CRD-4412A Cirrus Logic Inc, CRD-4412A Datasheet
CRD-4412A
Specifications of CRD-4412A
Related parts for CRD-4412A
CRD-4412A Summary of contents
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... V supply. The design can be easily config- ured to operate as a single channel parallel full-bridge power stage capable of delivering 30 W into a 4 Ω load from an +18 V supply. The CRD4412A can be powered from + +18 V. The CRD4412A is designed to operate in conjunction with the CRD4525. When connected, the combination implements a 2 ...
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... Figure 18. THD+N vs Frequency in Stereo Full-Bridge Configuration ...................................................... 23 Figure 19. FFT at -60dB Input in Stereo Full-Bridge Configuration ........................................................... 24 Figure 20. FFT at 0dB Input in Stereo Full-Bridge Configuration .............................................................. 25 Figure 21. Inter-Modulation Distortion of 19 kHz + 20 kHz in Stereo Full-Bridge Configuration ............... 26 LIST OF TABLES Table 1. System Connections ..................................................................................................................... 7 Table 2. System Headers ............................................................................................................................ 7 Table 3. CRD4412 Interface Header Signal Assignments .......................................................................... 7 2 CRD4412A DS786RD1 ...
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... The CRD4412A reference design is an excellent means for evaluating the CS4412A 30 W digital amplifier power stage. The board is designed to connect directly to the CRD4525 digital amplifier reference design for easy evalu- ation. Alternatively, the CRD4412A may be used alone with all logic-level and power connections made through the CRD4412 interface header ...
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... One wire is used to connect between the red terminals, and another is used to connect be- tween the black terminals. This parallel connection adjusts the characteristic of the output filters, effectively optimizing them for 4 Ω speaker loads. Figure 2. Mono Parallel Full-Bridge Speaker Terminal Configuration 4 Left + Right + Right - Left - CRD4412A Mono + Mono - DS786RD1 ...
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... Connect an input source to the S/PDIF or analog input connectors. 11. Plug the input to the +18 V power supply (included with the CRD4525) into an available power outlet. 12. Plug the output of the +18 V power supply into the power input connector on the CRD4525. ...
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... Drive the reset input high to release the CS4412A from reset. 10. Begin PWM switching on the logic level PWM input signals. In this state, the CRD4412A will amplify the content present on the logic level PWM input signals. 3. GROUNDING AND POWER SUPPLY DECOUPLING The CS4412A requires careful attention to power supply and grounding arrangements to optimize performance and heat dissipation and minimize radiated emissions ...
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... Make use of source termination resistors on all digital signals whose traces are longer than about 25 mm extremely critical that the layout of the power amplifier section of the CRD4412A be copied as exactly as possible to assure best RF/EMI performance. 4. SYSTEM CONNECTIONS AND JUMPERS ...
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... CRD SCHEMATICS Figure 3. CS4412A - Schematic Page 1 ...
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Figure 4. Power Outputs - Schematic Page 2 ...
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... CRD LAYOUT 2.65” 4.5” Figure 5. Silkscreen Top ...
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Figure 6. Top-Side Copper Layer ...
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Figure 7. Inner Copper Layer 1 ...
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Figure 8. Inner Copper Layer 2 ...
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Figure 9. Bottom-Side Copper Layer ...
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... PARALLEL FULL-BRIDGE PERFORMANCE PLOTS Unless otherwise stated, all measurements taken utilizing a CRD4525 with digital optical input at 1 kHz. Outputs connected in parallel as described for mono parallel full-bridge configuration in Section 1.5 on page 4 during testing 2.75 + 2 1.75 + 1 0. -0.25 A -0.5 -0. ...
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Figure 11. THD+N vs Power in Parallel Full-Bridge Configuration 100 kHz ...
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W 0.02 0.01 0.005 0.002 0.001 20 50 100 Figure 12. THD+N vs Frequency in Parallel Full-Bridge Configuration 200 500 10k 20k ...
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B -70 r -75 A -80 -85 -90 -95 -100 -105 -110 -115 -120 -125 -130 -135 -140 30 50 100 Figure 13. FFT ...
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B -70 r -75 A -80 -85 -90 -95 -100 -105 -110 -115 -120 -125 -130 -135 -140 30 50 100 Figure 14. FFT ...
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... STEREO FULL-BRIDGE PERFORMANCE PLOTS Unless otherwise stated, all measurements taken utilizing a CRD4525 with digital optical input at 1 kHz. Both outputs driving 8 Ω resistive loads as described for stereo full-bridge configuration 2.75 + 2 1.75 + 1 0. -0.25 A -0.5 -0.75 -1 -1.25 -1.5 -1. ...
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Figure 17. THD+N vs Power in Stereo Full-Bridge Configuration 5 kHz 100 Hz 500m kHz ...
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Figure 18. THD+N vs Frequency in Stereo Full-Bridge Configuration 200 500 10k 20k ...
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B -70 r -75 A -80 -85 -90 -95 -100 -105 -110 -115 -120 -125 -130 -135 -140 20 50 100 Figure 19. FFT ...
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B -70 r -75 A -80 -85 -90 -95 -100 -105 -110 -115 -120 -125 -130 -135 -140 20 50 100 Figure 21. Inter-Modulation ...
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... AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. DS786RD1 Changes www.cirrus.com. CRD4412A 27 ...