LMP92066 Temperature-Controlled Dual DAC

By Texas Instruments 97

LMP92066 Temperature-Controlled Dual DAC

Texas Instruments' LMP92066 is a highly integrated temperature-controlled dual DAC. Both DACs can be programmed by two independent, user-defined, temperature-to-voltage transfer functions stored in the internal EEPROM, allowing any temperature effects to be corrected without additional external circuitry. Once powered up, the device operates autonomously without intervention from the system controller to provide a complete solution for setting and compensating bias voltages and currents in control applications.

The LMP92066 has two analog outputs that support two output ranges: 0 to +5 V and 0 to -5 V. Each output can be switched to the load individually through the use of the dedicated control terminal. The output switching is designed for rapid response, making the device suitable for the RF power amplifier biasing applications.

  • Internal 12-bit temperature sensor
    • Accuracy (-40°C to +120°C), ±3.2°C (max.)
  • Two independent transfer functions stored in EEPROM
  • Dual-analog output
    • Two 12-bit DACs
    • 0 to +5 V or 0 to -5 V output range
    • High-capacitive load tolerant, up to 10 µF
    • Post-calibration accuracy ±2.4 mV (typ.)
  • VDD supply range 4.75 to 5.25 V
  • VIO range 1.65 to 3.6 V
  • Output on/off control switching time 50 ns (typ.)
    • Switching time 50 ns (typ.)
    • RDS(ON) 5 Ω (max.)
  • I²C interface: standard and fast
    • Nine selectable slave addresses
    • TIMEOUT function