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參數(shù)資料
| 型號： | T8532 |
| 元件分類： | Codec |
| 英文描述： | T8502 and T8503 Dual PCM Codecs with Filters |
| 中文描述： | T8502和T8503雙的PCM編解碼器與濾波器 |
| 文件頁數(shù)： | 27/48頁 |
| 文件大?。?/td> | 999K |
| 代理商： | T8532 |
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Lucent Technologies Inc.
27
Preliminary Data Sheet
November 2000
Codec Chip Set
T8531/T8532 Multichannel Programmable
Transmission Characteristics
(continued)
Table 13. Noise (per Channel)
* Measured with a –50 dBm0 activation signal applied to VF
X
I input of channel under test.
Parameter
Symbol
N
XC
Test Conditions
0 dB transmit gain
Min
—
Typ
—
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 corre-
sponding to idle PCM code,
μ
-law
0 dB receive gain, digital pattern corre-
sponding to idle PCM code, A-law
f = 0 kHz to 100 kHz, loop around
measurement, VTX = 0 Vrms
V
DD
= 5.0 Vdc + 100 mVrms
f = 0 kHz to 4 kHz
f = 4 kHz to 50 kHz*
C-message weighted
Measured on VRP
V
DD
= 5.0 Vdc + 100 mVrms
f = 0 kHz to 4 kHz
f = 4 kHz to 25 kHz
f = 25 kHz to 50 kHz
Digital pattern corresponding to idle PCM
code,
μ
-law, C-message weighted
0 dBm0, 300 Hz to 3400 Hz input
oversampled data code applied
at OSDR0 (or OSDR1):
4600 Hz to 7600 Hz
7600 Hz to 8400 Hz
8400 Hz to 50 kHz
—
—
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 Channel
Outputs
SOS
—
—
—
—
—
—
–30
–40
–30
dB
dB
dB
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