Rail-to-Rail, Very Fast, 2.5 V to 5.5 V,
Single-Supply LVDS Comparators
ADCMP604/ADCMP605
FEATURES
FUNCTIONAL BLOCK DIAGRAM
V
CCO
Fully specified rail to rail at VCC = 2.5 V to 5.5 V
Input common-mode voltage from −0.2 V to VCC + 0.2 V
Low glitch LVDS-compatible output stage
1.6 ns propagation delay
37 mW at 2.5 V
Shutdown pin
V
CCI
(ADCMP605 ONLY)
V
NONINVERTING
INPUT
P
Q OUTPUT
Q OUTPUT
ADCMP604/
ADCMP605
LVDS
Single-pin control for programmable hysteresis and latch
Power supply rejection > 60 dB
V
INVERTING
INPUT
N
−40°C to +125°C operation
LE/HYS INPUT
APPLICATIONS
(ADCMP605
ONLY)
S
INPUT
DN
High speed instrumentation
Clock and data signal restoration
Logic level shifting or translation
Pulse spectroscopy
Figure 1.
High speed line receivers
Threshold detection
Peak and zero-crossing detectors
High speed trigger circuitry
Pulse-width modulators
Current-/voltage-controlled oscillators
Automatic test equipment (ATE)
GENERAL DESCRIPTION
to +6 V input signal range. Split input/output supplies, with no
sequencing restrictions on the ADCMP605, support a wide
input signal range with greatly reduced power consumption.
The ADCMP604 and ADCMP605 are very fast comparators
fabricated on Analog Devices, Inc.’s, proprietary XFCB2
process. This family of comparators is exceptionally versatile
and easy to use. Features include an input range from VEE − 0.5
V to VCC + 0.2 V, low noise, LVDS-compatible output drivers,
and TTL/CMOS latch inputs with adjustable hysteresis and/or
shutdown inputs.
The LVDS-compatible output stage is designed to drive any
standard LVDS input. The comparator input stage offers robust
protection against large input overdrive, and the outputs do not
phase reverse when the valid input signal range is exceeded.
High speed latch and programmable hysteresis features are also
provided in a unique single-pin control option.
The devices offer 1.5 ns propagation delays with 1 ps rms
random jitter (RJ). Overdrive and slew rate dispersion are
typically less than 50 ps.
The ADCMP604 is available in a 6-lead SC70 package. The
ADCMP605 is available in a 12-lead LFCSP.
A flexible power supply scheme allows the devices to operate
with a single +2.5 V positive supply and a −0.5 V to +3.0 V
input signal range up to a +5.5 V positive supply with a −0.5 V
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.
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