Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
CS4461-CZZR Datasheet(PDF) 8 Page - Cirrus Logic |
|
CS4461-CZZR Datasheet(HTML) 8 Page - Cirrus Logic |
8 / 11 page 8 DS650F1 CS4461 4. APPLICATIONS 4.1 Digital Connections PSR_MCLK provides the system clock for the CS4461. PSR_SYNC and PSR_DATA provide the output of the modulator to the class-D modulator with feedback capabilities. Series damping resistors should be used on PSR_MCLK, PSR_SYNC, and PSR_DATA to minimize noise. These should be placed as close as pos- sible to their signal source. The pin labeled TEST should also be pulled low to GND through a 47 k Ω resistor to minimize noise coupling into the ADC modulator. 4.2 Analog Connections The analog modulator samples the input at PSR_MCLK/4 (6.144 MHz with PSR_MCLK=24.576 MHz). Figure 2 shows the suggested analog input filter. This filter topology will correctly buffer the power supply’s AC and DC components for PSR processing by the class-D modulator. The use of capacitors which have a large voltage coefficient (such as general purpose ceramics) must be avoided since these can degrade sig- nal linearity. C0G dielectrics should be used wherever possible. R1 and R2 should be used to scale VP (class-D amplifier high voltage power supply) to less than the CS4461 maximum AIN+/AIN- input voltage (3.9 V). The following equation can be used to scale R1 and R2: 2 * (VP * (1 + %VP_Ripple)) * (R2 / (R1 + R2)) < 3.9 V Example (VP = 40 V, %VP_Ripple = 4%): 2 * (40 * (1 + 0.04)) * (1.96 k Ω / (40.2 kΩ + 1.96 kΩ) = 3.87 V CS4461 AIN+ AIN- 2200 pF C0G - + 90.9 Ω 120 pF 2 k Ω 2 k Ω +5.0 V 649 Ω 90.9 Ω + - +5.0 V 120 pF 649 Ω VP R1 R2 Figure 2. CS4461 Recommended Analog Input Buffer |
Número de pieza similar - CS4461-CZZR |
|
Descripción similar - CS4461-CZZR |
|
|
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 |