FX629 Datasheet, PDF (6/10 Pages) CML Microcircuits – Delta Modulation Codec

Typical Codec Performance ...... relative to the Mil-Std-188-113 Specification
3
2
1
0
-1
0dBm0 Input Level = 489mVrms
-2
Input Frequency = 800Hz
Ref Level: -15dBm0 = 87mVrms
-3
ref.
13
- 30
- 20
- 10
0
10
Input Level (dBm0)
Fig.5 Gain vs Input Level (16kbit/s)
3
2
1
0
-1
0dBm0 Input Level = 489mVrms
-2
Input Frequency = 800Hz
Ref Level: -15dBm0 = 87mVrms
-3
ref.
13
- 30
- 20
- 10
0
10
Input Level (dBm0)
Fig.6 Gain vs Input Level (32kbit/s)
Ref: 0dBm0 Input Level = 489mVrms
20
Input Frequency = 800Hz
15
10
5
0
- 30
- 20
- 10
0
Input Level (dBm0)
Fig.7 S/N vs Input Level (16kbit/s)
Ref: 0dBm0 Input Level = 489mVrms
Input Frequency = 800Hz
25
20
15
- 30
- 20
- 10
0
Input Level (dBm0)
Fig.8 S/N vs Input Level (32kbit/s)
+ 10
1.5
0
1.5
- 10
- 20
Input Level = -15dBm0
- 30
- 40
- 50
ref.
- 60
0
0.3
0.8 1
2
Fig.9 Attenuation Distortion vs Frequency (16kbit/s)
6
2.6
3
4 ^4.2
5
6
Frequency (kHz)