LTC Intros New LTC2449 Delta-Sigma ADC

Linear Technology Corp. (LTC, Milpitas, CA) introduced the new LTC2449, an 8 kHz, 16-channel, delta-sigma, analog-to-digital converter (ADC), which provides accuracy, precision and drift. The LTC2449 reduces the cost and increases the performance of precision designs by automatically calibrating and removing offsets and drifts from the entire external analog signal chain.

The LTC2449's programmable filter enables designers to tailor 20 different speed/resolution combinations to individual channels. For low-frequency sensors such as RTDs, thermocouples and strain gauges, the ADC provides 200 nV noise, 500,000 counts on a ±50 mV sensor output (or 25 million counts on a full scale input), and simultaneous 50 Hz and 60 Hz line-frequency noise rejection. For high-speed sampling, the ADC provides over 17 effective bits at 8 kHz output rates.

The LTC2444/LTC2445/LTC2448/LTC2449 are offered in a 38-pin QFN package, screened for industrial and commercial temperature ranges. Pricing starts at $6.45 each for the LTC2444, $6.45 each for the LTC2445, $7.15 each for the LTC2448 and $7.15 each for the LTC2449, each in 1,000-piece quantities.