A7105

A7105是一低成本且適用於2.4GHz ISM频段的無線應用的射频晶片。7105内含高靈敏度的接收器(250Kbps@ - 99dbm)以及高效率的功率放大器，很適合30米以内的應用。 A7105的工作频率是可以程式化設置，最高為500Kbps。在數位介面部份，有支援4pin(SPI)或3pin控制，另外在RF data的處理有2種模式可供選擇：FIFO(利用RF内部的memory先存要發射/接收的data)，Direct(直接發射/接收)。在FIFO模式下，也支援CRC(CRC16)，FEC(約可增加靈敏度1~2dbm)，data whitening(可視data加密)，Manchester code的解碼。 A7105内建，RSSI，溫度的sensor，來值測環境對RFIC的影響，而且也内建1ch ADC可值測使用電壓。内建無線唤醒機制，可延長電池壽命。封裝QFN4X4 20pin。

• Frequency bands: 2400 - 2483MHz ISM band.
• FSK and GFSK調
• FSw current consumption: RX: 16 mA
• Low current consumption: TX: 19 mA (output power 0dBm)
• Programmable RF output power: up to 0 dBm.
• On chip regulator, supply voltage 1.9 ~ 3.6V
• On chip low power RC oscillator.
• Low current (< 1uA) in sleep mode and need only one crystal while working together with MCU.
• High sensitivity (- 99dBm@250Kbps, - 96dBm@500Kbps)
• Programmable data rate up to 500Kbps
• Support 4 - wire(SPI) or 3 - wire interface to access FIFO data, command and register setting
• Package handling hardware includes preamble, sync word, FEC, CRC data whitening and manchester coding.
• Separate 64 - byte RX and TX FIFOs
• Support FIFO extension function and up to 256 bytes.
• Easy to use with an low cost MCU
• Fast settling time synthesizer for frequency hopping system.
• Digital RSSI output for clear channel indication
• Digital temperature output
• Build in 1 channel ADC for detect external analog element.
• Build in WWS(wireless wakeup system) for reduce power consumption of battery.
• Support Frequency compensation scheme to make use the low cost (low accuracy) crystal.

• 無線資料傳輸
• 無線遙控
• 無線健盤、滑鼠
• 家庭自動化系統
• 無線玩具、游戲
• 2.4GHz ISM频段通信系統