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MAX881R - Low-Noise Bias Supply in MAX with Power-OK for GaAsFET PA

Key Features

  • o Small µMAX Package o 1mVp-p Output Voltage Ripple and Noise o Power-OK Signal to Control GaAsFET Drain Switch o 0.05µA Logic-Controlled Shutdown o 1ms Guaranteed Start-Up o 2.5V to 5.5V Input o -0.5V to (-VIN + 0.6V) Output at up to 4mA o Operates with One 4.7µF and Three 0.22µF Capacitors (no inductors needed) MAX881R The MAX881R low-noise, inverting power supply is designed for biasing GaAsFET power amplifiers in portable wireless.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-1372; Rev 1; 6/98 KIT ATION EVALU E L B A AVAIL Low-Noise Bias Supply in µMAX with Power-OK for GaAsFET PA General Description Features o Small µMAX Package o 1mVp-p Output Voltage Ripple and Noise o Power-OK Signal to Control GaAsFET Drain Switch o 0.05µA Logic-Controlled Shutdown o 1ms Guaranteed Start-Up o 2.5V to 5.5V Input o -0.5V to (-VIN + 0.6V) Output at up to 4mA o Operates with One 4.7µF and Three 0.22µF Capacitors (no inductors needed) MAX881R The MAX881R low-noise, inverting power supply is designed for biasing GaAsFET power amplifiers in portable wireless applications. This device is a chargepump inverter followed by a negative linear regulator. The input voltage range is 2.5V to 5.5V. The output is preset at -2.