CMX639E2 View Datasheet(PDF) - CML Microsystems Plc

Part Name

Description

MFG CO.

CMX639E2

Consumer / Commercial CVSD Digital Voice Codec

CML Microsystems Plc 

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CVSD Codec

CMX639

3

Input Frequency = 820Hz

2

1

0

-1

-40

-30 -20 -10 0 10

Input Level (dBmO)

Figure 7 Typical Variation of Gain with

Input Level (32kbps)

Ref: 0dB Input Level = 489mVrms

35

Input Frequency = 820 Hz

30

64 kbps

32 kbps

20

16 kbps

ref.

10

-40 -30 -20 -10

0

Input Level (dB)

Figure 8 Typical S/N Ratio with Input Level

© 2000 Consumer Microcircuits Limited

14

CMX639/2

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