LTC1541 Micropower Op Amp, Comparator and Reference

The LTC®1541/LTC1542 combine a micropower amplifier, comparator and bandgap reference (LTC1541) in an 8-pin package. The part operates from a single 2.5V to 12.6V or dual ±1.25V to ±6.3V supply with a typical supply current of 5µA. 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 0.01µF without any oscillations. It can also source up to 2mA and sink up to 20µA.

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).

产品特点 Features
  • Quiescent Current: 5µA Typ
  • Outputs Swing Rail-to-Rail
  • Low Op Amp Offset Voltage: 700µV Max
  • Reference Output Drives 0.01µF 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
参数
LTC1541 参数
应用
  • 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
典型应用图
LTC1541 典型应用
LTC1541 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LTC1541CDD DFN 8 C $2.31  $1.83 
LTC1541CDD#PBF DFN 8 C $2.31  $1.83 
LTC1541CDD#TR DFN 8 C $1.88 
LTC1541CDD#TRPBF DFN 8 C $1.88 
LTC1541CMS8 MSOP 8 C $2.15  $1.70 
LTC1541CMS8#PBF MSOP 8 C $2.15  $1.70 
LTC1541CMS8#TR MSOP 8 C $1.75 
LTC1541CMS8#TRPBF MSOP 8 C $1.75 
LTC1541CS8 SO 8 C $2.05  $1.50 
LTC1541CS8#PBF SO 8 C $2.05  $1.50 
LTC1541CS8#TR SO 8 C $1.55 
LTC1541CS8#TRPBF SO 8 C $1.55 
LTC1541IDD DFN 8 I $2.54  $1.99 
LTC1541IDD#PBF DFN 8 I $2.54  $1.99 
LTC1541IDD#TR DFN 8 I $2.04 
LTC1541IDD#TRPBF DFN 8 I $2.04 
LTC1541IMS8 MSOP 8 I $2.37  $1.85 
LTC1541IMS8#PBF MSOP 8 I $2.37  $1.85 
LTC1541IMS8#TR MSOP 8 I $1.90 
LTC1541IMS8#TRPBF MSOP 8 I $1.90 
LTC1541IS8 SO 8 I $2.26  $1.65 
LTC1541IS8#PBF SO 8 I $2.26  $1.65 
LTC1541IS8#TR SO 8 I $1.70 
LTC1541IS8#TRPBF SO 8 I $1.70 
LTC1541 数据手册及相关资料下载
  1. 数据手册(英文) : LTC1541/LTC1542 - Micropower Op Amp, Comparator and Reference.PDF
  2. 设计要点 (英文) : DN188 - Inexpensive Circuit Charges Lithium-Ion Cells.PDF
  3. 设计要点 (英文) : DN190 - Op Amp, Comparator and Reference IC Provides Micropower Monitoring Capability.PDF
  4. 可靠性数据 : R312 Reliability Data .PDF