AFE7953
Two-transmit, two-receive, 600-MHz to 12-GHz, RF-sampling AFE with 12-GSPS DACs and 3-GSPS ADCs
AFE7953
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- Dual RF sampling 12GSPS transmit DACs
- Dual RF sampling 3GSPS receive ADCs
- Maximum RF signal bandwidth: 400MHz
- RF frequency range: 600MHz - 12GHz
- Digital step attenuators (DSA):
- TX: 40dB range, 0.125dB steps
- RX: 25dB range, 0.5dB steps
- Single or dual-band DUC or DDCs
- 16x NCOs per TX or RX
- Optional Internal PLL or VCO for DAC or ADC clocks or external clock at DAC or ADC sample rate
- 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 AFE7953 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 12GHz, this device enables direct RF sampling in the L, S, C and X-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 400 MHz of signal bandwidth per TX channel. 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 signal bandwidth of up to 400MHz per RX channel.

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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | AFE7953 2T2R RF Sampling AFE with 12GSPS DACs and 3GSPS ADCs datasheet (Rev. A) | PDF | HTML | 02 May 2025 |
Application note | AFE79XX as a Chirp Signal Generator | PDF | HTML | 10 Jul 2024 | |
Application note | AFE79xx as Single Chip Wideband Repeater Solution (Rev. A) | PDF | HTML | 30 May 2023 |
Design & development
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AFE7950EVM — AFE7950 evaluation module for four-transmit, six-receive, X-band, RF-sampling AFE
The AFE7950 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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