General Description
The MAX6061–MAX6068 are precision, low-dropout,micropower voltage references. These three-terminal devices are available with output voltage options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, and 5V.They feature a proprietary curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low temperature coefficient of 20ppm/°C (max) and an initial accuracy of ±0.2% (max). Specifications apply to the extended temperature range (-40°C to +85°C).
The MAX6061–MAX6068 typically draw only 90μA of supply current and can source 5mA or sink 2mA of load current. Unlike conventional shunt-mode (two-terminal)references that waste supply current and require an external resistor, these devices offer a supply current that is virtually independent of the supply voltage (8μA/V variation) and do not require an external resis-tor. Additionally, the internally compensated devices do not require an external compensation capacitor.Eliminating the external compensation capacitor saves valuable board area in space-critical applications. Low dropout voltage and supply independent, ultra-low sup-ply current make these devices ideal for battery-operat-ed, high-performance, low-voltage systems.
The MAX6061–MAX6068 are available in a 3-pin SOT23package.
Applications
Analog-to-Digital Converters (ADCs)Portable Battery-Powered Systems Notebook Computers PDAs, GPSs, DMMs Cellular Phones
Precision 3V/5V Systems
Features
o Ultra-Small 3-Pin SOT23 Package o ±0.2% (max) Initial Accuracy
o 20ppm/°C (max) Temperature Coefficient o 5mA Source Current o 2mA Sink Current
o No Output Capacitor Required o Stable with Capacitive Loads o 90μA (typ) Quiescent Supply Current o 200mV (max) Dropout at 1mA Load Current o Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V,3V, 4.096V, 4.5V, 5V
o 13μVp-p Noise 0.1Hz to 10Hz (MAX6061)
MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
________________________________________________________________Maxim Integrated Products
1
19-1659; Rev 1; 4/01
Ordering Information
Pin Configuration
Selector Guide
Note:There is a minimum order increment of 2500 pieces for SOT23 packages.
Typical Operating Circuit appears at end of data sheet.
Ordering Information continued at end of data sheet.
For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at https://www.doczj.com/doc/5b7801157.html,.
M A X 6061–M A X 6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References 2_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS —MAX6061, V OUT = 1.25V
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.
(Voltages Referenced to GND)
IN.........................................................................-0.3V to +13.5V OUT .............................................................-0.3V to (V IN + 0.3V)Output Short-Circuit Duration to GND or IN (V IN < 6V)...Continuous Output Short-Circuit Duration to GND or IN (V IN ≥6V)................60s
Continuous Power Dissipation (T A = +70°C)
3-Pin SOT23 (derate 4.0mW/°C above +70°C)............320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°C
MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
_______________________________________________________________________________________3
ELECTRICAL CHARACTERISTICS —MAX6068, V OUT = 1.80V
M A X 6061–M A X 6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References 4_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS —MAX6062, V OUT = 2.048V
(V IN = +5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
_______________________________________________________________________________________5
ELECTRICAL CHARACTERISTICS —MAX6066, V OUT = 2.500V
(V IN = +5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
M A X 6061–M A X 6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References 6_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS —MAX6063, V OUT = 3.0V
(V = +5V, I = 0, T = T to T , unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
_______________________________________________________________________________________7
ELECTRICAL CHARACTERISTICS —MAX6064, V OUT = 4.096V
(V IN = +5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
M A X 6061–M A X 6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References 8_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS —MAX6067, V OUT = 4.500V
(V IN = +5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
_______________________________________________________________________________________9
ELECTRICAL CHARACTERISTICS —MAX6065, V OUT = 5.000V
(V
= +5.2V, I = 0, T = T to T , unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
Note 1:All devices are 100% production tested at T A = +25°C and are guaranteed by design for T A = T MIN to T MAX , as specified.Note 2:Temperature Coefficient is measured by the “box ” method, i.e., the maximum ?V OUT is divided by the maximum ?T.
Note 3:Temperature Hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T MIN to T MAX .Note 4:
Dropout voltage is the minimum input voltage at which V OUT changes ≤0.2% from V OUT at V IN = 5.0V (V IN = 5.5V for MAX6065).
