T8531A/T8532 Agere Systems, Inc., T8531A/T8532 Datasheet - Page 28

• Manufacturer Part Number: T8531A/T8532
• Description: Multichannel Programmable Codec Chip Set
• Manufacturer: Agere Systems, Inc.

Codec Chip Set
Transmission Characteristics
Table 13. Noise (per Channel)
* Measured with a –50 dBm0 activation signal applied to VF
28
Transmit Noise,
Transmit Noise,
Receive Noise,
Receive Noise,
Noise, Single Frequency
Power Supply Rejection,
Power Supply Rejection,
Spurious Out-of-band
C-message Weighted
P-message Weighted
C-message Weighted
P-message Weighted
Transmit
Receive
Signals at the Channel
Outputs
Parameter
Symbol
PSR
PSR
SOS
N
N
N
N
N
XC
XP
RC
RP
RS
X
R
f = 0 kHz to 100 kHz, loop around measure-
oversampled data code applied at OSDR0
Digital pattern corresponding to idle PCM
0 dB receive gain, digital pattern corre-
0 dB receive gain, digital pattern corre-
code, -law, C-message weighted
sponding to idle PCM code, -law
sponding to idle PCM code, A-law
0 dBm0, 300 Hz to 3400 Hz input
(continued)
V
V
DD
DD
C-message weighted
X
ment, VTX = 0 Vrms
f = 25 kHz to 50 kHz
4600 Hz to 7600 Hz
7600 Hz to 8400 Hz
= 5.0 Vdc + 100 mVrms
= 5.0 Vdc + 100 mVrms
f = 4 kHz to 50 kHz*
I input of channel under test.
f = 4 kHz to 25 kHz
Measured on VRP
8400 Hz to 50 kHz
0 dB transmit gain
0 dB transmit gain
f = 0 kHz to 4 kHz
f = 0 kHz to 4 kHz
Test Conditions
(or OSDR1):
Min
36
30
36
40
36
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Typ
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Agere Systems Inc.
Max
–68
–75
–53
–30
–40
–30
18
13
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May 2001
dBrnC0
dBrnC0
dBm0p
dBm0p
dBm0
Unit
dBC
dBC
dBC
dBC
dBC
dB
dB
dB