PDF OPA124 Data sheet ( Hoja de datos )

Número de pieza	OPA124
Descripción	Low Noise Precision Difet OPERATIONAL AMPLIFIER
Fabricantes	Burr-Brown
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No Preview Available ! ® OPA124 OPA124 Low Noise Precision Difet ® OPERATIONAL AMPLIFIER FEATURES q LOW NOISE: 6nV/√Hz (10kHz) q LOW BIAS CURRENT: 1pA max q LOW OFFSET: 250µV max q LOW DRIFT: 2µV/°C max q HIGH OPEN-LOOP GAIN: 120dB min q HIGH COMMON-MODE REJECTION: 100dB min q AVAILABLE IN 8-PIN PLASTIC DIP AND 8-PIN SOIC PACKAGES DESCRIPTION The OPA124 is a precision monolithic FET opera- tional amplifier using a Difet (dielectrical isolation) manufacturing process. Outstanding DC and AC per- formance characteristics allow its use in the most critical instrumentation applications. Bias current, noise, voltage offset, drift, open-loop gain, common-mode rejection and power supply re- jection are superior to BIFET and CMOS amplifiers. Difet fabrication achieves extremely low input bias currents without compromising input voltage noise performance. Low input bias current is maintained over a wide input common-mode voltage range with unique cascode circuitry. This cascode design also allows high precision input specifications and reduced susceptibility to flicker noise. Laser trimming of thin- film resistors gives very low offset and drift. Compared to the popular OPA111, the OPA124 gives comparable performance and is available in an 8-pin PDIP and 8-pin SOIC package. BIFET® National Semiconductor Corp., Difet ® Burr-Brown Corp. APPLICATIONS q PRECISION PHOTODIODE PREAMP q MEDICAL EQUIPMENT q OPTOELECTRONICS q DATA ACQUISITION q TEST EQUIPMENT Substrate 8 –In 2 +In 3 Noise-Free Cascode(2) Trim(1) 10kΩ 1 Trim(1) 10kΩ 5 2kΩ 2kΩ 2kΩ 2kΩ OPA124 Simplified Circuit NOTES: (1) Omitted on SOIC. (2) Patented. +VCC 7 Output 6 –VCC 4 International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1993 Burr-Brown Corporation PDS-11203C OPA124Printed in U.S.A. March, 1998 ® 1 page TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, and VCC = ±15VDC, unless otherwise noted. BIAS AND OFFSET CURRENT BIAS AND OFFSET CURRENT vs TEMPERATURE vs INPUT COMMON-MODE VOLTAGE 1k 1k 10 100 PB 10 100 1 10 Bias Current 11 0.1 Offset Current 0.1 0.1 0.01 –50 –25 0 25 50 75 Ambient Temperature (°C) 0.01 100 125 0.01 –15 –10 –5 0 5 Common-Mode Voltage (V) 10 10 1 0.1 0.01 15 140 120 100 80 60 40 20 0 1 POWER SUPPLY REJECTION vs FREQUENCY 10 100 1k 10k 100k 1M 10M Frequency (Hz) 140 120 100 80 60 40 20 0 1 COMMON-MODE REJECTION vs FREQUENCY 10 100 1k 10k 100k 1M 10M Frequency (Hz) COMMON-MODE REJECTION vs INPUT COMMON-MODE VOLTAGE 120 110 100 90 80 70 –15 –10 –5 0 5 10 Common-Mode Voltage (V) 15 140 120 100 80 60 40 20 0 1 OPEN-LOOP FREQUENCY RESPONSE –45 Gain Phase Margin ≈ 65° –90 –135 –180 10 100 1k 10k 100k 1M 10M Frequency (Hz) ® 5 OPA124 5 Page

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PDF Descargar	[ Datasheet OPA124.PDF ]

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