參數(shù)資料
型號(hào): T7502
元件分類(lèi): Codec
英文描述: T7502 Dual PCM Codec with Filters
中文描述: T7502雙PCM編解碼器與濾波器
文件頁(yè)數(shù): 7/16頁(yè)
文件大?。?/td> 417K
代理商: T7502
Lucent Technologies Inc.
7
Data Sheet
February 1998
T7502 Dual PCM Codec with Filters
Transmission Characteristics
(continued)
ac Transmission Characteristics
(continued)
Table 8. Envelope Delay Distortion
Overload Compression
Figure 4 shows the region of operation for encoder signal levels above the reference input power (0 dBm0).
5-3586
Figure 4. Overload Compression
Parameter
Symbol
D
XA
D
XR
Test Conditions
f = 1600 Hz
f = 500 Hz—600 Hz
f = 600 Hz—800 Hz
f = 800 Hz—1000 Hz
f = 1000 Hz—1600 Hz
f = 1600 Hz—2600 Hz
f = 2600 Hz—2800 Hz
f = 2800 Hz—3000 Hz
f = 1600 Hz
f = 500 Hz—1000 Hz
f = 1000 Hz—1600 Hz
f = 1600 Hz—2600 Hz
f = 2600 Hz—2800 Hz
f = 2800 Hz—3000 Hz
With or between channels
f = 1600 Hz
Min
–40
–30
Typ
Max
230
220
145
75
40
75
105
155
275
90
125
175
470
Unit
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
T
X
Delay, Absolute
T
X
Delay, Relative to 1600 Hz
R
X
Delay, Absolute
R
X
Delay, Relative to 1600 Hz
D
RA
D
RR
Round Trip Delay, Absolute
D
RTA
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
ACCEPTABLE
REGION
FUNDAMENTAL INPUT POWER (dBm)
F
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