參數(shù)資料
型號(hào): T7570
元件分類: Codec
英文描述: T7570 Programmable PCM Codec with Hybrid-Balance Filter
中文描述: T7570可編程PCM編解碼器與混合平衡濾波器
文件頁(yè)數(shù): 17/28頁(yè)
文件大?。?/td> 567K
代理商: T7570
17
Lucent Technologies Inc.
Data Sheet
October 1996
T7570 Programmable PCM Codec
with Hybrid-Balance Filter
Transmission Characteristics
(continued)
Table 14. Gain and Dynamic Range
(continued)
Table 15. Envelope Delay Distortion
Parameter
Receive Gain
Variation with
Frequency
Receive Gain
Variation with
Signal Level
Symbol
G
RAF
Test Conditions
T
A
(
°
C)
Min
Typ
Max
Unit
Relative to 1020 Hz,
D
R
0 or D
R
1 = 0 dBm0 code,
minimum gain < G
R
< maximum gain:
f
3000 Hz
f = 3140 Hz
f = 3380 Hz
f = 3860 Hz
f
4600 Hz
Sinusoidal test method,
reference level = 0 dBm0:
D
R
0 = –40 dBm0 to +3 dBm0
D
R
0 = –50 dBm0 to –40 dBm0
D
R
0 = –55 dBm0 to –50 dBm0
–0.125
±
0.04
–0.57
–0.885 –0.58 +0.012
–10.7
0.125
0.125
dB
dB
dB
dB
dB
0.01
–8.98
–28
G
RAL
–0.2
–0.4
–1.2
0.2
0.4
1.2
dB
dB
dB
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
Min
–40
–30
Max
315
220
145
75
40
75
105
155
200
90
125
175
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
Tx Delay, Absolute
Tx Delay, Relative
to 1600 Hz
Rx Delay, Absolute
Rx Delay, Relative
to 1600 Hz
D
RA
D
RR
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