Micropower, OVP, RRIO, Quad Op Amp

The ADA4092-4 quad is a micropower, single-supply, 1.2 MHz bandwidth amplifier featuring rail-to-rail inputs and outputs. It is 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 ADA4092-4 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 telecom-munications 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, piezo-electric, 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 ADA4092-4 is specified over the extended industrial temperature range of −40°C to +125°C. The ADA4092-4 is part of the growing selection of 36 V, low power op amps from Analog Devices, Inc. (See Table 1 in data sheet).

The ADA4092-4 is available in the 14–lead TSSOP surface-mount package.

Applications

* Industrial process control

* Battery-powered instrumentation

* Power supply control and protection

* Telecommunications

* Remote sensors

* Low voltage strain gage amplifiers

* DAC output amplifiers

* 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: 1.4 MHz

* High phase margin: 69°

* Slew rate: 0.4 V/μs

* Low offset voltage: 1.50 mV maximum

* No phase reversal

* Overvoltage protection (OVP)

25 V above/below supply rails at ±5 V

12 V above/below supply rails at ±15 V