TX-AUDIO-2.4 Datasheet and User Manual for TX-AUDIO
Contents
1. P N 650201004G Application information When you design the transmitter module in wireless speakers and headphones pay attention to the following considerations Do not bend down or up the antenna Do not let any metal objects too close to antenna Transmitter module must be kept away from speaker over 3 cm to avoid magnetic interference Power supply to transmitter module must be independent different from the power of amplifier Avoid to put any cable or circuit nearby antenna 1 2 cm ee Antenna area marked by diagonal lines PCB main board Le caratteristiche tecniche possono subire variazioni senza preavviso La AUREL S p A non si assume la responsabilit di danni causati dall uso improprio del dispositivo Technical features are subject to change without notice AUREL S p A does not assume responsibilities for any damages caused by the device s misuse AUREL S p A Via Foro dei Tigli 4 47015 Modigliana FC ITALY 12 05 2008 Tel 39 0546 941124 Fax 39 0546 941660 Pag 3di32. SWO not connected SW 1 sw WL i hannel control SW2 l Ma SW PB C3 100uF 3 6 SVDC IN AUDIO_L INPUT luF AUDIO_R INPUF luF 1 C1 and C2 are both DC blocking capacitors for audio R and L inputs respectively 1 uF capacitors for C1 and C2 will be sufficient for general applications because the input impedance of the A D converter is greater than 10K ohm If further audio low frequency response is wanted C1 and C2 can be increased to get more extension 2 C3 is the DC power supply decoupling capacitor In general a 100 uF capacitor can work well 3 Momentary push button switch at SW pin is used to select the channel 4 At USER_BIT pin serialized data steam max 5Kbps can be delivered to corresponding USER_BIT pin at Receiver s with no interference on digitalized audio Data examples a remote control encoded command b title of musical composition being transmitted etc Le caratteristiche tecniche possono subire variazioni senza preavviso La AUREL S p A non si assume la responsabilit di danni causati dall uso improprio del dispositivo Technical features are subject to change without notice AUREL S p A does not assume responsibilities for any damages caused by the device s misuse AUREL S p A Via Foro dei Tigli 4 47015 Modigliana FC ITALY 12 05 2008 Tel 39 0546 941124 Fax 39 0546 941660 Pag 2 di2 AUREL WIRELESS TX AUDIO 2 4
3. AUREL TX AUDIO 2 4 P N 650201004G Datasheet and User Manual for TX AUDIO 2 4 Features 1 Non compression for high sound quality with delay time 0 5 ms 2 Digital audio with 44 1 KHz sampling rate and 16 bit resolution 3 FSK digital modulation 4 Embedded antenna for cost effect and fast development 5 8 selectable channels 6 Low power consumption for mobile application 7 10dBm RF Output Power 8 Application distance of more than 30 meters when used with RX AUDIO 2 4 650201005G 9 See 650201062 TX AUDIO 2 4 AE for incremented features module Specification Model TX AUDIO 2 4 Supply voltage 3 6 5 Vdc Current consumption 93 mA typ Operating temperature 10 60C Frequency range 2400 2483 5 MHz Modulation FSK Channel number 8 Channel spacing 9 MHz Frequency stability 100 KHz TX power 10 dBm ERP Input impedante gt 10 Kohm Input level 4 Vpp max Response 20 Hz 20 KHz Dynamic range 92 dB typ Separation 80 dB typ SN ratio 87 dB typ When used with RX AUDIO 2 4 650201005G Board dimensions 46 x 16 x 7 mm gt ry i i 4 X _ co J000 Pin AUREL S p A Via Foro dei Tigli 4 47015 Modigliana FC ITALY 12 05 2008 Tel 39 0546 941124 Fax 39 0546 941660 Pag 1di1 AUREL WIRELESS TX AUDIO 2 4 P N 650201004G Ground USER_BIT Maximum data 5Kbps input Application circuit Application circuit for TX module ul USER_BIT INPUT 2 not connected
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