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TDA5637B Datasheet(PDF) 13 Page - NXP Semiconductors |
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TDA5637B Datasheet(HTML) 13 Page - NXP Semiconductors |
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13 / 28 page  1996 Dec 02 13 Philips Semiconductors Product specification 9 V VHF hyperband and UHF mixer/oscillator for TV and VCR 3-band tuners TDA5636B; TDA5637B Fig.8 Gain measurement in bands B and C. Vi =Vmeas ; Vo =V’meas × + 15.4 dB (transformer ratio and transformer loss). Voltage gain for band B and C = 20log + loss(hybrid). loss(hybrid) = 1 dB. 50 27 + 50 ------------------- N1 N2 -------- V o V i ------ handbook, full pagewidth MGC506 D.U.T. RFB (RFC) RFB (RFC) IF out IF out 27 Ω 50 Ω V o 2 x 5 turns 2 turns i V meas V' spectrum analyzer signal source V V HYBRID AC BD TR N1/N2 = 5 e 50 Ω 50 Ω 50 Ω meas RMS voltmeter Fig.9 Noise figure measurement in bands B and C. handbook, full pagewidth MBH049 D.U.T. IFOUT1 IFOUT2 NOISE METER NOISE SOURCE 2 x 5 turns 2 turns TR N1/N2 = 5 HYBRID AC BD 50 Ω CIN1 CIN2 Loss of the hybrid: 1 dB. NF = NFmeas − loss of the hybrid. |
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