The LTC887x family of single-, dual-, and quad- channel amplifiers features a maximized ratio of gain bandwidth (GBW) to supply current and is ideal 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 and white goods. Featuring rail-to-rail input and output swings, a wide bandwidth of 20-MHz combined with low supply current (typical 1.12 mA at 5V supply per amplifier) and low noise, the LTC887x family is an excellent choice for precision, lowcurrent, low-voltage, battery-powered applications. The low input bias current supports these amplifiers to be used in applications with mega-ohm source impedances.

The robust design of the LTC887x amplifiers provides ease-of-use to the circuit designer: integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electro-static discharge (ESD) protection (5-kV HBM). The LTC887x amplifiers are optimized for operation at voltages as low as +1.8 V (± 0.9 V) and up to +5.5 V (± 2.75 V) at the temperature range of 0 ℃ to 70 ℃, and operation at voltages from +2.0 V (± 1.0 V) to +5.5 V (± 2.75 V) over the extended temperature range of -40 ℃ to +125 ℃.

The LTC8871 (single) is available in both SOT23-5L and SOIC-8L packages. The LTC8872 (dual) is offered in SOIC-8L and MSOP-8L packages. The quad-channel LTC8874 is offered in both SOIC-14L and TSSOP-14L packages.

• General Purpose Amplifiers for Cost-Sensitive Systems
• 1.2 MHz GBW for Unity-Gain Stable
• Micro-Power: 85 μA Supply Current Per Amplifier
• Low Input Offset Voltage: ± 3.0 mV Maximum
• Low Noise: 30 nV/√Hz at 1 kHz
• Single 1.8 V to 5.5 V Supply Voltage Range
• Rail-to-Rail Input and Output
• Internal RF/EMI Filter
• Extended Temperature Range: -40℃ to +125℃

• Battery-Powered Instruments:

– Consumer, Industrial, Medical, Notebooks

• Audio Outputs

• Wireless Sensors:

– Home Security, Remote Sensing, Wireless Metering

• Sensor Signal Conditioning:

– Sensor Interfaces, Loop-Powered, Active Filters