DESCRIPTION
The LTC®1541 combines a micropower amplifier, comparator and bandgap reference 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.

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
■ Low Input Bias Current: 1nA Max
■ Reference Output Can Source Up to 2mA
■ Internal ±3mV 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

APPLICATIONS
■ 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