Data acquisition

Texas Instruments today introduced a pair of low-noise, low-cost data acquisition microsystems in tiny 6mm x 6mm QFN packages.

The MSC1201 (24-bit) and MSC1202 (16-bit) integrate a very low-noise delta-sigma analog-to-digital converter (ADC), an enhanced 8051 processor core, 4kB or 8kB of flash memory, 8-bit current digital-to-analog converter, on-chip oscillator, voltage reference and a variety of high-performance peripherals.

The MSC1201 and MSC1202 offer two flash memory sizes with pin and function compatibility, thus allowing designers to migrate between devices as their code requirements change.

The noise performance of the MSC1201’s ADC is 75nV, better than most standalone ADCs on the market and significantly better than any comparable mixed-signal device. The MSC1201’s ADC also has a 1kSPS sampling rate with only 3mW of power consumption. The MSC1202’s ADC offers 16-bit noise free performance at low data rates and can run faster than 2kSPS.

The analog features consist of a 24-bit delta-sigma ADC (MSC1201) or 16-bit delta-sigma ADC (MSC1202), a flexible six-channel multiplexer, internal oscillator, PLL, 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, two flash memory size options (4K, 8K), 256 bytes of SRAM, four I/O ports, a 32-bit accumulator/shifter, UART, two timers/counters, basic I2C interface, basic SPI interface and a watchdog timer.

The MSC1201 and MSC1202 come in QFN-36 packages and are available now from TI and its authorized distributors.

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