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Wireless Communciations
Introduction to Wireless
Wireless Solutions
Literature
Wireless Terms
Digital Signal Processors
Paging and Messaging
Base Stations
Handsets
Digital Baseband
Analog Baseband
Radio Frequency
Power Management
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Power Management
For more information on these devices, please see our Literature section.
Integrated Power Management Solutions
TPS9111:Single-chip cellphone baseband power supply
TPS9104:Integrated power supply and audio for wireless systems
TPS9103:Power supply for GaAs power amplifiers
High Performance LDO's
- Interfaces the battery with other components
- Allows the phone to operate from less battery current; extends
battery life
- Very low drop out voltage & current consumption
- TPS71XX: First generation
- TPS72XX: Smaller, lower cost version
- TPS73XX: On-chip micro-processor reset
Switches
- Several P-Channel MOSFETs to suit the desired cost/performance
tradeoff
Supply Voltage Supervisor
- TLC7705
- Monitors voltage going into the microcontroller.
- Resets the micro upon power-on, and after voltage drops below
minimum levels.
- Delay time is adjustable.
- Low power CMOS process - much better for wireless than bipolars.
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