LT1368 - Dual Precision Rail-to-Rail Input and Output Op Amps

The LT1366/LT1367/LT1368/LT1369 are dual and quad bipolar op amps which combine rail-to-rail input and output operation with precision specifications. These op amps maintain their characteristics over a supply range of 1.8V to 36V. Operation is specified for 3V, 5V and ±15V supplies. Input offset voltage is typically 150μV, with an open-loop gain AVOL of 1 million while driving a 10k load. Common mode rejection is typically 90dB over the full rail-to-rail input range, and supply rejection is 110dB.

The LT1366/LT1367 have conventional compensation which assures stability for capacitive loads of 1000pF or less. The LT1368/LT1369 have compensation that requires a 0.1μF output capacitor, which improves the amplifier’s supply rejection and reduces output impedance at high frequencies. The output capacitor’s filtering action reduces high frequency noise, which is beneficial when driving A/D converters.

The LT1366/LT1368 are available in plastic 8-pin PDIP and 8-lead SO packages with the standard dual op amp pinout. The LT1367/LT1369 feature the standard quad pinout, which is available in a plastic 14-lead SO package. These devices can be used as plug-in replacements for many standard op amps to improve input/output range and precision.

Features
  • Input Common Mode Range Includes Both Rails
  • Output Swings Rail-to-Rail
  • Low Input Offset Voltage: 150μV
  • High Common Mode Rejection Ratio: 90dB
  • High AVOL: >1V/μV Driving 10k Load
  • Low Input Bias Current: 10nA
  • Wide Supply Range: 1.8V to ±15V
  • Low Supply Current: 375μA per Amplifier
  • High Output Drive: 30mA
  • 400kHz Gain-Bandwidth Product
  • Slew Rate: 0.13V/μs
  • Stable for Capacitive Loads Up to 1000pF
Typical Application
LT1368 Typical Application
LT1368 Typical Application
Applications
  • Rail-to-Rail Buffer Amplifiers
  • Low Voltage Signal Processing
  • Supply Current Sensing at Either Rail
  • Driving A/D Converters
Packaging
LT1368 Package Drawing
LT1368 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT1368CN8#PBFN-8C$4.30$3.45
LT1368CS8#PBFSO-8C$4.50$3.60
LT1368CS8#TRPBFSO-8C$3.66
Datasheet
Design Note
Reliability Data
CAD Symbol
Related Products
LT1366/LT1367/LT1368/LT1369 - Dual and Quad Precision Rail-to-Rail Input and Output Op Amps
DN107 - C-Load TM Op Amps Conquer Instabilities
DN153 - Micropower 4- and 8-Channel, 12-Bit ADCs Save Power and Space
R290 Reliability Data
LT1368 Footprints and Symbols