R5-434-5-50B

FM Radio Transmitter & Receiver Modules T5 / R5 Features • • • • • • Miniature SIL package Fully shielded Data rates up to 128kbits/sec Range up to 300 metres Single supply voltage Industry pin compatible T5-434 • Temp range • • • -20°C to +55°C No adjustable components High shock resistance Temperature compensated RF output R5-434 • High sensitivity • Analogue / Digital Outputs • Signal strength output (RSSI) • On board AGC • Single conversion FM Super-Het • Double RF filtering (inc saw front end) Applications • Vehicle alarm systems • Remote gate controls • Garage door openers • Domestic and commercial security General Description The T5 and R5 data link modules are miniature UHF radio modules, which enable the implementation of a simple telemetry link upto 300 metres, and at data rates of up to 128Kbit/s The T5 and R5 modules will suit one-to-one and multi-node wireless links in applications including building and car security, remote industrial process monitoring and computer networking. The ‘B’ derivative parts offer a cost reduced version. The receiver is based on the classical superhet single conversion architecture utilising a PLL xtal referenced oscillator which yields a highly stable IF frequency (10.7 MHz). This hence allows use of high Q bandpass filters offering excellent adjacent channel rejection and hence high interference Immunity. Because of its small size and low power requirements, these modules are ideal for use in portable battery powered wireless applications. DS305-8 Nov ‘05 ©2005 REG No 277 4001, England. Page 1 FM Radio Transmitter & Receiver Modules Connection Diagram T5 / R5 T5 R5 1 2 3 4 5 12 34567 Figure 1: Transmitter Figure 2: Receiver Pin Descriptions: RF GND (pin 1) RF ground pin, internally connected to pin 4 (0V). This pin should ideally be connected to the nearest ground plane (e.g. coax braid, main PCB ground plane etc.) RF OUT (pin2) 50Ω RF antenna output. To achieve best results the antenna impedance must match that of the module. VCC (pin 3) +Ve supply pin (3.0 to 9.0 volts). The module will generate RF when VCC is present. It is strongly recommended that a 100nF capacitor decouples the supply rail as close as possible to this pin. GND (pin 4) Supply and data ground connection, connected to pin 1. Data IN (pin 5) This input has an impedance of 47KΩ and should ideally be driven by a CMOS logic drive or compatible. The drive circuitry should be supplied with the same supply voltage as the Tx module. Ordering Information: RF IN (pin 1) 50Ω RF input from antenna, connect using shortest possible route. This input is isolated from the internal circuit using the air gap of the front end SAW RF filter RF GND (pin 2) RF ground connection, preferable connected to a solid plane. RSSI (pin 3) The Received Signal Strength Indicator provides a DC output voltage proportional to the RF input signal. The amplitude of the RSSI voltage increases with increasing RF signal strength. GND (pin 4) Connect to power supply ground. VCC (pin 5) +Ve supply pin. Operation from a 5V supply able to source6mA at less than Vp-p ripple. AF (pin 6) Audio frequency output. DATA OUT (pin 7) CMOS compatible output. This may be used to drive external decoders. To reduce any noise on this output ass a Add a 56pF cap from this pin to GND. Part No R5-434-5-20 R5-434-5-20B R5-434-5-50 R5-434-5-50B R5-434-5-128 Description Rx 433.92MHz 20Kbps Rx 433.92MHz 20Kbps ‘B part’ Rx 433.92MHz 5V 50Kbps Rx 433.92MHz 5V 50Kbps ‘B part’ Rx 433.92MHz 5V 128Kbps Part No T5-434-9-20 T5-434-5V T5-434-5-20B T5-434-3V T5-434-3-20B Description Tx 433.92MHz 9v 20Kbps Tx 433.92MHz 5v 128Kbps Tx 433.92MHz 5v 20Kbps ‘B part’ Tx 433.92MHz 3v 50Kbps Tx 433.92MHz 3v 20Kbps ‘B part’ DS305-8 Nov ‘05 ©2005 REG No 277 4001, England. Page 2 FM Radio Transmitter & Receiver Modules T5 / R5 Absolute Maximum Ratings: Transmitter T5 Operating temperature: Storage temperature: Supply Voltage (pin 3) Data input (pin 5) RF Out (pin 2) -20°C to +55°C -40°C to +100°C 10V 10V ±50V @ < 10MHz , +20dBm @ > 10MHz Electrical Characteristics: Transmitter T5 Please note that the ‘B’ devices are supplied without can shield. pin DC LEVELS Supply voltage 3V Versions Supply voltage 5V Versions Current & RF POWER Standard T5 Devices Supply current @ VCC = 5V RF power T5’B’ Devices Supply current @ VCC = 3V Supply current @ VCC = 5V RF power @ VCC = 3V RF power @ VCC = 5V RF & Data 2nd harmonic Harmonics @ > 1GHz Initial frequency accuracy Overall frequency accuracy Modulation bandwidth @ -3dB Modulation distortion (THD) Power up time to full RF Standard T5 Devices Data rate Standard Data pulse width T5’B’ Devices Data rate Standard Data pulse width 3 3 Min. 2 4.5 typ. 3.0 5.0 Max. 4 5.5 units Volts Volts notes 3 2 3 3 2 2 4 5.5 3 7 9 6 8 12 +12 8 9.5 +7 +10 mA dBm mA mA dBm dBm dBc dBc KHz KHz KHz % ms 1 1 1 1 1 1 1 1 -50 -46 ±50 ±75 10 1 128,000 40 bits/s µs bits/s µs 20,000 500 Notes 1. Measured into a 50Ω impedance 2. The limit for European spec EN300-220 is –36dBm DS305-8 Nov ‘05 ©2005 REG No 277 4001, England. Page 3 FM Radio Transmitter & Receiver Modules Absolute Maximum Ratings: Receiver R5 Operating temperature: Storage temperature: Supply Voltage (pin 5) RF Input (pin 1) -10°C to +55°C -40°C to +100°C 7V +20dBm T5 / R5 Electrical Characteristics: Standard Receiver R5 min. DC LEVELS Supply voltage Supply current Supply ripple Data output high Data output low RF RF sensitivity IF Bandwidth Initial signal accuracy Max. RF input E.M.C Spurious responses upto 1GHz LO leakage, conducted LO leakage, radiated Image Rejection Dynamic Timings Power up to stable data (With RF signal present) 30 5 5 35 7 7 2.5 1 1 1 50 20 7 6000 700 300 mS mS mS mS mS mS mS uS US uS 20Kbps Part 50Kbps Part 128Kbps Part 20Kbps Part 50Kbps Part 128Kbps Part All Versions 20Kbps Part 50Kbps Part 128Kbps Part 4.5 typ. 5.0 6 =>4.0