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DS4303, DS4303K

Electronically Programmable Voltage Reference

Nonvolatile Sample and Infinite-Hold Adjustable Voltage Reference for Automated Factory Calibration

Product Details

Key Features

Parametric specs for Voltage References
VOUT (V) Programmable (within 300mV of Rails)
Temp. Coeff. (ppm/°C) (max) 30
ISUPPLY (µA) (max) 1600
Initial Accuracy (% max) (@ +25°C) 0.03
Calibration Method E2CRef.
VSUPPLY (V) (min) 2.4
VSUPPLY (V) (max) 3.6
Noise 0.1Hz to 10Hz (µVpp) (typ) 200
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/5
Budgetary
Price (See Notes)
2.08
Parametric specs for Voltage References
VOUT (V) Programmable (within 300mV of Rails)
Temp. Coeff. (ppm/°C) (max) 30
ISUPPLY (µA) (max) 1600
Initial Accuracy (% max) (@ +25°C) 0.03
Calibration Method E2CRef.
VSUPPLY (V) (min) 2.4
VSUPPLY (V) (max) 3.6
Noise 0.1Hz to 10Hz (µVpp) (typ) 200
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/5
Budgetary
Price (See Notes)
2.08
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Simplified Block Diagram

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Parameters

Parametric specs for Voltage References
VOUT (V) Programmable (within 300mV of Rails)
Temp. Coeff. (ppm/°C) (max) 30
ISUPPLY (µA) (max) 1600
Initial Accuracy (% max) (@ +25°C) 0.03
Calibration Method E2CRef.
VSUPPLY (V) (min) 2.4
VSUPPLY (V) (max) 3.6
Noise 0.1Hz to 10Hz (µVpp) (typ) 200
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/5
Budgetary
Price (See Notes)
2.08

Key Features

  • Precise Electronically Adjustable Voltage Reference
  • Enables Automated Factory Trimming of Devices Needing Voltage Adjustment
  • Can be Adjusted to Within ±1mV
  • Wide Adjustable Output Voltage Range Within 300mV of the Supply Rails
  • Low Temperature Coefficient
  • ±1mA of Output-Current Drive
  • NV Memory Stores the Voltage Indefinitely
  • Output Short-Circuit Protection
  • Low Cost
  • Low Power Consumption
  • 2.4V to 3.6V Single-Supply Operation
  • Small 5-Lead SOT23 Package
  • Applications/Uses

    • Bias Adjusting
    • Factory-Calibrated Equipment
    • Offset Nulling
    • Power Amplifiers
    • Power-Supply Calibration
    • Pressure Bridges
    • Threshold Setting

    Description

    The DS4303 is a nonvolatile (NV) electronically programmable voltage reference. The reference voltage is programmed in-circuit during factory calibration/programming. Programming the reference voltage, VOUT, is as simple as applying the desired voltage on VIN and toggling the adjust pin (ADJ-bar) to lock the VOUT voltage level indefinitely, even if the device is power cycled. The DS4303 replaces current cumbersome factory adjustment arrangements with a low-cost solution that can be adjusted using automated techniques. In addition, the DS4303 has the ability to be readjusted after the unit has been fully assembled and tested. This results in a much more flexible manufacturing arrangement, lower inventory costs, and a quicker time-to-market.

    Simplified Block Diagram

    DS4303, DS4303K: Typical Operating Circuit DS4303, DS4303K: Typical Operating Circuit Zoom icon

    Support & Training

    Search our knowledge base for answers to your technical questions.

    Filtered Search

    Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .