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ISL54062IRTZ-T データシート(PDF) 11 Page - Intersil Corporation |
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ISL54062IRTZ-T データシート(HTML) 11 Page - Intersil Corporation |
11 / 16 page 11 FN6581.1 November 3, 2009 High-Frequency Performance In 50 Ω systems, the ISL54062 has an ON switch -3dB bandwidth of 60MHz (see Figure 21). The frequency response is very consistent over a wide V+ range, and for varying analog signal levels. An OFF switch acts like a capacitor across the open terminals and AC couples higher frequencies, resulting in signal feed-through from a switch’s input to its output. Off-Isolation is the resistance to this feed-through. Crosstalk indicates the amount of feed-through from one switch channel to another switch channel. Figure 22 details the high Off-Isolation and Crosstalk rejection provided by this part. At 100kHz, Off-Isolation is about 60dB in 50 Ω systems, decreasing approximately 20dB per decade as frequency increases. At 1MHz, Crosstalk is about -75dB in 50 Ω systems, decreasing approximately 20dB per decade as frequency increases. Leakage Considerations Reverse ESD protection diodes are internally connected between each analog-signal pin, V+ and GND. One of these diodes conducts if any analog signal exceeds the recommended analog signal range. Virtually all the analog switch leakage current comes from the ESD diodes and reversed biased junctions in the switch cell. Although the ESD diodes on a given signal pin are identical and therefore fairly well balanced, they are reverse biased differently. Each is biased to either the +Ring or -Ring and the analog input signal. This means their leakages will vary as the signal varies. The difference in the two diode leakages to the +Ring or -Ring and the reverse biased junctions at the internal switch cell constitutes the analog-signal-path leakage current. Typical Performance Curves TA = +25°C, Unless Otherwise Specified FIGURE 11. ON-RESISTANCE vs SUPPLY VOLTAGE vs SWITCH VOLTAGE FIGURE 12. ON-RESISTANCE vs SWITCH VOLTAGE FIGURE 13. ON-RESISTANCE vs SWITCH VOLTAGE FIGURE 14. ON-RESISTANCE vs SWITCH VOLTAGE VCOM (V) 0 12 3 4 5 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 -1 -2 -3 -4 -5 -6 ICOM = 100mA V+ = 1.8V V+ = 2.7V V+ = 4.5V 0 0.30 VCOM (V) 0.35 0.40 0.45 0.50 0.60 0.65 0.70 0.75 0.80 0.85 0.95 0.90 1.00 0.55 -3 -2 -1 12 345 ICOM = 100mA V+ = 4.5V T = +85°C T = +25°C T = -40°C VCOM (V) 0 0.30 0.35 0.40 0.45 0.50 0.60 0.65 0.70 0.75 0.80 0.85 0.95 0.90 0.55 -3 -2 -1 12345 1.00 ICOM = 100mA V+ = 4.3V T = +85°C T = +25°C T = -40°C VCOM (V) 0 1.05 0.35 0.45 0.65 0.75 0.85 0.95 0.55 -3 -2 -1 1 2 3 4 -5 -4 1.15 1.25 ICOM = 100mA V+ = 2.7V T = +85°C T = +25°C T = -40°C ISL54062 |
同様の部品番号 - ISL54062IRTZ-T |
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同様の説明 - ISL54062IRTZ-T |
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