portable electronics AAP662 ? copyright 2011 C microsemi corporat ion. C aads0 0036 / aa805 - advanced - rev. 4 - march 20 12 1 / 5 AAP662 advanced dat a electret microphone (ecm) pre-amplifier w/ programmable filter description the AAP662 ecm pre amplifier is a low gain pre- amplifier aimed at offering a feature-rich alternative to a typical jfet preamp solution. the performance of this pre-amplifier is such that it enables design of enhanced end system products due to its ultra-low noise, integrated high-pass filter, and other high performance features. the AAP662 ecm pre-amplifier provides a number of performance advantages over prior ecm pre- amplifier products. key features include ultra low input capacitance (0.35pf typical) and quiescent current (100 a minimum), with low equivalent input noise (2.5 v rms, a-weighted, with the microphone capacitor short circuited). additionally, the pre-amplifier sports a programmable high pass filter and dc output operation down to 1.23v. other key features include thd performance below 0.5% maximum, output impedance of 25 ? typical, with exceptionally high tolerance to rf interference and esd tolerance (8kv). the AAP662 is offered with a 6db gain. packaging is bumped chip scale smd configuration with a size of 930 m x 580 m and an overall thickness of 320 m (including solder bumps). optimum for small diameter microphones, the die is rohs compliant, with lead free solder pads of 118 m diameter. packing styles available are 2 x 2 waffle pack or tape and reel. features gain: 6db, cmic shorted low input capacitance0.35pf typ. low equivalent input noise performance2.5 v rms, cmic = 5pf 8kv esd tolerance high rfi tolerance, low output impedance (25 ? ) excellent thd performance (< 0.5%) low quiescent current (120 a minimum) chip-scale smd bumped packaging (930 m x 580 m, 320 m thick) pin configuration: 5-lead micro smd AAP662 shown f rom t he t op and bot t om. downloaded from: http:///
portable electronics AAP662 ? copyright 2011 C microsemi corporat ion. C aads0 0036 / aa805 - advanced - rev. 4 - march 20 12 2 / 5 functional block diagram maximum ratings parameter symbol parameters units conditions min. max. applied voltage (all pins) -0.5 2.5 v max voltage between pin and gnd supply current idd 2 ma esd v esd,out 8000 v out terminal, 1nf capacitor between pin and gnd v esd 2000 other terminals operating ambient temp -40 85 oc storage temp range -40 100 oc performance operating temp range -5 55 oc electrical characteristics unless otherwise stated: t=25oc, vdd=1.8v, v in =-40dbvrms, r l =2.2k ? , c c =33nf, c mic =short parameter symbol parameters units conditions min typ max operating supply supply voltage vdd 1.6 2.0 5.5 v r l =3.3k ? operating output voltage v op 1.25 1.28 1.31 v supply current idd 260 a note 1 note 1: idd = (vdd C v op ) / r l downloaded from: http:///
portable electronics AAP662 ? copyright 2011 C microsemi corporat ion. C aads0 0036 / aa805 - advanced - rev. 4 - march 20 12 3 / 5 ac characteristics transfer function tf 5.5 6.5 7.5 db gain variation over supply av 0.1 db 1.6v < vdd < 3.5v gain variation over temp av 0.2 db -5oc < t < 55 oc input referred noise e n 2.5 v rms input shorted to gnd, a -wei g hted values overload margin v outmax 300 mvpp 5% distortion, tf=4db lf cutoff f low 50 hz hf cutoff f high 85 khz total harmonic distortion thd 0.4 % vout=-40dbvrms input capacitance c in 0.35 pf input impedance z in 10 g ? output impedance z out 25 70 ? input impedance of fb z in fb 31.8 k ? application use the following equation to calculate the capacitor (c c ) value to program the low frequency cutoff of the high-pass filter: example 1: for a cutoff of f = 100hz using the AAP662 c c = 1 . = 1 . = 50nf 2 * z in fb * f 2 * 31.8k * 100 example 2: for a cutoff of f = 200hz using the aapxxx_6 c c = 1 . = 1 . = 25nf 2 * z in fb * f 2 * 31.8k * 200 downloaded from: http:///
portable electronics AAP662 ? copyright 2011 C microsemi corporat ion. C aads0 0036 / aa805 - advanced - rev. 4 - march 20 12 4 / 5 ordering ? pn ? subgroup ? description ? temp. ? range ? package ? packing ? type ? packing ? qty ? AAP662 ? s \ m5a \ g \ lf \ w ? microphone ? ecm ? interface ? pre \ amplifier, ? 6.5db ? gain ? s ?\? special ? \ 5c ? to ? +55c ? 5 \ pin ? micro ? smd ? waffle \ pack ? 400 ? AAP662 ? s \ m5a \ g \ lf \ tr ? microphone ? ecm ? interface ? pre \ amplifier, ? 6.5db ? gain ? s ?\? special ? \ 5c ? to ? +55c ? 5 \ pin ? micro ? smd ? t&r ? 3500 ? test suggestions a suitable input amplitude is -44dbv (6.301 mvrms). with a gain of 6.5db, this will give -37.5dbv out (13.3 mvrms). with the input shorted to ground, the dc voltage at t he fb pin should be about 600mv, and the dc voltage at the hp pin should be about 800mv. due to the high impedances, a dvm with 10 m ? input resistance minimum should be used with the negative input grounded to the lab bench. ordering information downloaded from: http:///
