Datasheet

LMH0384
www.ti.com SNLS308F –APRIL 2009–REVISED APRIL 2013
DC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified
(1) (2)
.
Symbol Parameter Conditions Reference Min Typ Max Units
V
IH
Input Voltage High Level Logic Inputs 2.0 V
CC
V
V
IL
Input Voltage Low Level V
EE
0.8 V
V
SDI
Input Voltage Swing 0m cable length
(3)
SDI, SDI 720 800 950 mV
P−P
V
CMIN
Input Common Mode Voltage 1.75 V
V
SSP-P
Differential Output Voltage, P-P 100Ω load, default values
(4)
, SDO, SDO 500 700 900 mV
P-P
Figure 1
V
OD
Differential Output Voltage 250 350 450 mV
ΔV
OD
Change in Magnitude of V
OD
for
50 mV
Complimentary Output States
V
OS
Offset Voltage 1.125 1.25 1.375 V
ΔV
OS
Change in Magnitude of V
OS
for
50 mV
Complimentary Output States
I
OS
Output Short Circuit Current 30 mA
MUTE
REF
DC Voltage (floating) MUTE
REF
1.3 V
MUTE
REF
Range 0.8 V
V
OH
Output Voltage High Level I
OH
= -2 mA CD, MISO 2.4 V
V
OL
Output Voltage Low Level I
OL
= +2 mA 0.4 V
I
CC
Supply Current Normal operation, equalizing cable
70 85 mA
< 140m (Belden 1694A)
(5)
Normal operation, equalizing cable
90 110 mA
> 140m (Belden 1694A)
Power save mode 10 14 mA
(1) Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated
referenced to V
EE
= 0 Volts.
(2) Typical values are stated for V
CC
= +3.3V and T
A
= +25°C.
(3) The LMH0384 can be optimized for different launch amplitudes via the SPI.
(4) The differential output voltage and offset voltage are adjustable via the SPI.
(5) The equalizer automatically shifts equalization stages at cable lengths less than 140m (Belden 1694A) to reduce power consumption.
This power savings is also achieved by setting Extended 3G Reach Mode = 1 via the SPI.
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