CYWUSB6935-48LTXC Cypress Semiconductor Corp, CYWUSB6935-48LTXC Datasheet - Page 3

• Manufacturer Part Number: CYWUSB6935-48LTXC
• Description: CYWUSB6935-48LTXC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYWUSB6935-48LTXC

• Frequency: 2.4GHz
• Data Rate - Maximum: 62.5kbps
• Modulation Or Protocol: DSSS, GFSK
• Applications: AMR, ISM, RKE
• Power - Output: 0dBm
• Sensitivity: -95dBm
• Voltage - Supply: 2.7 V ~ 3.6 V
• Current - Receiving: 57.7mA
• Current - Transmitting: 69.1mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 7mm
• Product Length (mm): 7mm
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (typ): 3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant

Applications
■
■
■
■
■
Applications Support
The CYWUSB6935 is supported by both the CY3632
WirelessUSB Development Kit and the CY3635 WirelessUSB
N:1 Development Kit. The CY3635 development kit provides all
of the materials and documents needed to cut the cord on multi-
point to point and point-to-point low bandwidth, high node density
applications including four small form-factor sensor boards and
a hub board that connects to WirelessUSB LR RF module
boards, a software application that graphically demonstrates the
multipoint to point protocol, comprehensive WirelessUSB
protocol code examples and all of the associated schematics,
gerber files and bill of materials. The WirelessUSB N:1 Devel-
opment Kit is also supported by the WirelessUSB Listener Tool.
Functional Overview
The CYWUSB6935 provides a complete SPI-to-antenna radio
modem. The CYWUSB6935 is designed to implement wireless
devices operating in the worldwide 2.4-GHz Industrial, Scientific,
and Medical (ISM) frequency band (2.400 GHz–2.4835 GHz). It
is intended for systems compliant with world-wide regulations
covered by ETSI EN 301 489-1 V1.4.1, ETSI EN 300 328-1
V1.3.1 (European Countries); FCC CFR 47 Part 15 (USA and
Industry Canada) and ARIB STD-T66 (Japan).
The CYWUSB6935 contains a 2.4-GHz radio transceiver, a
GFSK modem, and a dual DSSS reconfigurable baseband. The
radio and baseband are both code- and frequency-agile.
Forty-nine spreading codes selected for optimal performance
(Gold codes) are supported across 78 1-MHz channels yielding
a theoretical spectral capacity of 3822 channels. The
CYWUSB6935 supports a range of up to 50 meters or more.
Document Number : 38-16008 Rev. *G
Building/Home Automation
❐
❐
❐
❐
❐
Industrial Control
❐
❐
❐
Automatic Meter Reading (AMR)
Transportation
❐
❐
Consumer / PC
❐
❐
❐
❐
Climate Control
Lighting Control
Smart Appliances
On-Site Paging Systems
Alarm and Security
Inventory Management
Factory Automation
Data Acquisition
Diagnostics
Remote Keyless Entry
Locator Alarms
Presenter Tools
Remote Controls
Toys
2.4 GHz Radio
The receiver and transmitter are a single-conversion, low-Inter-
mediate Frequency (low-IF) architecture with fully integrated IF
channel matched filters to achieve high performance in the
presence of interference. An integrated Power Amplifier (PA)
provides an output power control range of 30 dB in seven steps.
Table 1. Internal PA Output Power Step Table
Both the receiver and transmitter integrated Voltage Controlled
Oscillator (VCO) and synthesizer have the agility to cover the
complete 2.4-GHz GFSK radio transmitter ISM band. The
synthesizer provides the frequency-hopping local oscillator for
the transmitter and receiver. The VCO loop filter is also
integrated on-chip.
GFSK Modem
The transmitter uses a DSP-based vector modulator to convert
the 1-MHz chips to an accurate GFSK carrier.
The receiver uses a fully integrated Frequency Modulator (FM)
detector with automatic data slicer to demodulate the GFSK
signal.
Dual DSSS Baseband
Data is converted to DSSS chips by a digital spreader.
De-spreading is performed by an oversampled correlator. The
DSSS baseband cancels spurious noise and assembles
properly correlated data bytes.
The DSSS baseband has three operating modes: 64-chips/bit
Single Channel, 32-chips/bit Single Channel, and 32-chips/bit
Single Channel Dual Data Rate (DDR).
64 Chips/Bit Single Channel
The baseband supports a single data stream operating at 15.625
kbits/sec. The advantage of selecting this mode is its ability to
tolerate a noisy environment. This is because the 15.625
kbits/sec data stream utilizes the longest PN Code resulting in
the highest probability for recovering packets over the air. This
mode can also be selected for systems requiring data transmis-
sions over longer ranges.
32 Chips/Bit Single Channel
The baseband supports a single data stream operating at 31.25
kbits/sec.
32 Chips/Bit Single Channel Dual Data Rate (DDR)
The baseband spreads bits in pairs and supports a single data
stream operating at 62.5 kbits/sec.
PA Setting
7
6
5
4
3
2
1
0
Typical Output Power (dBm)
CYWUSB6935
–16.4
–20.8
–24.8
–29.0
–2.4
–5.6
–9.7
0
Page 3 of 36
[+] Feedback