• 315MHz frequency shift keying (FSK) transceiver module with data rates up to 33000bps using Manchester encoded data or 66000bps using non return to zero encoded data

Datasheet Archive:

http://wyjen.com/datasheets/GTR315M_M13A_datasheet.pdf


Key Features

The key features of the transceiver module are:


  • Carrier frequency of 315 Mega Hertz

  • Supports Frequency Shift Keying (FSK)

  • Supports 3.3V or 5V input digital data

  • Supports two modes of operation: power-down and power-up

  • Transmit bit rate up to 66Kbps using NRZ line encoding or 33Kbps using Manchester line encoding

  • Selectable Supply voltage range of 3.3V or 5V

  • Selectable transmit/receive mode

  • Operating temperature range of -40 to 125 degrees

  • Antenna matching input of 50 ohms for TX or RX mode

  • Low power consumption

  • Provides TX/RX data via a 6 pin header with 100 mil spacing between pins and power and ground on separate 6 pin header with same spacing

  • Module dimensions are 1.6 inches wide by 1 inch height

Targeted Applications

Some of the targeted applications of the GTR315M_M13 transceiver are:


  • Remote controlled garage door openers

  • Remote controlled robotics

  • Remote keyless entry systems

  • Remote controlled toys

  • Wireless sensors

  • Wireless computer peripherals

  • Wireless security systems

  • Wireless game consoles

  • Wireless pressure monitoring systems


Ordering Info

Manufacturer/Distributor

Part Number

Online Store

Sales

WyJen Technologies Incorporated

GTR315M-M13A

www.wyjen.com

1-800- 490-4165



Description

A top view of the GTR315M-M13 transceiver module is shown in Figure 1. The GTR315M-M13 transceiver module uses frequency shift keying with data rates up to 33000bps using Manchester encoded data or 66000bps using non return to zero encoded data. The module operates at two popular voltage source levels: 3V or 5V. In particular this module easily targets battery wireless applications using 3.3V. It also operates at the 5 volt supply which is typical for university laboratories. This module can also be used for non-battery applications with low noise sources.


The module integrates a transmitter and receiver section that uses a phase locked loop, low noise amplifier, and power amplifier. The receive section of the GTR315M-M13 module consists of a low noise amplifier with good sensitivity as low as -110dB. The transmit section of the GTR315M-M13 module consists of a power amplifier with a typical output power of 10dBm. Both the transmit and receive sections use a phase locked loop to modulate and demodulate the digital data, respectively. The module also provides a shutdown feature for low power consumption with a typical current of 0.8A.


The GTR315M-M13 module provides a transmit/receive input and bidirectional data which can be easily interfaced to and controlled by a baseband processor or programmable logic device. Other features of the module is that it is robust and rugged and can fit in small areas.




Figure 1. Illustration of GTR315M-M13 transceiver module showing pins. Note: Top view is from component side.



Input/Output Pin Description

The function of each pin for the GTR315M_M13 transceiver module is described in Table 1.


Name

J1 Pin Number

Input/Output

Description

ANTENNA

1

Bidirectional

50 ohm antenna input/output. When TX/RXen is HIGH this pin acts as a 315MHz RF output and when TX/RXen is HIGH this pin acts as an input to an incoming 315MHz RF signal.

GND

2

Input

GROUND.

GND

3

Input

GROUND.

VCC

4

Input

5V power supply. See Table 2 for configuration.

VDD

5

Input

See Table 2 for 3.3V power supply configuration.

AUTOCAL

6

Input

Set to HIGH to auto-calibrate the internal FSK demodulator Phase Locked Loop to adjust to variations in temperature and voltage every minute, otherwise set to zero to calibrate only on power up.



Name

J2 Pin Number

Input/Output

Description

AGC0

1

Input

Automatic gain control 0 (see Table 3)

AGC1

2

Input

Automatic Gain control 1(see Table 3)

NC

3

NC

No Connection

DATA

4

Bidirectional

When in receive mode DATA is an output (receive data), when in transmit mode DATA is an input (transmit data). See pin 6 of J2.

SHUTDOWN

5

Input

Shutdown input. When HIGH the module is in normal operation, when LOW the module is in shutdown mode.

TX/RXen

6

Input

Transmit/receive enable. To put the module in transmit mode set TX/RXen HIGH, to put it in receive mode set TXRXen LOW.




Table 1. Pin description table for the GTR315M-M13 transceiver module.



GTR315M_M13 5V or 3.3V Power Supply Configuration Table

The Table below describes shows to put the module in 5V or 3.3 power supply operation.



VCC Voltage

VDD Voltage

Power Supply Operation

NC

5V

5V operation

3.3V

NC

3.3V operation

Table 2. GTR315M_M13 power supply configuration.




GTR315M_M13 Auto-Calibration of Automatic Gain Control Table

Table 3 shows how to set the automatic gain control operation of the GTR315M_M13 module. The AGC is disabled when AGC0=0 and AGC1=0. The dwell time is used after the AGC has been enabled. The dwell time is the time that that the module waits before adjusting the gain. When the AGC is enabled using any of the three on states in Table 3 the strength of the incoming RF signal is monitored. When the strength is –55dB (strong RF signal) the module waits for a certain amount of time (dwell time) before reducing the gain of low noise amplifier (LNA). When the RF signal strength is -59dB the module waits a certain amount of time (dwell time) before increasing the LNA gain. If after the dwell time the RF signal changes back to the original RF level the LNA gain will remain unchanged.


AGC1

AGC0

Automatic Gain Control Operation

0

0

AGC disabled, High Gain

0

1

Dwell time is 162us

1

0

Dwell time is 1.3ms

1

1

Dwell time is 83ms

Table 3. GTR315M_M13 AGC configuration.


3.3 Volt Application Circuits

Figure 2 and Figure 3 demonstrate how to put the GTR315M_M13A in transmitter and receiver mode respectively system using 3.3V volt operation. Figure 2 shows the transceiver configured as a 3.3V FSK transmitter while Figure 3 shows it configured as 3.3V FSK receiver.





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315MHz frequency shift keying (FSK) transceiver module with data rates up to 33000bps using Manchester encoded data or 66000bps using non return to zero encoded data

  • Brand: WyJen
  • Product Code: GTR315M-M13A
  • Availability: In Stock
  • $10.99


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Tags: 315MHz frequency shift keying (FSK) transceiver module with data rates up to 33000bps using Manchester encoded data or 66000b