LMH0344_08 Datasheet, PDF (3/8 Pages) National Semiconductor (TI) – 3 Gbps HD/SD SDI Adaptive Cable Equalizer

AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3).
Symbol Parameter
Conditions
Reference
Min
BR_SDI Input Data Rate
SDI, SDI
143
Jitter for various Cable Lengths 270 Mbps, Belden 1694A,
0-400 meters (Note 6)
1.485 Gbps, Belden 1694A,
0-140 meters (Note 6)
2.97 Gbps, Belden 1694A,
0-120 meters (Note 6)
t_r,t_f
Output Rise Time, Fall Time
20% – 80%, (Note 4)
Mismatch in Rise/Fall Time
(Note 4)
SDO, SDO
t_OS
R_OUT
RL_IN
Output Overshoot
Output Resistance
Input Return Loss
(Note 4)
single-ended
5 MHz - 1.5 GHz, (Note 7)
SDI, SDI
15
1.5 GHz - 3.0 GHz, (Note 7)
10
R_IN
Input Resistance
C_IN
Input Capacitance
single-ended
single-ended
Typ
Max Units
2970 Mbps
0.2
UI
0.25
UI
0.3
UI
60
130
ps
2
15
ps
1
5
%
50
Ω
dB
dB
1.3
kΩ
1
pF
Note 1: "Absolute Maximum Ratings" are those parameter values beyond which the life and operation of the device cannot be guaranteed. The stating herein of
these maximums shall not be construed to imply that the device can or should be operated at or beyond these values. The table of "Electrical Characteristics"
specifies acceptable device operating conditions.
Note 2: 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.
Note 3: Typical values are stated for V_CC = +3.3V and T_A = +25°C.
Note 4: Specification is guaranteed by characterization.
Note 5: This specification is for 0m cable only.
Note 6: Based on characterization data over the full range of recommended operating conditions of the device. Jitter is measured in accordance with SMPTE
RP 184, SMPTE RP 192, and the applicable serial data transmission standard: SMPTE 424M, SMPTE 292M, or SMPTE 259M.
Note 7: Input return loss is dependent on board design. The LMH0344 exceeds this specification on the SD344 evaluation board with a return loss network
consisting of an 8.2 nH inductor in parallel with a 0.5 pF capacitor in parallel with the 75Ω series resistor on the input.
Typical Performance Characteristics
After Equalization: 120m of Belden 1694A with
2.97 Gbps PRBS
After Equalization: 120m of Belden 1694A with
2.97 Gbps Pseudo Matrix Pathological
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