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13-1395; Rev 1; 4/99
Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References
General Description
The MAX6001-MAX6005 family of SOT23, low-cost series voltage references meets the cost advantage of shunt references and offers the power-saving advantage of series references, which traditionally cost more. Unlike conventional shunt-mode (two-terminal) references that must be biased at the load current and require an external resistor, these devices eliminate the need for an external resistor and offer a supply current that is virtually independent of the supply voltage. These micropower, low-dropout, low-cost devices are ideal for high-volume, cost-sensitive 3V and 5V batteryoperated systems with wide variations in supply voltage that require very low power dissipation. Additionally, these devices are internally compensated and do not require an external compensation capacitor, saving valuable board area in space-critical applications. o 1% max Initial Accuracy o 100ppm/C max Temperature Coefficient o 45A max Quiescent Supply Current o 0.8A/V Supply Current Variation with VIN o 400A Output Source and Sink Current o 100mV Dropout at 400A Load Current o 0.12V/A Load Regulation o 8V/V Line Regulation o Stable with CLOAD = 0 to 2.2nF
Features
MAX6001-MAX6005
Applications
Portable/Battery-Powered Equipment Notebook Computers PDAs, GPSs, and DMMs Cellular Phones Pagers Hard-Disk Drives
PART MAX6001EUR-T MAX6002EUR-T MAX6003EUR-T MAX6004EUR-T MAX6005EUR-T
Ordering Information
TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PINSOT PACKAGE TOP MARK 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 FZCW FZCX FZDK FZCY FZCZ
Selector Guide
PART MAX6001 MAX6002 MAX6003 MAX6004 MAX6005 OUTPUT VOLTAGE (V) 1.250 2.500 3.000 4.096 5.000 INPUT VOLTAGE (V) 2.5 to 12.6 (VOUT + 200mV) to 12.6 (VOUT + 200mV) to 12.6 (VOUT + 200mV) to 12.6 (VOUT + 200mV) to 12.6
Typical Operating Circuit
+SUPPLY INPUT (SEE SELECTOR GUIDE)
Pin Configuration
TOP VIEW
* IN 1
IN OUT REFERENCE OUT
OUT 2
MAX6001 MAX6002 MAX6003 MAX6004 MAX6005
SOT23-3
MAX6001 MAX6002 MAX6003 MAX6004 MAX6005
GND 2.2nF MAX*
3
GND
*CAPACITORS ARE OPTIONAL
________________________________________________________________ Maxim Integrated Products
1
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6001-MAX6005
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND IN .........................................................................-0.3V to +13.5V OUT .............................................................-0.3V to (VIN + 0.3V) Output Short Circuit to GND or IN (VIN < 6V) ............Continuous Output Short Circuit to GND or IN (VIN 6V) .....................60sec Continuous Power Dissipation (TA = +70C) SOT23-3 (derate 4.0mW/C above +70C)..................320mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS--MAX6001
