STD-5030 pages
DSSS low power radio transceiver
STD-503 2.4GHz
Preliminary
The STD-503 is a 2.4 GHz transceiver enclosed in a small compact shield casing designed for industrial applications.
The transceiver uses Direct Sequence Spread Spectrum (DSSS) modulation and true diversity circuit, enabling reliable communications even
in the congested 2.4 GHz band.
The STD-503 complies with the European EN300 440, U.S FCC Part 15.247 and Japanese ARIB STD-T66 standard, making it ready for the
global market.
Low power consumption and battery operation give the STD-503 the performance demanded for applications where long range and
reliability are required.
The transceiver uses a transparent data interface to enable users to communicate using their own protocols.
The module s configuration can be set easily via the UART interface using dedicated commands.
*Circuit Design developed an onboard ASIC containing SS correlator (a key part of spread spectrum communication).
This ensures long term supply for industrial applications.
Features
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CE, FCC and ARIB conformity certification
Uses direct sequence spread spectrum (DSSS) modulation
Channel stepping option controlled via CHC pin
A true diversity receiver (two built-in receiver circuits)
Module settings using dedicated commands
Data communication uses a transparent interface
Low power operation
77 channels
Range 300m LOS
Onboard temperature sensor
Application
・ Industrial telecontrol
・ Telemetry Systems
Specification
Specification
Frequency range
2402.5 ~ 2478.5 MHz
Number of RF channels
77
Channel spacing
1 MHz
RF chip rate
288kcps
Modulation System
FSK
Supply voltage
3.3 ~ 5.5 V
Supply current
TX:65mA RX:65mA
RF output power
10mW
Receiver sensitivity
-93 dBm
Operating temp. range
-20 ~ +65C (storage -30 ~ +80C)
No dew condensation
Dimension
40 x 29 x 5 mm
Power/signal pin connectors excluded
Weight
10g
RF connectors
Interface
Parameter
MHF x 2
Remark
EIRP
Parameter
Specification
Remark
Data Interface (DI/DO)
19.2 kbps
Sync: CLK terminal
Command Interface (TXD / RXD)
UART communication (RS-232C)
- Communication method
Asynchronous
- UART bit rate
19200, 38400, 57600 bps
- Flow Control
None
- Other parameters
Data Length: 8 bits, Parity (None),Stop Bits 2
www.circuitdesign.jp
STD-503 ver1.0e Sep. 2014
Sales Division
7557-1 Hotaka, Azumino, Nagano 399-8303, Japan
Tel:+81-(0)263-82-1024
Fax:+81-(0)263-82-1016