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1 ? fn7059 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 321-724-7143 | intersil (and design) is a registered trademark of intersil americas inc. copyright ? intersil americas inc. 2003. all rights reserved. elantec is a registered trademark of elantec semiconductor, inc. all other trademarks mentioned are the property of their respective owners. el2244, EL2444 dual/quad low-power 120mhz unity-gain stable op amp the el2244 and EL2444 are dual and quad versions of the popular el2044. they are high speed, low power, low cost monolithic operational amplifiers built on elantec's proprietary complementary bipolar process. the el2244 and EL2444 are unity-gain stable and feature a 325v/s slew rate and 120mhz gain-bandwidth product while requiring only 5.2ma of supply current per amplifier. the power supply operating range of the el2244 and EL2444 is from 18v down to as little as 2v. for single- supply operation, the el2244 and EL2444 operate from 36v down to as little as 2.5v. the excellent power supply operating range of the el2244 and EL2444 makes them an obvious choice for applications on a single +5v or +3v supply. the el2244 and EL2444 also feature an extremely wide output voltage swing of 13.6v with v s = 15v and r l =1k ? . at 5v, output voltage swing is a wide 3.8v with r l = 500 ? and 3.2v with r l = 150 ? . furthermore, for single-supply operation at +5v, output voltage swing is an excellent 0.3v to 3.8v with r l = 500 ? . at a gain of +1, the el2244 and EL2444 have a -3db bandwidth of 120mhz with a phase margin of 50. because of their conventional voltage-feedback topology, the el2244 and EL2444 allow the use of reactive or non-linear elements in their feedback network. this versatility combined with low cost and 75ma of output-current drive make the el2244 and EL2444 an ideal choice for price-sensitive applications requiring low power and high speed. features 120mhz gain-bandwidth product unity-gain stable low supply current (per amplifier) - 5.2ma at v s = 15v wide supply range - 2.5v to 36v high slew rate - 325v/s fast settling - 80ns to 0.1% for a 10v step low differential gain - 0.04% at a v =+2, r l = 150 ? low differential phase - 0.15 at a v = +2, r l = 150 ? wide output voltage swing - 13.6v with v s = 15v, r l =1k ? low cost, enhanced replacement for the ad827 & lt1229/lt1230 applications video amplifiers single-supply amplifiers active filters/integrators high speed signal processing adc/dac buffers pulse/rf amplifiers pin diode receivers log amplifiers ordering information part number package tape & reel pkg. no. el2244cn 8-pin pdip - mdp0031 el2244cs 8-pin so - mdp0027 el2244cs-t7 8-pin so 7? mdp0027 el2244cs-t13 8-pin so 13? mdp0027 EL2444cn 14-pin pdip - mdp0031 EL2444cs 14-pin so (0.150") - mdp0027 EL2444cs-t7 14-pin so (0.150") 7? mdp0027 EL2444cs-t13 14-pin so (0.150") 13? mdp0027 data sheet august 16, 2002
2 pinouts el2244 (8-pin so, pdip) top view EL2444 [14-pin so (0.150?), pdip] top view 1 2 3 4 8 7 6 5 - + - + out in1- in1+ v- v+ out2 i n2- in2+ 1 2 3 4 14 13 12 11 5 6 7 10 9 8 out1 in1- in1+ v+ out4 in4- in4+ v- in2+ in2- out2 i n3+ in3- out3 -+ - + -+ - + el2244, EL2444
3 absolute maximum ratings (t a = 25c) supply voltage (v s ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18v or 36v input voltage (v in) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v s differential input voltage (dv in ) . . . . . . . . . . . . . . . . . . . . . . . . .10v continuous output current . . . . . . . . . . . . . . . . . . . . . . . . . . . 40ma power dissipation (p d ) . . . . . . . . . . . . . . . . . . . . . . . . . see curves operating temperature range (t a ) . . . . . . . . . . . . . .-40c to +85c operating junction temperature (t j ) . . . . . . . . . . . . . . . . . . +150c storage temperature (t st ) . . . . . . . . . . . . . . . . . . .