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FX829 Datasheet(PDF) 7 Page - CML Microcircuits |
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FX829 Datasheet(HTML) 7 Page - CML Microcircuits |
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7 / 34 page ![]() Baseband Signal Processor FX829 © 1997 Consumer Microcircuits Limited 7 D/829/4 1.4 External Components C1 22pF ±20% R1 1M W ±5% X1 4.032MHz ±100ppm C2 22pF ±20% R2 Note 1 ±10% C3 68pF ±20% R3 Note 1 ±10% C4 0.1µF ±20% R4 100k W ±10% C5 0.1µF ±10% R5 100k W ±10% C6 100pF ±20% R6 Note 2 ±10% C7 0.1µF ±20% R7 22k W ±10% C8 Note 2 ±20% C9 5.6nF ±20% Notes: 1. R2, R3, R4 and C3 form the gain components for the Summing Amplifier (AMP2). R2 and R3 should be chosen as required from the system specification, using the following formulae: Audio Gain = − R4 R3 DTMF Gain = − R4 R2 2. R5, R6, C6 and C8 form the gain components for the Rx Input Amplifier (AMP1). R6 should be chosen as required by the signal level, using the following formula: Gain = − R5 R6 C8 x R6 should be chosen so as not to compromise the low frequency performance of this product. Figure 2 Recommended External Components |
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