EV9900 Datasheet, PDF (4/27 Pages) CML Microcircuits – Evaluation Kit

Evaluation Kit for CMX990
EV9900
2. Preliminary Information
The EV9900 provides a platform for the evaluation of the CMX990. To use the EV9900, a
separate micro-controller or PC, for example, is required to program the CMX990 via its parallel
interface. This controlling device is not included on the EV9900 but two CML products are
available to provide the controlling functionality: the DE9901 or the EV9902.
2.1 Laboratory Equipment
The following laboratory equipment is needed to use this evaluation kit:
• Dual Power Supply
• Spectrum Analyzer
• RF Attenuator
• RF Signal Generator
For more detailed design or investigation work the customer may require other RF test
equipment.
2.1.1 Power Supply
The supply input voltage to the PCB, for all circuits except the PA, is 7.2V (5.25V to 8V
acceptable). On board regulators are provided to generate all voltage rails used on the PCB (3V
and 5V rails are used).
The supply to the PA is directly connected to the PA: a voltage of 3.5V is recommended.
The 7.2V supply should be rated at 1A and the 3.5V supply rated at 2A.
NOTE: Care should be exercised with the supplies as they are not protected for reverse
polarity. For optimum RF performance, the PA supply is connected directly to the RF2173
device so care is required to ensure the RF2173 manufacturer's ratings are not exceeded.
2.2 Handling Precautions
Like most evaluation kits, this product is designed for use in office and laboratory environments.
The following practices will help ensure its proper operation.
2.2.1 Static Protection
This product uses low power CMOS circuits that can be damaged by electrostatic discharge.
Partially damaged circuits can function erroneously, leading to misleading results. Observe ESD
precautions at all times when handling this product.
2.2.2 Contents - Unpacking
Please ensure that you have received all of the items on the separate information sheet (EK9900)
and notify CML within 7 working days if the delivery is incomplete.
2.3 Approvals
This product is not approved to any EMC or other regulatory standard. Users are advised
to observe local statutory requirements, which may apply to this product and the radio
frequency signals that may emanate from it.
© 2005 CML Microsystems Plc
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UM9900/1