EVB90314;中文规格书,Datasheet资料.pdf

Application Note DK90308 / DK90314 Evaluation Kit Scope The DK90308 and DK90314 provide a communications interface between the device and PC. All necessary components for implementing the three application circuits with the user’s bridge sensor are on board. This document describes the board itself and setup of the common application circuits for the DK90308 and DK90314 Evaluation kit. Related Products and Tools MLX90308 Programmable Sensor Interface MLX90314 Programmable Sensor Interface SW90308 Software for MLX90308CCC and MLX90314AB 90308CCC90314AB UsersManual.pdf WWW.MELEXIS.COM Applications Absolute Voltage Output Mode : The device uses an external FET to regulate the supply voltage. The supply voltage is supplied from J2 thru JP3 to VDD1, then the device regulates +5V on VDD using the onboard FET giving a stable output over varied supply voltage. Ratiometric Voltage Output Mode: In this application the output follows the supply voltage; this is used when the device output is tied to an A/D converter sharing the same supply and ground reference. A 4 .5V to 5.2 V supply voltage is supplied thru VDD and VDD1 tied together. JP3 MUST BE OPEN FOR THIS MODE to avoid permanent damage to the ch ip. Current Output Mode: In Current Mode the device supplies a 4 to 20mA current range for use as a 2-wire analog sensor. VDD is regulated by the onboard FET from the supply (7V to 35V) thru VDD1. JP3 must be open to separate the inter