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參數(shù)資料
| 型號： | LTC1442IN8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Aluminum Electrolytic Capacitor; Capacitor Type:High Temperature; Voltage Rating:50VDC; Capacitor Dielectric Material:Aluminum Electrolytic; Operating Temperature Range:-55 C to +105 C; Capacitance:100uF RoHS Compliant: No |
| 中文描述： | DUAL COMPARATOR, 10000 uV OFFSET-MAX, 14000 ns RESPONSE TIME, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 268K |
| 代理商： | LTC1442IN8 |
8
LTC1440/LTC1441/LTC1442
APPLICATIO
S I
FOR
ATIO
U
W
U
U
V
+
R1
430
R2
10k
C1
1
μ
F
5V
TO
8V
OUT
V
–
2
1
7
8
GND
LTC1440
1440/1/2 F03a
IN
+
IN
–
HYST
REF
3
4
5
6
R3
2.4M
–
+
Figure 3a. Reference Transient Response Test Circuit
2ms/DIV
1440/1/2 F03b
8V
V
+
5V
V
REF
OUT
Hysteresis
Hysteresis can be added to the LTC1440 by connecting a
resistor (R1) between the REF and HYST pins and a
second resistor (R2) from HYST to V
–
(Figure 4).
The difference between the upper and lower threshold
voltages, or hysteresis voltage band (V
HB
), is equal to twice
the voltage difference between the REF and HYST pins.
When more hysteresis is added, the upper threshold
increases the same amount as the low threshold de-
creases. The maximum voltage allowed between REF and
HYST pins is 50mV, producing a maximum hysteresis
voltage band of 100mV. The hysteresis band could vary by
2
up to 15%. If hysteresis is not wanted, the HYST pin
should be shorted to REF. Acceptable values for I
REF
range
from 0.1
μ
A to 5
μ
A. If 2.4M is chosen for R2, then the value
of R1 is equal to the value of V
HB
.
Figure 5. Glitch-Free Level Detector with Hysteresis
V
+
R5
430
5%
C1
1
μ
F
R3
15k
1%
OUT
V
–
2
1
7
5V
V
IN
8
GND
LTC1440
1440/1/2 F05
IN
+
IN
–
HYST
REF
3
4
5
6
–
+
R2
3.4M
1%
R1
1.18M
1%
R4
2.4M
1%
6
R2
HYST
V
–
REF
5
R1
1440/1/2 F04
LTC1440
2
I
REF
R1 =
V
HB
(2)(I
REF
)
(
R2 =
I
REF
1.182V –
)
V
HB
2
Figure 4. Programmable Hysteresis
Level Detector
The LTC1440 is ideal for use as a micropower level
detector as shown in Figure 5. R1 and R2 form a voltage
divider from V
IN
to the noninverting comparator input. R3
and R4 set the hysteresis voltage, and R5 and C1 bypass
the reference output. The following design procedure can
be used to select the component values:
1. Choose the V
IN
voltage trip level, in this example 4.65V.
Figure 3b. Reference and Comparator Output
Transient Response
相關PDF資料 |
PDF描述 |
|---|---|
| LTC1440IS8 | Ultralow Power Single/Dual Comparator with Reference |
| LTC1440 | Ultralow Power Single/Dual Comparator with Reference |
| LTC1440CMS8 | Ultralow Power Single/Dual Comparator with Reference |
| LTC1440CN8 | Ultralow Power Single/Dual Comparator with Reference |
| LTC1440CS8 | Ultralow Power Single/Dual Comparator with Reference |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1442IN8#PBF | 功能描述:IC COMP W/REF LP DUAL 8-DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標準）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標準）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LTC1442IS8 | 功能描述:IC COMP W/REF LP DUAL 8-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標準）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標準）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LTC1442IS8#PBF | 功能描述:IC COMP W/REF LP DUAL 8-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標準包裝: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（標準）:84mA @ 5V 電流 - 靜態(tài)（最大值）:120µA CMRR, PSRR（標準）:- 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) 產品目錄頁面:1268 (CN2011-ZH PDF) 其它名稱:*LMV331M5*LMV331M5/NOPBLMV331M5CT |
| LTC1442IS8#PBF | 制造商:Linear Technology 功能描述:Micropower Comparator IC |
| LTC1442IS8#TR | 功能描述:IC COMP SGL LP 1.182V REF 8SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標準）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標準）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
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