-65c to +150c caution: stresses above those listed in ?a bsolute maximum ratings? may cause permanent damage to the device. this is a stress o nly rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. important note: all parameters having min/max specifications are guaranteed. typical values are for information purposes only. u nless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: t j = t c = t a dc electrical specifications v s = 15v, r l = 1k ? , unless otherwise specified. parameter description condition temp min typ max unit v os input offset voltage v s = 15v 25c 0.5 4.0 mv t min , t max 9.0 mv tcv os average offset voltage drift (note 1) all 10.0 v/c i b input bias current v s = 15v 25c 2.8 8.2 a t min , t max 11.2 a v s = 5v 25c 2.8 a i os input offset current v s = 15v 25c 50 300 na t min , t max 500 na v s = 5v 25c 50 na tci os average offset current drift (note 1) all 0.3 na/c a vol open-loop gain v s = 15v, v out = 10v, r l = 1k ? 25c 800 1500 v/v t min , t max 600 v/v v s = 5v, v out = 2.5v, r l = 500 ? 25c 1200 v/v v s = 5v, v out = 2.5v, r l = 150 ? 25c 1000 v/v psrr power supply rejection ratio v s = 5v to 15v 25c 65 80 db t min , t max 60 db cmrr common-mode rejection ratio v cm = 12v, v out = 0v 25c 70 90 db t min , t max 70 db cmir common-mode input range v s = 15v 25c 14.0 v v s = 5v 25c 4.2 v v s = +5v 25c 4.2/0.1 v v out output voltage swing v s = 15v, r l = 1k ? 25c 13.4 13.6 v t min , t max 13.1 v v s = 15v, r l = 500 ? 25c 12.0 13.4 v v s = 5v, r l = 500 ? 25c 3.4 3.8 v v s = 5v, r l = 150 ? 25c 3.2 v v s = +5v, r l = 500 ? 25c 3.6/0.4 3.8/0.3 v t min , t max 3.5/0.5 v i sc output short circuit current 25c 40 75 ma t min , t max 35 ma el2244, EL2444
4 i s supply current (per amplifier) v s = 15v, no load 25c 5.2 7 ma t min 7.6 ma t max 7.6 ma v s = 5v, no load 25c 5.0 ma r in input resistance differential 25c 150 k ? common-mode 25c 15 m ? c in input capacitance a v = +1 @10mhz 25c 1.0 pf r out output resistance a v = +1 25c 50 m ? psor power-supply operating range dual-supply 25c 2.0 18.0 v single-supply 25c 2.5 36.0 v note: 1. measured from t min to t max . dc electrical specifications v s = 15v, r l = 1k ? , unless otherwise specified. (continued) parameter description condition temp min typ max unit closed-loop ac electrical specifications v s = 15v, a v = +1, r l = 1k ? , unless otherwise specified. parameter description condition temp min typ max unit bw -3db bandwidth (v out = 0.4v pp ) v s = 15v, a v = +1 25c 120 mhz v s = 15v, a v = -1 25c 60 mhz v s = 15v, a v = +2 25c 60 mhz v s = 15v, a v = +5 25c 12 mhz v s = 15v, a v = +10 25c 6 mhz v s = 5v, a v = +1 25c 80 mhz gbwp gain-bandwidth product v s = 15v 25c 60 mhz v s = 5v 25c 45 mhz pm phase margin r l = 1k ? , c l = 10pf 25c 50 cs channel separation f = 5mhz 25c 85 db sr slew rate (note 1) v s = 15v, r l = 1k ? 25c 250 325 v/s v s = 5v, r l = 500 ? 25c 200 v/s fpbw full-power bandwidth (note 2) v s = 15v 25c 4.0 5.2 mhz v s = 5v 25c 12.7 mhz t r , t f rise time, fall time 0.1v step 25c 3.0 ns os overshoot 0.1v step 25c 20 % t pd propagation delay 25c 2.5 ns t s settling to +0.1% (a v = +1) v s = 15v, 10v step 25c 80 ns v s = 5v, 5v step 25c 60 ns dg differential gain (note 3) ntsc/pal 25c 0.04 % dp differential phase (note 3) ntsc/pal 25c 0.15 en input noise voltage 10khz 25c 15.0 nv/ hz in input noise current 10khz 25c 1.50 pa/ hz notes: 1. slew rate is measured on rising edge 2. for v s = 15v, v out = 20v pp . for v s = 5v, v out = 5v pp . full-power bandwidth is based on slew rate measurement using: fpbw = sr / (2 * vpeak). 3. video performance measured at v s = 15v, a v = +2 with 2 times normal video level across r l = 150 ? . this corresponds to standard video levels across a back-terminated 75 ? load. for other values of r l , see curves. el2244, EL2444
