参数资料
型号: LTC1542CS8#PBF
厂商: Linear Technology
文件页数: 1/12页
文件大小: 0K
描述: IC OPAMP/COMP/REF MICRPWR 8SOIC
标准包装: 100
类型: 放大器,比较器,参考
应用: GSM
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
产品目录页面: 1324 (CN2011-ZH PDF)
1
LTC1541/LTC1542
15412fd
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Micropower Op Amp,
Comparator and Reference
Daisy-Chained Control Outputs
The LTC
1541/LTC1542 combine a micropower ampli-
fier, comparator and bandgap reference (LTC1541) in an
8-pin package. The part operates from a single 2.5V to
12.6V or dual
±1.25Vto±6.3Vsupplywithatypicalsupply
current of 5
A. Both the op amp and comparator feature
a common mode input voltage range that extends from the
negative supply to within 1.3V of the positive supply. The
op amp output stage swings from rail-to-rail. The
comparator’s inverting input is internally connected to the
reference output (LTC1541).
The reference output voltage is 1.2V
±1% over the
extended temperature range. The output can drive a
bypass capacitor of up to 0.01
F without any oscillations.
It can also source up to 2mA and sink up to 20
A.
The op amp is internally compensated to be unity-gain
stable with typical GBW at 12kHz and slew rate of 8V/ms.
The comparator has
±2.25mV of internal hysteresis to
ensure clean output switching, even with slow moving
input signals.
The LTC1541/LTC1542 are available in MSOP and SO-8
packages. For space-limited applications, the LTC1541/
LTC1542 are available in a 3mm x 3mm low profile
(0.8mm) dual fine-pitch leadless package (DFN).
Quiescent Current: 5
A Typ
Outputs Swing Rail-to-Rail
Low Op Amp Offset Voltage: 700
V Max
Reference Output Drives 0.01
F Capacitor
Internal 1.2V
±0.4% Reference Output (LTC1541)
Low Input Bias Current: 1nA Max
Reference Output Can Source Up to 2mA
Internal
±2.25mV Comparator Hysteresis
Comparator and Op Amp Input Range
Includes Ground
Op Amp Capable of Driving Up to 1000pF Load
Unity-Gain Stable and 12kHz Bandwidth
2.5V to 12.6V Supply Voltage Range
Pin Compatible Upgrade for MAX951/MAX953
Available in 3mm x 3mm x 0.8mm DFN Package
Battery- or Solar-Powered Systems
Automotive Keyless Entry
Low Frequency, Local Area Alarms/Detectors
Infrared Receivers for Remote Controls
Smoke Detectors and Safety Sensors
GSM Portable Phones
Op Amp VOS Distribution,
VCM = 2.5V, SO-8 Package
Total of 839 Units
INPUT OFFSET VOLTAGE (
V)
–600
PERCENT
OF
UNITS
(%)
600
–300
0
300
50
40
30
20
10
0
VCC = 5V
VSS = 0V
1541/42 TA02
+
1
2
3
7
8
2N3904
SCR LOAD
5
2M
6
2.2
F
1N457
LOW BATTERY
OUTPUT HIGH = “ON”
OUTPUT LOW = “OFF”
1.2V INTERNAL
REFERENCE
1541/42 TA01
+
10k
VN2222
2M
1M
100k
10M
1k
–+
1/2 LTC1541
10k
ICC = 7A AT VIN = 5V
TYPE R
1N457
VIN = 3.6V TO 9V
Pilot Light Flame Detector with Low-Battery Lockout
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
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