82555 — Networking Silicon

44 Datasheet

11.3.3 100BASE-TX Voltage/Current DC Characteristics

VIDA10 Input differential accept voltage 5 MHz
f
10 MHz ±585 ±3100 mVP
VIDR10 Input differential reject voltage 5 MHz
f
10 MHz ±300 mVP
VICM10 Input common mode voltage VCC/2 V
VOD10 Output differential voltage RL = 100 b
RBIAS10 = 768 ±2.2 ±2.8 V
ICCT10cLine driver supply RBIAS10 = 768 110 mA
ICC10dCurrent on all VCC pins 120 mA
ICCT10TOT Total supply current 230 mA
LILA10eLeakage on analog pins 20 mA
a. This value is measured across the receive differential pins, RDP and RDN.
b. RL is th e 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. Cu rrent is measured on all VCC pins at VCC = 5.25 V.
e. T he analog pins are: TDP, TDN, RDP, RDN, RBIAS10, and RBIAS10 0.
Symbol Parameter Description Condition Min Typ Max Units
Figure 11. RBIAS10 Resistance versus ICCT10
805
768
735
105mA 110mA 115mA
Icct10Rbias10
Symbol Parameter Description Condition Min Typ Max Units
RID100 Input differential resistance
DC
VRDP = (VCC/2) +
0.5 V
VRDN = (VCC/2) -
0.5 V
10 K
VIDA100 Input differential accept voltage ±500 mVP
VIDR100 Input differential reject voltage ±100 mVP
VICM100 Input common mode voltage VCC/2 V
VOD100aOutput differential voltage RBIAS100 = 634 ±0.95 ±1.00 ±1.05 VP
ICCT100bLine driver supply RBIAS100 = 634 40 mA