LT1369 Datasheet

• Input Common Mode Range Includes Both Rails
• Output Swings Rail-to-Rail
• Low Input Offset Voltage: 150μV
• High Common Mode Rejection Ratio: 90dB
• High A_VOL: >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

• Rail-to-Rail Buffer Amplifiers
• Low Voltage Signal Processing
• Supply Current Sensing at Either Rail
• Driving A/D Converters

The 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 A_VOL 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 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 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.