1. General Description
The A7105 is a low cost single chip 2.4GHz transceiver. With on chip fraction-N synthesizer, it can support the application of data rate up to 500KHz and frequency hopping system. A7105 also supports the packet handling, data FIFO, error forward correction and SPI interface. That makes A7105 easy to be used together with a low cost and low speed micro-controller. The device is in QFN4X4 20 pin package.
Feature
- Frequency band: 2400 – 2483MHz.
- FSK and GFSK modulation
- Low current consumption for (RX 16mA, TX 19mA)
- On chip regulator
- Supply voltage 1.9 – 3.6 V
- On chip low power RC oscillator
- High sensitivity (-96Bm at 500KHz data rate)
- Programmable data rate up to 500kbps
- Efficient 3/4-wires SPI interface to access FIFO data, command and register setting
- Package handling hardware includes preamble, ID code word, FEC, CRC and data whitening.
- Separate 64 byte RX and TX FIFO.
- 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
- Support Frequency compensation scheme to make use the low cost (low accuracy) crystal.
- AMICCOM R.F Chip
FM Transmitter：A7303A/A7303B
2.4GHz GFSK Transceiver：A7121/A7122
2.4GHz FSK /GFSK Transceiver：A7105 /A7125
315.915MHz ASK/FSK Transceiver：A7102/A7103/A7201/A7302/A7202
FM Transmitter：A7303A/A7303B
