12.3 AC-RX2/CS User Manual AC-RX2/CS Receiver RF data receiver super-reactive ASK modulation, low cost and low consumption ideal for Microchip HCS KEELOQ decoder/encoder family. Pin-out 3 38.1 Component Side 1 2 3 7 11 13 14 15 7 15 1 0.25 0.5 2.54 Connections Pin 2-7-11 Ground GND Connections: Internally connected to a single ground plate Pin 3 Antenna 50 impedence antenna connection Pin 1-15 +V Connection to the +5V 0.5V supply positive pole Pin 13 Test Point Analog output of the demodulated signal. By connecting an oscillograph the entity and quality of the received RF signal can be seen. Pin 14 Data Out Receiver digital output. Apply loads over 10 K Technical features Min Tipico Max Unit Annotazioni Working centre frequency 433.92 MHz Voltage supply 4.5 5 5.5 V Absorbed current 3 mA RF sensitivity -106 dBm Vedi nota 1 -3 dB RF bandwidth 2 MHz Square wave output 3 KHz Output low voltage Gnd+0.4 V Vedi nota 4 Output high voltage V 0.4 V Vedi nota 4 S RF spurious emissions in antenna -65 dBm Vedi nota 2 Switch-on time 2 s Vedi nota 3 Operating temperature range -20 +80 C Dimension 38.1 x 12.3 x 3 mm Nota1: Values have been obtained by applying the test system as per Fig. 1. Nota2: The RF emission measure has been obtained by connecting the spectrum analyser directly to RX Pin 3. Nota3: By switch-on time is meant the time required by the receiver to acquire the declared characteristics from the very moment the power supply is applied. Nota4: Values obtained with 10K maximum load applied. Le caratteristiche tecniche possono subire variazioni senza preavviso. La AUREL S.p.A non si assume la responsabilit di danni causati dalluso improprio del dispositivo. AUREL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) ITALY Rev. A, 2-02-2010 Tel.: +390546941124 Fax: +390546941660 Pag 1 di 4 AC-RX2/CS User Manual The declared technical features have been verified by applying the following test system: Fig. 1 Device usage In order to take advantage of the performances described in the technical specifications and to comply with the operating conditions which characterize the Certification, the receiver has to be fitted on a printed circuit, considering what follows: 5V Supply voltage 1. The receiver must be supplied by a very low voltage source, safety protected against short circuits. 2. Maximum voltage variations allowed: 0.5 V. 3. De-coupling, next to the receiver, by means of a minimum 100.000 pF. ceramic capacitor. Ground 1. It must surround at the best the welded area of the receiver. The circuit must be double layer, with throughout vias to the ground planes, approximately each 15 mm. 2. It must be properly dimensioned, specially in the antenna connection area, in case a radiating whip antenna is fitted in it (an area of approximately 50 mm radius is suggested.) Fig.2 Suggested lay-out for the device correct usage Le caratteristiche tecniche possono subire variazioni senza preavviso. La AUREL S.p.A non si assume la responsabilit di danni causati dalluso improprio del dispositivo. AUREL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) ITALY Rev. A, 2-02-2010 Tel.: +390546941124 Fax: +390546941660 Pag 2 di 4