LTC2645CMS-L10#PBF

LTC2645CMS-L10#PBF is a quad, 10bit PWM-to-voltage output DAC. LTC2645 has rail-to-rail output buffers and is guaranteed monotonic. The LTC2645 measures the period and pulse width of the PWM input signals and updates the voltage output DACs after each corresponding PWM input rising edge. It has a full-scale output of 2.5V using the 10ppm/°C internal reference. It can operate with an external 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. Applications include digital calibration, trimming and adjustment, level setting, process control and industrial automation, instrumentation, and automotive.

• 2.5V full scale voltage, internal reference mode, 10bit resolution
• Supply voltage range from 2.7V to 5.5V, input voltage range from 1.71V to 5.5V
• Guaranteed monotonic, no latency PWM-to-voltage conversion
• Integral nonlinearity is ±0.2LSB typical at (VCC = 3V, internal ref, TA = 25°C)
• Differential nonlinearity is ±0.5LSB max at (VCC = 3V, internal ref, TA = 25°C)
• Gain error is ±0.2%FSR typical at (VCC = 3V, internal ref, TA = 25°C)
• Power supply rejection ratio is -80dB typical at (VCC = 3V ±10% or 5V ±10%)
• Supply current is 4mA typical at (VCC = 3V, internal reference, TA = 25°C)
• Output voltage noise is 35µVP-P typical at (0.1Hz to 10Hz, external reference)
• Commercial temperature range from 0°C to 70°C, 16-lead MSOP package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party