Kunteng full duplex digital wireless transceiver chip kt1605 / kt1606 / kt1607 / kt1608 is suitable for interphone scheme

   [ Tianhui Micro Technology ](http://www.audiowin.cn) Kunteng full duplex is adopted UHF Digital transceiver chip KT1605/KT1606/KT1607/KT1608 It is a highly integrated transceiver chip , Working in 55MHz~960MHz Frequency band , The voltage range is 2.0~3.6V, The temperature range is -30℃~85℃. The receiving sensitivity of the shuffled chip is less than -95db, The audio dynamic range is greater than 110db, Frequency response 20~20Khz. Its working mode includes operation mode 、 Shutdown mode 、 There are three semi sleep modes . Less than... In operating mode 70ma(CPU:192MHZ CDD:3.3V) The following focuses on its digital auxiliary channel and transceiver switching function （ Full duplex mode ）.

Digital auxiliary channel function

KT1605/KT1606/KT1607/KT1608 Provide digital auxiliary channel function , He can define specific information and transmit it with audio signals , The carrier channel of the digital auxiliary channel can be turned on or off by setting the register .

There are two application modes of digital auxiliary channel

Circulation patterns ： In this mode, there are at most 4 Data from an internal register , The number of registers to be transferred can be determined by setting .

Burst mode ： In this mode, the transmitted data is the value of the burst register , Every time you change the value of the burst mode register , New data will be sent once .

Transmit and receive switch （ Full duplex mode ）

KT1605/KT1606/KT1607/KT1608 Integrated low noise amplifier and RF amplifier , It also integrates audio ADC And audio , With transceiver switching function .

KT1605/KT1606/KT1607/KT1608 Can be done TX and RX Two way communication , Columns such as RX It can send frequency band information and equipment information to the transmitting chip , The transmitting chip can do corresponding processing according to the information of the receiving chip , And return to the receiving chip , At the same time, the receiving chip performs corresponding processing according to the received data .

Fully integrated features

Integrated low noise RF front end 、 Integrated modem 、 Integrated audio DSP、 Integrated high RF PA、 Integrated high performance DAC、

Other features

KT1605/KT1606/KT1607/KT1608 In addition to the digital auxiliary channel function and full duplex mode mentioned above , It also has a digital audio input and output interface 、 The transmitting power is adjustable 、 Modulation broadband adjustable 、 Automatic frequency control （AFC） Configurable auto mute function 、 Automatically sleep and support audio wake-up 、 Intelligent frequency matching and intelligent frequency selection 、 Turn on bi-directional frequency matching to avoid interference 、 Built in battery voltage detection and alarm circuit 、 Upper computer UART signal communication .