AUCTUS AT1846S
The AT1846S is a highly integrated single-chip transceiver for Walkie Talkie applications. It totally realizes the translation from RF carrier to voice in the RX path and from voice to RF carrier in the TX path, requiring only one micro controller. The AT1846S has a powerful digital signal processor, which makes it have optimum voice quality, flexible function options, and robust performance under varying reception conditions.GENERAL DESCRIPTION
The AT1846S can be tuned to the worldwide frequency band for Walkie Talkie from 400MHz to 500MHz and especially from 134MHz to 174MHz which meets the frequency band of weather broadcast. The transceiver uses the CMOS process with a package size of 5X5mm. By virtue of its high integration, it requires the least external components and eliminates the complicated design of sensitive RF circuits on PCB. GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7 AVDD SCLK SDIO AVDD XTAL1 XTAL2 MODE SENB 32 31 30 29 28 27 26 25 1 24 2 23 3 22 4 GND 21 5 PAD 20 6 19 7 18 8 17 9 10 11 12 13 14 15 16 PDN AVDD PABIAS AVDD NC NC RFOUT NC AFOUT NC MIC_IN Cc AVDD NC RFIN AVDD Figure 1.1 AT1846S Top View 1.1FEATURES
● CMOS single-chip fully-integrated transceiver● Fully integrated frequency synthesizer and VCO
● Support worldwide frequency band
● AT1846S :134MHz ~ 174MHz 200MHz ~ 260MHz 400MHz ~ 520MHz
● AT1846SD :320MHz ~ 400MHz
● 12.5KHz, 25KHz channels
● Support multiple XTAL clocks
●...