描述
The LTC883x 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 (12 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 LTC883x 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 LTC883x amplifiers are optimized for operation at voltages as low as +2.0 V (± 1.0 V) and up to +5.5 V (± 2.75 V) over the extended temperature range of -40 ℃ to +125 ℃.
The LTC8831 (single) is available in both SOT23-5L and SC70-5L packages. The LTC8832 (dual) is offered in SOIC-8L, DFN-8L, MSOP-8L and TSSOP-8L packages. The quadchannel LTC8834 is offered in both SOIC-14L and TSSOP-14L packages
with a wide bandwidth (9 MHz) and very low noise (12 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 LTC883x 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 LTC883x amplifiers are optimized for operation at voltages as low as +2.0 V (± 1.0 V) and up to +5.5 V (± 2.75 V) over the extended temperature range of -40 ℃ to +125 ℃.
The LTC8831 (single) is available in both SOT23-5L and SC70-5L packages. The LTC8832 (dual) is offered in SOIC-8L, DFN-8L, MSOP-8L and TSSOP-8L packages. The quadchannel LTC8834 is offered in both SOIC-14L and TSSOP-14L packages
优势和特点
- Wide Unity-Gain Bandwidth: 9 MHz
- High Slew Rate: 8.5 V/μsFast Settling: 0.3 μs to 0.1%
- Low Noise: 12 nV/√Hz at 1 kHz
- Low Input Offset Voltage: ± 0.7 mV
- Single 2.0 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℃
应用
- Motor Phase Current Sense
- Audio Outputs
- Photodiode Amplification
- Battery-Powered Instruments:
– Consumer, Industrial, Medical, Notebooks
- Sensor Signal Conditioning:
– Sensor Interfaces, Loop-Powered, Active Filters
