AFE7903
2-transmit, 2-receive RF-sampling transceiver, 5-MHz to 7.4-GHz, max 400-MHz IBW
AFE7903
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- Dual RF sampling 12GSPS transmit DACs
- Dual RF sampling 3GSPS receive ADCs
- Maximum signal bandwidth per TX or RX: 400MHz
- RF frequency range: 5MHz - 7.4GHz
- Digital step attenuators (DSA):
- TX: 40dB range, 0.125dB steps
- RX: 25dB range, 0.5dB steps
- Single or dual-band DUC/DDCs for TX and RX
- 16x NCOs per TX/RX
- Optional Internal PLL/VCO for DAC/ADC clocks or external clock at DAC or ADC sample rate
- Sysref Alignment Detector
- SerDes data interface:
- JESD204B and JESD204C compatible
- 8 SerDes transceivers up to 29.5Gbps
- Subclass 1 multi-device synchronization
- Package: 17mm × 17mm FCBGA, 0.8mm pitch
The AFE7903 is a high performance, wide bandwidth multi-channel transceiver, integrating two RF sampling transmitter chains and two RF sampling receiver chains. With operation up to 7.4GHz, this device enables direct RF sampling in the HF, VHF, UHF, L, S and C-band frequency ranges without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multi-mission systems.
The TX signal paths support interpolation and digital up conversion options that deliver up to 400MHz of signal bandwidth. The output of the DUCs drives a 12GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40dB range and 1dB analog and 0.125dB digital steps.
Each receiver chain includes a 25dB range DSA (Digital Step Attenuator), followed by a 3GSPS ADC (analog-to-digital converter). Each receiver channel has 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 400MHz for two RX.
The device contains a SYSREF timing detector to allow optimization of the SYSREF input timing relative to the device clock.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | AFE7903 2T2R 5-MHz to 7.4GHz RF Sampling AFE with 12GSPS DACs and 3GSPS ADCs, 400MHz IBW datasheet (Rev. C) | PDF | HTML | 02 May 2025 |
Application note | AFE79XX as a Chirp Signal Generator | PDF | HTML | 10 Jul 2024 | |
User guide | AFE79xx SPI Bringup Guide With Xilinx FPGAs (Rev. A) | PDF | HTML | 05 May 2024 | |
Application note | AFE79xx as Single Chip Wideband Repeater Solution (Rev. A) | PDF | HTML | 30 May 2023 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
AFE7900EVM — AFE7900 evaluation module for four-transmit, six-receive, 5-MHz to 7400-MHz, RF-sampling AFE
The AFE7900 family evaluation module (EVM) is a flexible RF-sampling transceiver platform that can be configured to support up to four-transmit, four-receive, and two-feedback (4T4R+2FB) channels simultaneously. The EVM interfaces with the TI pattern/capture card solution shown below (sold (...)
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
FCBGA (ABJ) | 400 | Ultra Librarian |
FCBGA (ALK) | 400 | Ultra Librarian |
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