Os motores de busca de Datasheet de Componentes eletrônicos |
|
TDA7297D Folha de dados(PDF) 3 Page - STMicroelectronics |
|
TDA7297D Folha de dados(HTML) 3 Page - STMicroelectronics |
3 / 11 page 3/11 TDA7297D Table 4. Electrical Characteristcs (VCC = 13V, RL = 8Ω, f = 1KHz, Tamb = 25°C unless otherwise specified) 3 APPLICATIVE SUGGESTIONS STAND-BY AND MUTE FUNCTIONS 3.1 Microprocessor Application In order to avoid annoying "Pop-Noise" during Turn-On/Off transients, it is necessary to guarantee the right St- by and mute signals sequence.It is quite simple to obtain this function using a microprocessor (Fig. 4 and 5). At first St-by signal (from µP) goes high and the voltage across the St-by terminal (Pin 9) starts to increase ex- ponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to avoid "POP" and "CLICK" on the outputs. When this voltage reaches the St-by threshold level, the amplifier is switched-on and the external capacitors in series to the input terminals (C1, C3) start to charge. It's necessary to mantain the mute signal low until the capacitors are fully charged, this to avoid that the device goes in play mode causing a loud "Pop Noise" on the speakers. A delay of 100-200ms between St-by and mute signals is suitable for a proper operation. Symbol Parameter Test Condition Min. Typ. Max. Unit VCC Supply Range 6.5 18 V Iq Total Quiescent Current RL = ∞ 50 65 mA VOS Output Offset Voltage 120 mV PO Output Power THD 10% 8.3 10 W THD Total Harmonic Distortion PO = 1W 0.1 0.3 % PO = 0.1W to 5W f = 100Hz to 15KHz 1% SVR Supply Voltage Rejection f = 100Hz, VR =0.5V 40 56 dB CT Crosstalk 46 60 dB AMUTE Mute Attenuation 60 80 dB Tw Thermal Threshold 150 °C GV Closed Loop Voltage Gain 31 32 33 dB ∆GV Voltage Gain Matching 0.5 dB Ri Input Resistance 25 30 K Ω VTMUTE Mute Threshold Vo = -30dB 2.3 2.9 4.1 V VTST-BY St-by Threshold 0.8 1.3 1.8 V IST-BY St-by Current 100 µA eN Total Output Noise Voltage A Curve f = 20Hz to 20KHz 150 220 500 µV µV |
Nº de peça semelhante - TDA7297D |
|
Descrição semelhante - TDA7297D |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |