Communications
HART Modem IC Minimizes System Size and Power Consumption
Maxim has introduced 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 siThe DS8500 operates from 2.7V to 3.6V, and is fully specified over the -40 degrees Celsius to +85 degrees Celsius 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).