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OM25180FDKM Datasheet(PDF) 66 Page - NXP Semiconductors |
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OM25180FDKM Datasheet(HTML) 66 Page - NXP Semiconductors |
66 / 149 page PN5180 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved. Product data sheet COMPANY PUBLIC Rev. 3.0 — 7 October 2016 240930 66 of 149 NXP Semiconductors PN5180 High-performance multi-protocol full NFC Forum-compliant frontend The AGC value is compared to a maximum and minimum threshold value which is stored in EEPROM. If the AGC value is exceeding one of the thresholds, a new gear configuring another transmitter supply driver voltage will be activated. The number of gears - and by these transmitter supply voltage configurations - can be defined by the application, up to 15 gears are available. Fig 33. Lookup tables for AGC value-dependent dynamic configuration Fig 34. Transmitter supply voltage configuration, VDD(TVDD) > 3.5 V PWR LUT ENTRY 1 DPC_AGC_GEAR_LUT PWR LUT ENTRY 2 PWR LUT ENTRY 3 PWR LUT ENTRY 4 PWR LUT ENTRY 5 PWR LUT ENTRY X GEAR AGC VALUE DPC_THRSH_HIGH DPC_THRISH_LOW aaa-019796 aaa-019385 TX_CW_TO_MAX_RM -150 mV VTVDD -250 mV -500 mV -1.0 V TX_CW_AMP_REF2TVDD TX driver supply TX_CW_AMPLITUDE_RM <1:0> 1 00 00 11 11 10 01 10 01 0 1 0 3.0 V 2.75 V 2.5 V 2.0 V |
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