125°C |
Key Features
- High resolution Σ-Δ ADCs with flexible input multiplexing and on-chip digital filtering.
- Single-cycle 8052-based microcontroller core with up to 12.58 MIPs performance.
- Embedded 62 kbytes Flash/EE program memory, 4 kbytes Flash/EE data memory, and 2304 bytes data RAM.
- In-circuit serial download and debug modes via UART, and single-pin emulation mode via the EA pin.
- Dual 16-bit Σ-Δ DACs, 12-bit voltage output DAC, and on-chip temperature sensor (ADuC845 only).
- Dual excitation current sources and programmable gain amplifier (PGA) for direct measurement of low-level signals.
- UART, SPI®, and I2C® serial I/O, high speed dedicated baud rate generator, and watchdog timer.
- Internal power-on reset circuit, power supply monitor, and time interval counter (wake-up/RTC timer).
Applications
- Multichannel sensor monitoring.
- Industrial and environmental instrumentation.
- Weigh scales, pressure sensors, and temperature monitoring.
- Portable instrumentation and battery-powered systems.
- Data logging and precision system monitoring.
Q & A
- What is the resolution of the ADC in the ADUC847BS62-5?
The ADUC847BS62-5 features a single 24-bit Σ-Δ ADC.
- How many ADC input channels does the ADUC847BS62-5 support?
Up to 10 ADC input channels.
- What type of microcontroller core does the ADUC847BS62-5 use?
The ADUC847BS62-5 uses an 8051-based core with single-cycle execution and up to 12.58 MIPs performance.
- What are the memory options available on the ADUC847BS62-5?
62 kbytes on-chip Flash/EE program memory, 4 kbytes on-chip Flash/EE data memory, and 2304 bytes on-chip data RAM.
- What is the operating temperature range of the ADUC847BS62-5?
The operating temperature range is −40°C to +125°C.
- What are the primary applications of the ADUC847BS62-5?
Primary applications include multichannel sensor monitoring, industrial and environmental instrumentation, weigh scales, pressure sensors, temperature monitoring, and data logging.
- Does the ADUC847BS62-5 support in-circuit serial download?
- What is the power consumption of the ADUC847BS62-5 in normal mode?
Typical current consumption is 4.8 mA max at 3.6 V (core CLK = 1.57 MHz).
- Does the ADUC847BS62-5 have a watchdog timer?
- What serial communication interfaces are supported by the ADUC847BS62-5?
UART, SPI®, and I2C® serial I/O are supported.