5 typical performance curves non-inverting frequency response inverting fre quency response frequency response for various load resistances equivalent input noise settling time vs output voltage change 2nd and 3rd harmonic distortion vs frequency cmrr, psrr and closed-loop output resistance vs frequency open-loop gain and phase vs frequency output voltage swing vs frequency common-mode input range vs supply voltage supply current vs supply voltage output voltage range vs supply voltage el2244, EL2444
6 typical performance curves (continued) gain-bandwidth product vs supply voltage open-loop gain vs supply voltage slew-rate vs supply voltage bias and offset current vs input common-mode voltage open-loop gain vs load resistance voltage swing vs load resistance supply current vs temperature bias and offset current vs temperature offset voltage vs temperature gain-bandwidth product vs temperature open-loop gain, psrr and cmrr vs temperature slew rate vs temperature short-circuit current vs temperature large-signal step response small-signal step response el2244, EL2444
7 typical performance curves (continued) differential gain and phase vs dc input offset at 3.58mhz differential gain and phase vs dc input offset at 4.43mhz differential gain and phase vs number of 150 ? loads at 3.58mhz differential gain and phase vs number of 150 ? loads at 4.43mhz channel separation vs frequency gain-bandwidth product vs load capacitance 60 50 40 30 20 10 0 110 10k 100 1k load capacitance (pf) gain-bandwidth product (mhz) v s =15v a v =-2 package power dissipation vs ambient temperature jedec jesd51-3 low effective thermal conductivity test board 1.8 1.6 1.2 0.8 0.6 0.4 0.2 0 0 255075100 150 ambient temperature (c) power dissipation (w) 85 1.54w 1.25w 1.042w 781mw 125 1.4 1 so8 ja =160c/w so14 ja =120c/w pdip14 ja =81c/w pdip8 ja =100c/w package power dissipation vs ambient temperature jedec jesd51-7 high effective thermal conductivity test board 2 1.8 1.6 1.4 1.2 0.8 0.4 0 0 255075100 150 ambient temperature (c) power dissipation (w) 85 1.786w 1.471w 125 1 0.6 0.2 1.420w 1.136w so8 ja =110c/w so14 ja =88c/w pdip14 ja =70c/w pdip8 ja =85c/w overshoot vs loa d capacitance 60 50 40 30 20 10 0 510 30 50 15 35 25 45 20 40 load capacitance (pf) overshoot (%) v s =15v r g =open el2244, EL2444
8 simplified schematic (per amplifier) burn-in circuit (per amplifier) applications information product description the el2244 and EL2444 are low-power wideband monolithic operational amplifiers built on elantec's proprietary high-speed complem entary bipolar process. the el2244 and EL2444 use a classical voltage-feedback topology which allows them to be used in a variety of applications where current-fee dback amplifiers are not appropriate because of restrictions placed upon the feedback element used with the amplifier. the conventional topology of the el2244 and EL2444 allows, for example, a capacitor to be placed in the feedback path, making it an excellent choice for applications such as active filters, sample-and-holds, or integrators. similarly, because of the ability to use diodes in the feedback network, the el2244 and EL2444 are an excellent choice for applications such as fast log amplifiers. power dissipation with the wide power supply range and large output drive capability of the el2244 and el24 44, it is possible to exceed the 150c maximum junction temperatures under certain load and power-supply conditions. it is therefore important to calculate the maximum junction temperature (t jmax ) for all applications to determine if power supply voltages, load conditions, or package type need to be modified for the el2244 and EL2444 to remain in the safe operating area. these parameters are related as follows: where: pd maxtotal is the sum of the maximum power dissipation of each amplifier in the package (pd max ). pd max for each amplifier can be calculated as follows: where: t max = maximum ambient temperature ja = thermal resistance of the package pd max = maximum power dissipation of each amplifier v s = supply voltage i smax = maximum supply current of each