unicore UC6226NIS-E310E2 Reference Design Download

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UC6226NIS-E310E2 (QFN40) Hardware Reference Design

Reference Design

1.1

Basic Design



External LNA



RTC Crystal



UART interface



It is recommended to use an external independent LDO to power the TCXO. The

specification of the external power should meet the requirement of the TCXO.

LNA

SAW

Main Supply: 1.2V~1.98V

IO Supply: 1.77V~1.88V

Backup Supply: 1.65V~3.6V

RF,

Short 50ohm Line

TCXO

UC6226-QFN40

Summary of Contents for UC6226NIS-E310E2

Page 2: ...of UNICORECOMM and other trade name trademark icon logo brand name and or service mark of Unicore products or their product serial referred to in this manual collectively Unicore Trademarks This manu...

Page 3: ...onsistent with such information of the specific product you purchase Should you purchase our product and encounter any inconsistency please contact us or our local authorized distributor for the most...

Page 4: ...I Contents 1 Reference Design 1 1 1 Basic Design 1 1 2 Antenna Detection 2 2 Attention 3 2 1 Power 3 2 2 RTC 4 2 3 TCXO 5 3 Recommended BOM 5...

Page 5: ...NA RTC Crystal UART interface It is recommended to use an external independent LDO to power the TCXO The specification of the external power should meet the requirement of the TCXO LNA SAW Main Supply...

Page 6: ...PCB layout the distance between the inductor L5 and the node that connects ANT_IN and the RF line should be as short as possible it is recommended to place one of the metal pads of the L5 inductor on...

Page 7: ...voltage range of VDD_IO is narrow if the two domains use the same power supply the instantaneous high current at startup may lead to voltage drop which may pull down the voltage of VDD_IO below the w...

Page 8: ...an 1 05 V or it may lead to UC6226 getting burned Level requirement for the input signal high level 0 9 V 1 05 V low level 0 V 0 2 V Waveform requirement for the clock duty cycle range should be 45 55...

Page 9: ...al rules 1 It is recommended to maintain copper void for the layer where TCXO is placed and the adjacent layers and keep the reference ground complete for other layers so as to reduce the impact of he...

Page 10: ...Unicore Communications Inc 7 F3 No 7 Fengxian East Road Haidian Beijing P R China 100094 www unicorecomm com Phone 86 10 69939800 Fax 86 10 69939888 info unicorecomm com www unicorecomm com...