MAX881R

PRODUCTION

Low-Noise Bias Supply in µMAX with Power OK for GaAsFET PA

1mV_P-P Output Voltage Ripple

Data Sheet (Rev. 2) Product Selection Table

Part Models: 2
1ku List Price: Starting From $2.63

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Part Details

Small µMAX Package
1mV_P-P Output Voltage Ripple and Noise
Power-OK Signal to Control GaAsFET Drain Switch
0.05µA Logic-Controlled Shutdown
1ms Guaranteed Startup
2.5V to 5.5V Input
-0.5V to (-V_IN + 0.6V) Output at up to 4mA
Operates with One 4.7µF and Three 0.22µF Capacitors (no inductors needed)

Part Models: 2
1ku List Price: Starting From $2.63

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX881REUB+	10-MINI_SO-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX881REUB+T	10-MINI_SO-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Product 1
MAX852		Low-Noise, Regulated, Negative Charge Pump Power Supplies for GaAsFET Bias

Evaluation Kits

Evaluation Kit for the MAX881R

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Features and Benefits

1mVp-p Output Voltage Ripple
2.5V to 5.5V Input Range
Uses One 4.7µF and Three 1µF Ceramic Capacitors
-2V Regulated Output (or Adjustable)
4mA Output Current
Power OK (POK-bar) Output
Fully Assembled and Tested Surface-Mount Board

Product Details

The MAX881R IC is an inverting, charge-pump DC-DC converter with a low-noise, regulated output. Low output ripple voltage makes this device ideal for biasing the GaAsFETs commonly found in cellular telephone transmitters.

The MAX881R evaluation kit (EV kit) is a fully assembled and tested surface-mount board. Provisions are made for mounting a second voltage-divider resistor, which is required for setting output voltages other than -2V. A special scope-probe socket is also mounted on the board, so output noise can be observed on an oscilloscope.

Applications

Cell Phones
Mobile Radios
PCS Phones
PHS Phones
Two-Way Paging
Wireless Computers
Wireless Handsets
Wireless Modems

Resources

MAX881REVKIT ODB - Design Files
2.9 M

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