PA90 Cirrus Logic Inc, PA90 Datasheet
PA90
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PA90 Summary of contents
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... Q AND FEEDBACK (See text.) PA90U www.cirrus.com DESCRIPTION The PA90 is a high voltage, low quiescent current MOSFET operational amplifier designed as a low cost solution for driving continuous output currents up to 200mA and pulse currents up to 350mA. The safe oper- ating area (SOA) has no second breakdown limitations and can be observed for all type loads by choosing an appropriate current limiting resistor. The MOSFET output stage is biased AB for linear operation ...
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... Min Typ Max 0 µV/kHz 200 2000 4 50 500 ±V Ŧ µV RMS 94 111 100 470 60 ±V Ŧ 12 ±V Ŧ 200 240 300 470 Units mV µV/°C µV/V pA pA/V pA Ω MHz kHz ° V/µS pF PA90U ...
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... Derate max supply rating .625 V/°C below 25°C case. No derating needed above 25°C case. TYPICAL APPLICATION LOW POWER, PIEZOELECTRIC POSITIONING Piezo positioning may be applied to the focusing of segment- ed mirror systems. The composite mirror may be composed of hundreds of elements, each requiring focusing under com- puter control. In such complex systems the PA90 reduces the costs of power supplies and cooling with its advantages of low cost and low quiescent power consumption while in- creasing circuit density with the SIP package. TYPICAL PERFORMANCE GRAPHS POWER DERATING 40 32 ...
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... CL 1.1 1.0 10M CASE TEMPERATURE, T POWER RESPONSE 400 300 200 100 0.2 10K 100K FREQUENCY, F (Hz) INPUT NOISE VOLTAGE 100K 10 100 1K FREQUENCY, F (Hz 68pF 100Ω 10pF 100Ω 4.7pF 0Ω NONE 0Ω 100 125 (° 10K 100K to – PA90U ...
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... Unidirectional transzorbs prevent this, and it is desirable that they be both electrically and physically as close to the amplifier as possible. STABILITY The PA90 is externally compensated and performance can be tailored to the application. Use the graphs of small signal response and power response as a guide. The compensation capacitor C is recommended. The compensation network C spurious oscillation. QUIESCENT CURRENT REDUCTION When pin shorted to pin 5 (CC2) the AB biasing of the output stage is disabled ...
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... TOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners PA90U ...