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KMA200 Datenblatt(PDF) 8 Page - NXP Semiconductors |
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KMA200 Datenblatt(HTML) 8 Page - NXP Semiconductors |
8 / 31 page 9397 750 11399 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 05 — 16 August 2005 8 of 31 Philips Semiconductors KMA200 Programmable angle sensor 7. Outputs of KMA200 The output of the KMA200 is either digital or analog, depending on the control word stored in the EEPROM. The analog output consists of a standard and a programmable output stage. The programmable output stage allows four different characteristics; mode 1, mode 2, mode 3 or none output. The digital output has two different modes; mode 5 and mode 6. Analog output In the analog output mode the measured angle value is converted linear into a value that is ratio metric to the supply voltage VDD. This voltage is driven by the standard output stage to pin OUT1. The same value is fed to a second output stage that is connected to pin OUT2. This second output stage is programmable to one of four different output characteristics; mode 1, mode 2, mode 3 or high-impedance state output. A valid angle value is nominally mapped to an output voltage range of V(CL)l (default = 5 %) to V(CL)u (default = 95 %) of VDD at the standard output VOUT1 (see Figure 3). For mode 1 the valid output voltage range at pin OUT2 is identical to the output voltage range of the standard analog voltage but the output characteristic is inverted (see Figure 4). In mode 2 (see Figure 5) the valid output range at pin OUT2 is nominally V(CL)l/2 to V(CL)u/2 of VDD. A further possibility is to program the VOUT2 (mode 3, αthresh) as a comparator depending from the angle value (see Figure 6). When the KMA200 detects an error condition, it switches the analog outputs into high-impedance state. The outputs are forced to lie in the upper or lower diagnostic range by the external pull-up or pull-down resistors. Table 5: Setting the KMA200 output characteristics Output characteristics Pin assignment Mode setting of EEPROM (ctrl1) Mode Type DATA/OUT1 CLK/OUT2 OM2 OM1 OM0 Mode 1 analog standard inverted 1 0 0 Mode 2 analog standard half range 1 0 1 Mode 3 analog standard comparator 1 1 0 Mode 4 analog standard high-impedance state 111 Mode 5 digital serial data (SPI) (clock) 0 0 0 Mode 6 digital bit complement serial data (SPI) (clock) 0 0 1 |
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