portable electronics AAP662 ? copyright 2011 C microsemi corporat ion. C aads0 0036 / aa805 - advanced - rev. 4 - march 20 12 5 / 5 the following is a brief overview of certai n terms and conditions of sale of produc t. for a full and complete copy of all the general terms and conditions of sale, visit our webp age http://www.microsemi.com/en/legal/terms-and-conditions. limited warranty the product is warranted that it will conform to the applic able specifications and be free of defects for one year. buyer is responsible for selection of, use of and resu lts obtained from use of the product. buyer indemnifies and holds asic advantage, inc. harmless for claims arising out of the application of asic advantage, inc.s products to buyers designs. applications described herein or in any catalogs, advertisements or other documents are for illustrative purposes only. critical applications products are not authorized for use in critical applications including aerospac e and life support applications. use of products in these applications is fully at the risk of the buyer. critical app lications include any system or device whose failure to perform can result in significant injury to the user. lethal voltages lethal voltages could be present in the applications. please comply with all applicable safety regulations. intellectual property rights and proprietary data asic advantage, inc. retains all intellectual property right s in the products. sale of products does not confer on buyer any license to the intellectual property. asic advant age, inc. reserves the right to make changes without notice to the products at any time. buyer agrees not to us e or disclose asic advantage inc.s proprietary information without written consent. trademarks and patents - in-plug ? is a registered trademark of asic advantage, inc. - aais modified snubber network is patented under the us patent # 6,233,165 protection for custom solutions when aai accepts to design and manufacture products to bu yers designs or specifications, buyer has certain obligations to provide defense in a suit or proceeding clai ming infringement of a patent, copyright or trademark or for misappropriation of use of any trade secrets or for unfair competition. compliance with laws buyer agrees that at all times it will comply with all applicable federal, state, municipal, and local laws, orders and regulations. buyer agrees to comply with all applicable re strictions on exports and re-e xports including obtaining any required u.s. government license, author ization, or approval. buyer shall pay any duties, levies, taxes, brokerage fees, or customs fees imposed on the products. title and delivery all shipments of goods shall be delivered exworks, sunnyvale, ca, u.s.a. title in the goods shall not pass to buyer until asic advantage, inc. has received in full all amounts owed by buyer. latest datasheet updates for the latest datasheet updates, visit our web page: http://www.asicadvantage.com. worldwide representatives to access aais list of worldwide representativ es, visit our web page http://www.asicadvantage.com. copyrights copyrights and all other proprietary right s in the content rests with asic adv antage inc. (aai) or its licensors. all rights in the content not expressly gr anted herein are reserved. except as ot herwise provided, the content published on this document may be reproduced or distributed in unm odified form for personal non-commercial use only. any other use of the content, including without limitation distribution, reproduction, modification, display or transmission without the prior written consent of aai is strictly prohibited. all copyright and other proprietary notices shall be retained on all reproductions. microsemi corp . 1290-b reamwood ave, sunnyvale california 94089, usa tel: (1) 408-541-8686 fax: (1) 408-541-8675 website: http://www.asicadvantage.com http://www.microsemi.com downloaded from: http:///
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