amplifier v outmax = maximum output voltage swing of the application r l = load resistance to serve as a guide for the user, we can calculate maximum allowable supply voltages for the example of the video cable- driver below since we know that t jmax = 150c, t max = 85c, i smax = 7.6ma per amplifier, and the package ja s are shown in table 1. if we assume (for this example) that we are driving a back-terminated video cable, then the maximum average value (over duty-cycle) of v outmax is 1.4v, and r l = 150 ? , giving the results seen in table 1. single-supply operation the el2244 and EL2444 have been designed to have a wide input and output voltage range. this design also makes the el2244 and EL2444 an excellent choice for single- supply operation. using a single positive supply, the lower input voltage range is within 100mv of ground (r l = 500 ? ), all packages use the same schematic table 1. part package ja max pdiss @ t max max v s duals el2244cn pdip8 100c/w 0.650w @85c 16.6v el2244cs so8 160c/w 0.406w @85c 10.5v quads EL2444cn pdip14 81c/w 0.802w @85c 11.5v EL2444cs so14 120c/w 0.542w @85c 7.5v t jmax t max ja pd maxtotal () + = pd max 2v s i smax v s ( - v outmax ) v outmax r l ---------------------------- + = el2244, EL2444
9 and the lower output voltage range is within 300mv of ground. upper input voltage range reaches 4.2v, and output voltage range reaches 3.8v with a 5v supply and r l = 500 ? . this results in a 3.5v output swing on a single 5v supply. this wide output voltage range also allows single-supply operation with a supply voltage as high as 36v or as low as 2.5v. on a single 2.5v supply, the el2244 and EL2444 still have 1v of output swing. gain-bandwidth product and the -3db bandwidth the el2244 and EL2444 have a gain-bandwidth product of 120mhz while using only 5.2m a of supply current per amplifier. for gains greater than 4, their closed-loop -3db bandwidth is approximately equal to the gain-bandwidth product divided by the noise gain of the circuit. for gains less than 4, higher-order poles in the amplifiers' transfer function contribute to even higher closed loop bandwidths. for example, the el2244 and EL2444 have a -3db bandwidth of 120mhz at a gain of +1, dropping to 60mhz at a gain of +2. it is important to note that the el2244 and EL2444 have been designed so that this ?extra? bandwidth in low-gain applications does not come at the expense of stability. as seen in the typical performance curves, the el2244 and EL2444 in a gain of +1 only exhibit 1.0db of peaking with a 1k ? load. video performance an industry-standard method of measuring the video distortion of components such as the el2244 and EL2444 is to measure the amount of differential gain (dg) and differential phase (dp) that they introduce. to make these measurements, a 0.286v pp (40 ire) signal is applied to the device with 0v dc offset (0 ire) at either 3.58mhz for ntsc or 4.43mhz for pal. a second measurement is then made at 0.714v dc offset (100 ire). differential gain is a measure of the change in amplitude of the sine wave, and is measured in percent. differential phase is a measure of the change in phase, and is measured in degrees. for signal transmission and distribution, a back-terminated cable (75 ? in series at the drive end, and 75 ? to ground at the receiving end) is preferre d since the impedance match at both ends will absorb any reflections. however, when double termination is used, the received signal is halved; therefore a gain of 2 configuration is typically used to compensate for the attenuation. the el2244 and EL2444 have been designed as an economical solution for applications requiring low video distortion. they have been thoroughly characterized for video performance in the topology described above, and the results have been included as typical dg and dp specifications and as typical pe rformance curves. in a gain of +2, driving 150 ? , with standard video test