| Title: | LTC2644IMS-L12 |
| Package: | MSOP-12 |
| Description: | The LTC®2644 is a family of dual 12-, 10-, and 8-bit PWMto-voltage output DACs with an integrated high accuracy, lowdrift, 10ppm/°C referencein a 12-leadMSOPpackage. It has rail-to-railoutputbuffers andisguaranteedmonotonic. The LTC2644 measures the period and pulse width of the PWM input signals and updates the voltage output DACs after each corresponding PWM input rising edge. The DAC outputs update and settle to 12-bit accuracy within 8µs typically and are capable of sourcing and sinking up to 5mA (3V) or 10mA (5V), eliminating voltage ripple and replacing slow analog filters and buffer amplifiers. The LTC2644 has a full-scale output of 2.5V using the 10ppm/°C internalreference. It canoperatewithanexternal reference, which sets the full-scale output equal to the external reference voltage. Each DAC enters a pin-selectable idle state when the PWM input is held unchanged for more than 60ms. The part operates from a single 2.7V to 5.5V supply and supports PWM input voltages from 1.71V to 5.5V. |
