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P1165 Datasheet(PDF) 4 Page - ETAL Group |
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P1165 Datasheet(HTML) 4 Page - ETAL Group |
4 / 7 page P1165 ETALDOC 78/22 Page 4 of 5 February 2006 PERFORMANCE CHARACTERISTICS EUROPEAN CTR21 COMPLEX MATCH Recommended Circ uit Fig 5 100 LINE 270 750 910 27nF 100nF 150nF μ 2.2 F Recommended Circ uit Fig 2 LINE 600 * If return loss > 16dB, 300Hz - 4kHz is a cc epta b le, blocking c apacitor may be relaxed to μ 6.8 F +50 20 %* 6.8 F +50 20 _ _ % 600 MATCH Ω 18nF 5% 680 10% 560 2% Recommended Circ uit Fig 6 910 LINE 270 750 330 82nF 150nF μ 2.2 F 0 -0.2 -0.3 -0.4 100Hz 200 300 500 1kHz 2 Frequency dB 34 5 10 -0.1 Ty pi ca l W or st C as e Frequency Response Fig 3 Figure 5 gives flat RX and TX responses against the reference impedance (typically around 0.5dB 200Hz - 4kHz). Return loss is typically better than 20dB. The 150nF capacitor should be of a temperature stable dielectric. In practice, the 100ohm resistor will normally connect to a low impedance TX output. For circuits with existing board drillings, figure 6 gives good return loss (>20dB) against the reference impedance, but TX and RX flatness are degraded by the use of this topology. For recommended matching to other reference impedances please contact ETAL. + _ -14 -22 -26 -30 100Hz 200 300 500 Typic al Worst Ca se 1kHz 2 Frequency dB 34 5 10 -18 Return Loss Fig 4 Typic al Funda mental 450Hz -74 -72 -76 -78 -80 -10 -5 Fundamental Power (dBm) 0+ 5 Third Harmonic Distortion vs. Signal Level Fig 7 500+ 600Hz Typic al 1.6kHz+ 2.0kHz Total power in line (dBm) 2 Tone Intermodula tion Products vs. Signal Level Fig 8 -70 -60 -80 -90 -10 -8 -6 -4 dBm -2 0 |
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