Rainbow Electronics DS4303 - Manual

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,
V
OUT , is as simple as applying the desired voltage on
V IN and toggling the adjust pin (ADJ) to lock the V OUT
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
DS4303
Voltage Sample and Infinite Hold
______________________________________________ Maxim Integrated Products 1
GND
V
OUT
V
IN
1 5 V CC ADJ
DS4303
SOT23
TOP VIEW
2
3 4
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
V CC
GND
V OUT
V IN ADJ
V CC
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.