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參數(shù)資料
| 型號： | LTC1445IS#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC COMP W/REF LOWPWR QUAD 16SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 帶電壓基準(zhǔn) |
| 元件數(shù)： | 4 |
| 輸出類型： | CMOS，TTL |
| 電壓 - 電源，單路/雙路(±)： | 2 V ~ 11 V，±1 V ~ 5.5 V |
| 電壓 - 輸入偏移（最小值）： | 10mV @ 5V |
| 電流 - 輸出（標(biāo)準(zhǔn)）： | 0.015mA @ 5V |
| 電流 - 靜態(tài)（最大值）： | 8.5µA |
| CMRR, PSRR（標(biāo)準(zhǔn)）： | 80dB CMRR，80dB PSRR |
| 傳輸延遲（最大）： | 12µs |
| 磁滯： | 50mV |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 安裝類型： | 表面貼裝 |
| 包裝： | 帶卷 (TR) |
LTC1443/LTC1444/LTC1445
1
144345fe
Typical applicaTion
DescripTion
Ultralow Power Quad
Comparators with Reference
TheLTC1443/LTC1444/LTC1445areultralowpowerquad
comparators with a built-in reference. The comparators
feature less than 8.5A supply current over temperature,
an internal reference (1.182V ±1% for LTC1443 or 1.221V
±1% for LTC1444/LTC1445), programmable hysteresis
(LTC1444/LTC1445) and TTL/CMOS output (LTC1443/
LTC1445) that sinks and sources current (open-drain
output for LTC1444). The reference output can drive a
bypass capacitor of up to 0.01F without oscillation.
The comparators operate from a single 2V to 11V supply
or a dual ±1V to ±5.5V supply (LTC1443). Comparator
hysteresis is easily programmable using two resistors and
the HYST pin (LTC1444/LTC1445). Each comparator’s
input operates from the negative supply to within 1.3V of
the positive supply. The LTC1443/LTC1445 comparator
output stage can continuously source up to 40mA. By
eliminating the cross-conducting current that normally
happenswhenthecomparatorchangeslogicstates,power
supply glitches are eliminated.
The LTC1443/LTC1444/LTC1445 are available in the
16-pin SO, PDIP and DFN packages.
FeaTures
applicaTions
n
Ultralow Quiescent Current: 8.5A Max
n
Reference Output Drives 0.01F Capacitor
n
Adjustable Hysteresis (LTC1444/LTC1445)
n
Wide Supply Range
Single: 2V to 11V
Dual: ±1V to ±5.5V
n
Input Voltage Range Includes the Negative Supply
n
TTL/CMOS Compatible Outputs
n
Propagation Delay: 12s (Typ) (10mV Overdrive)
n
No Crowbar Current
n
40mA Continuous Source Current
n
Pin Compatible Upgrades for MAX924 (LTC1443)
n
Low Profile (5mm
× 4mm × 0.8mm) DFN Package
n
Battery-Powered System Monitoring
n
Threshold Detectors
n
Window Comparators
n
Oscillator Circuits
Reference Settling Test Circuit
–
+
IN A+
5
OUT
V+
1.2V
R1
10k
R3
430
R2
2.4M
C1
1.0F
IN A–
HYST
REF
4
14
8
5V
TO 8V
144345 TA01
LTC1445
3
9
2
1.21M
1%
3.4M
1%
VIN
+–
V–
Reference Settling
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.
V+
8V
5V
VREF
144345 TA02
OUT
2ms/DIV
2mV/DIV
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