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 0.8mA.

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.

KEY FEATURES

APPLICATIONS

The key features of the GTR315M_M13A transceiver module are

• Carrier frequency of 315 Mega Hertz
• Supports Frequency Shift Keying (FSK)
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

Some of the targeted applications of the GTR315M_M13A transceiver module 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

Part Numbers

Carrier Freq (MHz)

 Modulation Type

Antenna Matching Input (ohms)

Receiver Sensitivity (dB)

Supply

Voltage (V)

Supply Current (mA)

Dimensions (inches x inches)

Package

 GTR315M_M13A

 315MHz

 FSK

 50

 -110

 3.3/5

 11.6 (TX), 6.4 (RX)

 1.6x1.0 

 DIP

LINKS TO MORE INFORMATION

Complete Data Sheet: (PDF): Download

Price and Availability 

RELATED PRODUCTS

Typical Application Circuits

5 Volt Application Circuits

Figure 1 and Figure 2 demonstrate how to put the GTR315M_M13A in transmitter and receiver mode respectively system using 5 volt operation.  Figure 1 shows the transceiver configured as a 5V FSK transmitter while Figure 2 shows it configured as 5V FSK receiver.

Figure 1.  .  Detailed circuit illustrating how the GTR315M_M13 transceiver module can be configured as a 5V FSK transmitter.  As a test circuit connect the data input to a square wave generator with a 1000KHz square wave.  Offset the square wave by 2.5V for the best bit rate.  Use the corresponding receiver configuration in Figure 2 to verify that the data is received correctly.  Note: Top view as shown is from component side of transceiver.

Figure 2.  .  Detailed circuit illustrating how the GTR315M_M13 transceiver module can be configured as a 5V FSK receiver.  Note: Top view as shown is from component side of transceiver.

3.3 Volt Application Circuits

Figure 3 and Figure 4 demonstrate how to put the GTR315M_M13A in transmitter and receiver mode respectively system using 3.3V volt operation.  Figure 3 shows the transceiver configured as a 3.3V FSK transmitter while Figure 4 shows it configured as 3.3V FSK receiver.

Figure 3.  Detailed circuit illustrating how the GTR315M_M13 transceiver module can be configured as a 3.3V FSK transmitter.  Offset the square wave by 1.65V for the best bit rate.  As a test circuit connect the data input to a square wave generator with a 1000KHz square wave.  Use the corresponding receiver configuration in Figure 4 to verify that the data is received correctly.  Note: Top view as shown is from component side of transceiver.

Figure 4.  .  Detailed circuit illustrating how the GTR315M_M13 transceiver module can be configured as a 3.3V FSK receiver.  Note: Top view as shown is from component side of transceiver.