STD-302S: 434 MHz0 pages

UHF Narrow Band Multi Channel Transceiver

STD-302S

434MHz

The UHF FM narrow band semi-duplex radio module STD-302S 434MHz is suitable for industrial remote control application and telemetry
application operated in 434MHz ISM band. SAW filter and narrow band technique provides reliable data communication in industrial
applications where interference rejection and practical distance range is required. Suitable for feedback systems.

Features
・
・
・
・
・
・

10mW RF power, 3.0V
Programmable RF channel
Receiver sensitivity -119dBm
Excellent vibration and shock resistance / Mechanical durability
FM narrow band
429 MHz also available

Applications
・ Industrial remote control system
・ Telemetry system
・ Data transmission

General

Parameter

Specification

Communication form

Half duplex

Frequency

433.050 to 434.775 MHz

Channel step

25 kHz Channel Programmable (PLL IC; Fujitsu)

Frequency stability

+/- 4ppm (-20 to +60 degree C)

Data rate

21.25 MHz

PLL response

30ms typ. (from PLL setting to LD out)

Modulation

FSK

Supply voltage

3.0 to 5.5 V

Supply current

44mA (TX) 26mA (RX)

Operating temp. range

-20 to + 60 degree C (Storage : -30 to + 75 degree C)

TX/RX switching time

15 ms typ. (DI vs valid DO at the same frequency)

Dimension

30 X 50 X 9 mm

Weight

Transmitter
part

9600 bps max (pulse width min. 100us, max 15ms)

PLL reference frequency

25g

Specification

Transmitter type

PLL synthesizer

RF output power

10 mW at 50 ohm

Deviation

+/- 2.75 kHz (PN9, 9600bps)

DI input level

L = GND, H = 3 V to Vcc

Residual FM noise

0.17 kHz

Spurious emission

- 54 dBm (47M-74M, 87.5M-118M, 174M-230M, 470M-862 MHz)

Adjacent CH power

Receiver part

Parameter

- 37 dBm (CH 25kHz, BW = 16kHz, PN9, 9600bps)

Parameter

Specification

Receiver type

Double superheterodyne

IF

21.7 MHz (1st), 450 kHz (2nd)

Maximum input level

10 dBm

Receiver sensitivity

- 119 dBm (12 dB SINAD)
- 116 dBm (BER 1%)
- 110 dBm (0 error / 2556 bits)

Spurious response rejection

80 dB ( 1st Mix), 60 dB (2nd Mix)

Adjacent channel selectivity

50 dB ( +/- 25 kHz)

Intermodulation

50 dB (f - 200 kHz + f - 100 kHz)

Spurious radiation

- 57 dBm (below 1000 MHz)
- 47 dBm (above 1000 MHz)

DO output level

L = GND, H = 2.8 V

www.circuitdesign.jp
STD-302S 434MHz ver1.1

Aug. 2015

Specifications are subject to change without prior notice

Sales Division

7557-1 Hotaka, Azumino, Nagano 399-8303, Japan
Tel:+81-(0)263-82-1024
Fax:+81-(0)263-82-1016