EVM-915-DTS-BZS Linx Technologies, EVM-915-DTS-BZS Datasheet - Page 11

• Manufacturer Part Number: EVM-915-DTS-BZS
• Description: RF Development Tools 915 MHz Wireless Module DTS Brazil
• Manufacturer: Linx Technologies
• Type: Wi-Fir

Specifications of EVM-915-DTS-BZS

• Rohs: yes
• Product: Evaluation Modules
• Tool Is For Evaluation Of: Wi.232DTSB-R
• Frequency: 915 MHz
• Operating Supply Voltage: 3 V to 3.6 V
• Interface Type: UART
• Factory Pack Quantity: 1

Figure 14: DTS Series Module Suggested Footprint
Example Circuit
Figure 15: Evaluation Module Circuit
Preliminary Draft
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Power Supply
General
Although the DTS Series module is very easy to use, care must be given to
the design of the power supply circuit. It is important for the power
supply to be free of digital noise generated by other parts of the application
circuit, such as the RS-232 converter.
Figure 14 (Suggested Footprint) shows the schematic for our evaluation
module circuit for the DTS Series module. It includes an on-board power
supply and antenna connector. This evaluation circuit was used to measure
the performance of the module, and should be used as a
reference for DTS Series based designs. If noise is a problem, it can
usually be eliminated by using a dedicated LDO regulator for the module
and/or by separating the module grounds and those of the other circuits.
Rise Time
Additionally, power supply rise time is extremely important. The power
supply presented to the module must rise from Vss to 2.7V in less than
1ms. If this specification cannot be met, an external reset supervisor circuit
must be used to hold the module in reset until the power supply stabilizes.
Failure to ensure adequate power supply rise time can result in loss of
important module configuration information. See the section on Hardware
Reset for more information.
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Preliminary Draft