SBASAN5 july   2023 AFE7955

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Revision History
  6. 5Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information AFE79xx
    5. 5.5  Transmitter Electrical Characteristics
    6. 5.6  RF ADC Electrical Characteristics
    7. 5.7  PLL/VCO/Clock Electrical Characteristics
    8. 5.8  Digital Electrical Characteristics
    9. 5.9  Power Supply Electrical Characteristics
    10. 5.10 Timing Requirements
    11. 5.11 Switching Characteristics
    12. 5.12 Typical Characteristics
      1. 5.12.1  TX Typical Characteristics 800 MHz
      2. 5.12.2  TX Typical Characteristics at 1.8 GHz
      3. 5.12.3  TX Typical Characteristics at 2.6 GHz
      4. 5.12.4  TX Typical Characteristics at 3.5 GHz
      5. 5.12.5  TX Typical Characteristics at 4.9 GHz
      6. 5.12.6  TX Typical Characteristics at 8.1 GHz
      7. 5.12.7  TX Typical Characteristics at 9.6 GHz
      8. 5.12.8  RX Typical Characteristics at 800 MHz
      9. 5.12.9  RX Typical Characteristics at 1.75-1.9 GHz
      10. 5.12.10 RX Typical Characteristics at 2.6 GHz
      11. 5.12.11 RX Typical Characteristics at 3.5 GHz
      12. 5.12.12 RX Typical Characteristics at 4.9 GHz
      13. 5.12.13 RX Typical Characteristics at 8.1GHz
      14. 5.12.14 RX Typical Characteristics at 9.6 GHz
      15. 5.12.15 PLL and Clock Typical Characteristics
  7. 6Device and Documentation Support
    1. 6.1 Receiving Notification of Documentation Updates
    2. 6.2 Support Resources
    3. 6.3 Trademarks
    4. 6.4 Electrostatic Discharge Caution
    5. 6.5 Glossary
  8. 7Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

The AFE7955 is a high performance, wide bandwidth multi-channel transceiver, integrating two RF sampling transmitter chains and 3 RF sampling receiver chains. With operation up to 12 GHz, 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 1200 MHz of signal bandwidth per TX channel. The output of the DUCs drives a 12-GSPS 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 40-dB range and 1-dB analog and 0.125-dB digital steps.

Two receiver chains includes a 25-dB range DSA (Digital Step Attenuator), followed by a 3-GSPS ADC (analog-to-digital converter). The two 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 signal bandwidth of up to 1200 MHz per RX channel.

An additional receiver channel has a single wideband DDC supporting up to 1200 MHz bandwidth.

Package Information
PART NUMBERPACKAGE(1)PACKAGE SIZE(2)
AFE7955FC-BGA17 mm × 17 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
GUID-20220928-SS0I-FMZ5-C9PQ-LSG7MT0QSVN9-low.svgFunctional Block Diagram