Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
TPA6205A1DRBTG4 Datasheet(PDF) 11 Page - Texas Instruments |
|
TPA6205A1DRBTG4 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 26 page www.ti.com _ + VDD VO+ VO- GND ToBattery Cs Bias Circuitry IN- IN+ SHUTDOWN RI1 RF CI1 CP RP RF C( ) BYPASS (Optional) CI2 R I2 SingleEnded Input1 SingleEnded Input2 Input Capacitor (CI) SELECTING COMPONENTS Resistors (RF and RI) Gain − RF/RI (1) fc + 1 2pR I C I (2) Bypass Capacitor (CBYPASS) and Start-Up Time –3 dB fc C I + 1 2pR I fc (3) TPA6205A1 SLOS490A – JULY 2006 – REVISED AUGUST 2006 Figure 31. Application Schematic With TPA6205A1 Summing Two Single-Ended Inputs The TPA6205A1 does not require input coupling capacitors if using a differential input source that is biased from 0.5 V to VDD - 0.8 V. Use 1% tolerance The input (RI) and feedback resistors (RF) set the or better gain-setting resistors if not using input gain of the amplifier according to Equation 1. coupling capacitors. In the single-ended input application an input RF and RI should range from 1 kΩ to 100 kΩ. Most capacitor, CI, is required to allow the amplifier to bias graphs were taken with RF = RI = 20 kΩ. the input signal to the proper dc level. In this case, CI and RI form a high-pass filter with the corner Resistor matching is very important in fully frequency determined in Equation 2. differential amplifiers. The balance of the output on the reference voltage depends on matched ratios of the resistors. CMRR, PSRR, and the cancellation of the second harmonic distortion diminishes if resistor mismatch occurs. Therefore, it is recommended to use 1% tolerance resistors or better to keep the performance optimized. The internal voltage divider at the BYPASS pin of this device sets a mid-supply voltage for internal references and sets the output common mode voltage to VDD/2. Adding a capacitor to this pin filters any noise into this pin and increases the kSVR. C(BYPASS)also determines the rise time of VO+ and VO- when the device is taken out of shutdown. The larger The value of CI is important to consider as it directly the capacitor, the slower the rise time. Although the affects the bass (low frequency) performance of the output rise time depends on the bypass capacitor circuit. Consider the example where RI is 10 kΩ and value, the device passes audio 4 µs after taken out the specification calls for a flat bass response down of shutdown and the gain is slowly ramped up based to 100 Hz. Equation 2 is reconfigured as Equation 3. on C(BYPASS). To minimize pops and clicks, design the circuit so the impedance (resistance and capacitance) detected by both inputs, IN+ and IN-, is equal. In this example, CI is 0.16 µF, so one would likely choose a value in the range of 0.22 µF to 0.47 µF. A further consideration for this capacitor is the leakage path from the input source through the input network (RI, CI) and the feedback resistor (RF) to the load. 11 Submit Documentation Feedback |
Número de pieza similar - TPA6205A1DRBTG4 |
|
Descripción similar - TPA6205A1DRBTG4 |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | 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 |