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19-2428; Rev 0; 4/02
Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference
General Description
The MAX6034 family of precision, low-dropout, micropower voltage references are available in the miniature 3-pin SC70 surface-mount package. They feature a proprietary temperature coefficient curvature-correction circuit and laser-trimmed, thin-film resistors that result in a low temperature coefficient of 30ppm/C (max) and initial accuracy of 0.20% (max). These devices are available over the extended temperature range of -40C to +85C. The MAX6034 family of series-mode voltage references typically draw only 90A of supply current and can source 1mA and sink 200A of load current. Unlike conventional shunt-mode (two terminal) references that waste supply current and require an external resistor, devices in the MAX6034 family offer supply current that is virtually independent of supply voltage (16A/V, max variation) and do not require an external resistor. These internally compensated devices do not require an external compensation capacitor, but are stable with up to 1F of load capacitance. Eliminating the external compensation capacitor saves valuable board space in space-critical applications. The low dropout voltage and supply-independent, ultra-low supply current make the MAX6034 ideal for battery-powered applications. o Ultra-Small, 3-Pin SC70 Package o 0.2% (max) Initial Accuracy o 30ppm/C (max) Temperature Coefficient o 90A Supply Current o 200mV (max) Dropout Voltage at 1mA Load Current o Stable with CLOAD = 0 to 1F o No Output Capacitor Needed
Features
MAX6034
Ordering Information
PART MAX6034AEXR21-T MAX6034BEXR21-T MAX6034AEXR25-T MAX6034BEXR25-T MAX6034AEXR30-T MAX6034BEXR30-T MAX6034AEXR33-T MAX6034BEXR33-T MAX6034AEXR41-T MAX6034BEXR41-T TEMP RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PINPACKAGE 3 SC70-3 3 SC70-3 3 SC70-3 3 SC70-3 3 SC70-3 3 SC70-3 3 SC70-3 3 SC70-3 3 SC70-3 3 SC70-3 TOP MARK AJH AJM AJI AJN AJJ AJO AJK AJP AJL AJQ
Applications
Hand-Held Equipment Data-Acquisition Systems Industrial and Process Control Systems Battery-Operated Equipment Hard-Disk Drives
Selector Guide
PART MAX6034_EXR21-T MAX6034_EXR25-T MAX6034_EXR30-T MAX6034_EXR33-T MAX6034_EXR41-T VOUT 2.048 2.500 3.000 3.300 4.096 INPUT VOLTAGE (V) 2.5 to 5.5 (VOUT + 200mV) to 5.5 (VOUT + 200mV) to 5.5 (VOUT + 200mV) to 5.5 (VOUT + 200mV) to 5.5
Typical Operating Circuit
+SUPPLY INPUT (SEE SELECTOR GUIDE)
IN OUT * REFERENCE OUT
Pin Configuration
TOP VIEW
IN 1
MAX6034
GND OUT 2 *CAPACITOR IS OPTIONAL.
MAX6034
3
GND
SC70 1
________________________________________________________________ Maxim Integrated Products
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference MAX6034
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND) IN ...........................................................................-0.3V to +6.0V OUT .............................................................-0.3V to (VIN + 0.3V) Output Short Circuit to GND or IN..............................Continuous Continuous Power Dissipation (TA = +70C) 3-Pin SC70 (derate 2.9mW/C above +70C) .............235mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) ................................+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-MAX6034_21 (VOUT = 2.048V)
(VIN = 2.7V, 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 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 Per Change in Input Voltage VIN IIN IIN/VIN 2.5V VIN 5.5V Guaranteed by line-regulation test 2.5 85 4.1 5.5 115 16 V A A/V eOUT VOUT/ VIN tR COUT f = 0.1Hz to 10Hz f = 10Hz to 10kHz VIN = 2.7V 100mV, f = 120Hz To VOUT = 0.1% of final value, COUT = 50pF (Note 4) 0 45 46 80 85 1 VP-P VRMS dB s F VOUT TCVOUT VOUT/ VIN VOUT/ IOUT ISC VOUT/ cycle VOUT/ time TA = +25C MAX6034A_21 MAX6034B_21 2.5V VIN 5.5V Sourcing: 0 IOUT 1mA Sinking: 0 IOUT 200A Short to GND Short to IN (Note 3) 1000hr at TA = +25C MAX6034A_21 (0.2%) MAX6034B_21 (0.4%) 2.044 2.040 2.048 2.048 7 7 33 0.25 2.1 12 4 100 90 2.052 2.056 30 75 220 1.0 62 V ppm/C V/V mV/mA mA ppm ppm/ 1000hr SYMBOL CONDITIONS MIN TYP MAX UNITS
2
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference
ELECTRICAL CHARACTERISTICS-MAX6034_25 (VOUT = 2.500V)
(VIN = 2.7V, 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 Dropout Voltage Temperature Hysteresis 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 Per Change in Input Voltage VIN IIN IIN/VIN (VOUT + 200mV) VIN 5.5V Guaranteed by line-regulation test VOUT + 0.2 85 4.2 5.5 115 16 V A A/V eOUT VOUT/ VIN tR COUT f = 0.1Hz to 10Hz f = 10Hz to 10kHz VIN = 2.7V 100mV, f = 120Hz To VOUT = 0.1% of final value, COUT = 50pF (Note 4) 0 55 64 80 140 1 VP-P VRMS dB s F VOUT TCVOUT VOUT/ VIN VOUT/ IOUT ISC VIN VOUT VOUT/ cycle VOUT/ time TA = +25C MAX6034A_25 MAX6034B_25 (VOUT + 200mV) VIN 5.5V Sourcing: 0 IOUT 1mA Sinking: 0 IOUT 200A Short to GND Short to IN IOUT = 1mA (Note 5) (Note 3) 1000hr at TA = +25C MAX6034A_25 (0.2%) MAX6034B_25 (0.4%) 2.495 2.490 2.500 2.500 7 7 40 0.22 2.5 12 4 70 100 90 200 2.505 2.510 30 75 250 1.0 8 V ppm/C V/V mV/mA mA mV ppm ppm/ 1000hr SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6034
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3
Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference MAX6034
ELECTRICAL CHARACTERISTICS-MAX6034_30 (VOUT = 3.000V)
(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 Dropout Voltage Temperature Hysteresis 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 Per Change in Input Voltage VIN IIN IIN/VIN (VOUT + 200mV) VIN 5.5V Guaranteed by line-regulation test VOUT + 0.2 95 4.5 5.5 125 16 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 66 80 76 165 1 VP-P VRMS dB s F VOUT TCVOUT VOUT/ VIN VOUT/ IOUT ISC VIN - VOUT VOUT/ cycle VOUT/ time TA = +25C MAX6034A_30 MAX6034B_30 (VOUT + 200mV) VIN 5.5V Sourcing: 0 IOUT 1mA Sinking: 0 IOUT 200A Short to GND Short to IN IOUT = 1mA (Note 5) (Note 3) 1000hr at TA = +25C MAX6034A_30 (0.2%) MAX6034B_30 (0.4%) 2.994 2.988 3.000 3.000 7 7 43 0.30 2.6 13 4 70 100 90 200 mA mV ppm ppm/ 1000hr 3.006 3.012 30 75 280 1.3 8 mV/mA V ppm/C V/V SYMBOL CONDITIONS MIN TYP MAX UNITS
4
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference
ELECTRICAL CHARACTERISTICS-MAX6034_33 (VOUT = 3.300V)
(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 Dropout Voltage Temperature Hysteresis 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 Per Change in Input Voltage VIN IIN IIN/VIN (VOUT + 200mV) VIN 5.5V Guaranteed by line-regulation test VOUT + 0.2 95 3.8 5.5 125 16 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 73 88 76 200 1 VP-P VRMS dB s F VOUT TCVOUT VOUT/ VIN VOUT/ IOUT ISC VIN - VOUT VOUT/ cycle VOUT/ time TA = +25C MAX6034A_33 MAX6034B_33 (VOUT + 200mV) VIN 5.5V Sourcing: 0 IOUT 1mA Sinking: 0 IOUT 200A Short to GND Short to IN IOUT = 1mA (Note 5) (Note 3) 1000hr at TA = +25C MAX6034A_33 (0.2%) MAX6034B_33 (0.4%) 3.293 3.287 3.300 3.300 7 7 45 0.3 3 13 4 70 100 90 200 3.307 3.313 30 75 300 1.3 8.6 V ppm/C V/V mV/mA mA mV ppm ppm/ 1000hr SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6034
