Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233 05 October 2009 TX2H-4xx-64 UUHHF HF Hiigh Pgh Poower FM wer FM TransmitterTransmitter UUHHF HF Hiigh Pgh Poower FM wer FM TransmitterTransmitter The TX2H is a 433/434MHz single-channel FM transmitter module with a power output of 25mW nominal. It is a 100% pin-compatible drop-in replacement for the Radiometrix TX2 and can be used to replace the TX2 in applications where greater radiated power is desired (for example when space limitations dictate the use of small and inefficient antennas, or in countries where the extra power is permitted). The module will handle raw data rates up to 64kb/s. The TX2H transmitter can be used with either RX2G or RX2A receivers. Figure 1: TX2H-433-64-5V & RX2A-433-64 Features Standard frequencies: 433.92MHz and 434.42MHz Hi power drop in replacement for TX2 Data rates up to 64kbps Usable range over 500m Fully screened Low power requirements Conforms to European EN 301 489-3 and ETSI EN 300 220-3 (for ERP 10mW) Conforms to Australian/New Zealand AS/NZS 4268:2003 Instead of the SAW-based technology of the TX2, the TX2H uses a PLL circuit locked to a crystal for better frequency stability over a wider temperature range (-40C to +85C), at the expense of slightly slower power-up. The TX2H is available as standard on frequencies of 433.92MHz and 434.42MHz at 25mW power output, in either 3V(3.3V) or 5V versions. Custom frequencies may be available to order (consult factory). The module is designed to meet all applicable EMC and type approval requirements. The module can be made available if required in an extra-high-power version (TX2EH), in the same footprint and pinout but giving 90-100mW nominal output power at 5V supply with a current consumption of less than 45mA (DC to RF conversion efficiency better than 45%). Applications Handheld terminals Data loggers Industrial telemetry and telecommand In-building environmental monitoring and control High-end security and fire alarms Vehicle data up / download Technical Summary Size: 32 x 12 x 5.5mm Operating frequency: 433.92MHz and 434.42MHz Supply : 3V or 5V regulated Current consumption: 25mA typical Data bit rate: 64kbps max. Transmit power: +14dBm (25mW) nominal Evaluation platforms: Universal Evaluation Kit, NBEK + SIL carrier board sales radiometrix.com TX2H Data Page - 1 - NEWFunctional description The TX2H transmitter module is a crystal based PLL controlled FM transmitter operating on either 3V or 5Vsupply and is available in 433.92MHz. R1 3 3V / 5V 868/915 MHz R2 band pass ref 35kHz 64 amp buffer filter 2 osc LPF 5 V C O RF out TXD Loop Filter 1 4 RF GND 0V Figure. 2: TX2H block diagram User interface 5.5 mm 32 mm Radiometrix 12.0 mm 12.5 mm TX2H UHF Transmitter pin spacing: PCB level 2.54 mm 20.32 mm 1 2 345 1 = RF gnd 2 = RF out 3 = Vcc 5 holes of 0.7 mm dia. 4 = 0V pin spacing 2.54 mm 5 = TXD Figure 3: TX2H pin-out and dimension TX2H pin Name Function 1 RFgnd RF ground, internally connected to the module screen and pin 4 (0V). This pin should be directly connected to the RF return path - e.g. coax braid, main PCB ground plane etc. 2 RF out 50 RF output to antenna. Internally DC-isolated. 3 VCC +ve supply pin. The module will generate RF when the Vcc supply is present. Max ripple content 0.1Vp-p. A 100nF de-coupling ceramic capacitor is suggested. 4 0V DC supply ground. Internally connected to pin 1 and module screen. 5 TXD This DC coupled modulation input will accept either serial digital data ( 0 V to Vcc levels) or high level linear signals. Input impedance is 100 k sales radiometrix.com TX2H Data Page - 2 -