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER OUTPUT Output Voltage Output Voltage Temperature Coefficient (Note 2) Line Regulation Load Regulation OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply Voltage Range Quiescent Supply Current Change in Supply Current VIN IIN IIN/VIN 2.5V VIN 12.6V Guaranteed by line-regulation test 2.5 27 0.8 12.6 45 2.6 V A A/V eOUT VOUT/ VIN tR COUT f = 0.1Hz to 10Hz f = 10Hz to 10kHz VIN = 5V 100mV, f = 120Hz To VOUT = 0.1% of final value, COUT = 50pF (Note 4) 0 25 65 86 30 2.2 Vp-p VRMS dB s nF VOUT/ time 1,000 hours at TA = +25C VOUT TCVOUT VOUT/ VIN VOUT/ IOUT ISC 2.5V VIN 12.6V Sourcing: 0 IOUT 400A Sinking: -400A IOUT 0 Short to GND Short to IN TA = +25C 1.237 1.250 20 8 0.12 0.15 4 4 130 50 1.263 100 120 0.8 1.0 V ppm/C V/V V/A mA ppm ppm/ 1,000hrs SYMBOL CONDITIONS MIN TYP MAX UNITS
2
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS--MAX6002
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER OUTPUT Output Voltage Output Voltage Temperature Coefficient (Note 2) Line Regulation Load Regulation Dropout Voltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply Voltage Range Quiescent Supply Current Change in Supply Current VIN IIN IIN/VIN (VOUT + 0.2V) VIN 12.6V Guaranteed by line-regulation test VOUT + 0.2 27 0.8 12.6 45 2.6 V A A/V eOUT VOUT/ VIN tR COUT f = 0.1Hz to 10Hz f = 10Hz to 10kHz VIN = 5V 100mV, f = 120Hz To VOUT = 0.1% of final value, COUT = 50pF (Note 4) 0 60 125 82 85 2.2 Vp-p VRMS dB s nF VOUT TCVOUT VOUT/ VIN VOUT/ IOUT VIN VOUT ISC VOUT/ time VOUT/ time 1,000 hours at TA = +25C (VOUT + 0.2V) VIN 12.6V Sourcing: 0 IOUT 400A Sinking: -400A IOUT 0 IOUT = 400A Short to GND Short to IN TA = +25C 2.475 2.500 20 15 0.14 0.18 100 4 4 130 50 2.525 100 200 0.90 1.10 200 V ppm/C V/V V/A mV mA ppm ppm/ 1,000hrs SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6001-MAX6005
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6001-MAX6005
ELECTRICAL CHARACTERISTICS--MAX6003
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER OUTPUT Output Voltage Output Voltage Temperature Coefficient (Note 2) Line Regulation Load Regulation Dropout Voltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply Voltage Range Quiescent Supply Current Change in Supply Current VIN IIN IIN/VIN (VOUT + 0.2V) VIN 12.6V Guaranteed by line-regulation test VOUT + 0.2 27 0.8 12.6 45 2.6 V A A/V eOUT VOUT/ VIN tR COUT f = 0.1Hz to 10Hz f = 10Hz to 10kHz VIN = 5V 100mV, f = 120Hz To VOUT = 0.1% of final value, COUT = 50pF (Note 4) 0 75 150 80 100 2.2 Vp-p VRMS dB s nF VOUT TCVOUT VOUT/ VIN VOUT/ IOUT VIN VOUT ISC VOUT/ time VOUT/ time 1,000 hours at TA = +25C (VOUT + 0.2V) VIN 12.6V Sourcing: 0 IOUT 400A Sinking: -400A IOUT 0 IOUT = 400A Short to GND Short to IN TA = +25C 2.97 3.00 20 20 0.14 0.18 100 4 4 130 50 3.03 100 220 0.90 1.10 200 V ppm/C V/V V/A mV mA ppm ppm/ 1,000hrs SYMBOL CONDITIONS MIN TYP MAX UNITS
4
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS--MAX6004
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER OUTPUT OUTPUT Output Voltage Output Voltage Temperature Coefficient (Note 2) Line Regulation Load Regulation Dropout Voltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply Voltage Range Quiescent Supply Current Change in Supply Current VIN IIN IIN/VIN (VOUT + 0.2V) VIN 12.6V Guaranteed by line-regulation test VOUT + 0.2 27 0.8 12.6 45 2.6 V A A/V eOUT VOUT/ VIN tR COUT f = 0.1Hz to 10Hz f = 10Hz to 10kHz VIN = 5V 100mV, f = 120Hz To VOUT = 0.1% of final value, COUT = 50pF (Note 4) 0 100 200 77 160 2.2 Vp-p VRMS dB s nF VOUT TCVOUT VOUT/ VIN VOUT/ IOUT VIN VOUT ISC VOUT/ time VOUT/ time (VOUT + 0.2V) VIN 12.6V Sourcing: 0 IOUT 400A Sinking: -400A IOUT 0 IOUT = 400A Short to GND Short to IN 1,000 hours at TA = +25C 1,000 hours at TA = +25C TA = +25C 4.055 4.096 20 25 0.15 0.20 100 4 4 130 50 4.137 100 240 1.00 1.20 200 V ppm/C V/V V/A mV mA ppm ppm/ 1,000hrs SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6001-MAX6005
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6001-MAX6005
ELECTRICAL CHARACTERISTICS--MAX6005
(VIN = +5.5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER OUTPUT OUTPUT Output Voltage Output Voltage Temperature Coefficient (Note 2) Line Regulation Load Regulation Dropout Voltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT INPUT Supply Voltage Range Quiescent Supply Current Change in Supply Current Note 1: Note 2: Note 3: Note 4: Note 5: VIN IIN IIN/VIN (VOUT + 0.2V) VIN 12.6V Guaranteed by line-regulation test VOUT + 0.2 27 0.8 12.6 45 2.6 V A A/V eOUT VOUT/ VIN tR COUT f = 0.1Hz to 10Hz f =10Hz to 10kHz VIN = 5V 100mV, f = 120Hz To VOUT = 0.1% of final value, COUT = 50pF (Note 4) 0 120 240 72 220 2.2 Vp-p VRMS dB s nF VOUT/ time 1,000 hours at TA = +25C VOUT TCVOUT VOUT/ VIN VOUT/ IOUT VIN VOUT ISC (VOUT + 0.2V) VIN 12.6V Sourcing: 0 IOUT 400A Sinking: -400A IOUT 0 IOUT = 400A Short to GND Short to IN TA = +25C 4.950 5.000 20 25 0.17 0.24 100 4 4 130 50 5.050 100 240 1.00 1.20 200 V ppm/C V/V V/A mV mA ppm ppm/ 1,000hrs SYMBOL CONDITIONS MIN TYP MAX UNITS
All devices are 100% production tested at TA = +25C and are guaranteed by design for TA = TMIN to TMAX, as specified. Temperature coefficient is measured by the "box" method; i.e., the maximum VOUT is divided by the maximum t. Thermal hysteresis is defined as the change in +25C output voltage before and after cycling the device from TMIN to TMAX. Not production tested. Guaranteed by design. Dropout voltage is the minimum input voltage at which VOUT changes 0.2% from VOUT at VIN = 5.0V (VIN = 5.5V for MAX6005).
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References
Typical Operating Characteristics
(VIN = +5V for MAX6001-MAX6004, VIN = +5.5V for MAX6005; IOUT = 0; TA = +25C; unless otherwise noted.) (Note 6)
MAX6001 OUTPUT VOLTAGE TEMPERATURE DRIFT
MAX6001-01
MAX6001-MAX6005
MAX6005 OUTPUT VOLTAGE TEMPERATURE DRIFT
MAX6001-02
MAX6005 LONG-TERM DRIFT
5.002 5.001 OUTPUT VOLTAGE (V) 5.000 4.999 4.998 4.997 4.996 4.995 THREE TYPICAL PARTS
MAX6001-03
1.2520 1.2500 1.2480 VOUT (V)
5.002 5.000 4.998 VOUT (V) 4.996 4.994 4.992 4.990
5.003
1.2460 1.2440 1.2420 1.2400 -40 THREE TYPICAL PARTS -20 0 20 40 60 80 100
4.988 4.986 -40
THREE TYPICAL PARTS -20 0 20 40 60 80 100
4.994 4.993 0 100 200 300 400 500 600 700 800 900 1,000 TIME (HOURS)
TEMPERATURE DRIFT (C)
TEMPERATURE DRIFT (C)
MAX6001 LINE REGULATION
MAX6001-04
MAX6005 LINE REGULATION
MAX6001-05
MAX6002/MAX6003 DROPOUT VOLTAGE vs. SOURCE CURRENT
0.7 DROPOUT VOLTAGE (V) 0.6 0.5 TA = -40C 0.4 TA = +85C 0.3 0.2 0.1 TA = +25C 0 200 400 600 800 1,000
MAX6001-06
400 OUTPUT VOLTAGE CHANGE (V)
800 OUTPUT VOLTAGE CHANGE (V) TA = +85C 600 TA = -40C 400
0.8
300 TA = +85C 200 TA = -40C
100
200
TA = +25C
0
TA = +25C
0