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference MAX6034
ELECTRICAL CHARACTERISTICS-MAX6034_41 (VOUT = 4.096V)
(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 Dropout Voltage Temperature Hysteresis 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 Per Change in Input Voltage VIN IIN IIN/VIN (VOUT + 200mV) VIN 5.5V Guaranteed by line-regulation test VOUT + 0.2 95 4.7 5.5 125 16 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 90 105 73 260 1 VP-P VRMS dB s F VOUT TCVOUT VOUT/ VIN VOUT/ IOUT ISC VIN - VOUT VOUT/ cycle VOUT/ time TA = +25C MAX6034A_41 MAX6034B_41 (VOUT + 200mV) VIN 5.5V Sourcing: 0 IOUT 1mA Sinking: 0 IOUT 200A Short to GND Short to IN IOUT = 1mA (Note 5) (Note 3) 1000hr at TA = +25C MAX6034A_41 (0.2%) MAX6034B_41 (0.4%) 4.088 4.080 4.096 4.096 7 7 50 0.35 3.4 13 7 70 100 90 200 mA mV ppm ppm/ 1000hr 4.104 4.112 30 75 350 1.5 9.8 mV/mA V ppm/C V/V SYMBOL CONDITIONS MIN TYP MAX UNITS
Note 1: Note 2: Note 3: Note 4: Note 5:
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 / VOUT is divided by the maximum T. Temperature hysteresis is defined as the change in +25C output voltage after cycling the device from TMIN to TMAX. Not production tested. Guaranteed by design. Dropout voltage is defined as the minimum differential voltage (VIN - VOUT) at which VOUT decreases by 0.2% from its original value at VIN = 5.0V (VIN = 2.7V for MAX6034_25).
6
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference MAX6034
Typical Operating Characteristics
(VIN = 2.7V for MAX6034_21/25, VIN = 5V for MAX6034_30/33/41, IOUT = 0, TA = +25C, unless otherwise noted.) (Note 6)
MAX6034_21 OUTPUT VOLTAGE TEMPERATURE DRIFT (VOUT = 2.048V)
MAX6034 toc01
MAX6034_41 OUTPUT VOLTAGE TEMPERATURE DRIFT (VOUT = 4.096V)
THREE TYPICAL PARTS 4.102 OUTPUT VOLTAGE (V)
MAX6034 toc02
MAX6034_21 LONG-TERM DRIFT (VOUT = 2.048V)
MAX6034 toc03
2.053 THREE TYPICAL PARTS 2.051 OUTPUT VOLTAGE (V)
4.106
2.050
2.049
4.098
OUTPUT VOLTAGE (V)
2.049
2.048
2.047
4.094
2.047 2.045 4.090
2.043 -40 -15 10 35 60 85 TEMPERATURE (C)
4.086 -40 -15 10 35 60 85 TEMPERATURE (C)
2.046 0 200 400 600 800 1000 TIME (hr)
MAX6034_41 LONG-TERM DRIFT (VOUT = 4.096V)
MAX6034 toc04
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX6034 toc05
SUPPLY CURRENT vs. TEMPERATURE
MAX6034 toc06
4.098
105
110 105 SUPPLY CURRENT (A) 100 95 90 85 VIN = 2.7V VIN = 5.5V
SUPPLY CURRENT (A)
OUTPUT VOLTAGE (V)
4.097
100
4.096
95
4.095
90
4.094 0 200 400 600 800 1000 TIME (hr)
85 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)
80 -40 -15 10 35 60 85 TEMPERATURE (C)
MAX6034_25 DROPOUT VOLTAGE vs. SOURCE CURRENT (VOUT = 2.500V)
MAX6034 toc07
MAX6034_25 DROPOUT VOLTAGE vs. SINK CURRENT (VOUT = 2.500V)
MAX6034 toc08
MAX6034_41 DROPOUT VOLTAGE vs. SOURCE CURRENT (VOUT = 4.096V)
MAX6034 toc09
0.6 0.5 DROPOUT VOLTAGE (V) 0.4 0.3 0.2 0.1 0 0 1 2 3 4 5 SOURCE CURRENT (mA) TA = -40C TA = +25C TA = +85C
0.15
0.6 0.5 DROPOUT VOLTAGE (V) 0.4 TA = +25C 0.3 0.2 0.1 0 TA = -40C TA = +85C
DROPOUT VOLTAGE (V)
0.10
TA = +85C TA = +25C
0.05
TA = -40C 0 0 0.2 0.4 0.6 0.8 1.0 SINK CURRENT (mA)
0
1
2
3
4
5
SOURCE CURRENT (mA)
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference MAX6034
Typical Operating Characteristics (continued)
(VIN = 2.7V for MAX6034_21/25, VIN = 5V for MAX6034_30/33/41, IOUT = 0, TA = +25C, unless otherwise noted.) (Note 6)
MAX6034_41 DROPOUT VOLTAGE vs. SINK CURRENT (VOUT = 4.096V)
MAX6034 toc10
MAX6034_21 LOAD REGULATION (VOUT = 2.048V)
MAX6034 toc11
MAX6034_41 LOAD REGULATION (VOUT = 4.096V)
