? semiconductor components industries, llc, 2014 june, 2014 ? rev. 5 1 publication order number: NCS2300/d NCS2300 headset detection interface the NCS2300 is a compact and cost effective headset detection interface ic. it integrates a comparator, or gate, and n?channel mosfet to detect the presence of a stereo headset with a microphone. pull?up resistors for the detection pins are internalized. a built in resistor divider provides the reference voltage for detecting the left audio channel. the logic low output of the or gate indicates the headset has been connected properly. the NCS2300 comes in a space saving udfn6 package (1.2 x 1.0 mm). features ? supply voltage: 1.6 v to 2.75 v ? low quiescent supply current: 7.5 a typical @ v dd = 1.8 v ? integrated resistors, comparator, or gate, and n?channel mosfet ? space saving udfn6 package ? these devices are pb?free, halogen free/bfr free and are rohs compliant typical applications ? cell phones, smartphones ? tablets ? notebooks udfn6 mu suffix case 517aa http://onsemi.com marking diagram device package shipping ? ordering information NCS2300mutag udfn6 (pb?free) 3000 / tape & reel pin diagram ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specification brochure, brd8011/d. 1 a = specific device code m = date code = pb?free package m a 1 3 2 4 5 6 top view gnd mic gnd_detect out vdd l_detect
NCS2300 http://onsemi.com 2 l_detect gnd_detect mic out 6 3 4 2 5 1 vdd gnd to baseband gpio m g r l mic gnd r l l_detect gnd_detect l/r to audio codec vdd mic bias voltage 2.2k NCS2300 figure 1. typical application schematic NCS2300 270k 1m vdd ? l_detect vdd gnd_detect mic out 6 3 4 2 5 1 vdd gnd vdd vdd 1m 1m reference voltage accurate within 5% vdd vdd + figure 2. block diagram
NCS2300 http://onsemi.com 3 table 1. output logic inputs outputs headset l_detect gnd_detect out mic 0 0 0 1 (external pull?up) detected 0 1 1 0 not detected 1 0 1 0 1 1 1 0 table 2. pin description pin name type description 1 gnd power gnd is connected to the system ground. 2 mic output the open drain mic output controls the bias on the mic line. when the headset is not present, mic is pulled low. when the headset is present, mic is pulled up to the mic bias voltage through an external pull?up resistor. 3 gnd_detect input gnd_detect is the or gate input. an internal 1 m pull?up resistor pulls this pin high when the headset is not present. 4 l_detect input l_detect is the comparator input. an internal 1 m pull?up resistor pulls this pin high when the headset is not present. 5 vdd power vdd is connected to the system power supply. a 0.1 f decoupling capacitor is recommended as close as possible to this pin. 6 out output out is a logic output that indicates whether the headset has been properly connected. out will be logic low only when gnd_detect and l_detect are low. table 3. absolute maximum ratings (note 1) rating symbol value unit supply voltage range v dd 0 to 2.75 v l_detect input pin voltage range v l_detect ?0.1 to v dd + 0.1 v gnd_detect input pin voltage range v gnd_detect ?0.1 to v dd + 0.1 mic output pin voltage range v mic 0 to 6.0 v maximum mic current i mic 2 ma maximum junction temperature t j(max) +125 c storage temperature range t stg ?65 to +150 c esd capability (note 2) human body model machine model esd hbm esd mm 5000 250 v latch?up current (note 3) i lu 800 ma moisture sensitivity level (note 4) msl level 1 stresses exceeding those listed in the maximum ratings table may damage the device. if any of these limits are exceeded, device function ality should not be assumed, damage may occur and reliability may be affected. 1. refer to electrical characteristics and application information for safe operating area. 2. this device series incorporates esd protection and is tested by the following methods: esd human body model tested per aec?q100?002 (jedec standard: jesd22?a114) esd machine model tested per aec?q100?003 (jedec standard: jesd22?a115) 3. latch?up current tested per jedec standard: jesd78 4. moisture sensitivity level tested per ipc/jedec standard: j std 020a