-100 2 4 6 8 10 12 14 INPUT VOLTAGE (V)
-200 5 7 9 INPUT VOLTAGE (V) 11 13
0 SOURCE CURRENT (A)
MAX6001 LOAD REGULATION
MAX6001-07
MAX6005 LOAD REGULATION
MAX6001-08
MAX6004/MAX6005 DROPOUT VOLTAGE vs. SOURCE CURRENT
MAX6001-09
0.4 OUTPUT VOLTAGE CHANGE (mV)
0.400 OUTPUT VOLTAGE CHANGE (mV)
0.30 0.25 DROPOUT VOLTAGE (V) TA = +85C 0.20 0.15 0.10 0.05 TA = +25C TA = -40C
0.2 TA = -40C 0 TA = +85C -0.2 TA = +25C
0.200 TA = -40C 0
-0.200
TA = +25C TA = +85C
-0.4 -500 -375 -250 -125
0
125 250 375 500
-0.400 -500 -375 -250 -125
0 0 125 250 375 500 0 200 400 600 800 1,000 SOURCE CURRENT (A)
LOAD CURRENT (A)
LOAD CURRENT (A)
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6001-MAX6005
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6001-MAX6004, VIN = +5.5V for MAX6005; IOUT = 0; TA = +25C; unless otherwise noted.) (Note 6)
MAX6001 POWER-SUPPLY REJECTION vs. FREQUENCY
MAX6001-10
MAX6005 POWER-SUPPLY REJECTION vs. FREQUENCY
MAX16001-11
SUPPLY CURRENT vs. INPUT VOLTAGE
38 36 SUPPLY CURRENT (A) 34 32 30 28 26 24 22 VALID OVER SPECIFIED VIN (MIN) TO VIN (MAX) FOR EACH PART
MAX6001-12
100
100 VCC = 5.5V 0.25V
40
10 PSR (mV/V) PSR (mV/V)
10
1
1
0.1 0.01 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
0.1 0.01 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
20 2 4 6 8 10 12 14 INPUT VOLTAGE (V)
MAX6001 OUTPUT IMPEDANCE vs. FREQUENCY
MAX6001-13
MAX6005 OUTPUT IMPEDANCE vs. FREQUENCY
MAX6001-14
SUPPLY CURRENT vs. TEMPERATURE
MAX6001-15
1k
1k
40
OUTPUT IMPEDANCE ()
OUTPUT IMPEDANCE ()
SUPPLY CURRENT (A)
100
100
35 VIN = 12.5V 30 VIN = 7.5V VIN = 5.5V 25 VIN = 2.5V (MAX6001 ONLY)
10
10
1
1
0.1 0.01 0.1 1 10 100 1k 10k 100k 1M FREQUENCY (Hz)
0.1 0.01 0.1 1 10 100 1k 10k 100k 1M FREQUENCY (Hz)
20 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
MAX6001 0.1Hz TO 10Hz OUTPUT NOISE
MAX6001-16
MAX6005 0.1Hz TO 10Hz OUTPUT NOISE
MAX6001-17
MAX6001 TURN-ON TRANSIENT
MAX6001-18
VIN 1V/div
VOUT 10V/div
VOUT 20V/div VOUT 1V/div
1sec/div
1sec/div
10s/div
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6001-MAX6004, VIN = +5.5V for MAX6005; IOUT = 0; TA = +25C; unless otherwise noted.) (Note 6)
MAX6001 LOAD-TRANSIENT RESPONSE
MAX6001-19 MAX6001-20 MAX6001-21
MAX6001-MAX6005
MAX6005 LOAD-TRANSIENT RESPONSE
+25A
MAX6005 TURN-ON TRANSIENT
IOUT 40A/div
-25A
IOUT 50A/div
VIN 2V/div
VOUT 20mV/div
VOUT 50mV/div
VOUT 2V/div
10s/div IOUT = 25A, AC-COUPLED
20s/div VIN = 5.5V, IOUT = 25A, AC-COUPLED
10s/div
MAX6001 LOAD-TRANSIENT RESPONSE
MAX6001-22
MAX6005 LOAD-TRANSIENT RESPONSE
MAX6001-23
MAX6001 LINE-TRANSIENT RESPONSE
MAX6001-24
+500A IOUT 1mA/div
IOUT -500A 500A/div
VIN 200mV/div
VOUT 200mV/div VOUT 0.2V/div VOUT 100mV/div
10s/div IOUT = 500A, AC-COUPLED
20s/div VIN = 5.5V, IOUT = 500A, AC-COUPLED
2.5s/div VIN = 5V 0.25V, AC-COUPLED
MAX6005 LINE-TRANSIENT RESPONSE
MAX6001-25
VIN 200mV/div
VOUT 100mV/div
2s/div VIN = 5.5V 0.25V, AC-COUPLED
Note 6: Many of the Typical Operating Characteristics of the MAX6001 family are extremely similar. The extremes of these characteristics are found in the MAX6001 (1.2V output) and MAX6005 (5.0V output) devices. The Typical Operating Characteristics of the remainder of the MAX6001 family typically lie between these two extremes and can be estimated based on their output voltage. 9
