ADA4091-2ARZ-R7

The ADA4091-2 dual and ADA4091-4 quad are micropower, single-supply, 1.2 MHz bandwidth amplifiers featuring rail-to-rail inputs and outputs. They are guaranteed to operate from a +3.0 V to +30 V single supply as well as from ±1.5 V to ±15 V dual supplies. The ADA4091-2/ADA4091-4 features a unique input stage that allows the input voltage to exceed either supply safely without any phase reversal or latch-up; this is called overvoltage protection (OVP). Applications for these amplifiers include portable telecommunications equipment, power supply control and protection, and interface for transducers with wide output ranges. Sensors requiring a rail-to-rail input amplifier include Hall effect, piezoelectric, and resistive transducers. The ability to swing rail-to-rail at both the input and output enables designers, for example, to build multistage filters in single-supply systems and to maintain high signal-to-noise ratios (SNR). The ADA4091-2/ADA4091-4 is specified over the extended industrial temperature range of -40°C to +125°C.

Applications

• Industrial process control
• Battery-powered instrumentation
• Power supply control and protection
• Telecommunications
• Remote sensors
• Low voltage strain gage amplifiers
• DAC output amplifiers

Key features

• Single-supply operation: 3.0 V to 30 V
• Wide input voltage range
• Rail-to-rail output swing
• Low supply current: 200 μA/amplifier
• Wide bandwidth: 1.2 MHz
• Slew rate: 0.46 V/μs
• Low offset voltage: 250 μV maximum
• No phase reversal
• Overvoltage protection (OVP) 25 V above/below supply rails at ±12 V above/below supply rails at ±15 V