ADUC834

PRODUCTION

MicroConverter^®, Dual 16-Bit/24-Bit Σ-Δ ADCs with Embedded 62 kB Flash MCU

Data Sheet (Rev. B) Product Selection Table

Part Models: 2
1ku List Price: Starting From $16.62

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Overview

High Resolution - ADCs
- 2 Independent ADCs (16-Bit and 24-Bit Resolution)
- 24-Bit No Missing Codes, Primary ADC
- 21-Bit rms (18.5-Bit p-p) Effective Resolution @ 20 Hz
- Offset Drift 10 nV/C, Gain Drift 0.5 ppm/C
Memory
- 62 Kbytes On-Chip Flash/EE Program Memory
- 4 Kbytes On-Chip Flash/EE Data Memory
- Flash/EE, 100 Year Retention, 100 Kcycles Endurance
- 3 Levels of Flash/EE Program Memory Security
- In-Circuit Serial Download (No External Hardware)
- High Speed User Download (5 Seconds)
- 2304 Bytes On-Chip Data RAM
8051-Based Core
- 8051 Compatible Instruction Set
- 32 kHz External Crystal
- On-Chip Programmable PLL (12.58 MHz Max)
- 3 16-Bit Timer/Counter
- 26 Programmable I/O Lines
- 11 Interrupt Sources, Two Priority Levels
- Dual Data Pointer, Extended 11-Bit Stack Pointer
See data sheet for additional features

The ADuC834 is a complete smart transducer front end, integrating two high resolution - ADCs, an 8-bit MCU, and program/data Flash/EE memory on a single chip.

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 and programmable output data rates are intended for the measurement of wide dynamic range, low frequency signals, such as those in weigh scale, strain-gage, pressure transducer, or temperature measurement applications.

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 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 instruction set compatible with 12 core clock periods per machine cycle.

62 Kbytes of nonvolatile Flash/EE program memory, 4 Kbytes of nonvolatile Flash/EE data memory, and 2304 bytes of data RAM are 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 ADuC834 is supported by a QuickStart™ development system featuring low cost software and hardware development tools.

Applications

Intelligent sensors
Weigh scales
Portable instrumentation, battery-powered systems
4–20 mA transmitters
Data logging
Precision system monitoring

Part Models: 2
1ku List Price: Starting From $16.62

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
ADUC834BCPZ	56-Lead LFCSP (8mm x 8mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUC834BSZ	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
ADUC834BCPZ	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
ADUC834BSZ	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
ADUC834BSZ	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
ADUC834BSZ	PRODUCTION

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

Software Resources

ADuC834 Code Examples 3

Can't find the software or driver you need?

Tools & Simulations

Sigma-Delta ADC Tutorial

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

Open Tool

Evaluation Kits

ADuC834 QuickStart Development System

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Product Details

Development system for evaluation of the ADuC834, 24-Bit ADC + 16-Bit ADC + 12-Bit DAC + 62K-Byte Flash MCU. This development system is also recommanded for evaluation of ADuC836, Dual 16-Bit ADC + 12-Bit DAC + 62K-Byte 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.

It can be ordered separately.