AD8611_15 Datasheet, PDF (1/20 Pages) Analog Devices – Single-Supply Comparators

FEATURES
4 ns propagation delay at 5 V
Single-supply operation: 3 V to 5 V
100 MHz input
Latch function
APPLICATIONS
High speed timing
Clock recovery and clock distribution
Line receivers
Digital communications
Phase detectors
High speed sampling
Read channel detection
PCMCIA cards
Zero-crossing detector
High speed analog-to-digital converter (ADC)
Upgrade for LT1394 and LT1016 designs
GENERAL DESCRIPTION
The AD8611/AD8612 are single and dual 4 ns comparators
with latch function and complementary output. The latch is not
functional if VCC is less than 4.3 V.
Fast 4 ns propagation delay makes the AD8611/AD8612 good
choices for timing circuits and line receivers. Propagation delays
for rising and falling signals are closely matched and tracked over
temperature. This matched delay makes the AD8611/AD8612
good choices for clock recovery because the duty cycle of the
output matches the duty cycle of the input.
Ultrafast, 4 ns
Single-Supply Comparators
AD8611/AD8612
PIN CONFIGURATIONS
V+ 1
8 QA
IN+ 2 AD8611 7 QA
IN– 3 TOP VIEW 6 GND
V– 4 ^{(Not to Scale)} 5 LATCH
Figure 1. 8-Lead Narrow Body SOIC
(R-8)
V+ 1
IN+ 2
IN– 3
V– 4
AD8611
TOP VIEW
(Not to Scale)
8 QA
7 QA
6 GND
5 LATCH
Figure 2. 8-Lead MSOP
(RM-8)
QA 1
QA 2
GND 3
LEA 4
V– 5
INA– 6
INA+ 7
14 QB
AD8612
TOP VIEW
(Not to Scale)
13 _QB
12 GND
11 LEB
10 V+
9 INB–
8 INB+
Figure 3. 14-Lead TSSOP
(RU-14)
The AD8611 has the same pinout as the LT1016 and LT1394,
with lower supply current and a wider common-mode input
range, which includes the negative supply rail.
The AD8611/AD8612 are specified over the industrial temper-
ature range (−40°C to +85°C). The AD8611 is available in both
8-lead MSOP and narrow 8-lead SOIC surface-mount packages.
The AD8612 is available in a 14-lead TSSOP surface-mount
package.
Rev. A
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