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T8535B Datasheet(PDF) 28 Page - Agere Systems

Part No. T8535B
Description  T8535B/T8536B Quad Programmable Codec
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Maker  AGERE [Agere Systems]
Homepage  http://www.agere.com
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T8535B Datasheet(HTML) 28 Page - Agere Systems

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28
Agere Systems Inc.
Preliminary Data Sheet
September 2001
T8535B/T8536B Quad Programmable Codec
Electrical Characteristics (continued)
Analog Interface
The following specifications pertain to the analog SLIC interface for each channel.
Table 11. Analog Interface
Table 12. Power Dissipation
Power measurements are made at BCLK = 2.048 MHz, DCLK = 2.048 MHz, no inputs from serial interface, inter-
face latches set as outputs, and outputs unloaded.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Input Resistance
RVFxI
0.25 < VIN < (VDDX
− 0.25) V.
100
300
k
dc Input Voltage
VVFxI
Relative to ground.
Signal should be capacitively
coupled to VFXI.
1.8
2.0
2.2
V
Load Resistance at VFROP and VFRON
(differential)
RL
5-8881F
7.5
k
Output Resistance
RO
Digital input code correspond-
ing to idle PCM code (
µ-law).
—2
10
Output Offset Voltage Between VFROP
and VFRON
VOS
Digital input code correspond-
ing to idle PCM code (
µ-law).
−100
0
100
mV
Output Offset Voltage Between VFROP
and VFRON, Standby Mode
VOSS
RL = 100 k
Ω.
−20
0
20
mV
Common-mode Output Voltage, Active
Mode
VOCM
Digital input code correspond-
ing to alternating ± zero
µ-law
PCM code.
—2.0
V
Common-mode Output Voltage, Standby
Mode
VOCMS
1.7
2.0
2.3
V
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
All Channels in Standby, Dissipation for One Channel
IDDS
22
28
mW
One Channel Active, Dissipation for Active Channel
IDD1
225
mW
Four Channels Active, Dissipation for One Channel
IDD1
——
90
125
mW
RL
RL
RL
RL


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