TA = +85C OUTPUT VOLTAGE CHANGE (mV) 2 1 TA = -40C 0 TA = -40C -1 SINK -2 SOURCE -3 TA = +85C TA = +25C TA = +25C
MAX6034 toc12
0.15
3 OUTPUT VOLTAGE CHANGE (mV) 2 1 TA = -40C 0 -1 -2 SOURCE -3 TA = -40C SINK TA = +25C TA = +85C TA = +85C TA = +25C
3
DROPOUT VOLTAGE (V)
0.10 TA = +85C TA = +25C 0.05
TA = -40C 0 0 0.2 0.4 0.6 0.8 1.0 SINK CURRENT (mA)
-1
0
1
2
3
4
5
-1
0
1
2
3
4
5
LOAD CURRENT (mA)
LOAD CURRENT (mA)
MAX6034_25 LINE REGULATION (VOUT = 2.500V)
MAX6034 toc13
MAX6034_25 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (VOUT = 2.500V)
MAX6034 toc14
MAX6034_41 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (VOUT = 4.096V)
MAX6034 toc15
20 OUTPUT VOLTAGE CHANGE (V) 0 TA = -40C -20
0
0
-20
-20
PSRR (dB)
-40 -60 -80 -100 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) TA = +25C TA = +85C
-60
PSRR (dB) 1000
-40
-40
-60
-80
-80
-100 0.001
0.01
0.1
1
10
100
-100 0.001
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
FREQUENCY (kHz)
MAX6034_25 LINE TRANSIENT (VOUT = 2.500V)
MAX6034_41 LINE TRANSIENT (VOUT = 4.096V)
MAX6034 toc16
MAX6034 toc17
2.95V VIN 2.70V
5.5V VIN 5.0V
VOUT 50mV/div AC-COUPLED CLOAD = 0 100s CLOAD = 0 100s
VOUT 100mV/div AC-COUPLED
8
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference
Typical Operating Characteristics (continued)
(VIN = 2.7V for MAX6034_21/25, VIN = 5V for MAX6034_30/33/41, IOUT = 0, TA = +25C, unless otherwise noted.) (Note 6)
MAX6034_25 LOAD TRANSIENT
MAX6034 toc18
MAX6034
MAX6034_25 LOAD TRANSIENT
MAX6034 toc19
+10A IOUT -10A
+10A IOUT -10A
CLOAD = 0 ILOAD = 10A VOUT = 2.5V 1ms
VOUT 10mV/div AC-COUPLED
VOUT 2mV/div AC-COUPLED CLOAD = 1F ILOAD = 10A VOUT = 2.5V 1ms
MAX6034_41 LOAD TRANSIENT
MAX6034 toc20
MAX6034_41 LOAD TRANSIENT
MAX6034 toc21
+10A IOUT -10A
+10A IOUT -10A
VOUT 10mV/div AC-COUPLED CLOAD = 0 ILOAD = 10A VOUT = 4.096V 1ms CLOAD = 1F ILOAD = 10A VOUT = 4.096V 1ms
VOUT 2mV/div AC-COUPLED
MAX6034_25 LOAD TRANSIENT
MAX6034 toc22
MAX6034_25 LOAD TRANSIENT
MAX6034 toc23
+1mA IOUT -0.2mA
+1mA IOUT -0.2mA
VOUT 100mV/div AC-COUPLED CLOAD = 0 ILOAD = +1mA/-0.2mA VOUT = 2.5V 1ms CLOAD = 1F ILOAD = +1mA/-0.2mA VOUT = 2.5V 1ms
VOUT 20mV/div AC-COUPLED
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference MAX6034
Typical Operating Characteristics (continued)
(VIN = 2.7V for MAX6034_21/25, VIN = 5V for MAX6034_30/33/41, IOUT = 0, TA = +25C, unless otherwise noted.) (Note 6)
MAX6034_41 LOAD TRANSIENT
MAX6034 toc24
MAX6034_41 LOAD TRANSIENT
MAX6034 toc25
MAX6034_25 TURN-ON TRANSIENT
MAX6034 toc26
+1mA IOUT -0.2mA
+1mA IOUT -0.2mA
2.7V VIN 0 2.5V VOUT CLOAD = 50pF VOUT = 2.5V 40s 0
VOUT 100mV/div AC-COUPLED CLOAD = 0 ILOAD = +1mA/-0.2mA VOUT = 4.096V 1ms CLOAD = 1F ILOAD = +1mA/-0.2mA VOUT = 4.096V 1ms
VOUT 50mV/div AC-COUPLED
MAX6034_41 TURN-ON TRANSIENT
MAX6034 toc27
MAX6034_25 OUTPUT NOISE (0.1Hz TO 10Hz)
MAX6034 toc28
MAX6034_41 OUTPUT NOISE (0.1Hz TO 10Hz)
MAX6034 toc29
VOUT = 2.5V 5V VIN 0 50V/div 4.096V VOUT CLOAD = 50pF VOUT = 4.096V 40s 0
VOUT = 4.096V
50V/div
1s
1s
Note 6: Many of the MAX6034 family Typical Operating Characteristics are extremely similar. The extremes of these characteristics are found in the MAX6034_21 (2.048V output) and the MAX6034_41 (4.096V output). The Typical Operating Characteristics of the remainder of the MAX6034 family typically lie between those two extremes and can be estimated based on their output voltages.
10
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference
Pin Description
PIN 1 2 3 NAME IN OUT GND FUNCTION Supply Voltage Input Reference Voltage Output Ground
