 |
Moteur de recherche de fiches techniques de composants électroniques |
|
|
Moteur de recherche de fiches techniques de composants électroniques |
|
PN7360AUHN Fiches technique(PDF) 34 Page - NXP Semiconductors |
|
||||||||||||||||||||||||||||||
PN7360AUHN Fiches technique(HTML) 34 Page - NXP Semiconductors |
|
|
34 / 86 page  PN746X_736X 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. 3.1 — 5 April 2016 369231 34 of 86 NXP Semiconductors PN746X_736X NFC Cortex-M0 microcontroller The down-mixed differential RX input signals are passed to the BBA and a band-pass filter. For considering all the protocols (type A/B, FeliCa), the high-pass cut-off frequency of BBA is configured between 45 kHz and 250 kHz. The configuration is done in four different steps. The low-pass cut-off frequency is greater than 2 MHz. The output of band-pass filter is further amplified with a gain factor which is configurable between 30 dB and 60 dB. The baseband amplifier (BBA)/ADC I-channel and Q-channel can be enabled separately. It is required for ADC-based card mode functionality as only the I-channel is used in this case. VMID: A resistive divider between AVDD and GND generates VMID. The resistive divider is connected to the VMID pin. An external blocking capacitor of typical value 100 nF is connected. Automatic Gain Control (AGC): The contactless interface AGC is used to control the amplitude of 13.56 MHz sine‐wave input signal received. The signal is received at the antenna connected between the pins RXP and RXN. A comparator is used to compare the peak value of the input signal with a reference voltage. A voltage divider circuit is used to generate the reference voltage. An external resistor (typically 3.3 k) is connected to the RX input, which forms a voltage divider with an on‐chip variable resistor. The voltage divider circuit so formed has a 10‐bit resolution. Note: The comparator monitors the RXP signal only. By varying the on-chip resistor, the amplitude of the input signal can be modified. The value of on-chip resistor is increased or decreased, depending on the output of the sampled comparator. The on-chip resistor value is adjusted until the peak of the input signal matches the reference voltage. Thus, the AGC circuit automatically controls the amplitude of the RX input. The internal amplitude controlling resistor in the AGC has a default value of 10 K . It means that, when the resistor control bits in AGC_VALUE_REG <9:0> are all 0, the resistance is 10 K . As the control bits are increased, resistors are switched in parallel to the 10 K resistor. It lowers the resultant resistance value to 5 k (AGC_VALUE_REG <9:0>, all bits set to 1). Mode detector: The mode detector is a functional block of the PN7462 which senses for an RF field generated by another device. The mode detector facilitates to distinguish between type A and Felica target mode. The host responds depending on the recognized protocol generated by an initiator peer device. Fig 22. Receiver block diagram |
Numéro de pièce similaire - PN7360AUHN |
|
Description similaire - PN7360AUHN |
|
|
Lien URL |
| Politique de confidentialité |
| ALLDATASHEET.FR |
| ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
French ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
