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Mixed Signal/Analog

16-Bit, 1Msps SAR ADC Achieves 94dB SNR, Measures Wide ±4.096V Input Range

29th September 2010

ES Admin

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Datasheet

Linear Technology has introduced the LTC2393-16, a 16-bit SAR ADC that achieves an excellent 94dB SNR at sample rates up to 1Msps with no cycle latency. Operating from a single 5V supply and supporting a wide ±4.096V input range, the LTC2393-16 is well suited for many general purpose designs that require maximum signal swings to overcome background noise levels in demanding industrial environments.

The LTC2393-16 features excellent AC performance, achieving 94dB SNR and 105dB THD. DC performance is equally impressive, featuring ±2LSB INL (max) and 16 bits no missing codes resolution. The LTC2393-16 also features a temperature-compensated internal reference with a production-tested 0.1% initial accuracy and 20ppm/°C (max) temperature coefficient over the automotive and industrial temperature ranges. The LTC2393-16 dissipates 140mW at 1Msps and features a shutdown mode that reduces power dissipation to 175µW when not converting. True no latency operation enables accurate one shot measurements even after lengthy idle periods with no minimum sample rate required. The LTC2393-16 supports 1Msps sample rates through both serial and parallel interfaces at I/O voltages from 1.8V to 5V.

The LTC2393-16 is now available, along with the LTC2392-16 (500ksps) and LTC2391-16 (250ksps) pin- and software-compatible ADCs in 48-pin 7mm x 7mm LQFP and QFN packages, with guaranteed specifications tested over the commercial, industrial and automotive temperature ranges. To achieve uncompromised AC performance, we recommend the fast settling, LT6350 ADC driver with rail-to-rail input and differential outputs.