Connecting an analog temperature sensor IC to an ADC input of a microcontroller
It appears that your are confusing some part of the specifications for the LMT84. According to its datasheet on pages 9 and 10, the normal operating output for the LMT84 is 183mV to 1299mV which is within the 1.4V that the ADC supports. This chip will output this voltage as long as supply voltage is within the recommended 1.5V to 5.5V and the temperature is within its rated range of -50 to 150°C.

Your resistors as shown are not required and should be removed. However depending on the total capacitance load placed on the output of the LMT84, you may need a resistor on the output as explained in the datasheet on page 12.