CRD-4525-D1 Cirrus Logic Inc, CRD-4525-D1 Datasheet - Page 13

• Manufacturer Part Number: CRD-4525-D1
• Description: Audio Modules & Development Tools Eval Bd PWM Contrlr+ PwrStg_4Lyr 1oz Cu
• Manufacturer: Cirrus Logic Inc

Specifications of CRD-4525-D1

• Description/function: Audio Amplifiers
• Product: Audio Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS804RD4
4.2.1
Suppression of EMI at the Source
Several techniques are used in the circuit design and board layout to minimize high frequency fields in the
immediate vicinity of the high power components. Specific techniques include the following:
• As mentioned in
• Each output of the CS4525 includes “snubbing” components. For example, OUT1 includes snubber
• A separate ground plane with a solid electrical connection to the chassis, and which surrounds the
• Make use of source termination resistors on all digital signals whose traces are longer than about
mizing the loop area of the decoupling loop is one aspect of minimizing EMI.
components R24 (5.62 Ω) and C23 (680 pF). These components serve to damp ringing on the switch-
ing outputs in the 30-50 MHz range. The snubbing components should be as close as practical to the
output pins to maximize their effectiveness.
speaker output connector, should be implemented. This allows the speaker outputs to be RF decou-
pled to the chassis just before they exit the chassis from the speaker connector.
25 mm.
Section
4.1, effective power supply decoupling of high-frequency currents and mini-
CRD4525-Q1
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