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LTC1440CDD#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LTC1440/LTC1441/LTC1442
144012fd
APPLICATIO S
U
Ultralow Power Single/Dual
Comparator with Reference
V
+
R1
1.65M
1%
R2
1.13M
1%
3.3V
V
–
21
7
8
GND
OUT
LTC1440
1440 TA01
IN
+
IN
–
HYST
REF
3
4
5
6
–
+
TEMPERATURE (°C)
–40
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
20 60
1440/1/2 TA02
–20 0
40 80
100
SUPPLY CURRENT (µA)
V
+
= 5V
V
–
= GND = 0V
Micropower 2.9V V
CC
Threshold Detector
LTC1440 Supply Current vs Temperature
The LTC
®
1440/LTC1441/LTC1442 are ultralow power
single and dual comparators with built-in references. The
comparators feature less than 3.7µA supply current over
temperature (LTC1440), a 1.182V ±1% reference, pro-
grammable hysteresis (LTC1440/LTC1442) and TTL/CMOS
outputs that sink and source current. The reference output
can drive a bypass capacitor of up to 0.01µF without
oscillation.
The comparators operate from a single 2V to 11V supply
or a dual ±1V to ±5.5V supply (LTC1440). Comparator
hysteresis is easily programmed by using two resistors
and the HYST pin (LTC1440/LTC1442). Each comparator’s
input operates from the negative supply to within 1.3V of
the positive supply. The comparator output stage can
continuously source up to 40mA. By eliminating the
cross-conducting current that normally happens when the
comparator changes logic states, the power supply glitches
are eliminated.
The LTC1440 is available in 8-pin PDIP, SO, MSOP and
DFN packages. The LTC1441/LTC1442 are available in
8-pin PDIP and SO packages.
■
Battery-Powered System Monitoring
■
Threshold Detectors
■
Window Comparators
■
Oscillator Circuits
■
Ultralow Quiescent Current: 2.1
µ
A Typ (LTC1440)
■
Reference Output Drives 0.01
µ
F Capacitor
■
Adjustable Hysteresis (LTC1440/LTC1442)
■
Wide Supply Range:
Single: 2V to 11V
Dual: ±1V to ±5.5V
■
Input Voltage Range Includes the Negative Supply
■
TTL/CMOS Compatible Outputs
■
12µs Propagation Delay with 10mV Overdrive
■
No Crowbar Current
■
40mA Continuous Source Current
■
Pin Compatible Upgrades for MAX921/922/923
■
3mm x 3mm x 0.75mm DFN Package (LTC1440)
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
2
LTC1440/LTC1441/LTC1442
144012fd
S8 PART
MARKING
Voltage
V
+
to V
–
, V
+
to GND, GND to V
–
...........12V to – 0.3V
IN
+
, IN
–
, HYST ................. (V
+
+ 0.3V) to (V
–
– 0.3V)
REF ................................... (V
+
+ 0.3V) to (V
–
– 0.3V)
OUT (LTC1440) .............. (V
+
+ 0.3V) to (GND – 0.3V)
OUT (LTC1441/LTC1442) ... (V
+
+ 0.3V) to (V
–
– 0.3V)
Current
IN
+
, IN
–
, HYST ................................................. 20mA
REF ................................................................... 20mA
OUT .................................................................. 50mA
ABSOLUTE MAXIMUM RATINGS
W
WW
U
OUT Short-Circuit Duration (V
+
≤ 5.5V) .......Continuous
Power Dissipation.............................................. 500mW
Operating Temperature Range
LTC144XC ............................................... 0°C to 70°C
LTC144XI ........................................... – 40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Storage Temperature Range
(DD Package) ................................... –65°C to 125°C
Junction Temperature........................................... 150°C
Junction Temperature (DD Package) .................... 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
W
U
U
Consult LTC Marketing for parts specified with wider operating temperature ranges.
* The temperature grade is identified by a label on the shipping container.
