Differential Preamplifier ADA400A Datasheet Key features Active differential preamplifier Integral probe power with TEKPROBETM BNC Connectivity The ADA400A is powered directly from TDS400, TDS500, TDS600, TDS700, TDS5000, TDS7000 (TEKPROBE), TDS7000 (TekConnect) w/ TCA-1MEG Series oscilloscopes. The ADA400A may also be powered by a 1103 Probe Power Supply. Applications Mechanical analysis Audio design Biomedical research (not certified for patient connection) ADA400A The ADA400A Differential Preamplifier allows direct oscilloscope measurements of very low amplitude voltages and signals which are not ground referenced. The high impedance of both inputs eliminates the need to add additional ground points in the DUT, thereby avoiding circulating currents which disturb the measurement or the circuit. Key performance specifications 10 V/div sensitivity Typically 100 dB CMRR DC to 10 kHz Medical equipment (not certified for patient connection) ADA400A The high gain and extremely high common mode rejection of the ADA400A Differential Preamplifier provide usable measurements of voltages as low as 5 V, even in high-noise environments. Selectable bandwidth limiting reduces normal mode noise from digital logic, switch mode power supplies, and line frequency sources. Adjustable differential offset allows the user to null out transducer bridge bias and galvanic potential from the test setup. An "infinite impedance" mode can be selected in the two highest gain ranges allowing accurate measurements of signals with high source impedance. Datasheet Specifications All specifications apply to all models unless noted otherwise. Gain settings 100x, 10x, 1x, 0.1x CMRR 100,000: 1 DC - 10 kHz Signal ranges 1 Gain setting Common Mode signal range Differential signal range 1 Max offset 100x 10 V 0.1 V 1.0 V 10x 10 V 1V 1.0 V 1x 40 V 10 V 40 V 0.1x 40 V 80 V 40 V Bandwidth limits 100 Hz, 3 kHz, 100 kHz, full (1 MHz) Input impedance 1 M || ~ 55 pF (infinity selectable in 100x and 10x gains) Noise Typically 30 VRMS at 100x gain (referred to input) For higher voltages, attenuating probes may be used, but CMRR performance will be degraded. 2 www.tektronix.com Ordering information Models ADA400A Differential Preamplifier Standard accessories Instruction manual 070-9164-XX Spare input fuses (2) 159-0024-XX Recommended accessories P6101B 1x passive probe 2 recommended Options Service options Opt. C3 Calibration Service 3 Years Opt. C5 Calibration Service 5 Years Opt. D1 Calibration Data Report Opt. D3 Calibration Data Report 3 Years (with Opt. C3) Opt. D5 Calibration Data Report 5 Years (with Opt. C5) Opt. R5 Repair Service 5 Years (including warranty) Opt. SILV200 Standard warranty extended to 5 years CE Marking Not Applicable. Tektronix is registered to ISO 9001 and ISO 14001 by SRI Quality System Registrar. www.tektronix.com 3 Datasheet ASEAN / Australasia (65) 6356 3900 Belgium 00800 2255 4835* Central East Europe and the Baltics +41 52 675 3777 Finland +41 52 675 3777 Hong Kong 400 820 5835 Japan 81 (3) 6714 3010 Middle East, Asia, and North Africa +41 52 675 3777 People's Republic of China 400 820 5835 Republic of Korea 001 800 8255 2835 Spain 00800 2255 4835* Taiwan 886 (2) 2722 9622 * European toll-free number. If not accessible, call: +41 52 675 3777 Austria 00800 2255 4835* Brazil +55 (11) 3759 7627 Central Europe & Greece +41 52 675 3777 France 00800 2255 4835* India 000 800 650 1835 Luxembourg +41 52 675 3777 The Netherlands 00800 2255 4835* Poland +41 52 675 3777 Russia & CIS +7 (495) 6647564 Sweden 00800 2255 4835* United Kingdom & Ireland 00800 2255 4835* Balkans, Israel, South Africa and other ISE Countries +41 52 675 3777 Canada 1 800 833 9200 Denmark +45 80 88 1401 Germany 00800 2255 4835* Italy 00800 2255 4835* Mexico, Central/South America & Caribbean 52 (55) 56 04 50 90 Norway 800 16098 Portugal 80 08 12370 South Africa +41 52 675 3777 Switzerland 00800 2255 4835* USA 1 800 833 9200 Updated 10 April 2013 For Further Information. Tektronix maintains a comprehensive, constantly expanding collection of application notes, technical briefs and other resources to help engineers working on the cutting edge of technology. Please visit www.tektronix.com. Copyright (c) Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specification and price change privileges reserved. TEKTRONIX and TEK are registered trademarks of Tektronix, Inc. All other trade names referenced are the service marks, trademarks, or registered trademarks of their respective companies. 11 Apr 2013 www.tektronix.com 60W-10387-5