Wavecom GS64 Especificações descarregar pdf (Página 58)

Product Technical Specification & Customer Design Guidelines

Interfaces

Page: 57 / 116

This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without

prior written agreement.

WA_DEV_Q64_PTS_001-003 January 9, 2009

Figure 14: Example of MIC1 input differential connection without LC filter

*:Z1 is from 200Hz to 4kHz. For more characteristics refer to the chapter 3.11.1.1.1.

The capacitor C1 is highly recommended to eliminate the TDMA noise. C1 must be

close to the microphone.

Recommended components:

• C1 : 12pF to 33pF (needs to be tuned depending on the design)

• C2, C3, C4 : 47pF (need to be tuned depending on the design)

• L1, L2 : 100nH (need to be tuned depending on the design)

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 117 118

Sem comentários

Wavecom GS64 Especificações Página 58