LMH7322_14 Datasheet, PDF (1/33 Pages) Texas Instruments – Dual 700 ps High Speed Comparator with RSPECL Outputs

LMH7322
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SNOSAU8H – MARCH 2007 – REVISED MAY 2011
LMH7322 Dual 700 ps High Speed Comparator with RSPECL Outputs
Check for Samples: LMH7322
FEATURES
1
•2 (V_CCI = +5V, V_CCO = +5V)
• Propagation Delay 700 ps
• Overdrive Dispersion 20 mV-1V 75 ps
• Fast Rise and Fall Times 160 ps
• Wide Supply Range 2.7V to 12V
• Input Common Mode Range Extends 200 mV
Below Negative Rail
• Adjustable Hysteresis
• (RS)PECL Outputs (see Application
Information)
• (RS)PECL Latch Inputs (see Application
Information)
DESCRIPTION
The LMH7322 is a dual comparator with 700 ps
propagation delay, low dispersion of 75 ps and an
input voltage range that extends from V_CC-1.5V to
V_EE. The devices can be operated from a wide supply
voltage range of 2.7V to 12V. The adjustable
hysteresis adds flexibility and prevents oscillations.
Both the outputs and latch inputs of the LMH7322 are
RSPECL compatible. When used in combination with
a V_CCO supply voltage of 2.5V the outputs have LVDS
compatible levels.
The LMH7322 is available in a 24-pin WQFN
package.
APPLICATIONS
• Digital Receivers
• High-Speed Signal Restoration
• Zero-Crossing Detectors
• High-Speed Sampling
• Window Comparators
• High-Speed Signal Triggering
Typical Application
5V
+
ECL driver
Coupled
transmission line
Line Termination
IN+
IN- _1/2
LMH 7322
RHYS
Q
RS-PECL
OUTPUT
VOH = 3.9V
VOL = 3.5V
Q
RT RT
VT = VCCO-2V
or
VT = VEE
VT
10k
LE levels referred to VCCO
-5.2V
+
Figure 1. (RS)ECL to RSPECL Converter
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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