DS4303R+R MAXIM [Maxim Integrated Products], DS4303R+R Datasheet

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DS4303R+R

Manufacturer Part Number
DS4303R+R
Description
Voltage Sample and Infinite Hold
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
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,
V
V
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.
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.
REFERENCE
OUT
IN
VOLTAGE
SHUNT
and toggling the adjust pin (ADJ) to lock the V
, is as simple as applying the desired voltage on
Power-Supply Calibration
Threshold Setting
Offset Nulling
Bias Adjusting
Power Amps
Pressure Bridges
Factory-Calibrated Equipment
EXISTING SOLUTION
HAND SELECTED
0.1% RESISTOR
OR MECHANICAL POT
Typical Operating Circuit
REFERENCE
VOLTAGE
General Description
V
CC
V
GND
CC
DS4303 SOLUTION
Applications
Voltage Sample and Infinite Hold
V
ACCESS FOR
AUTOMATED
______________________________________________ Maxim Integrated Products
ALIGNMENT
IN
DS4303
ADJ
V
OUT
REFERENCE
VOLTAGE
OUT
♦ Precise Electronically Adjustable Voltage
♦ Enables Automated Factory Trimming of Devices
♦ Can be Adjusted to Within ±1mV
♦ Wide Adjustable Output Voltage Range Within
♦ 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
+Denotes lead-free package.
DS4303R/T&R
DS4303R+T&R
Reference
Needing Voltage Adjustment
300mV of the Supply Rails
TOP VIEW
PART
GND
ADJ
-40°C to +85°C
-40°C to +85°C
V
TEMP RANGE
IN
Ordering Information
1
2
3
SOT23
DS4303
Pin Configuration
5
4
PIN-
PACKAGE
SOT23-5
SOT23-5
V
V
CC
OUT
Features
MARK
4303+
4303
SOT
1

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DS4303R+R Summary of contents

Page 1

Rev 0; 3/05 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 simple as applying ...

Page 2

Voltage Sample and Infinite Hold ABSOLUTE MAXIMUM RATINGS Voltage on V Relative to GND ...........................-0.5V to +6. ADJ, and V Voltage OUT Relative to GND ...-0. 0.5V), not to exceed +6.0V CC ...

Page 3

NONVOLATILE MEMORY CHARACTERISTICS (V = +2.4V to 3.6V, unless otherwise noted.) CC PARAMETER SYMBOL Programming Cycles Note 1: All voltages referenced to ground. Note 2: Tracking accuracy is defined as V Note 3: Quantization refers to the size of the ...

Page 4

Voltage Sample and Infinite Hold (V = 3.3V +25°C, unless otherwise noted LOAD REGULATION (V = 0.3V) OUT +25° -40° ...

Page 5

T = +25°C, unless otherwise noted DS4303 LINE TRANSIENT (V = 2.0) OUT 3. 3.0V V OUT AC-COUPLED 200mV/div 0.2ms/div DS4303 V ADJUST TRANSIENT OUT (V = 3.6V 2V/div ADJ ...

Page 6

Voltage Sample and Infinite Hold Pin Description PIN NAME FUNCTION ADJ 1 Adjust Control Input 2 GND Ground 3 V Sample Voltage Input Voltage Output OUT 5 V Power-Supply Voltage CC Block Diagram V CC DS4303 R ...

Page 7

AUTOMATED TEST EQUIPMENT STEP 1: DIGITALLY SET REFERENCE CONTROLLED VOLTAGE VOLTAGE SOURCE STEP 2: DIGITAL PIN DRIVER TOGGLE ADJ STEP 3: DETERMINE IF THE REFERENCE VOLTAGE NEEDS ADJUSTMENT Figure 2. Application Circuit During the V self-adjust period, the DS4303 inter- ...

Page 8

Voltage Sample and Infinite Hold Layout Considerations To prevent an inadvertent programming cycle from occurring during power-up, minimize capacitive load- ing on the ADJ pin. A large capacitance on this pin could potentially hold ADJ in a low state long ...

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