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MAX6138AEXR25+T

P1-P3P4-P6P7-P9P10-P12P13-P13
General Description
The MAX6138 is a precision, two-terminal shunt mode,
bandgap voltage reference available in fixed reverse
breakdown voltages of 1.2205V, 2.048V, 2.5V, 3.0V,
3.3V, 4.096V, and 5.0V. Ideal for space-critical applica-
tions, the MAX6138 is offered in the subminiature 3-pin
SC70 surface-mount package (1.8mm X 1.8mm), 50%
smaller than comparable devices in SOT23 surface-
mount packages.
Laser-trimmed resistors ensure precise initial accuracy.
With a 25ppm/°C temperature coefficient, the device is
offered in three grades of initial accuracy ranging from
0.1% to 0.5%. The MAX6138 has a 60µA to 15mA shunt-
current capability with low-dynamic impedance, ensuring
stable reverse breakdown voltage accuracy over a wide
range of operating temperatures and currents.
The MAX6138 does not require an external stabilizing
capacitor while ensuring stability with capacitive loads.
The MAX6138 is a higher precision device in a smaller
package than the LM4040/LM4050.
Applications
Portable, Battery-Powered Equipment
Notebook Computers
Cell Phones
Industrial Process Control
Features
♦ Ultra-Small 3-Pin SC70 Package
♦ 0.1% (max) Initial Accuracy
♦ 25ppm/°C (max) Temperature Coefficient
Guaranteed Over -40°C to +85°C Temperature
Range
♦ Wide Operating Current Range: 60µA to 15mA
♦ Low 28µV
RMS
Output Noise (10Hz to 10kHz)
♦ 1.2205V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V
Fixed Reverse Breakdown Voltages
♦ No Output Capacitors Required
♦ Stable with Capacitive Loads
MAX6138
0.1%, 25ppm, SC70 Shunt Voltage Reference
with Multiple Reverse Breakdown Voltages
________________________________________________________________ Maxim Integrated Products 1
MAX6138
I
LOAD
I
SHUNT
R
S
V
S
V
R
I
SHUNT
+ I
LOAD
-
1
3 N.C.*
+
MAX6138
SC70
TOP VIEW
2
*PIN 3 MUST BE LEFT FLOATING
OR CONNECTED TO PIN 2.
PART
TEMP
RANGE
PIN-
PACKAGE
OUTPUT
VOLTAGE
(V)
MAX6138_EXR12-T -40°C to +85°C 3 SC70-3 1.2205
MAX6138_EXR21-T -40°C to +85°C 3 SC70-3 2.0480
MAX6138_EXR25-T -40°C to +85°C 3 SC70-3 2.5000
MAX6138_EXR30-T -40°C to +85°C 3 SC70-3 3.0000
MAX6138_EXR33-T -40°C to +85°C 3 SC70-3 3.3000
MAX6138_EXR41-T -40°C to +85°C 3 SC70-3 4.0960
MAX6138_EXR50-T -40°C to +85°C 3 SC70-3 5.0000
Pin Configuration
Selector Guide
Typical Operating Circuit
19-2090; Rev 2; 4/04
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.
Ordering Information appears at end of data sheet.
MAX6138
0.1%, 25ppm, SC70 Shunt Voltage Reference
with Multiple Reverse Breakdown Voltages
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX6138_12 (1.2205V)
(I
R
= 100µA, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
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.
Reverse Current (cathode to anode) ..................................20mA
Forward Current (anode to cathode) ..................................10mA
Continuous Power Dissipation (T
A
A
= +70°C)
3-Pin SC70 (derate 2.17mW/°C above +70°C) ...........174mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6138A (0.1%) 1.2193 1.2205 1.2217
MAX6138B (0.2%) 1.2181 1.2205 1.2229
Reverse Breakdown Voltage
(Note 2)
V
R
T
A
= +25°C
MAX6138C (0.5%) 1.2144 1.2205 1.2266
V
Minimum Operating Current I
RMIN
45 60 µA
Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
TC 4 25 ppm/°C
I
RMIN
≤ I
R
≤ 1mA 0.3 1.0
Reverse Breakdown Voltage
Change with Operating
Current Change
∆V
R
/∆I
R
1mA ≤ I
R
≤ 12mA 2.5 8.0
mV
Reverse Dynamic
Impedance (Note 3)
Z
R
I
R
= 1mA, f = 120Hz, I
AC
= 0.1I
R
0.3 0.8 Ω
Wideband Noise e
N
I
R
= 10µA, 10Hz ≤ f ≤ 10kHz 20 µV
RMS
Reverse Breakdown Voltage
∆V
R
t = 1000h
120 ppm
MAX6138
0.1%, 25ppm, SC70 Shunt Voltage Reference
with Multiple Reverse Breakdown Voltages
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—MAX6138_21 (2.048V)
(I
R
= 100µA, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
ELECTRICAL CHARACTERISTICS—MAX6138_25 (2.5V)
(I
R
= 100µA, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6138A (0.1%) 2.0460 2.0480 2.0500
MAX6138B (0.2%) 2.0439 2.0480 2.0521
Reverse Breakdown
Voltage (Note 2)
V
R
T
A
= +25°C
MAX6138C (0.5%) 2.0378 2.0480 2.0582
V
M i ni m um Op er ati ng C ur r ent I
RMIN
45 65 µA
Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
TC 4 25 ppm/°C
I
RMIN
≤ I
R
≤ 1mA 0.3 1.0
Reverse Breakdown
Voltage Change with
Operating Current Change
∆V
R
/∆I
R
1mA ≤ I
R
≤ 15mA 2.5 8.0
mV
Reverse Dynamic
Impedance (Note 3)
Z
R
I
R
= 1mA, f = 120Hz, I
AC
= 0.1I
R
0.3 0.8 Ω
Wideband Noise e
N
10Hz ≤ f ≤ 10kHz 28 µV
RMS
Rever se Br eakd ow n
V ol tag e Long - Ter m S tab i l i ty
∆V
R
t = 1000h 120 ppm
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6138A (0.1%) 2.4975 2.5000 2.5025
MAX6138B (0.2%) 2.4950 2.5000 2.5050
Reverse Breakdown Voltage
(Note 2)
V
R
T
A
= +25°C
MAX6138C (0.2%) 2.4875 2.5000 2.5125
V
Minimum Operating Current I
RMIN
45 65 µA
Reverse Voltage Temperature
Coefficient (Notes 2, 3)
TC 4 25 ppm/°C
Reverse Breakdown Voltage
Change with Operating Current
Change
∆V
R
/∆I
R
I
RMIN
≤ I
R
≤ 1mA 0.3 1.0 mV
Rever se Br eakd ow n V ol tag e
C hang e w i th Op er ati ng C ur r ent
C hang e
∆V
R
/∆I
R
1mA ≤ I
R
≤ 15mA 2.5 8.0 mV
Reverse Dynamic Impedance
(Note 3)
Z
R
I
R
= 1mA, f = 120Hz, I
AC
= 0.1I
R
0.3 0.8 Ω
Wideband Noise e
N
10Hz ≤ f ≤ 10kHz 35 µV
RMS
Reverse Breakdown Voltage
Long-Term Stability
∆V
R
t = 1000h 120 ppm
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX6138AEXR25+T

Mfr. #:
Buy MAX6138AEXR25+T
Manufacturer:
Maxim Integrated
Description:
Voltage References .1% 25ppm Shunt Voltage Ref
Lifecycle:
New from this manufacturer.
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