LTC1278

LTC1278 12-Bit, 500ksps Sampling A/D Converter with Shutdown FEATURES s s DESCRIPTIO s s s s s s s s s s Single Supply 5V or ± 5V Operation Two Speed Grades,500ksps (LTC1278-5) 400ksps (LTC1278-4) 70dB S/(N + D) and 74dB THD at Nyquist No Missing Codes Over Temperature 75mW (Typ) Power Dissipation Power Shutdown with Instant Wake-Up Internal Reference Can Be Overdriven Externally Internal Synchronized Clock; No Clock Required High Impedance Analog Input 0V to 5V or ± 2.5V Input Range New Flexible, Friendly Parallel Interface to DSPs and FIFOs 24-Pin Narrow PDIP and SW Packages The LTC®1278 is a 1.6µs, 500ksps, sampling 12-bit A/D converter that draws only 75mW from a single 5V or ± 5V supplies. This easy-to-use device comes complete with a 200ns sample-and-hold, a precision reference and an internally trimmed clock. Unipolar and bipolar conversion modes add to the flexibility of the ADC. The low power dissipation is made even more attractive by a 8.5mW power-down feature. Instant wake-up from shutdown allows the converter to be powered down even during brief inactive periods. The LTC1278 converts 0V to 5V unipolar inputs from a single 5V supply and ± 2.5V bipolar inputs from ± 5V supplies. Maximum DC specs include ± 1LSB INL and ± 1LSB DNL. Outstanding guaranteed AC performance includes 70dB S/(N + D) and 78dB THD at the input frequency of 100kHz over temperature. The internal clock is trimmed for 1.6µs conversion time. The clock automatically synchronizes to each sampl...