Low VOS 1 Channel SOP8 OP27GSZ Precision Amplifiers IC

OP27GSZ Precision Amplifiers IC OP27 OP27G OP27GS OP27GSZ SOP8 Chipset Precision Amplifiers SO-8 MARKED AS "OP27G" IC

Low Noise, Precision Operational Amplifier OP27

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 maximum drift of 0.6 μV/°C make the OP27 ideal for precision instrumentation applications. 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/μs slew rate provide excellent dynamic accuracy in high speed, data-acquisition 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.

FEATURES

Low noise: 80 nV p-p (0.1 Hz to 10 Hz), 3 nV/√Hz
Low drift: 0.2 μV/°C
High speed: 2.8 V/μs slew rate, 8 MHz gain bandwidth
Low VOS: 10 μV
CMRR: 126 dB at VCM of ±11 V
High open-loop gain: 1.8 million
Available in die form

APPLICATIONS INFORMATION

OP27 series units can be inserted directly into OP07 sockets with or without removal of external compensation or nulling components.

OP27 offset voltage can be nulled to 0 (or another desired setting) using a potentiometer (see Figure 35).
The OP27 provides stable operation with load capacitances of up to 2000 pF and ±10 V swings; larger capacitances should be decoupled with a 50 Ω resistor inside the feedback loop.

The OP27 is unity-gain stable.
Thermoelectric voltages generated by dissimilar metals at the input terminal contacts can degrade the drift performance.
Best operation is obtained when both input contacts are maintained at the same temperature.

ORDERING GUIDE

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