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6001-MAX6005
Pin Description
PIN 1 2 3 NAME IN OUT GND FUNCTION Supply Voltage Input Reference Voltage Output Ground
Supply Current
The quiescent supply current of these series-mode references is a maximum of 45A and is virtually independent of the supply voltage, with only a 0.8A/V variation with supply voltage. Unlike shunt-mode references, the load current of these series-mode references is drawn from the supply voltage only when required, so supply current is not wasted and efficiency is maximized over the entire supply voltage range. This improved efficiency can help reduce power dissipation and extend battery life. When the supply voltage is below the minimum specified input voltage (as during turn-on), the devices can draw up to 200A beyond the nominal supply current. The input voltage source must be capable of providing this current to ensure reliable turn-on.
Detailed Description
The MAX6001-MAX6005 bandgap references offer a temperature coefficient of <100ppm/C and initial accuracy of better than 1%. These devices can sink and source up to 400A with <200mV of dropout voltage, making them attractive for use in low-voltage applications.
Applications Information
Output/Load Capacitance
Devices in this family do not require an output capacitance for frequency stability. They are stable for capacitive loads from 0 to 2.2nF. However, in applications where the load or the supply can experience step changes, an output capacitor will reduce the amount of overshoot (or undershoot) and assist the circuit's transient response. Many applications do not need an external capacitor, and this family can offer a significant advantage in these applications when board space is critical.
Output Voltage Hysteresis
Output voltage hysteresis is the change in the output voltage at TA = +25C before and after the device is cycled over its entire operating temperature range. Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical temperature hysteresis value is 130ppm.
VS VCC V+ +2VS IN VOUT +REF OUTPUT
MAX681
GND
MAX6001 MAX6002 MAX6003 MAX6004 MAX6005
GND
1M, 0.1% V+ OUTPUT
ICL7652
V1M, 0.1% 10nF -REF OUTPUT
-2VS
Figure 1. Positive and Negative References from Single +3V or +5V Supply
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References
Turn-On Time
These devices typically turn on and settle to within 0.1% of their final value in 30s to 220s depending on the device. The turn-on time can increase up to 1.5ms with the device operating at the minimum dropout voltage and the maximum load. TRANSISTOR COUNT: 70
Chip Information
MAX6001-MAX6005
Positive and Negative Low-Power Voltage Reference
Figure 1 shows a typical method for developing a bipolar reference. The circuit uses a MAX681 voltage doubler/inverter charge-pump converter to power an ICL7652, thus creating a positive as well as a negative reference voltage.
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Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6001-MAX6005
Package Information
SOTPO3L.EPS
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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