Datasheet

Symbol N Symbol N+3Symbol N+1 Symbol N+2 Symbol N+4
Symbol NSymbol N-1
Symbol N-2
Symbol N-3
Symbol N-4
TXCLK
TXN
TXOUT
t
SD
LMH0040, LMH0050
LMH0070, LMH0340
SNLS271I –APRIL 2007–REVISED APRIL 2013 www.ti.com
SDI Output Characteristics — LMH0340 / LMH0040 / LMH0070 (continued)
Over supply and Operating Temperature ranges unless otherwise specified.
(1)
Symbol Parameter Condition Min Typ Max Units
Δt
t
Mismatch between rise and fall time ≥1.485 Gbps 30 ps
(2)
t
SD
Propagation Delay Latency See Figure 5 9.5 TXCLK
cycle
t
J
Peak to Peak Alignment Jitter ≥1.485 Gbps
(3)
30 50 ps
270 Mbps
(3)
100 200 ps
RL Output Return Loss — EVK Measured 5 MHz to 1485 MHz 15 20 dB
Specification
(4)
Measured 1485 MHz to 2970 10 15 dB
MHz
t
OS
Output Overshoot
(2)
2.97 Gbps 8 %
1.485 Gbps 5 %
270 Mbps 2 %
(2) Specification ensured by characterization.
(3) Measured in accordance with SMPTE RP184. 100% production tested.
(4) Output Return Loss specification applies to measurement on the EVK PCB (LMH0340 ALP Daughter Card) per SMPTE requirements.
CML Output Characteristics — LMH0050
Over supply and Operating Temperature ranges unless otherwise specified.
(1)
Symbol Parameter Condition Min Typ Max Units
V
OD
Output Voltage into 100 Ω differential load 1175 1450 mV
DR Data Rate 270 1485 Mbps
t
r
Output Rise Time 100 ps
t
f
Output Fall Time 100 ps
t
J
Peak-to-Peak Alignment Jitter 1.485 Gbps 25 50 ps
R
OUT
Output Termination Resistance Output Pin to V
DD2V5
Pin 40 50 60 Ω
(1) Typical Parameters measured at V
DD3V3
=3.3V, V
DD2V5
=2.5V, T
A
=25°C. They are for reference purposes and are not production tested.
Device Switching Characteristics
Over supply and Operating Temperature ranges unless otherwise specified.
(1)
Symbol Parameter Condition Min Typ Max Units
t
TPLD
Device Lock Time 2.97 Gbps 10 ms
1.485 Gbps 11 ms
270 Mbps 15 ms
(1) Typical Parameters measured at V
DD3V3
=3.3V, V
DD2V5
=2.5V, T
A
=25°C. They are for reference purposes and are not production tested.
Figure 5. LVDS Interface Propagation Delay
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Product Folder Links: LMH0040 LMH0050 LMH0070 LMH0340