(Note 1)
T
JMAX
= 150°C, θ
JA
= 130°C/ W (N8)
T
JMAX
= 150°C, θ
JA
= 175°C/ W (S8)
T
JMAX
= 150°C, θ
JA
= 250°C/ W
ORDER PART
NUMBER
LTC1440CDD
LTC1440IDD
DD8 PART
MARKING*
LBTH
ORDER PART
NUMBER
LTC1440CMS8
LTC1440IMS8
MS8 PART
MARKING*
LTBX
ORDER PART
NUMBER
LTC1440CN8
LTC1440CS8
LTC1440IN8
LTC1440IS8
S8 PART
MARKING
1440
1440
1440I
1440I
T
JMAX
= 125°C, θ
JA
= 160°C/ W (DD)
UNDERSIDE METAL CONNECTED TO V
–
(PCB CONNECTION OPTIONAL)
1
2
3
4
8
7
6
5
TOP VIEW
GND
V
–
IN
+
IN
–
OUT
V
+
REF
HYST
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
ORDER PART
NUMBER
ORDER PART
NUMBER
S8 PART
MARKING
1441
1441I
T
JMAX
= 150°C, θ
JA
= 130°C/ W (N8)
T
JMAX
= 150°C, θ
JA
= 175°C/ W (S8)
T
JMAX
= 150°C, θ
JA
= 130°C/ W (N8)
T
JMAX
= 150°C, θ
JA
= 175°C/ W (S8)
1
2
3
4
8
7
6
5
TOP VIEW
OUT A
V
–
IN A
+
IN A
–
OUT B
V
+
IN B
+
IN B
–
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
1
2
3
4
8
7
6
5
TOP VIEW
OUT A
V
–
IN A
+
IN B
–
OUT B
V
+
REF
HYST
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
LTC1441CN8
LTC1441CS8
LTC1441IN8
LTC1441IS8
LTC1442CN8
LTC1442CS8
LTC1442IN8
LTC1442IS8
1442
1442I
1
2
3
4
GND
V
–
IN
+
IN
–
8
7
6
5
OUT
V
+
REF
HYST
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TOP VIEW
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1GND
V
–
IN
+
IN
–
OUT
V
+
REF
HYST
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/
3
LTC1440/LTC1441/LTC1442
144012fd
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
+
= 5V and V
–
= GND = 0V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply
V
+
Supply Voltage Range ● 2.0 11.0 V
I
CC
Supply Current IN
+
= IN
–
+ 80mV LTC1440 0°C ≤ T
A
≤ 70°C ● 2.1 4.0 µA
HYST = REF (LTC1440/LTC1442) –40°C ≤ T
A
≤ 85°C ● 4.4 µA
LTC1441
● 3.5 5.7 µA
LTC1442 ● 3.5 5.7 µA
Comparator
V
OS
Comparator Input Offset Voltage V
CM
= 2.5V ● ±3 ±10 mV
I
IN
Input Leakage Current (IN
+
, IN
–
)V
IN
+
= V
IN
–
= 2.5V ● ±0.01 ±1.0 nA
Input Leakage Current (HYST) ● ±0.02 ±1.0 nA
V
CM
Comparator Input Common ● V
–
V
+
– 1.3V V
Mode Range
CMRR Common Mode Rejection Ratio V
–
to V
+
– 1.3V 0.1 1 mV/V
PSRR Power Supply Rejection Ratio V
+
= 2V to 11V (LTC1441) 0.1 1 mV/V
V
+
= 2.5V to 11V (LTC1440/LTC1442) 0.1 1 mV/V
NOISE Voltage Noise 100Hz to 100kHz 100 µV
RMS
V
HYST
Hysteresis Input Voltage Range LTC1440/LTC1442 ● REF – 50mV REF V
t
PD
Propagation Delay C
OUT
= 100pF Overdrive = 10mV 15 µs
Overdrive = 100mV 8 µs
V
OH
Output High Voltage I
O
= – 13mA ● V
+
– 0.4V V
V
OL
Output Low Voltage I
O
= 1.8mA LTC1440 ● GND + 0.4V V
LTC1441/LTC1442 ● V
–
+ 0.4V V
Reference
V
REF
Reference Voltage No Load LTC1440/LTC1442
0°C ≤ T
A
≤ 70°C ● 1.170 1.194 V
–40°C ≤ T
A
≤ 85°C ● 1.164 1.200 V
LTC1440 (MSOP, DFN) ● 1.164 1.200 V
I
SOURCE
Reference Output Source Current ∆V
REF
≤ 1mV (LTC1442) ● 100 µA
I
SINK
Reference Output Sink Current ∆V
REF
≤ 2.5mV (LTC1442) 10 20 µA
∆V
REF
Reference Source Current 0 ≤ I
SOURCE
≤ 2mA (LTC1440) ● 0.8 5 mV
Reference Sink Current 0 ≤ I
SINK
≤ 10µA (LTC1440) 0.5 1.5 mV
● 5mV
NOISE Voltage Noise 100Hz to 100kHz 100 µV
RMS
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC1440CDD#TRPBF

Mfr. #:
Buy LTC1440CDD#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Analog Comparators uP COMPARATOR 1% 1.182V Ref
Lifecycle:
New from this manufacturer.
Delivery:
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