Texas Instruments AFE7906 6-Channel RF Sampling Receiver
Texas Instruments AFE7906 6-Channel RF Sampling Receiver is a high-performance, wide-bandwidth multi-channel receiver integrating six RF sampling ADCs. With operation up to 12GHz, this device enables direct RF sampling in the L, S, C, and X-band frequency ranges. This feature is done without the need for additional frequency conversion stages. This improvement in flexibility and density enables high-channel-count, multi-mission systems.
Each receiver chain includes a 25dB range DSA (Digital Step Attenuator), followed by a 3GSPS ADC (analog-to-digital converter). Four receiver channels have an analog peak power detector and various digital power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. Flexible decimation options provide optimization of data bandwidth up to 1200MHz for four RX or 600MHz.
The Texas Instruments AFE7906 contains a SYSREF timing detector to allow optimization of the SYSREF input timing relative to the device clock.
Features
- Six RF sampling 14-bit, 3GSPS ADCs
- Maximum RF signal bandwidth
- Four ADCs: 1200MHz per ADC
- Six ADCs: 600MHz per ADC
- 5MHz to 12GHz RF frequency range
- Digital step attenuators (DSA) of 25dB range, 0.5dB steps
- Single DDC (on 6-channels) or dual-band DDCs (on 4-channels)
- 16x NCOs per DDC channel
- Optional internal PLL/VCO for ADC clocks or external clock at ADC sample rate
- Sysref alignment detector
- SerDes data interface
- JESD204B and JESD204C compatible
- Eight SerDes transmitters up to 29.5Gbps
- Subclass 1 multi-device synchronzation
- 17mm × 17mm FCBGA, 0.8mm pitch package
Applications
- Radar
- Seeker front end
- Defense radio
- Wireless communications test
Functional Block Diagram
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