LMH0044_09 Datasheet, PDF (3/8 Pages) National Semiconductor (TI) – SMPTE 292M / 259M Adaptive Cable Equalizer

AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3).
Symbol Parameter
Conditions
Reference
Min
BR_MIN
BR_MAX
Minimum Input Data Rate
Maximum Input Data Rate
Jitter for various Cable Lengths
(with equalizer pathological)
270 Mbps, Belden 1694A,
400 meters (Note 4)
SDI, SDI
270 Mbps, Belden 8281,
280 meters (Note 4)
1.485 Gbps, Belden 1694A,
140 meters (Note 4)
1.485 Gbps, Belden 8281,
100 meters (Note 4)
1.485 Gbps, Belden 1694A,
200 meters (Note 4)
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
R_IN
C_IN
Output Overshoot
Output Resistance
Input Return Loss
Input Resistance
Input Capacitance
(Note 4)
single-ended, (Note 5)
(Note 8)
single-ended
single-ended, (Note 5)
SDI, SDI
15
Typ
Max
125
1485
0.2
0.2
0.25
0.25
0.3
100
220
2
15
1
5
50
18-20
1.3
1
Units
Mbps
Mbps
UI
UI
UI
UI
UI
ps
ps
%
Ω
dB
kΩ
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: Specification is guaranteed by design.
Note 6: The maximum input voltage swing assumes a nonstressing, DC-balance signal; specifically, the SMPTE-recommended color bar test signal. Pathological
or other stressing signals may not be used. This specification is for 0m cable only.
Note 7: Supply current depends on the amount of cable being equalized. The current is highest for short cable and decreases as the cable length is increased.
Refer to Figures 1, 2.
Note 8: Input return loss is dependent on board design. The LMH0044 meets this specification on the SD044 evaluation board from 5 MHz to 1.5 GHz.
3
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