IC-Hersteller Texas Instruments

IC-Hersteller (103)

Texas Instruments TPS71750DSET | Demoboard TIDA-01583

Ultra-Low Noise Bias Voltage Reference Design for Microbolometer Detectors in Thermal Cameras

Details

TopologieSonstige Topologie
IC-RevisionE1

Beschreibung

Uncooled microbolometer detectors require accurate and ultra-low noise bias voltages for their operation. Such requirements cannot be simply met by switching power supplies, LDO or DAC outputs. Enabled by Texas Instruments’ precision DAC, low noise precision amplifier and high PSRR, low noise LDO, this reference design demonstrates how to generate accurate and ultra-low noise programmable bias voltages and power supplies for uncooled microbolometer detectors at low cost.

Eigenschaften

  • Total output noise < 4µVRMS from 0.1Hz to 1MHz
  • Voltage accuracy better than ±10mV
  • Based on a true 16-bit, R-2R DAC with buffered rail-to-rail voltage output
  • No. of output: four programmable voltage outputs
  • Easily scalable in terms of DAC resolution, voltage range, number of channels
  • Output current capability: 10mA (without BJT) and 75mA (with external BJT)

Typische Anwendungen

  • Wireless LAN, Bluetooth
  • Camera Sensor Power

Weiterführende Informationen

Artikeldaten

Artikel Nr.
Daten­blatt
Simu­lation
Downloads
Status
Produktserie
λDom typ.(nm)
Emittierte Farbe
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chiptechnologie
50% typ.(°)
Muster
WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Rot
Simu­lation
Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.
dominante Wellenlänge [typ.]625 nm
Emittierte FarbeRot 
Spitzen-Wellenlänge [typ.]630 nm
Lichtstärke [typ.]250 mcd
Durchlassspannung [typ.]2 V
ChiptechnologieAlInGaP 
Abstrahlwinkel Phi 0° [typ.]140 °