PICs integrate analogue signal chain with 16-bit converters

September 16, 2013 // By Graham Prophet
Microchip says that its latest PIC microcontroller is its first to integrate a 16-bit ADC, 10 Msps ADC, DAC, USB and LCD on a single device. The PIC24FJ128GC010 provides intelligent analogue and Microchip's eXtreme Low Power (XLP) for portable medical and industrial applications; it includes Microchip’s first on-chip precision 16-bit ADC.

This PIC family is an analogue system on a chip that integrates a full analogue signal chain, including precision 16-bit ADC and 10 Msps 12-bit ADC, plus a DAC and dual operational amplifiers (Op Amps), along with eXtreme Low Power (XLP) technology for extended battery life in portable medical and industrial applications.

This combination of analogue integration and low power consumption, the company says, reduces system cost and noise, and improves signal throughput in applications which include portable medical monitoring devices such as blood glucose meters and blood pressure monitors; as well as industrial applications and portable monitoring devices, such as voltage and current monitors, gas sensors and high-speed sensor arrays. The chip family includes an integrated LCD display driver that provides the ability to drive up to 472 segments with displays that include scrolling alphanumeric banners. Integrated USB supports the uploading of clinical data for medical equipment and can act as a service/data port for industrial equipment. Capacitive touch sensing is supported with an on-chip mTouch peripheral.

Microchip asserts that the integration of a 16-bit ADC, USB and LCD into a single low-power MCU allows for very small form-factor battery-powered applications, and represents a significant cost reduction over a multi-chip implementation

The PIC24FJ128GC010 family is supported by Microchip’s Starter Kit for PIC24F Intelligent.Integrated.Analog (DM240015) which is being offered for a special introductory price of $89.99 for a limited time. This kit is focused on the family’s integrated analogue to preserve signal integrity. It provides 95% of what designers need to develop a handheld analogue prototype - all they need to do is add sensors.

PIC24FJ128GC010 (128 kB Flash) and PIC24FJ64GC010 (64 kB Flash) are available in 100-pin TQFP and 121-pin BGA packages. PIC24FJ128GC006 (128 kB Flash) and PIC24FJ64GC006 (64 kB Flash) are available in 64-pin TQFP and QFN packages.

Microchip; www.microchip.com/get/6T4J