ADUC845

PRODUCTION

MicroConverter^® Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU

Data Sheet (Rev. D) Product Selection Table

Part Models: 8
1ku List Price: Starting From $13.15

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Overview

High resolution Σ-Δ ADCs
2 independent 24-bit ADCs
Up to 10 ADC input channels on all devices
24-bit no missing codes
22-bit rms (19.5 bit p-p) effective resolution
Offset drift 10 nV/°C, gain drift 0.5 ppm/°C chop enabled
Memory
- 62-kbyte on-chip Flash/EE program memory
- 4-kbyte on-chip Flash/EE data memory
- Flash/EE, 100-year retention, 100 kcycle endurance
- 3 levels of Flash/EE program memory security
- In-circuit serial download (no external hardware)
- High speed user download (5 sec)
- 2304 bytes on-chip data RAM
See data sheet for additional features

The ADuC845, ADuC847, and ADuC848 are single-cycle, 12.58 MIPs, 8052 core upgrades to the ADuC834 and ADuC836. They include additional analog inputs for applications requiring more ADC channels.

The ADuC845, ADuC847, and ADuC848 are complete smart transducer front ends. The family integrates high resolution Σ-Δ ADCs with flexible, up to 10-channel, input multiplexing, a fast 8-bit MCU, and program and data Flash/EE memory on a single chip.

The ADuC845 includes two (primary and auxiliary) 24-bit Σ-Δ ADCs with internal buffering and PGA on the primary ADC. The ADuC847 includes the same primary ADC as the ADuC845 (auxiliary ADC removed). The ADuC848 is a 16-bit ADC version of the ADuC847.

The ADCs incorporate flexible input multiplexing, a temperature sensor (ADuC845 only), and a PGA (primary ADC only) allowing direct measurement of low-level signals. The ADCs include on-chip digital filtering and programmable output data rates that are intended for measuring wide dynamic range and low frequency signals, such as those in weigh scale, strain gage, pressure transducer, or temperature measurement applications.

The devices operate from a 32 kHz crystal with an on-chip PLL generating a high frequency clock of 12.58 MHz. This clock is routed through a programmable clock divider from which the MCU core clock operating frequency is generated. The microcontroller core is an optimized single-cycle 8052 offering up to 12.58 MIPs performance while maintaining 8051 instruction set compatibility.

The available nonvolatile Flash/EE program memory options are 62 kbytes, 32 kbytes, and 8 kbytes. 4 kbytes of nonvolatile Flash/EE data memory and 2304 bytes of data RAM are also provided on-chip. The program memory can be configured as data memory to give up to 60 kbytes of NV data memory in data logging applications.

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 ADuC845, ADuC847, and ADuC848 are supported by the QuickStart™ development system featuring low cost software and hardware development tools.

Applications

Multichannel sensor monitoring
Industrial/environmental instrumentation
Weigh scales, pressure sensors, temperature monitoring
Portable instrumentation, battery-powered systems
Data logging, precision system monitoring

Part Models: 8
1ku List Price: Starting From $13.15

Documentation

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
ADUC845BCPZ62-3	56-Lead LFCSP (8mm x 8mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUC845BCPZ62-5	56-Lead LFCSP (8mm x 8mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUC845BSZ62-3	52-Lead MQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUC845BSZ62-5	52-Lead MQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUC845BSZ62-5-RL	52-Lead MQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUC845BSZ8-3	52-Lead MQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUC845BSZ8-5	52-Lead MQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUC845BSZ8-5-RL	52-Lead MQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

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
		PCN15_0024_Form Material_Report Detailed Change Description Package Outline Drawing Qualification Results Summary
ADUC845BCPZ62-3	PRODUCTION
ADUC845BCPZ62-5	PRODUCTION
Oct 18, 2016 - 16_0034 Assembly Relocation of Select LQFP,LQFP_EP,MQFP,TQFP,TQFP_EP Products to Stats ChipPAC China Jiangyin
		PCN16_0034_Form Material_Report Qualification Results Summary Qualification Results Summary Qualification Results Summary
ADUC845BSZ62-3	PRODUCTION
ADUC845BSZ62-5	PRODUCTION
ADUC845BSZ62-5-RL	PRODUCTION
ADUC845BSZ8-3	PRODUCTION
ADUC845BSZ8-5	PRODUCTION
ADUC845BSZ8-5-RL	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
		Material_Report Material_Report Parts List PCN07_0024_Form Qual Data
ADUC845BSZ62-3	PRODUCTION
ADUC845BSZ62-5	PRODUCTION
ADUC845BSZ8-3	PRODUCTION
ADUC845BSZ8-5	PRODUCTION
Jan 5, 2009 - 07_0077 Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages
		07_0077Rev D_LQFP_Dec17 07_0077Rev D_MQFP_Dec15 07_0077Rev D_Obsolesence_Dec15 07_0077Rev D_TQFP_Dec15 Material_Report PCN07_0077_Form QFP Transfer Qualification Results-tests_DEC12CL
ADUC845BSZ62-3	PRODUCTION
ADUC845BSZ62-5	PRODUCTION
ADUC845BSZ8-3	PRODUCTION
ADUC845BSZ8-5	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

ADuC845 Code Examples 2

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Tools & Simulations

Sigma-Delta ADC Tutorial

An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.

Open Tool

Evaluation Kits

ADuC845 QuickStart and QuickStart Plus Development

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Product Details

Development systems for the evaluation of the ADuC845 Precision Analog Microcontroller with 10-Channel 24-Bit ADC + 12 MIPS Flash MCU.

The QuickStart Kits for the ADuC8x-series (8052-core) Precision Analog Microcontrollers feature serial-port download/debug capability and an assembly-source debugging environment.

ADI also provides a non-intrusive emulation POD called the USB-EA-CONVZ allowing assembly & C-source debugging. The QuickStart Plus includes the POD (USB-EA-CONVZ) or it can be ordered separately.