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Analogue Frontend Overview
MSP stands for mixed signal processor. Mixed signal means combination of both analogue and digital.
We can, therefore, expect a great deal of cool stuffs when it comes to their analogue features. Chips
vary in features and so do the analogue peripherals. There are various types of analogue peripherals
offered by MSP430s and we can categorize them into four basic categories:
Analogue-to-Digital Converters (ADC)
ADC are used to measure time-varying voltages. They digitize analogue signals by representing them
in quantized binary formats. The most common ADCs in MSP430s are ADC10 and ADC12. These are
Successive Approximation (SAR) ADCs. Both of these ADCs are similar in many aspects except in
resolution. Some MSP430 devices have more advanced high-resolution delta-sigma ADCs like SD16_A
and SD24_A. All MSP430s additionally have internal temperature sensors.
Digital-to-Analogue Converters (DAC)
DACs are opposites of ADCs. They give variable voltage output with respect to binary inputs and can
be used to generate waveforms, audio signals, wave patterns, control actuator and power supplies,
etc. 12-bit DACs - DAC12 are available in some advanced MSP430 devices.
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