T8531TLDB Agere Systems, Inc., T8531TLDB Datasheet - Page 26

• Manufacturer Part Number: T8531TLDB
• Description: CODEC, AMuLaw CODEC, Line Card Signal Processor for CODEC Chip Set, 64TQFP
• Manufacturer: Agere Systems, Inc.

Codec Chip Set
Transmission Characteristics
Table 12. Gain and Dynamic Range (continued)
26
Transmit Gain Variation
Transmit Gain Variation
Receive Gain Absolute
Relative Gain:
Relative Phase:
Receive Gain Variation
Receive Gain Variation
Receive Gain Variation
Relative Termination
with Frequency
with Signal Level
Accuracy
VRP to VRN
VRP to VRN
with Programmed
Gain
with Frequency
with Signal Level
Impedance Gain
Parameter
Symbol
GRAG
GXAF
GRAF
GRAL
GXAL
GRA
A
—
—
T
deviation from the programmed gain relative
code, minimum gain < GR < maximum gain:
Relative to 1016 Hz, minimum gain < GX <
Relative to 1016 Hz, digital input = 0 dBm0
Measure receive gain over the range from
Receive gain programmed to 0 dB, apply
maximum to minimum setting, calculated
0 dBm0 oversampled data to OSDR0 or
maximum gain, VTX = 0 dBm0 signal,
Sinusoidal test method, reference
Sinusoidal test method reference
OSDR = –50 dBm0 to –37 dBm0
OSDR = –55 dBm0 to –50 dBm0
(continued)
OSDR = –37 dBm0 to +3 dBm0
VTX = –50 dBm0 to –37 dBm0
VTX = –55 dBm0 to –50 dBm0
VTX = –37 dBm0 to +3 dBm0
Digital input 0 dBm0 signal
Digital input 0 dBm0 signal
to GRA at 0 dB, V
RL = 100 k
OSDR1, measure VRP,
f = 4600 Hz and above
f = 4600 Hz and above
f = 300 Hz to 3000 Hz
f = 300 Hz to 3400 Hz
f = 300 Hz to 3400 Hz
path gain set to 0 dB:
f = below 3000 Hz
Test Conditions
–40 C to +85 C
level = 0 dBm0:
level = 0 dBm0:
0 dB path gain
f = 16.67 Hz
T
f = 3140 Hz
f = 3380 Hz
f = 3860 Hz
f = 3140 Hz
f = 3380 Hz
f = 3860 Hz
f = 200 Hz
0 to 85 C
Z
f = 40 Hz
f = 50 Hz
f = 60 Hz
= 600
—
differential:
DD
= 5 V
–0.125
–0.735
–0.125
–0.735
–0.57
–0.25
–0.50
–0.25
–0.30
–0.01
–0.25
–0.57
–0.25
–0.50
–1.8
–1.4
–0.1
–1.4
–0.2
Min
—
—
—
—
—
—
—
—
–0.550
–0.550
–10.7
–0.5
0.01
–9.9
Typ
–50
–38
–44
–45
0.04
0.04
0.04
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Agere Systems Inc.
February 2002
0.125
0.125
0.015
–8.98
0.125
0.125
0.015
–8.98
Max
0.25
0.50
0.25
0.30
0.01
0.25
0.25
0.50
–30
–26
–30
–30
–32
–28
1.4
0.1
1.4
0.2
0
Unit
Deg
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB