MAX840 - Low-Noise / Regulated / -2V GaAsFET Bias

Product Overview

Maxim

Part number	MAX840
Manufacturer	Maxim
File Size	161.02 KB
Description	Low-Noise / Regulated / -2V GaAsFET Bias
Datasheet	MAX840 Datasheet
Additional preview pages of the MAX840 datasheet.

The MAX840/MAX843/MAX844 low-noise, inverting charge-pump power supplies are ideal for biasing GaAsFETs in cellular telephone transmitter amplifiers.

o Fixed -2V or Adjustable -0.5V to -9.4V Output at 4mA (MAX840) o 2.5V to 10V Input Voltage Range o Operate with Small Capacitors (as low as 0.22µF) o 1mVp-p Output Voltage Ripple o Charge-Pump Switching Frequency: 100kHz in Normal Operation 20kHz in Shutdown Mode (MAX844) o 1µA Max Logic-Level Shutdown Over Temp. (MAX840/MAX843) o Small 8-Pin SO Package MAX840/MAX843/MAX844 ______________Ordering Information PART MAX840C/D MAX840ISA MAX840ESA MAX843C/D MAX843ISA MAX843ESA MAX844C/D MAX844ISA.

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Published: May 2, 2005 |