文件名称：高灵敏度接收芯片
文件大小：1.16MB
文件格式：PDF
更新时间：2016-09-15 11:04:48
无线接收芯片
MCP201 is a very easy-to-use CMOS RF Receiver for sub 1GHz license free ISM band (315/434MHz). It is a FSK/ASK single chip RF receiver with high sensitivity receiver (-110dBm @ 2.4Kbps, 315/433.92MHz ASK/FSK). This device integrates a double balanced image reject mixer, low IF frequency (424KHz) architecture, IF filter, I/Q limiter with RSSI generation, as well as a fully VCO and PLL synthesizer. MCP201's carrier frequency FRF is determined by the frequency of the reference crystal FXTAL. The integer-N PLL synthesizer ensures that each RF value, ranging from 310 MHz to 318 MHz and 420 MHz to 447 MHz with PLL steps of 848KHz, can be achieved. This is done by using a crystal as a reference frequency according to: FRF = FXTAL x N / 2R, where N is the PLL feedback divider ratio and R is crystal divider to support 13.5732MHz crystal. Besides, MCP201 supports AIF (Auto IF) function, user has no need to consider IF offset between TX and RX, but, use this formula ( FRF = FXTAL x N / 2R ) directly to calculate radio frequency in both TX and RX site. MCP201 supports ASK data rate from 1K to 10Kbps and FSK from 1K to 20Kbps which is determined via external capacitors applied on data filter and data slicer. In FSK modulation, recommend to let input modulated signal be ± 12.5KHz frequency deviation (Fdev). In ASK modulation, Fdev is not a necessary part. For easy-to-use, MCP201 has only two control registers, register 0 and 1. MCU can configure two registers via 3-wire SPI bus. In addition to SPI control mode, MCP201 has a special mode called HW control mode. In HW control mode, user just needs to apply pin setting. Then radio control is done (register 0 and register 1 are in default values). No matter HW or SPI control mode, MCP201 is very easy to use by a low cost MCU or decoder. Those features are all integrated in a small QFN 4x4- 20 pins package.