MT8967 Zarlink Semiconductor, Inc., MT8967 Datasheet - Page 18

• Manufacturer Part Number: MT8967
• Description: Integrated CODEC with A-Law companding and CCITT PCM encoding (20 pin PDIP-SOIC)
• Manufacturer: Zarlink Semiconductor, Inc.

MT8960/61/62/63/64/65/66/67
6-36
Attenuation
Relative To
Attenuation
At 1 kHz (dB)
Attenuation
Relative To
Attenuation
At 1 kHz (dB)
SCALE B
0
0
5060 100
SCALE A
0
1
2
3
4
40
10
20
25
30
0
100
4
1
3
SCALE A
2
-0.125
0.35
Figure 10 - Attenuation vs Frequency for Transmit (A/D) Filter
Figure 11 - Attenuation vs Frequency for Receive (D/A) Filter
200
200
PASSBAND ATTENUATION
PASSBAND ATTENUATION
300
300
FREQUENCY (Hz)
FREQUENCY (Hz)
3000
3000
ISO
3200 3300 3400
3200 3300 3400
SCALE A
2
SCALE A
-CMOS
-0.125
0.125
1
2
3
4
0.35
-0.125
0.125
1
2
3
4
0.35
SCALE B
10
14
20
30
32
40
SCALE B
10
14
20
28
30
40
4000
4000
STOPBAND ATTENUATION
STOPBAND ATTENUATION
-18
-14
4600
-14 SIN ∏(4000-F)
Note: Above function
SIN
4600
SIN
∏(4000-F)
crossover occurs
at 4000Hz.
∏(4000-F)
5000
1200
1200
5000
1200
10000
-7/9
10000
- 1
- 1