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82555 — Networking Silicon
Symbol
V
IDA10
V
IDR10
V
ICM10
V
OD10
c
I
CCT10
d
I
CC10
I
CCT10TOT
e
L
ILA10
a. This value is measured across the receive differential pins, RDP and RDN.
b. RL is the resistive load across the receive differential pins, RDP and RDN.
c. Transmitter current is measured with a 1:1 transformer on the center tap.
d. Current is measured on all V
e. The analog pins are: TDP, TDN, RDP, RDN, RBIAS10, and RBIAS100.
11.3.3
100BASE-TX Voltage/Current DC Characteristics
Symbol
R
ID100
V
IDA100
V
IDR100
V
ICM100
a
V
OD100
b
I
CCT100
44
Parameter Description
Input differential accept voltage
Input differential reject voltage
Input common mode voltage
Output differential voltage
Line driver supply
Current on all V
pins
CC
Total supply current
Leakage on analog pins
pins at V
= 5.25 V.
CC
CC
Rbias10
8 0 5
7 6 8
7 3 5
1 0 5 m A
Figure 11. RBIAS10 Resistance versus I
Parameter Description
Input differential resistance
Input differential accept voltage
Input differential reject voltage
Input common mode voltage
Output differential voltage
Line driver supply
Condition
Min
±585
5 MHz
f
10 MHz
5 MHz
f
10 MHz
b
RL = 100
±2.2
RBIAS10 = 768
RBIAS10 = 768
1 1 5 m A
1 1 0 m A
Condition
Min
DC
V
= (V
/2) +
RDP
CC
10
0.5 V
V
= (V
/2) -
RDN
CC
0.5 V
±500
±100
±0.95
RBIAS100 = 634
RBIAS100 = 634
Typ
Max
Units
±3100
mV
P
±300
mV
P
V
/2
V
CC
±2.8
V
110
mA
120
mA
230
mA
20
mA
Icct10
CCT10
Typ
Max
Units
K
mV
P
mV
P
V
/2
V
CC
±1.00
±1.05
V
P
40
mA
Datasheet
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