levels at the input, the el2244 and EL2444 exhibit dg and dp of only 0.04% and 0.15 at ntsc and pa l. because dg and dp can vary with different dc offsets, the video performance of the el2244 and EL2444 has been characterized over the entire dc offset range from -0.714v to +0.714v. for more information, refer to the curves of dg and dp vs dc input offset. output drive capability the el2244 and EL2444 have been designed to drive low impedance loads. they can easily drive 6v pp into a 150 ? load. this high output drive capability makes the el2244 and EL2444 an ideal choice for rf, if and video applications. furthermore, the current drive of the el2244 and EL2444 remains a minimum of 35ma at low temperatures. printed-circuit layout the el2244 and EL2444 are well behaved, and easy to apply in most applications. however, a few simple techniques will help assure rapid, high quality results. as with any high-frequency device, good pcb layout is necessary for optimum performance. ground-plane construction is highly recommended, as is good power supply bypassing. a 0.1f ceramic capacitor is recommended for bypassing both supplies. lead lengths should be as short as possible, and bypass capacitors should be as close to the device pins as possible. for good ac performance, parasitic capacitances should be kept to a minimum at both inputs and at the output. resistor values should be kept under 5k ? because of the rc time constants associated with the parasitic capacitance. metal-film and carbon resistors are both ac ceptable, use of wire-wound resistors is not recommended because of their parasitic inductance. similarly, capacitors should be low-inductance for best performance. the el2244 and EL2444 macromodel this macromodel has been developed to assist the user in simulating the el2244 and EL2444 with surrounding circuitry. it has been developed for the pspice simulator (copywritten by the microsim corporation), and may need to be rearranged for other simulators. it approximates dc, ac, and transient response for resistive loads, but does not accurately model capacitive loading. this model is slightly more complicated than the models used for low-frequency op-amps, but it is much more accurate for ac analysis. the model does not simulate these characteristics accurately: noise settling time non-linearities temperature effects manufacturing variations cmrr psrr el2244, EL2444
10 el2244 and el244c macromodel * connections: +input * | -input * | | +vsupply * | | | -vsupply * | | | | output * | | | | | .subckt m2244 3 2 7 4 6 * * input stage * ie 7 37 1ma r6 36 37 800 r7 38 37 800 rc1 4 30 850 rc2 4 39 850 q1 30 3 36 qp q2 39 2 38 qpa ediff 33 0 39 30 1.0 rdiff 33 0 1meg * * compensation section * ga 0 34 33 0 1m rh 34 0 2meg ch 34 0 1.3pf rc 34 40 1k cc 40 0 1pf * * poles * ep 41 0 40 0 1 rpa 41 42 200 cpa 42 0 1pf rpb 42 43 200 cpb 43 0 1pf * * output stage * ios1 7 50 1.0ma ios2 51 4 1.0ma q3 4 43 50 qp q4 7 43 51 qn q5 7 50 52 qn q6 4 51 53 qp ros1 52 6 25 ros2 6 53 25 * * power supply current * ips 7 4 2.7ma * * models * .model qn npn(is=800e-18 bf=200 tf=0.2ns) .model qpa pnp(is=864e-18 bf=100 tf=0.2ns) .model qp pnp(is=800e-18 bf=125 tf=0.2ns) .ends el2244, EL2444
11 el2244 and EL2444 macromodel (continued) el2244, EL2444 all intersil u.s. products are manufactured, asse mbled and tested utilizin g iso9000 quality systems. intersil corporation?s quality certifications c an be viewed at www.intersil.com/design/quality intersil products are sold by description only. intersil corporation reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnishe d by intersil is believed to be accurate and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of paten ts or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of intersil or its subsidiari es. for information regarding intersil corporation and its products, see www.intersil.com

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