General Description

The DS4303 is a nonvolatile (NV) sample and infinite-

hold adjustable voltage reference. The reference volt-

age is programmed in-circuit during factory calibration/

programming. Programming the reference voltage,

voltage level indefinitely, even if the device is power

cycled. The DS4303 replaces current cumbersome fac-

tory 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 arrange-

ment, lower inventory costs, and a quicker time-to-market.

Applications

Power-Supply Calibration

Threshold Setting

Offset Nulling

Bias Adjusting

Power Amps

Pressure Bridges

Factory-Calibrated Equipment

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

Voltage Sample and Infinite Hold

______________________________________________ Maxim Integrated Products

1

GND

15

ADJ

DS4303

SOT23

TOP VIEW

2

34

Pin Configuration

Ordering Information

SHUNT

VOLTAGE

REFERENCE

ACCESS FOR

AUTOMATED

ALIGNMENT

REFERENCE

VOLTAGE

REFERENCE

VOLTAGE

HAND SELECTED

0.1% RESISTOR

OR MECHANICAL POT

EXISTING SOLUTION

DS4303 SOLUTION

DS4303

GND

ADJ

Typical Operating Circuit

Rev 0; 3/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP RANGE

PIN-

PACKAGE

SOT

MARK

DS4303R/T&R

-40

°C to +85°C

SOT23-5

4303

DS4303R+T&R

-40

°C to +85°C

SOT23-5

4303+

+Denotes lead-free package.