ADUC816
PRODUCTIONMicroConverter®, Dual-Channel 16-Bit ADCs with Embedded Flash MCU
- Part Models
- 3
- 1ku List Price
- Starting From $6.86
Part Details
- 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 μA (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)
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 intended for the measurement of wide dynamic range, low frequency signals, such as those in weigh scale, strain gauge, pressure transducer, or temperature measurement applications. The ADC output data rates are programmable and the ADC output resolution will vary with the programmed gain and output rate.
The device operates from a 32 kHz crystal with an on-chip PLL generating a high-frequency clock of 12.58 MHz. This clock is, in turn, routed through a programmable clock divider from which the MCU core clock operating frequency is generated. The microcontroller core is an 8052 and therefore 8051-instructionset-compatible. The microcontroller core machine cycle consists of 12 core clock periods of the selected core operating frequency. 8 Kbytes of nonvolatile Flash/EE program memory are provided on-chip. 640 bytes of nonvolatile Flash/EE data memory and 256 bytes RAM are also integrated on-chip.
The ADuC816 also incorporates additional analog functionality with a 12-bit DAC, current sources, power supply monitor, and a bandgap reference. On-chip digital peripherals include a watchdog timer, time interval counter, three timers/counters, and three serial I/O ports (SPI, UART, and I2C-compatible).
On-chip factory firmware supports in-circuit serial download and debug modes (via UART), as well as single-pin emulation mode via the EA pin.
The part operates from a single 3 V or 5 V supply. When operating from 3 V supplies, the power dissipation for the part is below 10 mW. The ADuC816 is housed in a 52-lead MQFP package. The part operates from a single 3 V or 5 V supply. When operating from 3 V supplies, the power dissipation for the part is below 10 mW. The ADuC816 is housed in 52-lead MQFP and 56-lead LFCSP packages.
Applications
- Intelligent Sensors (IEEE1451.2-Compatible)
- Weigh Scales
- Portable Instrumentation
- Pressure Transducers
- 4–20 mA Transmitters
Documentation
Data Sheet 2
User Guide 2
Application Note 12
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADUC816BCPZ | 56-Lead LFCSP (8mm x 8mm w/ EP) | ||
| ADUC816BSZ | 52-Lead MQFP (10mm x 10mm) | ||
| ADUC816BSZ-REEL | 52-Lead MQFP (10mm x 10mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
| No Match Found | ||
|
Apr 1, 2015 - 15_0024 Conversion of 8x8mm and 9x9mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines |
||
| ADUC816BCPZ | PRODUCTION | |
|
Oct 18, 2016 - 16_0034 Assembly Relocation of Select LQFP,LQFP_EP,MQFP,TQFP,TQFP_EP Products to Stats ChipPAC China Jiangyin |
||
| ADUC816BSZ | PRODUCTION | |
| ADUC816BSZ-REEL | PRODUCTION | |
|
Aug 19, 2009 - 07_0024 Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad |
||
| ADUC816BSZ | PRODUCTION | |
| ADUC816BSZ-REEL | PRODUCTION | |
|
Jan 5, 2009 - 07_0077 Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages |
||
| ADUC816BSZ | PRODUCTION | |
| ADUC816BSZ-REEL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
ADuC816 Code Examples 1
Evaluation Software 0
Tools & Simulations
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.
Open ToolEvaluation Kits
ADuC824 QuickStart Development System