• Product introduction

LTC2641-14

LTC2641-14 - 14-bit Vout DAC in a 3mm × 3mm DFN package

peculiarity

• Slim 3mm x 3mm 8-pin DFN package
• 16-bit INL error maximum: ±1LSB over temperature
• Low supply current: 120μA
• Monotony is guaranteed over the entire temperature range
• Low 0.5nV • sec interference pulse
• 2.7V to 5.5V single-supply operation
• Fast settling time of 1μs to 16 bits
• The unbuffered voltage output drives a 60k load directly
• 50MHz SPI^TM/QSPI^TM/MICROWIRE^TMCompatible serial interface
• Power-On Reset clears DAC Output to Zero Scale (LTC2641) or Intermediate Scale (LTC2642)
• Schmitt-Trigger input for the direct optocoupler interface
• asynchronousCLRPins
• 8-Lead MSOP, 3mm × 3mm DFN and 8-Lead SO Package (LTC2641)
• 10-Lead MSOP and 3mm × 3mm DFN Package (LTC2642)
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description

LTC^®The 2641/LTC2642 are 16-, 14- and 12-bit unbuffered voltage output DAC families. These DACs operate from a single 2.7V to 5.5V supply and are guaranteed monotonic over temperature. The LTC2641A-16/LTC2642A-16 offer 16-bit performance over temperature (±2LSB INL and ±1LSB DNL). The unbuffered DAC output results in a low supply current of 120μA and a low offset error of ±1LSB.

The LTC2641 and LTC2642 each have a 2V to V_DDThe reference input range of . V_OUTThe swing is 0V to V_REF。 For bipolar operation, the LTC2642 includes matching resistors for an external precision op amp such as the LT1678 and at R_FByields an ±V_REFOutput swing.

THE LTC2641/LTC2642 USE A SIMPLE SPI/MICROWIRE COMPATIBLE 3-WIRE SERIAL INTERFACE THAT CAN OPERATE AT CLOCK RATES UP TO 50UMHz and can be connected directly to optocouplers for applications requiring isolation. At initial power-up, the power-on reset circuit clears the DAC output of the LTC2641 to zero scale and the DAC output of the LTC2642 to the middle scale.CLRA logic low on the pin will asynchronously clear the DAC to zero scale (LTC2641) or intermediate scale (LTC2642). These DACs are available in the range of commercial and industrial specifications.