LTC1444IS Datasheet

IC型號：
LTC1444IS
PDF描述：
Ultralow Power Quad Comparators with Reference
文件大?。?/label>
179.70KB
PDF頁數(shù)：
12頁
芯片廠家：
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LTC1443/LTC1444/LTC1445

Ultralow Power Quad

Comparators with Reference

FEATURES

DESCRIPTIO

廬

Ultralow Quiescent Current: 8.5

碌

A Max

Wide Supply Range

Single: 2V to 11V

Dual:

鹵1V

鹵5.5V

Input Voltage Range Includes the Negative Supply

Reference Output Drives 0.01

碌

F Capacitor

Adjustable Hysteresis (LTC1444/LTC1445)

TTL/CMOS Compatible Outputs

Propagation Delay: 12碌s (Typ) (10mV Overdrive)

No Crowbar Current

40mA Continuous Source Current

Pin Compatible Upgrades for MAX924 (LTC1443)

The LTC 1443/LTC1444/LTC1445 are ultralow power quad

comparators with a built-in reference. The comparators

feature less than 8.5碌A(chǔ) supply current over temperature,

an internal reference (1.182V

鹵1%

for LTC1443 or 1.221V

鹵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 0.01碌F without oscillation.

The comparators operate from a single 2V to 11V supply

or a dual

鹵1V

鹵5.5V

supply (LTC1443). Comparator

hysteresis is easily programmable using two resistors and

the HYST pin (LTC1444/LTC1445). Each comparator鈥檚

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

happens when the comparator changes logic states, power

supply glitches are eliminated.

The LTC1443/LTC1444/LTC1445 are available in the

16-pin SO and PDIP packages.

, LTC and LT are registered trademarks of Linear Technology Corporation.

APPLICATIO S

Battery-Powered System Monitoring

Threshold Detectors

Window Comparators

Oscillator Circuits

TYPICAL APPLICATIO

3.4M

TO 8V

Reference Settling Test Circuit

5 IN A

2mV/DIV

OUT

REF

4 IN A

鈥?/div>

LTC1445

鈥?/div>

OUT

2ms/DIV

LTC1443/1444/1445 鈥?TA02

14 HYST

1.21M

10k

2.4M

8 REF

430鈩?/div>

1.0碌F

LTC1443/44/45 鈥?TA01

Reference Settling

數(shù)據(jù)列表
LTC1443-45
標(biāo)準(zhǔn)包裝
50
類別
集成電路 (IC)
家庭
線性 - 比較器
系列
-
類型
帶電壓基準(zhǔn)
元件數(shù)
4
輸出類型
CMOS，開路漏極，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 - 輸入偏壓（最小值）
-
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
管件

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