LTC1440CMS8 Linear Technology, LTC1440CMS8 Datasheet

IC COMP W/REF LP SINGLE 8-MSOP

LTC1440CMS8

Manufacturer Part Number
LTC1440CMS8
Description
IC COMP W/REF LP SINGLE 8-MSOP
Manufacturer
Linear Technology
Type
with Voltage Referencer
Datasheet

Specifications of LTC1440CMS8

Number Of Elements
1
Output Type
CMOS, TTL
Voltage - Supply
2 V ~ 11 V, ±1 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1440CMS8
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC1440CMS8#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC1440CMS8#TRPBF
Quantity:
41
Part Number:
LTC1440CMS8PBF
Manufacturer:
ISOCOM
Quantity:
4 770
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
All other trademarks are the property of their respective owners.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Ultralow Quiescent Current: 2.1
Reference Output Drives 0.01
Adjustable Hysteresis (LTC1440/LTC1442)
Wide Supply Range:
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)
Battery-Powered System Monitoring
Threshold Detectors
Window Comparators
Oscillator Circuits
Single: 2V to 11V
Dual: ±1V to ±5.5V
Micropower 2.9V V
R1
1.65M
1%
R2
1.13M
1%
U
3
4
5
6
IN
IN
HYST
REF
+
V
2
CC
+
3.3V
Threshold Detector
V
+
LTC1440
7
µ
GND
U
F Capacitor
µ
1
A Typ (LTC1440)
1440 TA01
8
OUT
Comparator with Reference
Ultralow Power Single/Dual
DESCRIPTIO
The LTC
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.
LTC1440/LTC1441/LTC1442
®
1440/LTC1441/LTC1442 are ultralow power
LTC1440 Supply Current vs Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
–40
V
V
+
–20
= 5V
= GND = 0V
U
0
TEMPERATURE (°C)
20
40
60
1440/1/2 TA02
80
100
144012fd
1

Related parts for LTC1440CMS8

LTC1440CMS8 Summary of contents

Page 1

... DFN Package (LTC1440) U APPLICATIO S ■ Battery-Powered System Monitoring ■ Threshold Detectors ■ Window Comparators ■ Oscillator Circuits , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. U TYPICAL APPLICATIO Micropower 2.9V V Threshold Detector CC 3. 1.65M ...

Page 2

... GND 1 8 – – MS8 PACKAGE 8-LEAD PLASTIC MSOP = 150°C, θ 250°C/ W JMAX JA MS8 PART ORDER PART MARKING* NUMBER LTC1440CMS8 LTC1440IMS8 ORDER PART NUMBER TOP VIEW LTC1442CN8 OUT – + LTC1442CS8 LTC1442IN8 3 6 REF LTC1442IS8 – 4 HYST 5 S8 PART S8 PACKAGE ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER Power Supply + V Supply Voltage Range I Supply Current CC Comparator V Comparator Input Offset Voltage OS + – I Input Leakage Current ( ...

Page 4

LTC1440/LTC1441/LTC1442 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER Power Supply + V Supply Voltage Range I Supply Current CC Comparator V Comparator Input Offset Voltage OS + – I Input Leakage Current ( ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Comparator Response Time vs Input Overdrive 25° 100mV 3 50mV 100 – RESPONSE TIME (µs) Comparator Short-Circuit Sink Current vs ...

Page 6

LTC1440/LTC1441/LTC1442 W U TYPICAL PERFOR A CE CHARACTERISTICS Comparator Response Time vs Load Capacitance with 100mV Input Overdrive PHL PLH LOAD CAPACITANCE (nF) 6 10000 1000 80 100 ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS Comparator Output Voltage Low vs Load Current 2 25° 1.5 1.0 0 LOAD CURRENT ...

Page 8

LTC1440/LTC1441/LTC1442 W U TYPICAL PERFOR A CE CHARACTERISTICS Reference Output Voltage vs Output Load Current 1.190 1.185 1.180 1.175 1.170 1.165 1.160 1.155 0 1.5 2.0 0.5 1.0 OUTPUT LOAD CURRENT (mA) 8 SOURCE 2.5 3.0 ...

Page 9

PIN FUNCTIONS 1 LTC1440 8 OUT GND – REF – – HYST LTC1440 GND (Pin 1): Ground. Connect to V operation. – V (Pin ...

Page 10

LTC1440/LTC1441/LTC1442 U U APPLICATIONS INFORMATION LTC1440/LTC1441/LTC1442 are a family of micropower comparators with built-in 1.182V reference. Features include programmable hysteresis (LTC1440/LTC1442), wide supply voltage range (2V to 11V) and the ability of the reference to drive 0.01µF ...

Page 11

U U APPLICATIONS INFORMATION + – – HYST 10k 6 REF R3 R1 – 2.4M 430Ω 1µF Figure 3a. Reference Transient Response Test Circuit ...

Page 12

LTC1440/LTC1441/LTC1442 U U APPLICATIONS INFORMATION 2. Calculate the required resistive divider ratio. Ratio = REF IN Ratio = 1.182V/4.65V = 0.254 3. Choose the required hysteresis voltage band at the input this example 60mV. ...

Page 13

U TYPICAL APPLICATIONS 100k ® LT 1034 1.2V + 365k* 1/2 LTC1441 2N3809 – 1N914 0.033µF POLYSTYRENE 150k 10M *TRW-IRC MRT–5/+120ppm/°C LTC1440/LTC1441/LTC1442 10-Bit 30µA A/D Converter 32.768kHz 1M 5V 470k + C2 1/2 LTC1441 ...

Page 14

LTC1440/LTC1441/LTC1442 PACKAGE DESCRIPTIO 3.5 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 5.23 (.206) MIN 0.42 ± 0.038 (.0165 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT ...

Page 15

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... Li-Ion Low Battery Monitor, SOT23, 1% Accuracy SOT23, 1.4V to 18.5V Supply Range, ±2% Over Temperature www.linear.com ● +V 6.2V TO 12V LM334 2k* Q8 LT1034-1.2 + LT1034-1.2 0.47µ OUT 0kHz TO 10kHz 74C14 0.1µF 1440/1/2 TA04 LT 0806 REV D • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1996 144012fd ...

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