FEATURES

Low Noise: 80 nV p-p (0.1 Hz to 10 Hz), 3 nV/√Hz

Low Drift: 0.2
V/C

High Speed: 2.8 V/
s Slew Rate, 8 MHz Gain

Bandwidth

Low VOS: 10
V

Excellent CMRR: 126 dB at VCM of ±11 V

High Open-Loop Gain: 1.8 Million

Fits 725, OP07, 5534A Sockets

Available in Die Form

GENERAL DESCRIPTION

The OP27 precision operational amplifier combines the low

offset and drift of the OP07 with both high speed and low noise.

Offsets down to 25 μV and drift of 0.6 μV/°C maximum make

the OP27 ideal for precision instrumentation applications.

Exceptionally low noise, en = 3.5 nV/√Hz, at 10 Hz, a low 1/f

noise corner frequency of 2.7 Hz, and high gain (1.8 million),

allow accurate high-gain amplification of low-level signals. A

gain-bandwidth product of 8 MHz and a 2.8 V/μsec slew rate

provides excellent dynamic accuracy in high-speed, dataacquisition

systems.

A low input bias current of ± 10 nA is achieved by use of a

bias-current-cancellation circuit. Over the military temperature

range, this circuit typically holds IB and IOS to ±20 nA and 15 nA,

respectively.

The output stage has good load driving capability. A guaranteed

swing of ±10 V into 600 Ω and low output distortion make the

OP27 an excellent choice for professional audio applications.

(Continued on page 7)