Q2686 Wavecom, Q2686 Datasheet - Page 79

• Manufacturer Part Number: Q2686
• Description: Wireless CPU
• Manufacturer: Wavecom

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6.1.2 Power Supply
The power supply is one of the key issues in the design of a GSM terminal.
A weak power supply design could, in particular, affect:
WARNING:
Careful attention should be paid to:
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This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WM_PRJ_Q2686_PTS_001-007
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The quality of the power supply: low ripple, PFM or PSM systems should
be avoided (PWM converter preferred).
Capacity to deliver high current peaks in a short time (pulsed radio
emission).
EMC performance
The emission spectrum
The phase error and frequency error
confidential ©
Q2686 Wireless CPU
Design Guidelines
March 6, 2007
Page: 78 / 87
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