Description

The RDA6252 is a highly integrated single-chip transceiver from RDA Microelectronics Inc. that falls under the product category of IC Chips. It is designed for use in walkie-talkie applications and allows for the seamless translation from RF carrier to voice in the RX path and vice-versa. The chip houses a powerful digital signal processor that provides exceptional voice quality, robust performance, and flexible function options under varying reception conditions.

Specifications and features

• CMOS single-chip fully-integrated transceiver
• Fully integrated frequency synthesizer and VCO
• Support for 134MHz ~ 174MHz and 400MHz ~ 500MHz frequency bands
• 12.5KHz, 25KHz channels support
• Support for multiple XTAL clocks – 12.8/25.6Mhz and 13/26Mhz
• Digital auto frequency control (AFC)
• Digital auto gain control (AGC)
• Selectable pre/de-emphasis
• Received signal strength indicator (RSSI)
• VOX and SQ
• Build-in CTCSS/CDCSS generator and judgment
• 23/24 bit programmable DCS code
• DTMF and programmable in-band dual tone
• Programmable in-band single tone transmitter
• Auto RX/TX/SLEEP state switching
• 8 GPIOs
• 3-wire/4-wire/I2C serial control bus interface
• On chip 8 dBm PA
• Analog and digital volume control
• Directly support 32Ω resistance loading
• 3.3 to 4.8 V supply voltage with Integrated LDO
• 5X5 mm 32 pin QFN package

Application Scenarios

The RDA6252 IC Chip is ideal for use in the following:

• Cellular handsets
• Family radio services
• Walkie Talkies

Comparison

• Fully integrated frequency synthesizer and VCO
• Support for two frequency bands, enabling greater flexibility in device design and functionality
• Highly integrated design simplifies device setup, configuration, and maintenance
• Robust performance under varying reception conditions
• Flexible function options
• Exceptional voice quality

• Designed for use in limited applications, making it less versatile compared to other IC chips on the market