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PDF DS4303 Data sheet ( Hoja de datos )
| Número de pieza | DS4303 | |
| Descripción | Voltage Sample and Infinite Hold | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Rev 0; 3/05
www.DataSheet4U.com
Voltage Sample and Infinite Hold
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,
VOUT, is as simple as applying the desired voltage on
VIN and toggling the adjust pin (ADJ) to lock the VOUT
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
Ordering Information
PART
TEMP RANGE
DS4303R/T&R -40°C to +85°C
DS4303R+T&R -40°C to +85°C
+Denotes lead-free package.
PIN-
PACKAGE
SOT23-5
SOT23-5
SOT
MARK
4303
4303+
Typical Operating Circuit
EXISTING SOLUTION
DS4303 SOLUTION
VCC
SHUNT
VOLTAGE
REFERENCE
REFERENCE
VOLTAGE
HAND SELECTED
0.1% RESISTOR
OR MECHANICAL POT
DS4303
VCC
VOUT
GND
VIN
ADJ
REFERENCE
VOLTAGE
ACCESS FOR
AUTOMATED
ALIGNMENT
Pin Configuration
TOP VIEW
ADJ 1
5 VCC
GND 2 DS4303
VIN 3
4 VOUT
SOT23
______________________________________________ Maxim Integrated Products 1
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.
1 page  
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Voltage Sample and Infinite Hold
Typical Operating Characteristics (continued)
(VCC = 3.3V, TA = +25°C, unless otherwise noted.)
DS4303 LINE TRANSIENT
(VOUT = 2.0)
DS4303 toc13
DS4303 SHUTDOWN TRANSIENT
(VOUT = 3.3V)
DS4303 toc14
3.6V
VCC
3.0V
VOUT
AC-COUPLED
200mV/div
0.2ms/div
500mV/div
VCC
VOUT
COUT = 100pF
2ms/div
DS4303 VOUT ADJUST TRANSIENT
(VCC = 3.6V, VIN = 3.3V)
DS4303 toc15
2V/div
ADJ
DS4303 NORMALIZED VOUT
vs. TEMPERATURE (VOUT = 0.4V)
1.008
1.003
1V/div
0.998
VOUT 0.993
5ms/div
1.0005
0.988
-40
DS4303 NORMALIZED VOUT
vs. TEMPERATURE (VOUT = 3.0V)
VCC = 3.3V
-15 10 35 60
TEMPERATURE (°C)
1.0000
0.9995
0.9990
0.9985
0.9980
0.9975
0.9970
0.9965
-40
VCC = 3.3V
-15 10 35 60
TEMPERATURE (°C)
85
85
_____________________________________________________________________ 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet DS4303.PDF ] | |
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