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MC13142 Folha de dados(PDF) 5 Page - Motorola, Inc |
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MC13142 Folha de dados(HTML) 5 Page - Motorola, Inc |
5 / 16 page MC13142 5 MOTOROLA RF/IF DEVICE DATA PIN FUNCTION DESCRIPTION (continued) Pin Description Equivalent Internal Circuit (20 Pin LQFP) Symbol 16 Pin SOIC Description Equivalent Internal Circuit (20 Pin LQFP) Symbol 9, 12 VEE VCC VCC 10 IF– 9 VEE VEE, Negative Supply These pins are VEE supply for the mixer IF output. In the application PC board these pins are tied to a common VEE trace with other VEE pins. 10, 11 IF–, IF+ 11 IF+ 12 VEE IF Output The IF is a differential open collector configuration which designed to use over a wide frequency range for up conversion as well as down conversion. Differential to single–ended circuit configuration and matching options are discussed in the application section. 6.0 dB of additional Mixer gain can be achieved by conjugately matching at the desired IF frequency. 13 RFm VCC 13 Vref1 VEE 33 Mixer RF Input The mixer input impedance is broadband 50 Ω for applications up to 1.8 GHz. It easily interfaces with a RF ceramic filter as shown in the application schematic. 14 Mix Lin Cont 14 Mix Lin Cont RFm 33 400 µA Mixer Linearity Control The mixer linearity control circuit accepts approximately 0 to 2.3 mA control current to set the dynamic range of the mixer. An Input Third Order Intercept Point, IIP3 of 20 dBm may be achieved at 2.3 mA of control current (approximately 7.0 mA of additional supply current). 15 VCC VCC 15 VCC VCC, Power Supply |
Nº de peça semelhante - MC13142 |
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Descrição semelhante - MC13142 |
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