描述 Description

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.

特性 Features

? Wide Unity-Gain Bandwidth: 20 MHz
? High Slew Rate: 22 V/μs
? Fast Settling: 250 ns to 0.1%
? Low Noise: 8 nV/√Hz at 1 kHz
? Low Input Offset Voltage: ± 0.5 mV
? Single 1.8 V to 5.5 V Supply Voltage Range at 0 ℃ to 70 ℃
? Rail-to-Rail Input and Output
? Internal RF/EMI Filter
? Low Supply Current: 1.12 mA at 5 V Supply Per Amplifier
? Extended Temperature Range: -40℃ to +125℃

應(yīng)用 Application

? Battery-Powered Instruments:
– Consumer, Industrial, Medical, Notebooks
? Audio Outputs
? Motor Phase Current Sense
? Photodiode Amplification
? Sensor Signal Conditioning:
– Sensor Interfaces, Loop-Powered, Active Filters