MAX6138

0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages


Please check latest availability status for a specific part variant.

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 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/°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.
MAX6138: Typical Operating Circuit MAX6138: Typical Operating Circuit Enlarge+

Key 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 28µVRMS 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

Applications/Uses

  • Cell Phones
  • Industrial Process Controls
  • Notebook Computers
  • Portable Battery-Powered Equipment
Part NumberVOUT
(V)
Temp. Coeff.
(ppm/°C)
Initial Accuracy
(% max)
IREV
(µA)
IREV
(mA)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
max@ +25°CminmaxSee Notes
MAX6138A 
1.22
2.048
3
3.3
4.096
5
250.16015-40 to +85
SOIC(N)/8
$2.14 @1k
MAX6138B 
1.22
2.048
2.5
3
3.3
4.096
5
0.2
SOIC(N)/8
$1.99 @1k
MAX6138C 
1.22
2.048
2.5
3
3.3
4.096
5
0.5
SOIC(N)/8
$1.70 @1k
See All Voltage References (170)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources


MAX6078A
Low-Power, Low-Drift, Low-Noise Voltage Reference

  • ±0.04% Initial Accuracy
  • 10ppm/°C (Max) Temperature Drift
  • 12μVPP Noise (0.1Hz to 10Hz) at 2.5V

MAX6078B
Low-Power, Low-Drift, Low-Noise Voltage Reference

  • ±0.04% Initial Accuracy
  • 10ppm/°C (Max) Temperature Drift
  • 12μVPP Noise (0.1Hz to 10Hz) at 2.5V