LMH7220_0805 Datasheet, PDF (1/20 Pages) National Semiconductor (TI) – High Speed Comparator with LVDS Output

May 29, 2008
LMH7220
High Speed Comparator with LVDS Output
General Description
The LMH7220 is a high speed, low power comparator with an
operating supply voltage range of 2.7V to 12V. The LMH7220
has a differential, LVDS output, driving 325 mV into a 100Ω
symmetrical transmission line. The LMH7220 has a 2.9 ns
propagation delay and 0.6 ns rise and fall times while the
supply current is only 6.8 mA at 5V (load current excluded).
The LMH7220 inputs have a voltage range that extends 200
mV below ground, allowing ground sensing applications. The
LMH7220 is available in both the 6-Pin TSOT and SC-70
packages. These packages are ideal where space is a critical
item.
Features
(V_S = 5V T_A = 25°C, Typical values unless otherwise speci-
fied)
■ ^{Propagation delay @ 100 mV overdrive}
2.9 ns
■ ^{Rise and fall times}
0.6 ns
■ ^{Supply voltage}
2.7V to 12V
■ ^{Supply current}
6.8 mA
■ ^{Temperature range}
−40°C to 125°C
■ ^{LVDS output}
Applications
■ ^{Acquisition trigger}
■ ^{Fast differential line receiver}
■ ^{Pulse height analyzer}
■ ^{Peak detector}
■ ^{Pulse width modulator}
■ ^{Remote threshold detection}
■ ^{Oscilloscope triggering}
Typical Schematic
20137603
© 2008 National Semiconductor Corporation 201376
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