Q2686H WAVECOM, Q2686H Datasheet - Page 79

• Manufacturer Part Number: Q2686H
• Description: MODULE, GSM/GPRS, QUAD BAND
• Manufacturer: WAVECOM

Specifications of Q2686H

• Mcu Supported Families: ARM9
• Kit Features: GSM/GPRS Class 10 Quad Band Version, 32MB Of Bursted Flash Memory, 8MB Of SRAM
• Tool / Board Applications: Wireless Communication
• Development Tool Type: CPU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
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Q2686 Wireless CPU
Design Guidelines
March 6, 2007
Page: 78 / 87
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