FX651 データシートの表示（PDF） - CML Microsystems Plc

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FX651

SPM and Security Subsystem

CML Microsystems Plc 

SPM and Security Subsystem

1.4 External Components

FX651

Component

C1, C2

R1, R3

R2, R4

C3, C4

R5

C5

3.3V

33pF ±10%

1.1MΩ ±1%

270kΩ ±1%

0.1µF ±20%

51kΩ ±1%

100pF ±10%

5.0V

68pF ±10%

1.0MΩ ±1%

330kΩ ±1%

Notes

1. The device's sensitivity is approximately proportional to its power supply (VDD) voltage. The input

gain must compensate for this and also prevent the input circuitry saturating. It is recommended

that the amplifier components (R1 to R4, C1 and C2) are used to set the gain between -10dB (if

VDD is 5.0V) and -13dB (if VDD is 3.3V).

Figure 2 Recommended External Components (D4)

© 1997 Consumer Microcircuits Limited

6

D/651/4

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