NCS2300 http://onsemi.com 4 table 4. operating ranges rating conditions symbol min typ max unit power supply voltage v dd 1.6 1.8 2.75 v input voltage l_detect and gnd_detect pins v in 0 v dd v input transition rise or fall rate gnd_detect pin t / v 0 10 ns/v bias voltage on mic output v mic 0 3.0 v ambient temperature t a ?40 85 c junction temperature t j ?40 125 c functional operation above the stresses listed in the recommended operating ranges is not implied. extended exposure to stresse s beyond the recommended operating ranges limits may affect device reliability. table 5. electrical characteristics typical values are referenced to t a = 25 c, v dd = 1.8 v, unless otherwise noted. min/max values apply from t a = ?40 c to 85 c, unless otherwise noted. (note 5) parameter test conditions symbol min typ max unit supply characteristics quiescent supply current v gnd_detect = 1.8 v or 0 v i dd 7.5 12 a input characteristics of l_detect voltage input low v dd = 1.8 v v il 1.33 v voltage input high v dd = 1.8 v v ih 1.5 v propagation delay to out c out = 15 pf, gnd_detect = 0 v, l_detect = 1.31 v to 1.52 v t plh , t phl 480 ns low voltage input leakage v l_detect = 0 v i il 1.8 a high voltage input leakage v l_detect = 1.8 v i ih 500 pa input capacitance f = 1 mhz c in 3 pf input characteristics of gnd_detect voltage input low v dd = 1.8 v v il 0.63 v voltage input high v dd = 1.8 v v ih 1.17 v propagation delay to out c out = 15 pf, r l = 1 m , l_detect = 0 v, gnd_detect = 0 to 1.8 v t plh , t phl 550 ps low voltage input leakage v gnd_detect = 0 v i il 1.8 a high voltage input leakage v gnd_detect = 1.8 v i ih 500 pa input capacitance f = 1 mhz c in 3 pf output characteristics of out voltage output low v dd = 1.8 v, i oh = 0.1 ma v ol 0.10 v voltage output high v dd = 1.8 v, i oh = ?0.1 ma v oh 1.70 v rise time c out = 15 pf, r l = 1 m t rise 7 ns fall time c out = 15 pf, r l = 1 m t fall 4 ns characteristics of mic drain?source on resistance of nmos v dd = 1.8 v, i mic = 1 ma r ds(on) 0.9 1.4 product parametric performance is indicated in the electrical characteristics for the listed test conditions, unless otherwise noted. product performance may not be indicated by the electrical characteristics if operated under different conditions. 5. guaranteed by characterization and/or design.
NCS2300 http://onsemi.com 5 typical characteristics figure 3. supply current vs. temperature figure 4. v oh vs. i oh of out pin figure 5. v ol vs. i ol of out pin mic drain current (ma) 1 figure 6. on resistance vs. drain current at v dd = 1.6 v 2 1.8 1.2 on resistance ( ) 2 v dd = 1.6 v mic drain current (ma) figure 7. on resistance vs. drain current at v dd = 1.8 v on resistance ( ) 2 on resistance ( ) mic drain current (ma) figure 8. on resistance vs. drain current at v dd = 2.0 v t = ?40 c t = 25 c t = 85 c 1.4 1.6 v dd = 1.8 v t = ?40 c t = 25 c t = 85 c t = ?40 c t = 25 c t = 85 c v dd = 2.0 v 2 v dd = 1.6 v v dd = 1.8 v v dd = 2.0 v temperature ( c) supply current ( a) 9.5 ?50 100 75 ?25 0 25 50 9.25 9 8.75 8.5 8.25 8 7.75 7.5 7.25 7 sink current (ma) ?5 0 ?1 ?4 voltage output high (v) 1.8 ?3 ?2 1.78 1.76 1.74 1.72 1.7 1.68 1.66 1.64 1.62 1.6 t = ?40 c t = 25 c t = 85 c source current (ma) voltage output low (mv) 180 05 4 123 160 140 120 100 80 60 40 20 0 t = ?40 c t = 25 c t = 85 c 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 12 1.8 1.2 1.4 1.6 12 1.8 1.2 1.4 1.6
