AFE7958
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- Four RF sampling 12GSPS DACs
- Six RF sampling 3GSPS ADCs
- Maximum RF signal bandwidth:
- 4TX: 1200 MHz; 2TX: 2400MHz
- 4RX: 1200 MHz; 6RX: 600MHz
- RF frequency range:
- TX: 600MHz to 12GHz
- RX: 5MHz to 12GHz
- Digital step attenuators (DSA):
- TX: 39dB range, 0.125dB steps
- RX: 25dB range, 0.5dB steps
- Digital Up-Converters (DUC) and Digital Down-Converters (DDC): Fast frequency hopping using 16 pre-configurable Numerically Controlled Oscillators (NCOs) in DDC and DUC
- Flexible clocking options:
- External RF clock
- Internal PLL mode with low speed input clock
- SerDes data interface:
- JESD204B and JESD204C compatible
- TX: 8 lanes, RX/FB: 8 lanes, up to 24.75Gbps
- Subclass 1 multi-device synchronization
- SYSREF alignment detector
- Package: 17mm × 17mm FCBGA, 0.8mm pitch
The AFE7958 is a high performance, wide bandwidth multi-channel transceiver, integrating four (4T) RF sampling transmitter (TX) chains and a total of six (6R) RF sampling receivers. With operation up to 12GHz, the AFE enables direct RF sampling in the L, S, C and X-band frequency ranges without the need for additional frequency conversions stages. This high density and configurability enables high-channel-count, multi-mission systems.
The TX and RX interface data rates can be chosen based on signal bandwidths, and is limited by the JESD204B/C interface speed. The data streams are matched to the DAC update rate or to the ADC conversion rate using interpolation in the DUC or decimation in the DDC.
The DAC runs at a maximum rate of 12GSPS, and has a mode to operate in the 2nd Nyquist, enabling the generation of RF signals up to 12GHz. A variable gain amplifier (termed as TDSA) enables changing the power output from the transmitter.
Each receive chain has a Digital Step Attenuator (RDSA) followed by a 3GSPS ADC which can convert higher Nyquist zones to digitize RF signals up to a maximum of 12GHz. Digital peak detectors at the ADC output can be configured to assist an external Automatic Gain control (AGC) loop to control LNA (external) gain and DSA (internal) attenuation.
The AFE7958 can be programmed using the SPI interface. The device also has several GPIOs that can be configured to provide interrupts and to achieve a fast control of functions like NCO switching.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | AFE7958 4T6R RF Sampling AFE with 12GSPS DACs and 3GSPS ADCs datasheet | PDF | HTML | 2025/8/27 | ||
| 應用說明 | AFE79xx Linux Driver | PDF | HTML | 2026/7/30 | |||
| 應用說明 | AFE79xx Bringup Using HDL Module Without Microcontroller | PDF | HTML | 2025/8/14 | |||
| 應用說明 | AFE79XX as a Chirp Signal Generator | PDF | HTML | 2024/7/10 | |||
| 應用說明 | Debugging AFE7950 for Run Time and Post Bring-Up Failure | PDF | HTML | 2024/6/28 | |||
| 使用指南 | AFE79xx SPI Bringup Guide With Xilinx FPGAs (Rev. A) | PDF | HTML | 2024/5/5 | |||
| 應用說明 | AFE79xx as Single Chip Wideband Repeater Solution (Rev. A) | PDF | HTML | 2023/5/30 | |||
| 應用說明 | Determining Optimal Receive Buffer Delay in JESD204B and JESD204C Receivers | PDF | HTML | 2022/7/7 | |||
| 應用說明 | AFE7950 Super-Heterodyne Solution for K-Band | PDF | HTML | 2022/2/15 | |||
| 應用說明 | How to Achieve Frequency Hopping with the AFE79xx | 2020/7/2 |
設計與開發
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AFE7958EVM — AFE7958 評估模組
AFE79XX-HSC-DESIGN — AFE79xx family high-speed transceiver design & support files
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| FCBGA (ABJ) | 400 | Ultra Librarian |
| FCBGA (ALK) | 400 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。