參數資料
型號: LTC1540IS8#PBF
廠商: Linear Technology
文件頁數: 1/12頁
文件大?。?/td> 0K
描述: IC COMP NANOPOWER W/REF 8-SOIC
標準包裝: 100
類型: 帶電壓基準
元件數: 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(標準): 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: 管件
產品目錄頁面: 1324 (CN2011-ZH PDF)
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.
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