TL103W - Dual OpAmp With Internal Reference

The TL103W and TL103WA combine the building blocks of a dual operational amplifier and a fixed voltage reference – both of which often are used in the control circuitry of both switch-mode and linear power supplies. OP AMP1 has its noninverting input internally tied to a fixed 2.5-V reference, while OP AMP2 is independent, with both inputs uncommitted.

For the A grade, especially tight voltage regulation can be achieved through low offset voltages for both operational amplifiers (typically 0.5 mV) and tight tolerances for the voltage reference (0.4% at 25°C and 0.8% over operating temperature range).

The TL103W and TL103WA are characterized for operation from –40°C to 105°C.

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• Operational Amplifier
  • Low Offset Voltage Max of:
    • TL103WA…3 mV (25°C) and 5 mV (Full Temperature)
    • TL103W…4 mV (25°C) and 5 mV (Full Temperature)
  • Low Supply Current…350 µA/Channel (Typ)
  • Unity Gain Bandwidth…0.9 MHz (Typ)
  • Input Common-Mode Range Includes GND
  • Large Output-Voltage Swing… 0 V to V_CC – 1.5 V
  • Wide Supply-Voltage Range…3 V to 32 V
  • 2.5-kV ESD Protection (HBM)
• Voltage Reference
  • Fixed 2.5-V Reference
  • Tight Tolerance Max of:
    • TL103WA…0.4% (25°C) and 0.8% (Full Temperature)
    • TL103W . . . 0.7% (25°C) and 1.4% (Full Temperature)
  • Low Temperature Drift…7 mV (Typ) Over Operating Temperature Range
  • Wide Sink-Current Range . . . 0.5 mA (Typ) to 100 mA
  • Output Impedance…0.2 Ω (Typ)
• APPLICATIONS
  • Battery Chargers
  • Switch-Mode Power Supplies
  • Linear Voltage Regulation
  • Data-Acquisition Systems

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