LMH0384 Datasheet, PDF (7/29 Pages) National Semiconductor (TI) – 3 Gbps HD/SD SDI Extended Reach and Configurable Adaptive Cable Equalizer

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LMH0384
SNLS308G – APRIL 2009 – REVISED JUNE 2015
AC Electrical Characteristics (continued)
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified ⁽¹⁾.
PARAMETER
TEST CONDITIONS
MIN
5 MHz to 1.5 GHz⁽⁴⁾
15
RL_IN
Input Return Loss (SDI, SDI)
1.5 GHz to 3.0 GHz⁽⁴⁾
10
R_IN
Input Resistance (SDI, SDI)
single-ended
C_IN
Input Capacitance (SDI, SDI)
single-ended
TYP
MAX UNIT
dB
dB
1.3
kΩ
0.7
pF
(4) Input return loss is dependent onboard design. The LMH0384 exceeds this specification on the SD384 evaluation board with a return
loss network consisting of a 5.6 nH inductor in parallel with the 75-Ω series resistor on the input.
6.7 Timing Requirements
over operating free-air temperature range (unless otherwise noted)
f_SCK
t_PH
t_PL
t_SU
t_H
t_SSSU
t_SSH
t_SSOF
SCK Frequency
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup Time
MOSI Hold Time
SS Setup Time
SS Hold Time
SS Off Time
See Figure 2 and Figure 3
See Figure 2 and Figure 3
See Figure 2 and Figure 3
MIN
TYP
MAX UNIT
20 MHz
40
% SCK
period
40
% SCK
period
4
ns
4
ns
4
ns
4
ns
10
ns
6.8 Switching Characteristics
over operating free-air temperature range (unless otherwise noted)
t_ODZ
MISO Driven-to-Tristate Time
t_OZD
MISO Tristate-to-Driven Time
See Figure 3
t_OD
MISO Output Delay Time
MIN
TYP
MAX UNIT
15
ns
15
ns
15
ns
V_OD-
V_OD+
V_OS
V_SSP-P
80%
+ V_OD
80%
0V differential
V_SSP-P = (V_OD+) – (V_OD-)
20%
20%
- V_OD
t_r
t_f
Figure 1. LVDS Output Voltage, Offset, and Timing Parameters
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