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LTC1440 - 典型应用图例：

LTC1440 - 封装图解：

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LTC1440 - LTC1440是具有基准的超低功率单/双通道比较器

LTC1440是LINEAR凌力尔特公司的一款基准 + 比较器或放大器产品，LTC1440是LTC1440是具有基准的超低功率单/双通道比较器，本站介绍了LTC1440的封装应用图解、特点和优点、功能等，并给出了与LTC1440相关的LINEAR元器件型号供参考。

LTC1440 - LTC1440是具有基准的超低功率单/双通道比较器 - 基准 + 比较器或放大器 - 信号调理 - 凌力尔特

LTC1440 - 具有基准的超低功率单/双通道比较器

LTC1440 - 具有基准的超低功率单/双通道比较器 - Linear Technology（凌力尔特）

功能描述

The LTC1440/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, programmable 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.

特点

Ultralow Quiescent Current: 2.1μA Typ (LTC1440)

Reference Output Drives 0.01μF 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)

应用

Battery-Powered System Monitoring

Threshold Detectors

Window Comparators

Oscillator Circuits

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1440CDD	3x3 DFN-8	C	$2.36	$1.65
LTC1440CDD#PBF	3x3 DFN-8	C	$2.36	$1.65
LTC1440CDD#TR	3x3 DFN-8	C		$1.75
LTC1440CDD#TRPBF	3x3 DFN-8	C		$1.75
LTC1440CMS8	MS-8	C	$2.15	$1.65
LTC1440CMS8#PBF	MS-8	C	$2.15	$1.65
LTC1440CMS8#TR	MS-8	C		$1.71
LTC1440CMS8#TRPBF	MS-8	C		$1.71
LTC1440CN8	N-8	C	$1.85	$1.45
LTC1440CN8#PBF	N-8	C	$1.85	$1.45
LTC1440CS8	SO-8	C	$1.85	$1.45
LTC1440CS8#PBF	SO-8	C	$1.85	$1.45
LTC1440CS8#TR	SO-8	C		$1.51
LTC1440CS8#TRPBF	SO-8	C		$1.51
LTC1440IDD	3x3 DFN-8	I	$2.64	$1.85
LTC1440IDD#PBF	3x3 DFN-8	I	$2.64	$1.85
LTC1440IDD#TR	3x3 DFN-8	I		$1.95
LTC1440IDD#TRPBF	3x3 DFN-8	I		$1.95
LTC1440IMS8	MS-8	I	$2.64	$1.85
LTC1440IMS8#PBF	MS-8	I	$2.64	$1.85
LTC1440IMS8#TR	MS-8	I		$1.91
LTC1440IMS8#TRPBF	MS-8	I		$1.91
LTC1440IN8	N-8	I	$2.20	$1.70
LTC1440IN8#PBF	N-8	I	$2.20	$1.70
LTC1440IS8	SO-8	I	$2.20	$1.70
LTC1440IS8#PBF	SO-8	I	$2.20	$1.70
LTC1440IS8#TR	SO-8	I		$1.76
LTC1440IS8#TRPBF	SO-8	I		$1.76

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