PCN/PCS Delta Modulation CODEC
8
MX609
Input Level
64kb/s
= -20dB
35
30
25
20
S/N
(dB)
15
32kb/s
10
5
16kb/s
3000
500
1000
1500
2000
2500
3500
Frequency (Hz)
Figure 5: Typical S/N Ratio with Input Frequency
Sample Rate = 32 kb/s
Ref: 0dB Input Level = 489mVrms
5
0
-5
ref.
-50
-40
-30
-20
-10
0
10
Input Level (dB)
Figure 6: Typical Variation of Gain with Input Level
Ref: 0dB Input Level = 489mVrms
Input Frequency = 820 Hz
35
30
64 kb/s
32 kb/s
16 kb/s
20
10
ref.
-40
-30
-20
-10
0
Input Level (dB)
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
All Trademarks and service marks are held by their respective companies.
CMLMICRO [ CML MICROCIRCUITS ]
