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CS42L55-CNZR 数据表(PDF) 10 Page - Cirrus Logic |
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CS42L55-CNZR 数据表(HTML) 10 Page - Cirrus Logic |
10 / 73 page 10 DS773F1 CS42L55 2. TYPICAL CONNECTION DIAGRAM Note 2 2.2 µF Note 1 Analog Input 1 Analog Input 2 1 µF GND/Thermal Pad VL 0.1 µF +1.65 V to +3.47 V SCL SDA RESET 2 k Ω LRCK MCLK SCLK 2.2 µF +VHPFILT VDFILT LINEREF SDIN SDOUT 1 µF AIN2REF AIN1A 1800 pF 1800 pF 100 k Ω 100 Ω AIN1B * * Digital Audio Processor AIN2A 1800 pF 1800 pF AIN2B * * FLYC FLYN -VHPFILT 2.2 µF 1 µF 1 µF 1 µF 1 µF 100 k Ω 100 Ω 100 Ω 100 Ω 100 k Ω 100 k Ω 2.2 µF ** ** VCP AIN1REF 1 µF LINEOUTA LINEOUTB 0.1 µF VA +1.65 V to +2.71 V 0.1 µF VLDO 2.2 µF VQ AGND NPO/C0G dielectric capacitors. 1000 pF AFILTA AFILTB 1000 pF 2.2 µF * * HPOUTB HPOUTA Headphone Out Left & Right 33 Ω 0.1 µF HPDETECT 33 Ω 0.1 µF 47 k Ω HPREF FILT+ +1.65 V to +2.71 V FLYP 2.2 µF ** ** ** Note 1 Notes: 1. The headphone amplifier’s output power and distortion are rated using the nominal capacitance shown. Larger capacitance reduces the ripple on the internal amplifiers’ supplies and in turn reduces the amplifier’s distortion at high output power levels. Smaller capacitance may not sufficiently reduce ripple to achieve the rated output power and distortion. Since the actual value of typical X7R/X5R ceramic capacitors deviates from the nominal value by a percentage specified in the manufacturer’s data sheet, capacitors should be selected based on the minimum output power and maximum distortion required. 2. The headphone amplifier’s output power and distortion are rated using the nominal capacitance shown and using the default charge pump switching frequency. The required capacitance follows an inverse relationship with the charge pump’s switching frequency. When increasing the switching frequency, the capacitance may decrease; when lowering the switching frequency, the capacitance must increase. Since the actual value of typical X7R/X5R ceramic capacitors deviates from the nominal value by a percentage specified in the manufacturer’s data sheet, capacitors should be selected based on the minimum output power, maximum distortion and maximum charge pump switching frequency required. 3. Additional bulk capacitance may be added to improve PSRR at low frequencies. 4. These capacitors serve as a charge reservoir for the internal switched capacitor ADC modulators and should be placed as close as possible to the inputs. They are only needed when the PGA (Programmable Gain Amplifier) is bypassed. 5. Input pairs (such as AIN2A, AIN2REF and AIN2B) may be left floating if they are not used. Note 4 Note 3 2 k Ω * ** Low ESR, X7R/X5R dielectric capacitors. ** ** ** ** ** ** ** ** ** ** ** ** Note 5 ** ** 562 Ω 562 Ω 3300 pF Rext Rext LPF is Optional Line Level Out Left & Right 3300 pF * * Figure 1. Typical Connection Diagram CS42L55 |
类似零件编号 - CS42L55-CNZR |
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类似说明 - CS42L55-CNZR |
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