The LTC881x family of single-, dual-, and quad- channel amplifiers features a maximized ratio of gain bandwidth (GBW) to supply current and is ideal for battery-powered applications such as portable instrumentations, portable medical equipments, wearable fitness devices, and wireless remote sensors. Featuring rail-to-rail input and output swings, 15-kHz bandwidth of combined with ultra-low supply current (typical 600 nA at 5.0 V per amplifier) and low noise (6.3 μVP-P at 0.1 to 10 Hz) , the LTC881x family is an excellent choice for precision, cost-optimized, “Always ON” sensing applications.
The robust design of the LTC881x 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 LTC881x amplifiers are optimized for operation at voltages as low as +1.7 V (± 0.85 V) and up to +5.5 V (± 2.75 V) over the extended temperature range of -40 ℃ to +85 ℃.
The LTC8811 (single) is available in both SOT23-5L and SC70-5L packages. The LTC8812 (dual) is offered in DFN-8L, SOIC-8L and MSOP-8L packages. The quad-channel LTC8814 is offered in QFN-16L, SOIC-14L and TSSOP-14L packages.
◼ Ultra-Low Power Preserves Battery Life
– 600 nA Supply Current (Typically at 5 V) Per Amplifier
◼ Single 1.7 V to 5.5 V Supply Voltage Range
– Can be Powered From the Same 1.8V/2.5V/3.3V/5V System Rails
◼ 15 kHz GBW
◼ Precision Specifications for Buffer/Filter/Gain Stages
– Low Input Offset Voltage: 0.6 mV
– Low Noise: 6.3 μVP-P at 0.1 to 10 Hz
– 1 pA Input Bias Current
– Rail-to-Rail Input and Output
◼ Extended Temperature Range: -40℃ to +85℃
◼ Battery-Powered Instruments:
– Consumer, Industrial, Medical, Notebooks
◼ Wearable Fitness Devices
◼ Sensor Signal Conditioning:
– Sensor Interfaces, Loop-Powered, Active Filters
◼ Wireless Sensors:
– Home Security, Remote Sensing, Wireless Metering