Smallest HART Modem IC Minimizes System Size and Power Consumption
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Tiny, Low-Power HART Modem IC Reduces System Size

SUNNYVALE, CA—April 23, 2009—Maxim Integrated Products (NASDAQ: MXIM) introduces the DS8500, a single-chip, HART-compliant modem IC that enables the smallest solution size for modulating and demodulating 1.1kHz/2.2kHz FSK signals. This device integrates an ADC and state machine to implement the digital filter required to eliminate noise from the HART signal. The built-in digital filter minimizes the number of external components while ensuring reliable signal detection in noisy industrial environments. A simple, single-pole, lowpass/highpass RC filter is all that is required externally. Additionally, the DS8500 features a low, 285μA (max) active-mode current for applications in which low power consumption is critical. Packaged in a space-saving TQFN, the DS8500 is ideal for space-constrained, 4–20mA current-loop applications.

The DS8500 operates from 2.7V to 3.6V, and is fully specified over the -40°C to +85°C extended temperature range. It is available in a lead-free, 5mm x 5mm x 0.8mm, 20-pin TQFN package. Pricing starts at $4.10 (1000-up, FOB USA).

Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company reported revenue in excess of $2 billion for fiscal 2008. Maxim was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, it has developed over 5900 products serving the industrial, communications, consumer, and computing markets.