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Product category: Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: MSC1211 and MSC1212
Edited by the Electronicstalk Editorial Team on 22 April 2003

Data acquisition chip takes MCU onboard

A new family of low-noise (75nV), 24bit data acquisition SoC solutions incorporates a quad 16bit D/A convertor and I2C interface

The unequalled integration of high-precision analogue and digital processing makes the MSC1211 the ideal choice for demanding high-resolution measurement applications in industrial process control, portable instrumentation, weigh scales, smart transmitters and chromatography. By surpassing customers' complex design requirements at a price significantly below the cost to duplicate the same functionality, the MSC1211 stands as the most valuable data conversion system on the market.

'Building on the successful and innovative MSC1210 family, TI now offers customers a series of pin-compatible, mixed-signal devices which further push the envelope of high-performance functionality in a single chip', said Robert Schreiber, Product Line Manager for TI's microsystem data convertor products.

'Since the functionality and performance featured in the MSC1211 is traditionally implemented with external circuitry, this device will simplify the design of complex systems, improve performance and reduce customers' overall component cost'.

The MSC1211 family integrates a 24bit delta-sigma analogue-to-digital convertor (ADC) with an enhanced 8051 processor core, Flash memory and a variety of high-performance on-chip peripherals to achieve unparalleled system performance - all at 4mW power consumption.

The integration of the analogue and digital cores gives customers the ability to customise the device to meet their specific requirements.

The enhanced 8051 core executes up to three times faster, with lower power, than the standard 8051 core.

The MSC1211 family offers a variety of Flash memory sizes with pin and function compatibility, thus allowing the customer to freely migrate between devices as their code requirements change.

In terms of analogue performance, the MSC1211 family offers the industry's lowest noise performance in a mixed-signal device (75nV).

The noise performance of the ADC is better than most standalone ADCs on the market and is significantly better than any comparable mixed-signal device.

The ADC also has a much faster (10x) sampling rate versus competing devices.

The analogue features consist of a 24bit delta sigma ADC, four 16bit DACs, a flexible eight-channel multiplexer, burn-out detect, selectable buffered input, offset DAC, programmable gains of up to 128, selectable data output rate, programmable single-cycle settling filter, precision on-chip voltage reference or external differential voltage reference, on-chip temperature sensor, on-chip calibration, low voltage detect and brown-out reset.

The digital features include an enhanced 8051 microcontroller core with dual data pointers, four Flash memory size options (4, 8, 16 or 32Kbit) - all with external memory capability as well - 1.2Kbyte of SRAM, four I/O ports, a 32bit accumulator/shifter, dual UARTs, three timers/counters, I2C multimaster interface, SPI interface with direct memory access and a watchdog timer.

A lower-cost version without an I2C multimaster interface, the MSC1212, is also available and pin-for-pin compatible with the MSC1211 and MSC1210.

The MSC1211 and MSC1212 are packaged in TQFP-64 packages and operate on a single 2.7 to 5.25V supply.

Suggested resale pricing is based on the four Flash memory size options, and ranges from $16.15 to $19.95 in 1000-piece quantities.

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