NCS2300 http://onsemi.com 6 typical characteristics figure 9. low to high propagation to out with changing input overdrive of l_detect figure 10. high to low propagation to out with changing input overdrive of l_detect input 100 mv 50 mv 20 mv 10 mv v dd = 1.8 v time (ns) voltage (v) 2.25 ?100 700 600 0 100 200 500 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 ?0.25 300 400 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 ?0.25 time (ns) voltage (v) ?100 700 600 0 100 200 500 300 400 input 100 mv 50 mv 20 mv 10 mv v dd = 1.8 v applications information supply voltage the NCS2300 works with a wide range of supply voltages from 1.6 v to 2.75 v. a 0.1 f decoupling capacitor should be placed as close as possible to the vdd pin. since the NCS2300 has built in latch-up immunity up to 800 ma, series resistors are not recommended on vdd. audio jack detection the NCS2300 is designed to simplify the detection of a stereo audio connector with a microphone contact. when the headset is not connected, the internal pull?up resistors on l_detect and gnd_detect pull those pins high. when the headset is connected to the switched audio jack, the headset ground and left audio channel trigger l_detect and gnd_detect to logic low. the NCS2300 can work with either the ctia or omtp standard. in order to support both standards simultaneously, a cross point switch and additional circuitry is necessary to detect and swap the ground and microphone pins. mic pin biasing the typical application schematic in figure 1 shows the recommended 2.2 k pull?up resistor to the mic bias voltage. the mic bias voltage can exceed vdd and can go as high as 3 v. while the headset is not detected, the internal nmos transistor is enabled to mute the mic signal. in the typical application scenario with a 2.2 k pull?up to a 2.3 v mic bias voltage, the mic pin is pulled near 1 mv when the headset is not present. the internal nmos transistor is optimized to sink up to 2 ma of current, allowing some flexibility in the selection of the pull?up resistor and mic bias voltage.
NCS2300 http://onsemi.com 7 package dimensions udfn6, 1.2x1.0, 0.4p case 517aa issue d notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. dimension b applies to plated terminal and is measured between 0.25 and 0.30 mm from terminal. 4. coplanarity applies to the exposed pad as well as the terminals. a b e d bottom view b e 6x 0.10 b 0.05 a c c l 5x note 3 2x 0.10 c pin one reference top view 2x 0.10 c 10x a a1 (a3) 0.08 c 0.10 c c seating plane side view l2 1 3 4 6 dim min max millimeters a 0.45 0.55 a1 0.00 0.05 a3 0.127 ref b 0.15 0.25 d 1.20 bsc e 1.00 bsc e 0.40 bsc l 0.30 0.40 l1 0.00 0.15 mounting footprint* dimensions: millimeters 0.22 6x 0.42 6x 1.07 0.40 pitch *for additional information on our pb?free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. l1 detail a bottom view (optional) 0.40 0.50 on semiconductor and are registered trademarks of semiconductor co mponents industries, llc (scillc). scillc owns the rights to a numb er of patents, trademarks, copyrights, trade secrets, and other inte llectual property. a listing of scillc?s pr oduct/patent coverage may be accessed at ww w.onsemi.com/site/pdf/patent?marking.pdf. scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including without limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/ or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typical s? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the right s of others. scillc products are not designed, intended, or a uthorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in whic h the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or us e scillc products for any such unintended or unauthorized appli cation, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unin tended or unauthorized use, even if such claim alleges that scil lc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyrig ht laws and is not for resale in any manner. p ublication ordering information n. american technical support : 800?282?9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81?3?5817?1050 NCS2300/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303?675?2175 or 800?344?3860 toll free usa/canada fax : 303?675?2176 or 800?344?3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your loc al sales representative
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