PCN/PCS Delta Modulation CODEC
35
8
Input Level = -20dB
MX609
30
64kb/s
25
20
S/N
(dB)
15
32kb/s
10
16kb/s
5
500
1000
1500
2000
2500
3000
3500
Frequency (Hz)
Figure 5: Typical S/N Ratio with Input Frequency
Sample Rate = 32 kb/s
Ref: 0dB Input Level = 489mVrms
5
∆
Gain (dB)
0
-5
-50
-40
-30
-20
-10
ref.
0
10
Input Level (dB)
Figure 6: Typical Variation of Gain with Input Level
35
Ref: 0dB Input Level = 489mVrms
Input Frequency = 820 Hz
30
64 kb/s
S/N (dB)
32 kb/s
20
16 kb/s
10
-40
-30
-20
-10
Input Level (dB)
ref.
0
Figure 7: Typical S/N Ratio with Input Level
1998
MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 204800069.005
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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CMLMICRO [ CML MICROCIRCUITS ]
