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TX-AUDIO-2.4
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P.N. 650201004G
Preliminary datasheet 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
Specification
Model TX-AUDIO-2.4
Supply voltage 3.6 ÷ 5 Vdc
Current consumption 93 mA (typ)
Operating temperature -10 ÷ +60 C
Frequency range 2400 ÷ 2483.5 MHz
Modulation FSK
Channel number 8
Channel spacing 9 MHz
Frequency stability ± 100 KHz
TX power +10 dBm
Input impedante > 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)
Board dimension
Le caratteristiche tecniche possono subire variazioni senza preavviso. La AUREL S.p.A non si assume la responsabilità 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.
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AUREL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +39.0546.941124 Fax: +39.0546.941660
http://www.aurelwireless.com - email: [email protected]
24/01/2007
Pag 1 di 3
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TX-AUDIO-2.4
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P.N. 650201004G
Pin configuration
Pin # Pin name Pin description
1 R_CH Audio R channel
2 GND Ground
3 L-CH Audio L channel
4 5Vdc 3.6 ÷ 5 Vdc
5 SW Switch
6 N.C. Not connected
7 N.C. Not connected
8 USER_BIT Maximum data 5Kbps (input)
Application circuit
Application circuit for TX module
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.SW is used to select the channel
4.As to the user_bit, one can provide a data sequence defined by the user to this pin and this data
sequence will be delivered and received at the Rx module.
Le caratteristiche tecniche possono subire variazioni senza preavviso. La AUREL S.p.A non si assume la responsabilità 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
Tel.: +39.0546.941124 Fax: +39.0546.941660
http://www.aurelwireless.com - email: [email protected]
24/01/2007
Pag 2 di 3
Page 3
TX-AUDIO-2.4
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P.N. 650201004G
Application information
When you design the transmitter module in wireless speakers and headphones, pay attention to the
following considerations:
1.Do not bend down or up the antenna.
2.Do not let any metal objects too close to antenna.
3.Transmitter module must be kept away from speaker over 3 cm to avoid magnetic interference.
4.Power supply to transmitter module must be independent, different from the power of amplifier.
5.Avoid to put any cable or circuit nearby antenna (1-2 cm).
Le caratteristiche tecniche possono subire variazioni senza preavviso. La AUREL S.p.A non si assume la responsabilità 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
Tel.: +39.0546.941124 Fax: +39.0546.941660
http://www.aurelwireless.com - email: [email protected]
24/01/2007
Pag 3 di 3
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