The LTC863x family of single-, dual-, and quad- channel operational amplifiers represents a new generation of general-purpose, low-power op-amps.Featuring railto-rail input and output (RRIO) swings, low quiescent current (typical 700 µA) combined with a wide bandwidth (9 MHz) and very low noise (13 nV/√Hz at 1 kHz) makes this family very attractive for a variety of battery-powered applications that require a good balance between cost and performance, such as audio outputs, motor phase current sensing, photodiode amplification, barcode scanners and white goods. The low input bias current supports these amplifiers to be used in applications with mega-ohm source impedances.

The robust design of the LTC863x amplifiers provides ease-of-use to the circuit designer:unity-gain stability with capacitive loads of up to 500 pF, integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electro-static discharge (ESD) protection (5-kV HBM). The LTC863x amplifiers are optimized for operation at voltages as low as +2.3 V (± 1.15 V) and up to +5.5 V (± 2.75 V) over the extended temperature range of -40 ℃ to +125 ℃.

The LTC8631 (single) is available in SOT23-5L package. The LTC8632 (dual) is offered in both SOIC-8L, DFN-8L and MSOP8L packages. The quad-channel LTC8634 is offered in 14- lead SOIC package

Advantages And Characteristics

  •  Wide Unity-Gain Bandwidth: 9 MHz
  •  High Slew Rate: 8.5 V/μs
  •  Fast Settling: 0.3 μs to 0.1%
  •  Low Noise: 13 nV/√Hz at 1 kHz
  •  Low Input Offset Voltage: ± 0.7 mV
  •  Single 2.3 V to 5.5 V Power Supply Range
  •  Rail-to-Rail Input and Output
  •  Internal RF/EMI Filter
  •  Low Supply Current: 700 μA at 5V Supply Per Amplifier
  •  Extended Temperature Range: -40℃ to +125℃


  •  Motor Phase Current Sense
  •  Photodiode Amplification
  •  Audio Outputs
  •  Active Filters
  •  Driving A/D Converters
  •  Portable Equipment
  •  Battery-Powered Instrumentation
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