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DS4305, DS4305K

Electronically Programmable Voltage Reference

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

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Status Explanations for product status codes

Active: In Production.

Description

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.

DS4305K EVALUATION BOARD
To facilitate evaluation of the DS4305 in its tiny SOT23 package, it is available mounted on a small (16mm x 10mm) evaluation board. The board includes a 0.1µF decoupling capacitor on the supply input. The part number for the evaluation board is DS4305K and it available as a free sample.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 1 (PDF, 308kB)
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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
 

Applications/Uses

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

Key Specifications:

Voltage References
Part Number VOUT
(V)
Temp. Coeff.
(ppm/°C)
Initial Accuracy
(% max)
Calibration Method ISUPPLY
(µA)
VSUPPLY
(V)
VSUPPLY
(V)
Noise 0.1Hz to 10Hz
(µVpp)
Oper. Temp.
(°C)
Package/Pins Smallest Available Pckg.
(mm2)
Budgetary Price
max @ +25°C max min max typ max w/pins See Notes
DS4305  Programmable (within 300mV of Rails) 24 0.03 E2CRef. 2000 4 5.5 160 -40 to +125
SOT/3
SOT/5
8 $0.39 @1k
See All Voltage References (168)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

DS4305, DS4305K: Typical Operating Circuit
Typical Operating Circuit

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Information Index

Rev 1; 2006-08-03
This page last modified: 2009-12-10




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