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Texas Instruments AFE10004 Power-Amplifier Monitor & Controller

Texas Instruments AFE10004 Power-Amplifier Monitor and Controller is a highly integrated, autonomous power-amplifier (PA) precision analog front end (AFE). The AFE10004 includes four temperature compensation digital-to-analog converters (DACs), integrated EEPROM, and gate bias switches. The four DACs on the AFE10004 are programmed by four independent, user-defined, temperature-to-voltage transfer functions stored in the internal EEPROM, allowing any temperature effects to be corrected without additional external circuitry. After start-up, the AFE10004 operates without intervention from a system controller to provide a complete system for setting and compensating bias voltages in control applications.

The TI AFE10004 Power-Amplifier Monitor and Controller has function integration and a wide operating temperature range. It is an excellent choice as an all-in-one, autonomous bias control circuit for power amplifiers in RF systems. The flexible DAC output ranges and built-in sequencing features let the AFE10004 be used as a biasing controller for various transistor technologies, such as LDMOS, GaAs, and GaN.

Features

  • Local and remote diode temperature sensor
    • ±2.5°C accuracy, maximum
    • 0.0625°C resolution
  • Internal EEPROM for autonomous operation
    • Four independent transfer functions storage
    • Device configuration storage
    • Open space for user storage
  • Four analog outputs
    • Four monotonic DACs at 1.22mV resolution
    • Automatically configured output ranges
      • Positive output voltage of 5.5V, maximum
      • Negative output voltage of –10V, minimum
    • High current drive capability
      • Source up to 100mA
      • Sink up to 20mA
    • High capacitive load tolerant of up to 15µF
  • Gate bias on and off control switches
    • Two programmable off-voltages
      • 1.22mV Resolution two auxiliary DACs
    • 50ns, typical fast switching time
    • A low resistance of 3Ω, maximum
  • Built-in sequencing control
  • Internal 2.5V reference
  • SPI and I2C interfaces: 1.7V to 3.6V operation
    • SPI: 4-wire interface
    • I2C: Eight selectable slave addresses
  • –40°C to +125°C specified temperature range
  • –40°C to +150°C operating temperature range

Applications

  • Radar
  • Electronic warfare
  • Communications payload
  • Defense radio
  • Active antenna system mMIMO (AAS)
  • Outdoor backhaul unit
Opublikowano: 2020-12-24 | Zaktualizowano: 2024-10-28