M A X 6061–M A X 6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References 10______________________________________________________________________________________
M A X 6061/68 t o c 09
FREQUENCY (kHz)
P S R R (d B )
-10-20-30-40-50-60
-70-80
-90
0.001
1
10
100
0.01
0.1
1000
MAX6061
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
Typical Operating Characteristics
(V IN = +5V for MAX6061–MAX6068, V IN = +5.5V for MAX6065, I OUT = 0, T A = +25°
C, unless otherwise noted.) (Note 5)
2.046
2.0472.0492.0482.0502.051
-40
10
-15
35
60
85
MAX6062
OUTPUT VOLTAGE TEMPERATURE DRIFT
TEMPERATURE (°C)
O U T P U T V O L T A G E (V )
4.998
4.999
5.001
5.000
5.0025.003
-40
10
-15
35
60
85
MAX6065
OUTPUT VOLTAGE TEMPERATURE DRIFT
TEMPERATURE (°C)
O U T P U T V O L T A G E (V )
-300
-200-100010020030024681012
MAX6061LINE REGULATION
INPUT VOLTAGE (V)
O U T P U T V O L T A G E C H A N G E (μV )
-1200
-600-800
-1000-400-20002005
9
7
11
13
MAX6065LINE REGULATION
INPUT VOLTAGE (V)
O U T P U T V O L T A G E C H A N G E (μV )
-310-1-2
2345-4
-2
2
4
LOAD CURRENT (mA)
O U T P U T V O L T A G E C H A N G E (m V
)
MAX6061LOAD REGULATION
-6
20-2-4
4861012
-6
-2
-4
2
4
6
LOAD CURRENT (mA)
O U T P U T V O L T A G E C H A N G E (m V )
MAX6065LOAD REGULATION
00.100.050.20
0.150.250.300
2
1
3
4
5
MAX6066DROPOUT VOLTAGE vs. LOAD CURRENT
LOAD CURRENT (mA)
D R O P O U T V O L T A G
E (V )
0.05
0.15
0.10
0.200.25
2
1
3
4
5
LOAD CURRENT (mA)
D R O P O U T V O L T A G
E (V )
MAX6065DROPOUT VOLTAGE vs. LOAD CURRENT
MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
______________________________________________________________________________________11
-70-80
0.001
10
1000
-60-50-40-30-20-100FREQUENCY (kHz)
P S R R (d B )
0.1
MAX6065
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
M A X 6061/68 t o c 10
70
80
90
100
1102
4
6
8
10
12
M A X 6061/68 t o c 11
INPUT VOLTAGE (V)
S U P P L Y C U R R E N T (μA )
MAX6061SUPPLY CURRENT vs. INPUT VOLTAGE
80
8595901051101001155
7
9
11
13
INPUT VOLTAGE (V)
S U P P L Y C U R R E N T (μA )MAX6065SUPPLY CURRENT vs. INPUT VOLTAGE
7080
90
100
110120
-40
10
-15
35
60
85
TEMPERATURE (°C)
S U P P L Y C U R R E N T (μA
)
MAX6061SUPPLY CURRENT vs. TEMPERATURE
8595
105
115-40
10
-15
35
60
85
TEMPERATURE (°C)
S U P P L Y C U R R E N T (μA )
MAX6065SUPPLY CURRENT vs. TEMPERATURE
00.001
10
1000
4020
6080100140120160180200220
M A X 6061/68 t o c 15
FREQUENCY (kHz)
O U T P U T I M P E D A N C E (?)
0.1
MAX6061
OUTPUT IMPEDANCE vs. FREQUENCY
18000.001
10
100040206010080120140160M A X 6061/68 t o c 16
FREQUENCY (kHz)
O U T P U T I M P E D A N C E (?)
0.1
MAX6065
OUTPUT IMPEDANCE vs. FREQUENCY
V OUT 10μV/div 1s/div MAX6061
0.1Hz TO 10Hz OUTPUT NOISE
M A X 6061/68 t o c 17
Typical Operating Characteristics (continued)
(V IN = +5V for MAX6061–MAX6068, V IN = +5.5V for MAX6065, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)
V OUT 10μV/div
1s/div
MAX6065NOISE
M A X 6061/68 t o c 18
M A X 6061–M A X 6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References 12______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V IN = +5V for MAX6061–MAX6068, V IN = +5.5V for MAX6065, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)
I OUT 500μA/div
V OUT
AC-COUPLED
20mV/div
400μs/div
MAX6065LOAD TRANSIENT
(I OUT = ±250μA, C L = 1μF, V IN = 5.5V)
+250μA
-250μA
MAX6061/68 toc24
V OUT 500mV/div
V IN 5V/div
10μs/div
MAX6061
TURN-ON TRANSIENT
(C L = 50pF)
M A X 6061/68 t o c 19
V OUT 2V/div
V IN 5V/div
40μs/div
MAX6065
TURN-ON TRANSIENT
(C L = 50pF)
M A X 6061/68 t o c 20
I OUT 500μA/div
V OUT
AC-COUPLED 100mV/div 400μs/div
MAX6061LOAD TRANSIENT
(I OUT = ±250μA, V IN = 5.0, C L = 0)
I OUT +250μA I OUT -250μA
MAX6061/68 toc21
I OUT 500μA/div
V OUT
AC-COUPLED
50mV/div
400μs/div
MAX6065LOAD TRANSIENT
(I OUT = ±250μA, C L = 0, V IN = 5.5V)
+250μA
-250μA
MAX6061/68 toc22
I OUT 500μA/div
V OUT
AC-COUPLED
10mV/div
400μs/div
MAX6061LOAD TRANSIENT
(I OUT = ±250μA, V IN = 5.0V, C L = 1μF)
+250μA -250μA
MAX6061/68 toc23
MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
______________________________________________________________________________________13
Typical Operating Characteristics (continued)
(V IN = +5V for MAX6061–MAX6068, V IN = +5.5V for MAX6065, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)
I OUT 5mA/div
V OUT
AC-COUPLED 100mV/div
400μs/div MAX6061LOAD TRANSIENT
(V IN = 5.0V, C L = 0, I OUT = ±2mA)
+2mA
-2mA
MAX6061/68 toc25I OUT 5mA/div
V OUT
AC-COUPLED
50mV/div
400μs/div
MAX6065LOAD TRANSIENT
(C L = 0, I OUT = ±2mA, V IN = 5.5V)
+2mA -2mA
MAX6061/68 toc26
I OUT 5mA/div
V OUT
AC-COUPLED
