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參數(shù)資料
| 型號： | LTC1540IS8#TR |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR 2% VOLT REF 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 帶電壓基準(zhǔn) |
| 元件數(shù)： | 1 |
| 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）： | 12mV @ 5V |
| 電流 - 靜態(tài)（最大值）： | 710nA |
| CMRR, PSRR（標(biāo)準(zhǔn)）： | 80dB CMRR，80dB PSRR |
| 傳輸延遲（最大）： | 60µs |
| 磁滯： | 50mV |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 安裝類型： | 表面貼裝 |
| 包裝： | 帶卷 (TR) |
1
LTC1540
sn1540 1540fas
APPLICATIO S
U
DESCRIPTIO
U
FEATURES
TYPICAL APPLICATIO
U
Nanopower Comparator
with Reference
V +
R1
4.32M
1%
R2
3M
1%
3.3V
V –
21
7
8
GND
OUT
LTC1540
1540 TA01
IN+
IN–
HYST
REF
3
4
5
6
–
+
TEMPERATURE (°C)
–40
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
20
60
1540 TA02
–20
0
40
80
100
SUPPLY
CURRENT
(
A)
V+ = 5V
V– = GND = 0V
The LTC
1540 is an ultralow power, single comparator
with built-in reference. The comparator’s features
include less than 0.6A supply current over the commer-
cial temperature range, a 1.182V ±2% reference, pro-
grammable hysteresis and TTL/CMOS outputs that sink
and source current. The reference output can drive a
bypass capacitor of up to 0.01F without oscillation.
The comparator operates from a single 2V to 11V supply
or a dual ±1V to ±5.5V supply. Comparator hysteresis is
easily programmed by using two resistors and the HYST
pin. Each comparator’s input operates from the negative
supply to within 1.3V of the positive supply. The compara-
tor output stage can continuously source up to 40mA. By
eliminating the cross-conducting current that normally
occur when the comparator changes logic states, power
supply glitches are eliminated.
The LTC1540 is available in the 8-pin MSOP and SO
packages. For space limited applications, the LTC1540 is
available in a 3mm x 3mm low profile (0.8mm) dual fine-
pitch leadless package (DFN).
Nanopower 2.9V VCC Threshold Detector
LTC1540 Supply Current vs Temperature
■ Ultralow Quiescent Current: 0.3
A Typ
■ Reference Output Drives 0.01
F Capacitor
■ Adjustable Hysteresis
■ Available in 3mm x 3mm x 0.8mm DFN Package
■ Wide Supply Range: 2V to 11V
■ Input Voltage Range Includes the Negative Supply
■ Reference Output Sources Up to 1mA
■ TTL/CMOS Compatible Outputs
■ 60s Propagation Delay with 10mV Overdrive
■ No Crowbar Current
■ 40mA Continuous Source Current
■ Pin Compatible with LTC1440, MAX921, MAX931
, LTC and LT are registered trademarks of Linear Technology Corporation.
■ Battery-Powered System Monitoring
■ Threshold Detectors
■ Window Comparators
■ Oscillator Circuits
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