DS4305K Maxim Integrated, DS4305K Datasheet

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DS4305K

Manufacturer Part Number
DS4305K
Description
Power Management IC Development Tools
Manufacturer
Maxim Integrated
Series
DS4305, DS4305Kr
Datasheet

Specifications of DS4305K

Part # Aliases
90-4305K-000
The DS4305 is a nonvolatile (NV) electronically pro-
grammable voltage reference. The reference voltage 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 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.
Rev 1; 8/06
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.
OUT
IN
REFERENCE
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
Typical Operating Circuit
HAND-SELECTED
0.1% RESISTOR
OR MECHANICAL POT
REFERENCE
VOLTAGE
General Description
V
CC
GND
V
CC
DS4305 SOLUTION
Applications
V
ACCESS FOR
AUTOMATED
ALIGNMENT
______________________________________________ Maxim Integrated Products
DS4305
IN
ADJ
V
OUT
Electronically Programmable
REFERENCE
VOLTAGE
OUT
o Precise Electronically Adjustable Voltage
o Enables Automated Factory Trimming of Devices
o Can be Adjusted to Within ±1.5mV
o Wide Adjustable Output Voltage Range Within
o Low Temperature Coefficient
o ±1mA of Output-Current Drive
o NV Memory Stores the Voltage Indefinitely
o Output Short-Circuit Protection
o Low Cost
o Low Power Consumption
o 4.0V to 5.5V Single-Supply Operation
o Small 5-Lead SOT23 Package
o -40°C to +125°C Temperature Operation
o DS4305K Evaluation Kit is Available
+Denotes lead-free package.
DS4305R+T&R
Reference
Needing Voltage Adjustment
300mV of the Supply Rails
TOP VIEW
PART
Voltage Reference
GND
ADJ
V
-40°C to +125°C
IN
TEMP RANGE
1
2
3
Ordering Information
SOT23
DS4305
Pin Configuration
5
4
PIN-
PACKAGE
5 SOT23
V
V
CC
OUT
Features
MARK
4305+
SOT
1

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DS4305K Summary of contents

Page 1

... NV Memory Stores the Voltage Indefinitely o Output Short-Circuit Protection o Low Cost o Low Power Consumption Applications o 4.0V to 5.5V Single-Supply Operation o Small 5-Lead SOT23 Package o -40°C to +125°C Temperature Operation o DS4305K Evaluation Kit is Available PART DS4305R+T&R +Denotes lead-free package. TOP VIEW DS4305 SOLUTION REFERENCE V ...

Page 2

Electronically Programmable Voltage Reference 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 Operating ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +4.0V to +5.5V -40°C to +125°C, unless otherwise noted PARAMETER SYMBOL V PSRR V OUT OUTPSRR V Self-Adjust Settling Time t OUT EEPROM Programming Time t Turn-On Time t ON ADJ ...

Page 4

Electronically Programmable Voltage Reference (V = 5.0V +25°C, unless otherwise noted LOAD REGULATION (V = 0.3V) OUT 2 +125°C 1 +85°C 1 -40°C A -0.5 T ...

Page 5

T = +25°C, unless otherwise noted DS4305 LINE TRANSIENT (V = 3.0V) OUT 5. 4.0V V OUT AC-COUPLED 300mV/div DS4305 V ADJUST TRANSIENT OUT (V = 0.3V TO 4.0V 2V/div ADJ ...

Page 6

Electronically Programmable Voltage Reference 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 DS4305 R PU ...

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 DIGITALLY THE REFERENCE CONTROLLED VOLTAGE NEEDS MEASUREMENT ADJUSTMENT Figure 2. Application Circuit During the V self-adjust period, ...

Page 8

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products is a registered trademark of Dallas Semiconductor Corporation. ...

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