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MAX6138 Datasheet

  • MAX6138

  • " 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Re...

  • 400.64KB

  • Maxim   Maxim

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19-2090; Rev 0; 10/01
0.1%, 25ppm, SC70 Shunt Voltage Reference
with Multiple Reverse Breakdown Voltages
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,
4.096V, and 5.0V. Ideal for space-critical applications,
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/掳C temperature coefficient, the device is
offered in three grades of initial accuracy ranging from
0.1% to 0.5%. The MAX6138 has a 60碌A 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.
o
Ultra-Small 3-Pin SC70 Package
o
0.1% (max) Initial Accuracy
o
25ppm/掳C (max) Temperature Coefficient
Guaranteed Over -40掳C to +85掳C Temperature
Range
o
Wide Operating Current Range: 60碌A to 15mA
o
Low 28碌V
RMS
Output Noise (10Hz to 10kHz)
o
1.2205V, 2.048V, 2.5V, 3.0V, 4.096V, and 5.0V
Fixed Reverse Breakdown Voltages
o
No Output Capacitors Required
o
Stable with Capacitive Loads
Features
MAX6138
Selector Guide
PART
TEMP.
RANGE
OUTPUT
PIN-
VOLTAGE
PACKAGE
(V)
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
1.2205
2.0480
2.5000
3.0000
4.0960
5.0000
Applications
MAX6138_EXR12-T -40掳C to +85掳C
Portable, Battery-Powered Equipment
Notebook Computers
Cell Phones
Industrial Process Control
MAX6138_EXR21-T -40掳C to +85掳C
MAX6138_EXR25-T -40掳C to +85掳C
MAX6138_EXR30-T -40掳C to +85掳C
MAX6138_EXR41-T -40掳C to +85掳C
MAX6138_EXR50-T -40掳C to +85掳C
Ordering Information appears at end of data sheet.
Typical Operating Circuit
Pin Configuration
TOP VIEW
+
1
R
S
V
S
I
SHUNT
+ I
LOAD
I
LOAD
V
R
MAX6138
-
2
3
N.C.*
I
SHUNT
SC70
*PIN 3 MUST BE LEFT FLOATING
OR CONNECTED TO PIN 2.
MAX6138
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

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