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.
PSRR and CMRR exceed 120 dB. These characteristics, coupled with long-term drift of 0.2 μV/month, allow the circuit designer to achieve performance levels previously attained only by discrete designs.
Low cost, high volume production of OP27 is achieved by using an on-chip Zener zap-trimming network. This reliable and stable offset trimming scheme has proven its effectiveness over many years of production history.
The OP27 provides excellent performance in low noise, high accuracy amplification of low level signals. Applications include stable integrators, precision summing amplifiers, precision voltage threshold detectors, comparators, and professional audio circuits such as tape heads and microphone preamplifiers.
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
- EVAL-PRAOPAMP-1KSZ (Single 5-Lead SC70) KS-5
- EVAL-PRAOPAMP-1RJZ (Single 5-Lead SOT 23) RJ-5
- EVAL-PRAOPAMP-1RMZ (Single 8-Lead MSOP) RM-8
- EVAL-PRAOPAMP-1RZ (Single 8-Lead SOIC) R-8
Ask The Applications Engineer - 25 Op Amps Driving Capacitive Loads
(Analog Dialogue, Vol. 31, No. 2, 1997)
Ask The Applications Engineer-6
(Analog Dialogue, 30th Anniversary Reader Bonus)
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