New JRC introduces the NJU77806, a CMOS operational amplifier providing industry-leading low noise.

October 31, 2013

Tokyo Japan, October 31, 2013 - New Japan Radio Co., Ltd. (New JRC) has introduced to the market the NJU77806, a rail to rail output single CMOS operational amplifier providing industry-leading low noise characteristic (5.5nV/√Hz typ. at f=1kHz)* consistent with low operating current of 500μA.

It also has a wide band characteristic (GBP=4.4MHz) and high RF noise immunity.

* Our check as of October 2013, under 2mA current consumption class CMOS Op-Amps

[General Description]

The NJU77806 is a CMOS operational amplifier combining an industry-leading low noise with low operating current of 500μA. It is well-suited for an amplifier requiring low noise characteristic in a low frequency band such as amplifiers for vibration sensor using in servo system, motion sensor, measuring apparatus and microphone. The NJU77806 is also suitable for battery powered equipment requiring low operating current.


[Features]

NJU77806
1. Providing industry-leading low noise combining with low operating current.

Generally operational amplifier noise characteristic is dependent on its quiescent current. It is difficult to reduce noise in circuit without increase of its operating current. Further CMOS transistor has a noise called “1/f noise” that makes it difficult to design amplifier with low noise characteristic in a low frequency band. The NJU77806 provides both industry-leading low noise and low operating current by circuit layout optimization and new low noise wafer process.

2. Providing a wide band characteristic (GBP=4.4MHz)

The NJU77806 offers low noise amplifier application with wide band characteristic of 4.4MHz.

3. Providing surperior RF immunity

In sensor amplifier application, amplifiers are easily affected by electromagnetic noises cuased by wireless LAN system and mobilephones. Therefore RF immunity is an important characteristic in this application. The NJU77806 provides RF immunity characteristic with the outstanding low noise.

[Feature and Characteristics]

NJU77806
NJU77806
Input voltage noise f=10Hz 11nV/√Hz
f=1Hz 5.5nV/ √Hz
Operating current 500μA typ.
Wide band 4.4MHz
Slew rate 1.1V/μs
Operating voltage single supply 1.8V to 5.5V
dual supply ±0.9V to ±2.75V
Rail-to-Rail output (RL=10kΩ) 0.05V to 4.95V (@VDD=5V)
Ground sense
Commn mode input voltage range VSS-0.1V to VDD-0.9V
Input offset voltage 2mV max.
Input offset voltage drift 1.5μV/°C typ.
High RF immunity
Package outline SC-88A

[Applications]

Low noise microphone amplifier
Photo diode amplifier
Shock sensor amplifier
Accelerometer sensor
Security equipment
Wireless LAN
Communication equipment

[Schedule]

Engineering Sample (ES) Available
Mass Production (MP) November, 2013

A detailed spec is here
NJU77806

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