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KMA199 Arkusz danych(PDF) 7 Page - NXP Semiconductors |
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KMA199 Arkusz danych(HTML) 7 Page - NXP Semiconductors |
7 / 36 page KMA199_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 01 — 26 April 2010 7 of 36 NXP Semiconductors KMA199 Programmable angle sensor Table 4 shows the resulting output voltage depending on the error case and the load resistance. 7.4 Low supply voltage detection If the supply voltage is below the switch-off threshold voltage, a status bit is set. Table 5 describes the behavior of the analog output at different supply voltages. Fig 4. Equivalent output circuit in case of a power-loss condition Table 4. Power-loss behavior Load resistance Supply voltage lost Ground lost RL > 5 kΩ VO ≤ 4 %VDD VO ≥ 96 %VDD 008aaa234 ZO(pl) ZO(pl) OUT/DATA GND VDD KMA199 Table 5. Supply voltage behavior Voltage range Description Analog output 0 V to ≈ 1.5 V the output drives an active LOW, but the switches of the power-loss detection circuits are not fully opened and set the output to a level between ground and half the supply voltage actively driven output to a voltage level between ground and half the supply voltage ≈ 1.5 V to V POR all modules begin to work and the power-on reset is active diagnostics at LOW level VPOR to Vth(on) or Vth(off) all modules begin to work and the digital part is initialized EEPROM defined diagnostic level Vth(on) or Vth(off) to 4.5 V analog output is switched on after power-on time and represents the measured angle analog output of the measured angle without the specified accuracy 4.5 V to 5.5 V normal operation where the sensor works with the specified accuracy analog output of the measured angle |
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