DS4305R+T&R

更新时间： 2024-09-17 02:51:07

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美信 - MAXIM		/
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8页	227K
描述
Sample-and-Infinite Hold Voltage Reference

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数据手册

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DS4305R+T&R 数据手册

Rev 0; 1/06

Sample-and-Infinite Hold

Voltage Reference

General Description

Features

The DS4305 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,

♦ Precise Electronically Adjustable Voltage

Reference

♦ Enables Automated Factory Trimming of Devices

Needing Voltage Adjustment

, is as simple as applying the desired voltage on

OUT

and toggling the adjust pin (ADJ) to lock the V

OUT

♦ Can be Adjusted to Within 1.5mV

voltage level indefinitely, even if the device is power

cycled. The DS4305 replaces current cumbersome fac-

tory 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 arrange-

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

♦ 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

Applications

♦ 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

Power-Supply Calibration

Threshold Setting

Offset Nulling

Bias Adjusting

Power Amps

Pressure Bridges

Factory-Calibrated Equipment

Ordering Information

PIN-

SOT

PART

TEMP RANGE

PACKAGE

MARK

DS4305R+T&R -40°C to +125°C

+Denotes lead-free package.

5 SOT23

4305+

Typical Operating Circuit

Pin Configuration

TOP VIEW

EXISTING SOLUTION

DS4305 SOLUTION

ADJ

REFERENCE

VOLTAGE

DS4305

REFERENCE

VOLTAGE

GND

OUT

SHUNT

VOLTAGE

REFERENCE

DS4305

ADJ

GND

HAND-SELECTED

0.1% RESISTOR

OUT

OR MECHANICAL POT

ACCESS FOR

AUTOMATED

ALIGNMENT

SOT23

______________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7 8

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