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ADUC816

Analog Devices
Part Number ADUC816
Manufacturer Analog Devices
Description Dual-Channel 16-Bit ADCs
Published May 4, 2009
Detailed Description a MicroConverter®, Dual-Channel 16-Bit ADCs with Embedded Flash MCU ADuC816 FEATURES High-Resolution Sigma-Delta ADCs...
Datasheet PDF File ADUC816 PDF File

ADUC816
ADUC816

Overview
a MicroConverter®, Dual-Channel 16-Bit ADCs with Embedded Flash MCU ADuC816 FEATURES High-Resolution Sigma-Delta ADCs Dual 16-Bit Independent ADCs Programmable Gain Front End 16-Bit No Missing Codes, Primary ADC 13-Bit p-p Resolution @ 20 Hz, 20 mV Range 16-Bit p-p Resolution @ 20 Hz, 2.
56 V Range Memory 8 Kbytes On-Chip Flash/EE Program Memory 640 Bytes On-Chip Flash/EE Data Memory Flash/EE, 100 Year Retention, 100 Kcycles Endurance 256 Bytes On-Chip Data RAM 8051-Based Core 8051-Compatible Instruction Set (12.
58 MHz Max) 32 kHz External Crystal, On-Chip Programmable PLL Three 16-Bit Timer/Counters 26 Programmable I/O Lines 11 Interrupt Sources, Two Priority Levels Power Specified for 3 V and 5 V Operation Normal: 3 mA @ 3 V (Core CLK = 1.
5 MHz) Power-Down: 20 ␮A (32 kHz Crystal Running) On-Chip Peripherals On-Chip Temperature Sensor 12-Bit Voltage Output DAC Dual Excitation Current Sources Reference Detect Circuit Time Interval Counter (TIC) UART Serial I/O I2C®-Compatible and SPI® Serial I/O Watchdog Timer (WDT), Power Supply Monitor (PSM) APPLICATIONS Intelligent Sensors (IEEE1451.
2-Compatible) Weigh Scales Portable Instrumentation Pressure Transducers 4–20 mA Transmitters GENERAL DESCRIPTION The ADuC816 is a complete smart transducer front-end, integrating two high-resolution sigma-delta ADCs, an 8-bit MCU, and program/data Flash/EE Memory on a single chip.
This low power device accepts low-level signals directly from a transducer.
The two independent ADCs (Primary and Auxiliary) include a temperature sensor and a PGA (allowing direct measurement of low-level signals).
The ADCs with on-chip digital filtering are MicroConverter is a registered trademark of Analog Devices, Inc.
SPI is a registered trademark of Motorola, Inc.
I2C is a registered trademark of Philips Semiconductors, Inc.
FUNCTIONAL BLOCK DIAGRAM AIN1 AIN2 AIN3 AIN4 AIN5 AVDD ADuC816 AVDD MUX BUF PGA MUX AGND AUXILIARY 16-BIT ⌺-⌬ ADC PRIMARY 16-BIT ⌺-⌬ ADC 12-BIT VOLTAGE O/P DAC CURRE...


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