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參數(shù)資料
| 型號： | LTC1842CS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | Ultralow Power Dual Comparators with Reference |
| 中文描述： | DUAL COMPARATOR, 10000 uV OFFSET-MAX, 5000 ns RESPONSE TIME, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 249K |
| 代理商： | LTC1842CS8 |
7
LTC1841/LTC1842/LTC1843
APPLICATIO
S I
FOR
ATIO
U
The LTC1841/LTC1842/LTC1843 are dual micropower
comparators with a built-in 1.182V reference (LTC1842/
LTC1843). Features include programmable hysteresis,
wide supply voltage range (2V to 11V) and the ability for
the reference to drive up to a 0.01
μ
F capacitor without
oscillation. The comparators’ open-drain outputs can typi-
cally sink greater than 20mA and the supply current
glitches that normally occur when switching logic states
have been eliminated.
W
U
U
Power Supplies
The comparators operate from a single 2V to 11V (2.5V to
11V for LTC1842/LTC1843) or dual
±
1V to
±
5.5V supply
(
±
1.25V to
±
5.5V for LTC1842/LTC1843). If the reference
output is required to source more than 1mA or the supply
source impedance is high, V
+
should be bypassed with a
0.1
μ
F capacitor.
Comparator Inputs
The comparators’ input can swing from the negative
supply V
–
to within 1.3V (max) of the positive supply V
+
.
The input can be forced 300mV below V
–
or above V
+
without damage and the typical input leakage current is
only
±
10pA.
Comparator Outputs
Each comparator output is an open-drain pull-down to V
–
typically capable of sinking greater than 20mA. The low
output leakage current while in three-state mode allows a
high value pull-up resistor to be used. The open-drain
outputs can be wire OR-ed or used in level shifting
applications.
Voltage Reference
The internal bandgap reference has an output voltage of
1.182V referenced to V
–
. The reference accuracy is 1.5%
from –40
°
C to 85
°
C. It can typically source greater than
1mA and sink up to 10
μ
A with a 5V supply. The reference
can drive a bypass capacitor of up to 0.01
μ
F without
oscillation. By inserting a series resistor, capacitance
values up to 100
μ
F can be used (Figure 1).
Figure 1. Damping the Reference Output
Figure 3 shows the bypassed reference output with a
square wave applied to the V
+
pin. Resistors R2 and R3 set
a 10mV hysteresis voltage band while R1 damps the
reference response. Note that the comparator output
doesn’t trip.
CAPACITOR VALUE (
μ
F)
0.001
0.1
R
)
10
0.01
0.1
10
1
1841/43 F02
1
100
Figure 2. Damping Resistance vs Bypass Capacitor Value
LTC1843
V
–
REF
R1
C1
REFERENCE
OUTPUT
1841/43 F01
Figure 2 shows the resistor value required for different
capacitor values to achieve critical damping. Bypassing
the reference can help prevent false tripping of the com-
parators by preventing glitches on V
+
or reference load
transients from disturbing the reference output voltage.
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PDF描述 |
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| LTC1842I | Ultralow Power Dual Comparators with Reference |
| LTC1842IS8 | Ultralow Power Dual Comparators with Reference |
| LTC1843C | Ultralow Power Dual Comparators with Reference |
| LTC1843CS8 | Automotive Catalog Quadruple 2-Input Positive-NAND Gate 14-TSSOP -40 to 85 |
| LTC1843 | Ultralow Power Dual Comparators with Reference(帶電壓基準(zhǔn),超低功耗,雙路比較器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1842CS8#PBF | 功能描述:IC COMP ULTLOPWR W/REF DUAL8SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，開路集電極，TTL 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:7mV @ 5V 電流 - 輸入偏壓（最小值）:0.25µA @ 5V 電流 - 輸出（標(biāo)準(zhǔn)）:84mA @ 5V 電流 - 靜態(tài)（最大值）:120µA CMRR, PSRR（標(biāo)準(zhǔn)）:- 傳輸延遲（最大）:600ns 磁滯:- 工作溫度:-40°C ~ 85°C 封裝/外殼:SC-74A，SOT-753 安裝類型:表面貼裝 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:1268 (CN2011-ZH PDF) 其它名稱:*LMV331M5*LMV331M5/NOPBLMV331M5CT |
| LTC1842CS8#TR | 功能描述:IC COMPARATOR DUAL ULT LP 8SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標(biāo)準(zhǔn)包裝:25 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:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
| LTC1842CS8#TRPBF | 功能描述:IC COMP ULTLOPWR W/REF DL 8SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標(biāo)準(zhǔn)包裝:25 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:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
| LTC1842IS8 | 功能描述:IC COMP ULTLOPWR W/REF DUAL8SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標(biāo)準(zhǔn)包裝:25 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:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
| LTC1842IS8#PBF | 功能描述:IC COMP ULTLOPWR W/REF DL 8SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標(biāo)準(zhǔn)包裝:25 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:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
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