50mV/div 400μs/div MAX6061LOAD TRANSIENT
(V IN = 5.0V, C L = 1μF, I OUT = ±2mA)+2mA
-2mA
MAX6061/68 toc27I OUT 5mA/div
V OUT
AC-COUPLED
20mV/div
400μs/div
MAX6065LOAD TRANSIENT
(C L = 1μF, I OUT = ±2mA, V IN = 5.5V)
+2mA -2mA
MAX6061/68 toc28
I OUT 5mA/div
V OUT
AC-COUPLED 200mV/div
400μs/div MAX6061LOAD TRANSIENT
(V IN = 5.0V, C L = 0, I OUT = ±4mA)
+4mA
-4mA
MAX6061/68 toc29
I OUT 5mA/div
V OUT
AC-COUPLED 100mV/div
400μs/div
MAX6065LOAD TRANSIENT
(I OUT = ±5mA, C L = 0, V IN = 5.5V)
+5mA
-5mA
MAX6061/68 toc30
M A X 6061–M A X 6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References 14
______________________________________________________________________________________
I OUT 5mA/div
V OUT
AC-COUPLED
50mV/div
400μs/div
MAX6065LOAD TRANSIENT
(I OUT = ±5mA, C L = 1μF, V IN = 5.5V)
+5mA
-5mA
MAX6061/68 toc32
V IN
500mV/div
V OUT
AC-COUPLED
20mV/div MAX6061LINE TRANSIENT
(C L = 0)
+0.25
-0.25
MAX6061/68 toc33
40μs/div V IN
500mV/div
V OUT
AC-COUPLED
20mV/div
40μs/div
MAX6065LINE TRANSIENT
(C L = 0)
+0.25-0.25
MAX6061/68 toc34
Typical Operating Characteristics (continued)
(V IN = +5V for MAX6061–MAX6068, V IN = +5.5V for MAX6065, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)
I OUT 5mA/div
V OUT
AC-COUPLED
50mV/div
400μs/div MAX6061LOAD TRANSIENT
(V IN = 5.0V, C L = 1μF, I OUT = ±4mA)
+4mA
-4mA
MAX6061/68 toc31
Note 5:Many of the MAX6061 family Typical Operating Characteristics are extremely similar. The extremes of these characteristics
are found in the MAX6061 (1.25V output) and the MAX6065 (5.0V output). The Typical Operating Characteristics of the remainder of the MAX6061 family, typically lie between these two extremes and can be estimated based on their output voltages.
MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
______________________________________________________________________________________15
Applications Information
Input Bypassing
For the best line-transient performance, decouple the input with a 0.1μF ceramic capacitor as shown in the Typical Operating Circuit . Locate the capacitor as close to IN as possible. Where transient performance is less important, no capacitor is necessary.
Output/Load Capacitance
Devices in the MAX6061 family do not require an output capacitance for frequency stability.I n applications where the load or the supply can experience step changes, an output capacitor of at least 0.1μF will reduce the amount of overshoot (undershoot) and improve the circuit ’s transient response. Many applica-tions do not require an external capacitor, and the MAX6061 family can offer a significant advantage in these applications when board space is critical.
Supply Current
The quiescent supply current of the series-mode MAX6061 family is typically 90μA and is virtually inde-pendent of the supply voltage, with only an 8μA/V (max)variation with supply voltage. Unlike series references,shunt-mode references operate with a series resistor connected to the power supply. The quiescent current of a shunt-mode reference is thus a function of the input voltage. Additionally, shunt-mode references have to be biased at the maximum expected load current, even if the load current is not present at the time. I n the MAX6061 family, the load current is drawn from the input voltage only when required, so supply current is not wasted and efficiency is maximized at all input volt-ages. This improved efficiency reduces power dissipa-tion and extends battery life. When the supply voltage is below the minimum specified input voltage (as during turn-on), the devices can draw up to 400μA beyond the nominal supply current. The input voltage source must be capable of providing this current to ensure reliable turn-on.
Output Voltage Hysteresis
Output voltage hysteresis is the change of output voltage at T A = +25°C 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 tem-perature hysteresis value is 130ppm.
Turn-On Time
These devices typically turn on and settle to within 0.1%of their final value in 50μs to 300μs, 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.
Chip Information
TRANSISTOR COUNT: 117PROCESS: BiCMOS
Ordering Information (continued)
M A X 6061–M A X 6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
Package Information
Maxi m cannot assume responsi bi li ty for use of any ci rcui try other than ci rcui try enti rely embodi ed i n a Maxi m product. No ci rcui t patent li censes are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
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Printed USA
is a registered trademark of Maxim Integrated Products.