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 for the MAX6034 family is 100ppm.
MAX6034
Detailed Description
The MAX6034 family of precision bandgap references use a proprietary temperature coefficient curvature-correction circuit and laser-trimmed, thin-film resistors, resulting in a low temperature coefficient of less than 30ppm/C and initial accuracy of better than 0.2%. These devices can source up to 1mA and sink up to 200A with less than 200mV of dropout voltage, making them attractive for use in low-voltage applications.
Turn-On Time
These devices typically turn on and settle to within 0.1% of their final value in 85s to 260s depending on the device. The turn-on time can increase up to 1.25ms with the device operating at the minimum dropout voltage and the maximum load.
Temperature Coefficient vs. Operating Temperature Range for a 1LSB Maximum Error
In a data converter application, the reference voltage of the converter must stay within a certain limit to keep the error in the data converter smaller than the resolution limit through the operating temperature range. Figure 1 shows the maximum allowable reference voltage temperature coefficient to keep the conversion error to less than 1LSB, as a function of the operating temperature range (TMAX - TMIN) with the converter resolution as a parameter. The graph assumes the reference-voltage temperature coefficient as the only parameter affecting accuracy. In reality, the absolute static accuracy of a data converter is dependent on the combination of many parameters such as integral nonlinearity, differential nonlinearity, offset error, gain error, as well as voltage reference changes.
Applications Information
Input Bypassing
For the best line-transient performance, decouple the input with a 0.1F ceramic capacitor as shown in the Typical Operating Circuit. Locate the capacitor as close to IN as possible.
Output/Load Capacitance
Devices in the MAX6034 family do not require an output capacitor for frequency stability. They are stable for capacitive loads from 0 to 1F. However, in applications where the load or the supply can experience step changes, an output capacitor reduces the amount of overshoot (or undershoot) and improves the circuit's transient response. Many applications do not need an external capacitor, and the MAX6034 can offer a significant advantage in these applications when board space is critical.
Supply Current
The quiescent supply current of the series-mode MAX6034 family is typically 90A and is virtually independent of the supply voltage, with only a 16A/V (max) variation with supply voltage. When the supply voltage is below the minimum-specified input voltage (as during turn-on), the device can draw up to 50A beyond the nominal supply current. The input-voltage source must be capable of providing this current to ensure reliable turn-on.
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11
Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference MAX6034
10,000 1000 100 TEMPERATURE COEFFICIENT (ppm/C) 8 BIT 10 1 0.1 0.01 1 10 OPERATING TEMPERATURE RANGE (TMAX - TMIN) (C) 10 BIT 12 BIT 14 BIT 16 BIT 18 BIT 20 BIT 100
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1LSB Maximum Error
Chip Information
TRANSISTOR COUNT: 113 PROCESS: BiCMOS
12
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Precision, Micropower, Low-Dropout, SC70 Series Voltage Reference
Package Information
SC70, 3L.EPS
MAX6034
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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