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The AS348/AS2348 are single/dual channels RRIO amplifiers (rail-to-rail input and output), which provide not only maximum output-voltage swing capability but also an extended 300mV common-mode voltage beyond the supply rail. The devices are fully specified to operate from 1.6V to 5.5V single-supply, or ±0.8V and ±2.5V dual-supply applications.
The devices feature a good speed/power consumption ratio, offering 1MHz gain bandwidth while consuming 70μA per channel (typ). They are unity-gain stable for capacitive loads up to 100pF. The low noise density 27nV/√Hz, low input offset voltage 0.5mV and low input offset drift 2μV/°C make them ideal for applications that require precision. With the input bias current is 1pA at room temperature, it is well suitable for low-voltage, low-noise, and low-power applications.
The AS348/AS2348 offer industry-standard packages. The AS348 is available in the SOT25 package, and the AS2348 is offered in the MSOP-8 and SO-8 packages. Temperature is specified for operation: from -40°C to +125°C among all supply voltages. The wide temperature ranges and high ESD tolerance facilitate their use in harsh applications.
Single-Supply Voltage Range: 1.6V to 5.5V
Dual-Supply Voltage Range: ±0.8V to ±2.5V
Ultra-Low Input Bias Current: 1pA (typ)
Offset Voltage: 0.5mV (typ), 2.5mV (max)
Low Input Offset Drift: 2μV/°C (typ)
VCM: 300mV Beyond Supply Rail @ VCC = 3V or 5V
Rail-to-Rail Output Swing:
10kΩ Load: 4mV from Rail
1kΩ Load: 25mV from Rail
Supply Current: 70μA/Channel (typ)
Unity-Gain Stable up to 100pF Capacitive Load Gain Bandwidth: 1.0MHz
Slew Rate: 0.45V/μs @ VCC = 5.0V
Operation Ambient Temperature Range: -40°C to +125°C