User's Manual
Table Of Contents
- 1. General Specification
- 2. Module Identification
- 3. Module Connection
- 4. Applications
- 5. Electrical Specifications
- 5-1. Absolute Maximum Ratings
- 5-2. Recommended operating Range
- 5-3. Electrical Characteristics – DC
- 5-4. Electrical Characteristics – RF TX
- 5-5. Electrical Characteristics – RF RX
- 5-6. Electrical Characteristics – RF PLL
- 5-7. Electrical Characteristics – Audio C/CS
- 5-8. I2S Communication Interface Timing
- 5-9. I2C Slave Communication Interface Timing
- 6. Certificate Statement
USER MANUAL
WSA520S
Wireless Audio Transceiver, 5GHz 30.0x40.4x3.2[mm], 24pin FFC Version: 01
15 /17 OCT 29, 2020
2.5 Trace antenna designs
For a modular transmitter with trace antenna designs, see the guidance in Question 11 of KDB Publication 996369
D02 FAQ – Modules for Micro-Strip Antennas and traces. The integration information shall include for the TCB
review the integration instructions for the following aspects:
layout of trace design, parts list (BOM), antenna, connectors, and isolation requirements.
a) Information that includes permitted variances (e.g., trace boundary limits, thickness, length, width, shape(s),
dielectric constant, and impedance as applicable for each type of antenna);
b) Each design shall be considered a different type (e.g., antenna length in multiple(s) of frequency,
the wavelength, and antenna shape (traces in phase) can affect antenna gain and must be considered);
c) The parameters shall be provided in a manner permitting host manufacturers to design the printed circuit (PC)
board layout;
d) Appropriate parts by manufacturer and specifications;
e) Test procedures for design verification; and
f) Production test procedures for ensuring compliance.
The module grantee shall provide a notice that any deviation(s) from the defined parameters of the antenna trace,
as described by the instructions, require that the host product manufacturer must notify the module grantee that
they wish to change the antenna trace design. In this case, a Class II permissive change application is required to
be filed by the grantee, or the host manufacturer can take responsibility through the change in FCC ID (new
application) procedure followed by a Class II permissive change application.
Explanation: Yes, The module with trace antenna designs, and This manual has been shown the layout
of trace design, antenna, connectors, and isolation requirements.
2.6 RF exposure considerations
It is essential for module grantees to clearly and explicitly state the RF exposure conditions that permit a host
product manufacturer to use the module. Two types of instructions are required for RF exposure information: (1)
to the host product manufacturer, to define the application conditions (mobile, portable – xx cm from a person’
s body); and (2) additional text needed for the host product manufacturer to provide to end users in their end-
product manuals. If RF exposure statements and use conditions are not provided, then the host product
manufacturer is required to take responsibility of the module through a change in FCC ID (new application).
Explanation: This module complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment, This equipment should be installed and operated with a minimum distance of 20 centimeters
between the radiator and your body." This module is designed to comply with the FCC
statement, FCC ID is: A3LWSA520S.