18-bit 1.6-MSPS SAR ADC achieves best SNR performance

18-bit 1.6-MSPS SAR ADC achieves best SNR performance

The LTC2379-18 serial 18-bit 1.6-Msample/s SAR A/D converter is claimed to achieve a breakthrough performance with a 101-dB SNR and –118-dB THD while supporting a fully differential ±5-V input range. The part also features a maximum INL of ±2 LSB with no missing codes, guaranteed specifications over the –40° to 125°C temperature range, no pipeline delay, and no cycle latency.

In addition, the part’s high SNR, fast throughput, and low power dissipation suit it for high-performance medical, industrial, and automotive applications. Available in a 3 x 4-mm DFN and MSOP-16 package, the part operates at 2.5 V and consumes 18 mW.

Complementing the LTC2379-18 is the pin- and software-compatible 16-bit, 2-Msample/s LTC2380-16. The LTC2380-16 achieves a 96-dB SNR and ±0.5-LSB maximum INL. In addition, both ADCs offer what is claimed to be a revolutionary new digital gain compression feature that eliminates the need for a negative supply on the ADC driver, dramatically lowering the total power consumption of the signal chain. The devices’ shutdown mode further reduces power dissipation to 1.25 µW when idle. (Ea/1,000: LTC2379-18, $29.95; LTC2380-16, $24.50 — available now.)

Linear Technology , Milpitas , CA
Sales Office 408-428-2050
www.linear.com