High Speed Comparators
High toggle rate, nanosecond propagation delay and tiny packages are the hallmarks of Linear Technology’s high speed
comparators. Packed with innovative features, our complete family of high speed comparators allows your signal conditioning,
timing and clock circuit designs to push the performance envelope.
Part
Number
LTC6752
LTC6752-1
LTC6752-2
LTC6752-3
LTC6752-4
LT1719
LT1711
LT1715
LT1712
LT1720
LT1721
#
Prop
Comps Delay
1
1
1
1
1
1
1
2
2
2
4
2.9ns
2.9ns
2.9ns
2.9ns
2.9ns
4.2ns
4.5ns
4ns
4.5ns
4.5ns
4.5ns
Toggle
Rate
280MHz
280MHz
280MHz
280MHz
280MHz
70MHz
100MHz
150MHz
100MHz
70MHz
70MHz
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Adj
Hyst
Separate Shut
Comp
Latch Supply Down Outputs
CMOS Output Logic
5V
3.3V 2.5V 1.8V Packages
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
SOT-23
SC70
MSOP8
9mm
2
QFN
SC70
SOT-23, SO8
MSOP8
MSOP10
SSOP16
9mm
2
DFN, MSOP8, SO8
SSOP16, SO16
Featured High Speed Comparators: LTC6752 Family
The LTC6752 is a family of 5 comparators, offered in
different packages with a variety of features. These
extremely fast CMOS output comparators can swing to
within 200mV of the rail with up to 8mA of load current.
Propagation delay is only 2.9ns and these comparators
can support a toggle rate up to 280MHz. They exhibit
only 4.5ps of jitter for a 100mV
P-P
100MHz sinusoidal
input. The CMOS outputs can support logic levels from
1.8V to 3.3V, and the inputs extend beyond both rails.
Several of the LTC6752 options include an internal
latch function. The internal latch retains the output state
when the LE/HYST pin is within 300mV of the negative
supply. This feature is ideal for detecting short pulses,
as shown in this simple fast event capture circuit. Once
a fast event occurs, this circuit will hold the output
until a reset occurs, allowing the interface (such as a
microprocessor) to acknowledge the event.
3.3V
INPUT 50mV TO 3.3V PULSE
MINIMUM PULSE WIDTH 10ns
3.3V
1.82k
REF
1000pF
+
V
CC
V
DD
V
EE
OUT
LTC6752-2
OUT
OUTPUT 3.3V
–
LE/HYST
SHDN
200Ω
RESET
Fast Event Capture Circuit
L,
LT, LTC, LTM, Linear Technology and the Linear logo are
registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Low Power Comparators
With supply currents starting at only 300nA, Linear Technology offers a broad line of ultralow power comparators. To achieve the
lowest possible power and footprint, most of our low power comparators include an integrated precision voltage reference. For
added design flexibility, the LTC1541 and LTC1542 also include a micropower, unity-gain stable op amp.
Part
Number
LTC1540
LTC1440
LTC1542
LTC1541
LT6703
LT6703HV
LTC1441
LTC1442
LT6700
LT6700HV
LTC1443
LTC1444
LTC1445
#
Voltage
Supply Includes
Comps Reference Current Op Amp
1
1
1
1
1
1
2
2
2
2
4
4
4
1.182V
1.182V
NONE
1.2V
400mV
400mV
NONE
1.182V
400mV
400mV
1.182V
1.221V
1.221V
0.3μA
2.1μA
5μA
5μA
6.5μA
6.5μA
3.5μA
3.5μA
6.5μA
6.5μA
5μA
5μA
5μA
l
l
l
l
l
l
Adj
Hyst
l
l
Dual
Supply
l
l
Supply
Voltage
2V to 11V
2V to 11V
2.5V to 12.6V
2.5V to 12.6V
1.4V to 18V
1.4V to 18V
2V to 11V
2V to 11V
1.4V to 18V
1.4V to 18V
2V to 11V
2V to 11V
2V to 11V
Output*
CMOS
CMOS
CMOS
CMOS
OC
≤
18V
OC
≤
36V
CMOS
CMOS
OC
≤
18V
OC
≤
36V
CMOS
CMOS
CMOS
Packages
9mm
2
DFN, MSOP8, SO8
9mm
2
DFN, MSOP8, SO8, PDIP8
9mm
2
DFN, MSOP8, SO8
9mm
2
DFN, MSOP8, SO8
4mm
2
DFN, SOT-23
4mm
2
DFN, SOT-23
SO-8, PDIP8
SO-8, PDIP8
6mm
2
DFN, SOT-23
6mm
2
DFN, SOT-23
20mm
2
DFN, SO16, PDIP16
20mm
2
DFN, SO16, PDIP16
20mm
2
DFN, SO16, PDIP16
OC = Open-Collector output. Requires an external pull-up resistor.
Featured Low Power Comparators: LT6700 Family
The LT6700 combines two micropower comparators
with a 400mV reference. Various options of the LT6700
offer unique combinations of input polarity. The open-
collector outputs can be pulled up to 18V or 36V
(depending on the option), and can sink more than
5mA over temperature. The LT6700 is an ideal choice
for a micropower “gas gauge” with <2% total threshold
error over temperature, as shown in this micropower
battery monitor circuit. This example shows a simple
2-threshold “alkaline-cell” battery monitor: the bottom
comparator goes low when battery voltage falls below
2V (1V per cell). The top comparator output goes low
when the pack voltage falls below 1.6V (0.8V per cell),
indicating that the battery pack has reached its end-of-
life voltage.
V
BATT
1.4V (MIN)
3V (NOM)
R4
1M
6
R5
1M
5
R3
1M
LT6700-3
4
COMP B
+
–
V
BATT
> 1.6V
ALKALINE
AA CELLS
+
+
R2
63.4k
V
R
= 400mV
REFERENCE
V
S
–
3
R1
261k
COMP A
1
C1
0.1μF
2
V
BATT
> 2V
+
Micropower Battery Monitor
www.linear.com/6752
n
1-800-4-LINEAR
0115A
模拟电子
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
