Rail-to-Rail, Fast, Low Power 2.5 V to 5.5 V,
Single-Supply TTL/CMOS Comparator
Data Sheet
FEATURES
Fully specified rail-to-rail at V
CC
= 2.5 V to 5.5 V
Input common-mode voltage from −0.2 V to V
CC
+ 0.2 V
Low glitch TTL-/CMOS-compatible output stage
40 ns propagation delay
Low power 1 mW at 2.5 V
Shutdown pin
Programmable hysteresis
Power supply rejection > 60 dB
−40°C to +125°C operation
APPLICATIONS
High speed instrumentation
Clock and data signal restoration
Logic level shifting or translation
High speed line receivers
Threshold detection
Peak and zero-crossing detectors
High speed trigger circuitry
Pulse-width modulators
Current/voltage controlled oscillators
FUNCTIONAL BLOCK DIAGRAM
06918-001
ADCMP609
NONINVERTING
INPUT
INVERTING
INPUT
Q OUTPUT
+
–
S
DN
Figure 1.
GENERAL DESCRIPTION
The ADCMP609 is a fast comparator fabricated on XFCB2, an
Analog Devices, Inc., proprietary process. These comparators
are exceptionally versatile and easy to use. Features include an
input range from V
EE
− 0.2 V to V
CC
+ 0.2 V, low noise,
TTL-/CMOS-compatible output drivers, and adjustable
hysteresis and/or shutdown inputs.
The device offers 40 ns propagation delay driving a 15 pF load
with 10 mV overdrive on 500 µA typical supply current.
A flexible power supply scheme allows the devices to operate
with a single +2.5 V positive supply and a −0.2 V to +3.0 V
input signal range up to a +5.5 V positive supply with a −0.2 V
to +5.7 V input signal range.
The TTL-/CMOS-compatible output stage is designed to drive
up to 15 pF with full rated timing specifications and to degrade
in a graceful and linear fashion as additional capacitance is
added. The input stage of the comparator offers robust
protection against large input overdrive, and the outputs do not
phase reverse when the valid input signal range is exceeded. A
programmable hysteresis feature is also provided.
The ADCMP609, available in an 8-lead MSOP package, features
a shutdown pin and hysteresis control.
Rev. C Document Feedback
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