T8531A/T8532 Agere Systems, Inc., T8531A/T8532 Datasheet - Page 26

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

Codec Chip Set
Electrical Characteristics
dc Characteristics
Table 10. T8532 Power Dissipation
Table 11. T8531A Power Dissipation
* Powerup current exhibits a negative temperature coefficient.
Transmission Characteristics
Table 12. Gain and Dynamic Range
26
Powerdown Current
Powerup Current
Powerdown Current
Powerup Current
Absolute
Transmit Gain
Transmit Gain
Levels
Absolute
Accuracy
Variation with
Programmed
Gain
Parameter
Parameter
Parameter
Symbol
GXAG
GXA
GAL
(continued)
Symbol
Symbol
IDD0
IDD1
IDD0
IDD1
(T8532 TX gain =12.04 dB; T8531A gain = –1.65 dB)
(T8532 RX gain = –12.04 dB; T8531A gain = 0.21 dB)
0 dBm0 test level, measured deviation of digital code
from ideal 0 dBm0 level at OSDX[1:0] digital outputs,
mum to minimum, calculated deviation from the pro-
(T8532 RX gain = 6.02 dB; T8531A gain = 0.21 dB)
Measured transmit gain over the range from maxi-
(T8532 TX gain = 0 dB; T8531A gain = –1.65 dB)
OSCK and OSFS present, 8 channels powered down
SCK and SFS present, 16 channels powered up and
OSCK and OSFS present, 8 channels powered up,
Transmit gain programmed for maximum
SCK and SFS present, 16 channels powered down
(continued)
grammed gain relative to GXA at 0 dB:
Maximum 0 dBm0 levels (1.02 kHz):
Minimum 0 dBm0 levels (1.02 kHz):
VRP—VRN (decoder milliwatt)
with transmit gain set to 0 dB:
Termination impedance off
Termination impedance off
VTX (encoder milliwatt)
–40 C to +85 C
Test Conditions
0 C to 85 C
VRP—VRN
V
Test Conditions
normal operation
DD
Test Conditions
VTX
and inactive
= 5 V
active
–0.25
–0.30
–0.1
Min
—
—
—
—
Min
Min
—
—
—
—
557.0
548.0
2.23
4.38
Typ
Agere Systems Inc.
—
—
—
Typ
Typ
85*
50
61
9
Max
0.25
0.30
May 2001
0.1
Max Unit
Max
100
—
—
—
—
60
12
88
mVp-p
mVp-p
Vp-p
Vp-p
Unit
Unit
mA
mA
mA
mA
dB
dB
dB