参数资料
型号: LTC1442IS8#TR
厂商: Linear Technology
文件页数: 1/16页
文件大小: 0K
描述: IC COMP SGL LP 1.182V REF 8SOIC
标准包装: 2,500
类型: 带电压基准
元件数: 2
输出类型: CMOS,TTL
电压 - 电源,单路/双路(±): 2 V ~ 11 V,±1 V ~ 5.5 V
电压 - 输入偏移(最小值): 10mV @ 5V
电流 - 输出(标准): 0.02mA @ 5V
电流 - 静态(最大值): 5.7µA
CMRR, PSRR(标准): 80dB CMRR,80dB PSRR
传输延迟(最大): 15µs
磁滞: 50mV
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
安装类型: 表面贴装
包装: 带卷 (TR)
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
(
A)
V+ = 5V
V= GND = 0V
Micropower 2.9V VCC 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 3.7
A 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 0.01
F 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
A Typ (LTC1440)
Reference Output Drives 0.01
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
12
s 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.
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