1. H = HIGH voltage level h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition L = LOW voltage level I = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition q = lower case letters indicate the state of the referenced input (or output) one set-up time prior to the LOW-to-HIGH CP transition X = dont care Z = high impedance OFF-state = LOW-to-HIGH CP transition
This pin is the ground pin for the entire chip. Therefore the ground of the IF downconverter and IF amplifier blocks are not separated. The ground pattern to be connected to this pin should be formed as wide as possible to minimize its impedance.
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The AD7715 is ideal for use in smart, microcontroller or DSP based systems. It features a serial interface that can be config- ured for three-wire operation. Gain settings, signal polarity and update rate selection can be configured in software using the input serial port. The part contains self-calibration and system calibration options to eliminate gain and offset errors on the part itself or in the system.
Strahlstärke Ie in Achsrichtung gemessen bei einem Raumwinkel Ω = 0.001 sr bei SFH 484 bzw. Ω = 0.01 sr bei SFH 485 Grouping of radiant intensity Ie in axial direction at a solid angle of Ω = 0.001 sr at SFH 484 or Ω = 0.01 sr at SFH 485