전자부품 데이터시트 검색엔진 |
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ISL54001IRTZ 데이터시트(PDF) 9 Page - Intersil Corporation |
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ISL54001IRTZ 데이터시트(HTML) 9 Page - Intersil Corporation |
9 / 11 page 9 FN6458.2 October 17, 2007 large copper pad and multiple vias to the GND plane. The vias should be plugged and tented with plating and solder mask to ensure good thermal conductivity. Best thermal performance is achieved with the largest practical copper ground plane area. PCB Layout Considersations and Power Supply Bypassing To maintain the highest load dissipation and widest output voltage swing the power supply PCB traces and the traces that connect the output of the drivers to the speaker loads should be made as wide as possible to minimize losses due to parasitic trace resistance. Proper supply bypassing is necessary for high power supply rejection and low noise performance. A filter network consisting of a 10µF capacitor in parallel with a 0.1µF capacitor is recommended at the voltage regulator that is providing the power to the ISL54000, ISL54001, and ISL54002 IC. Local bypass capacitors of 0.1µF should be put at each VDD pin of the ISL54000, ISL54001, ISL54002 devices. They should be located as close as possible to the pin, keeping the length of leads and traces as short as possible. A 1µF capacitor from the REF pin (pin 10) to GND is needed for optimum PSRR and internal bias voltage stability. Typical Performance Curves TA = +25°C, Unless Otherwise Specified. FIGURE 1. THD+N vs FREQUENCY FIGURE 2. THD+N vs FREQUENCY FIGURE 3. THD+N vs OUTPUT POWER FIGURE 4. THD+N vs OUTPUT POWER FREQUENCY (Hz) 0.1 1.0 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 20 20k 50 100 200 500 1k 2k 5k 10k VDD = 5V BTL RL = 8Ω PO = 800mW FREQUENCY (Hz) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 20 20k 50 100 200 500 1k 2k 5k 10k VDD = 3.6V BTL RL = 8Ω PO = 200mW 1.0 OUTPUT POWER (W) 0.01 10.0 0.02 0.05 0.10 0.20 0.50 1.00 2.00 5.00 10m 1 20m 50m 100m 200m 500m VDD = 5V BTL RL = 8Ω f = 1kHz OUTPUT POWER (W) 0.01 10.0 0.02 0.05 0.10 0.20 0.50 1.00 2.00 5.00 10m 600m 20m 40m 70m 100m 200m VDD = 3.6V BTL RL = 8Ω f = 1kHz ISL54000, ISL54001, ISL54002 |
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