DS4305, DS4305K:Electronically Programmable Voltage Reference

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

The DS4305 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 (active-low ADJ) to lock the VOUT voltage level indefinitely, even if the device is power cycled. The DS4305 replaces current cumbersome factory adjustment arrangements with a low-cost solution that can be adjusted using automated techniques. In addition, the DS4305 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.

Key Features
  • Precise Electronically Adjustable Voltage Reference
  • Enables Automated Factory Trimming of Devices Needing Voltage Adjustment
  • Can be Adjusted to Within ±1.5mV
  • 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
  • 4.0V to 5.5V Single-Supply Operation
  • Small 5-Lead SOT23 Package
  • -40°C to +125°C Temperature Operation
  • DS4305K Evaluation Kit is Available
DS4305, DS4305K: Typical Operating Circuit
DS4305, DS4305K: Typical Operating Circuit
Applications/Uses
  • Bias Adjusting
  • Factory-Calibrated Equipment
  • Offset Nulling
  • Power Amps
  • Power Supply Calibration
  • Pressure Bridges
  • Threshold Setting
DataSheet
titleDownload file
DS4305-DS4305K Data SheetDS4305-DS4305K.pdf
Parametrics
Part NumberVOUT
(V)
Temp. Coeff.
(ppm/°C)
Initial Accuracy
(% max)
Calibration MethodISUPPLY
(µA)
VSUPPLY
(V)
VSUPPLY
(V)
Noise 0.1Hz to 10Hz
(µVpp)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
max@ +25°CmaxminmaxtypSee Notes
DS4305Programmable (within 300mV of Rails)240.03E2CRef.200045.5160-40 to +125SOT/3
SOT/5
$0.95 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
DS4305KNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +85°CNo
DS4305R+T&RActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
DS4305R+UActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
DS4305R-UNo Longer AvailableDS4305R+USOT,;5 pin;9 mm²-40°C to +85°CNo
DS4305R/T&RNo Longer AvailableDS4305R+T&RSOT,;5 pin;9 mm²-40°C to +85°CNo
DS4305-DS4305K.pdf DS4305
Nonvolatile STANDBY/ON Switch MAX6468
DS4305.pdf DS4305
DS4305-DS4305K.pdf DS4305K