OP491GRUZ-REEL

OP491 is a single channel, micropower, rail-to-rail input/output opamp. It is fabricated on Analog Devices CBCMOS process, the device has a unique input stage that allows the input voltage to safely extend 10V beyond either supply without any phase inversion or latch-up. The output voltage swings to within millivolts of the supplies and continues to sink or source current all the way to the supplies. The ability to swing rail-to-rail at both the input and output enables designers to build multistage filters in single-supply systems and to maintain high signal-to-noise ratios. It is widely used in application such as industrial process control, battery-powered instrumentation, power supply control and protection, telecommunications, remote sensors, low voltage strain gauge amplifiers, DAC output amplifiers etc.

• Single-supply operation is 2.7V to 12V
• Wide input voltage range, no phase reversal
• Supply current/amplifier is 200μA typ at (VS = 3V, VCM = 0.1V, VO = 1.4V, TA = 25°C)
• Gain bandwidth is 3MHz typ at (VS = 3V, VCM = 0.1V, VO = 1.4V, TA = 25°C)
• Slew rate is 0.4V/μs typ at (VS = 3V, VCM = 0.1V, VO = 1.4V, TA = 25°C)
• Offset voltage is 80μV typ at (VS = 3V, VCM = 0.1V, VO = 1.4V, TA = 25°C)
• Input bias current is 30nA at (VS = 3V, VCM = 0.1V, VO = 1.4V, TA = 25°C)
• Voltage noise is 2μV p-p at (0.1Hz to 10Hz)
• Operating temperature range is −40°C to +125°C
• Packaging style is 14-lead TSSOP

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