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參數(shù)資料
| 型號(hào)： | T8538A |
| 廠商： | Lineage Power |
| 元件分類： | Codec |
| 英文描述： | Quad Programmable Codec(四通道可編程編解碼器) |
| 中文描述： | 四可編程編解碼器（四通道可編程編解碼器） |
| 文件頁(yè)數(shù)： | 26/42頁(yè) |
| 文件大?。?/td> | 1019K |
| 代理商： | T8538A |
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26
Lucent Technologies Inc.
Advance Data Sheet
October 2000
T8538A Quad Programmable Codec
Electrical Characteristics
(continued)
Noise Characteristics
Table 10. Per-Channel Noise Characteristics
* RTZ and CTZ paths open. All channels active.
Parameter
Symbol
N
XC
Test Conditions
0 dB transmit gain*
Min
—
Typ
10
Max
18
Unit
dBrnC0
Transmit Noise,
C-Message Weighted
Transmit Noise,
P-Message Weighted
Receive Noise,
C-Message Weighted
Receive Noise,
P-Message Weighted
Noise, Single Frequency
N
XP
0 dB transmit gain*
—
—
68
dBm0p
N
RC
0 dB receive gain, digital pattern
corresponding to idle PCM code,
μ
-law*.
0 dB receive gain, digital pattern
corresponding to idle PCM code, A-law*.
f = 0 kHz to 100 kHz, loop around
measurement, V
VFxI
= 0
Vrms.
V
DD
= 5.0 V
DC
+ 100
mVrms:
f = 0 kHz to 4 kHz
f = 4 kHz to 50 kHz
C-message weighted
Measured on
VF
R
OP
,
V
DD
= 5.0 V
DC
+ 100 mVrms:
f = 0 kHz to 4 kHz
f = 4 kHz to 25 kHz
f = 25 kHz to 50 kHz
0 dBm0, 300 Hz to 3400 Hz signal applied
to
V
VFxI
, transmit gain set to 0 dB:
4600 Hz to 7600 Hz
7600 Hz to 8400 Hz
8.4 kHz to 50 kHz
—
10
13
dBrnC0
N
RP
—
—
75
dBm0p
N
RS
—
—
53
dBm0
Power Supply Rejection,
Transmit
PSR
X
36
30
—
—
—
—
dBC
dBC
Power Supply Rejection,
Receive
PSR
R
36
40
36
—
—
—
—
—
—
dBC
dBC
dBC
Spurious Out-of-Band
Signals at the Chan-
nel Outputs
SOS
—
—
—
—
—
—
30
40
30
dB
dB
dB
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