Nisshinbo NJU7755x Rail-to-Rail I/O Op-Amps

Nisshinbo NJU7755x Rail-to-Rail I/O Op-Amps are single/dual/quad input/output and single-supply operational amplifiers. These operational amplifiers offer 50µA low supply current per amplifier, 1.7MHz wide gain-bandwidth, and a 0.8V/µs slew rate. The NJU7755x amplifiers operate from a 1.8V single supply voltage that contributes to the energy-saving design and are suitable for low-power battery equipment. These amplifiers provide low input bias current and are used for photodiode amplifiers, piezoelectric sensors, smoke detectors, and high-impedance applications. Typical applications include audio amplifiers, high-side current sensing, active filters, and buffering.

The NJU77550/NJU77551 amplifiers are available in 5-pin SC-88A and SOT-23-5 packages. The NJU77552 amplifiers come in the 8-pin SOP8 package, and the NJU77554 amplifiers come in the SSOP14 package.

Features

Rail-to-rail input/output:
- Single (NJU77550/NJU77551)
- Dual (NJU77552)
- Quad (NJU77554)

Overvoltage input protection (input tolerant)
Unity-gain stable
Low input bias current

Applications

Signal amplifier for any sensor with long battery life:
- PIR sensor
- Home appliances with dust sensor
- Pressure gauge
- Gas sensor
- Smoke sensor
- Portable gas detectors

Industrial appliances under severe temperature:
- Coriolis flowmeter
- Water flow
- Environmental monitoring
- Boiler control
- Gas leak detector for gas appliance
- Process control industries

Specifications

5V V⁺typical value
High efficiency:
- 1.7MHz GBW
- 50µA/channel supply current
5mV input offset voltage (maximum)
0.8V/µs slew rate
-55°C to +125°C operating temperature range

1.8V to 5.5V supply voltage range
Packages:
- SOT-23-5 and SC-88A (NJU77550/NJU77551)
- SOP8, MSOP8(TVSP8), or DFN8-U1 (ESON8-U1) (NJU77552)
- SSOP14 (NJU77554)