high speed, single supply, rail-to-rail output, triple op amp preliminary technical data ada4855-3 rev. prb information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2008 analog devices, inc. all rights reserved. features voltage feedback architecture high speed 400 mhz, ?3 db bandwidth, g = 1 190 mhz, ?3 db bandwidth, g = 2 800 v/s slew rate 0.1 db bandwidth flatness out to 63 mhz, g = 1 6 ns settling time to 1% with 2 v step high input common-mode voltage range v ee ? 0.2 v to v cc ? 1 v rail-to-rail output swing: 0.2 v to 4.85 v operates on 3.3 v to 5 v supplies low offset voltage: 1 mv excellent video specifications (r l = 150 , g = 2) differential gain error: 0.01% differential phase error: 0.01 low power, 7.7ma/amplifier typical supply current available in 16-lead lfcsp applications professional video consumer video imaging industrial instrumentation professional videos and cameras base stations filters general description the ada4855-3 is a single-supply, rail-to-rail output amplifier. it provides excellent overall performance with a wide ?3 db bandwidth out to 400 mhz and a fast slew rate of 800 v/s. it has a wide input common-mode voltage range that extends 0.2 v below ground and 1 v below the positive rail. in addition, the output voltage swings within 200 mv of either supply rail, making these op amps easy to use on a single-supply voltage as low as 3.3 v. for video applications, the differential gain and phase errors are 0.01% and 0.01 into a 150 load, along with 0.1 db flatness out to 63 mhz. the ada4855-3 offers a typical low power of 7.7 ma per amplifier, while being capable of delivering up to 40 ma of load current. it has a power-down feature that reduces the supply current down to 1 ma. connection diagram 1 2 +in2 nc +in3 ?in3 out3 ?v s +in1 ?in1 out1 ?v s pd nc 3 4 11 out2 12 +v s 10 ?in2 9 5678 16 15 14 13 +v s 07685-001 notes 1. nc = no connect. 2. exposed pad connected to ?v s . ada4855-3 figure 1. ada4855-3 figure 2.frequency response, g = 1 the ada4855-3 is available in a 16-lead lfcsp and is designed to work over the extended industrial temperature range of ?40c to +105c.
ada4855-3 preliminary technical data rev. prb | page 2 of 7 table of contents features .............................................................................................. 1 applications....................................................................................... 1 general description ......................................................................... 1 connection diagram ....................................................................... 1 revision history ............................................................................... 2 specifications..................................................................................... 3 absolute maximum ratings............................................................ 5 thermal resistance ...................................................................... 5 maximum power dissipation ......................................................5 esd caution...................................................................................5 pin configuration and function descriptions..............................6 outline dimensions ..........................................................................7 ordering guide .............................................................................7 revision history 9/08revision prb: specs version 8/08revision pra: initial version
preliminary technical data ada4855-3 rev. prb | page 3 of 7 specifications t a = 25c, v s = 5 v, r l = 150 , unless otherwise noted. table 1. parameter conditions min typ max unit dynamic performance ?3 db bandwidth g = 1, v o = 0.2 v p-p 400 mhz g = 1, v o = 2 v p-p 210 mhz g = 2, v o = 0.2 v p-p 190 mhz g = 2, v o = 2 v p-p 115 mhz bandwidth for 0.1 db flatness g = 1, v o = 2 v p-p 63 mhz g = 2, v o = 2 v p-p 30 mhz slew rate g = 1, v o = 2 v step 800 v/s settling time to 1% g = 1, v o = 2 v step tbd ns g = 2, v o = 2 v step 6 ns noise/distortion performance total harmonic distortion f c = 5 mhz, v o = 2 v p-p tbd dbc f c = 20 mhz, v o = 2 v p-p tbd dbc crosstalk, output to output f = 5 mhz, g = 2 ?65 dbc input voltage noise f = 100 khz 6.5 nv/hz input current noise f = 100 khz tbd pa/hz differential gain error g = 2 0.01 % differential phase error g = 2 0.01 degrees dc performance input offset voltage 1 3 mv input offset voltage drift tbd v/c input bias current 4.5 a input offset current 0.05 a open-loop gain v o = 0.5 v to 4.5 v 90 db input characteristics input resistance tbd m input capacitance tbd pf input common-mode voltage range v ee ? 0.2 v cc ? 1 v common-mode rejection ratio v cm = C0.2 v to +4 v tbd db output characteristics output voltage swing 0.2 4.85 v maximum output current 40 ma power-down turn-on time 100 ns enable voltage, on 3.75 v power supply operating range 3 5.5 v quiescent current per amplifier 7.7 ma supply current when disabled 1 ma power supply rejection ratio ?v s = 1.3 v to 4.5 v tbd db
ada4855-3 preliminary technical data rev. prb | page 4 of 7 t a = 25c, v s = 3.0 v, r l = 150 , v o = 2 v, unless otherwise noted. table 2. parameter conditions min typ max unit dynamic performance ?3 db bandwidth g = 1, v o = 0.2 v p-p mhz g = 1, v o = 2 v p-p mhz g = 2, v o = 0.2 v p-p mhz g = 2, v o = 2 v p-p mhz g = 2, v o = 2 v p-p mhz bandwidth for 0.1 db flatness g = 2, v o = 2 v p-p mhz slew rate g = 2, v o = 2 v step v/s settling time to 1% g = 2, v o = 2 v step ns noise/distortion performance total harmonic distortion f c = 5 mhz, v o = 2 v p-p dbc f c = 20 mhz, v o = 2 v p-p dbc crosstalk, output to output f = 5 mhz, g = 2 dbc input voltage noise f = 100 khz nv/hz input current noise f = 100 khz pa/hz differential gain error g = 2 % differential phase error g = 2 degrees dc performance input offset voltage mv input offset voltage drift v/c input bias current a input offset current a open-loop gain v o = 0.5 v to 4.5 v db input characteristics input resistance m input capacitance pf input common-mode voltage range v common-mode rejection ratio v cm = C0.2 v to +3.2 v db output characteristics output voltage swing, load resistance v output current v o = 0.5 v to 4.5 v ma power-down disable turn-on time ns enable voltage, on v power supply operating range v quiescent current per amplifier ma supply current when disabled a power supply rejection ratio ?v s = 1.3 v to 1.5 v db
preliminary technical data ada4855-3 rev. prb | page 5 of 7 absolute maximum ratings table 3. parameter rating supply voltage 6 v internal power dissipation 1 see figure 3 common-mode input voltage (?v s ? 0.2 v) to (+v s ? 1 v) differential input voltage v s output short-circuit duration observe power curves storage temperature range ?65c to +125c operating temperature range ?40c to +105c lead temperature (soldering, 10 sec) 300c 1 specification is for device in free air. stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. thermal resistance ja is specified for the worst-case conditions, that is, ja is specified for device soldered in circuit board for surface-mount packages. table 4. package type ja jc unit 16-lead lfcsp 67 17.5 c/w maximum power dissipation the maximum power that can be safely dissipated by the ada4855-3 is limited by the associated rise in junction temperature. the maximum safe junction temperature for plastic encapsulated devices is determined by the glass transition temperature of the plastic, approximately 150c. temporarily exceeding this limit may cause a shift in parametric performance due to a change in the stresses exerted on the die by the package. exceeding a junction temperatur e of 175c for an extended period can result in device failure. while the ada4855-3 is internally short-circuit protected, this may not be sufficient to guarantee that the maximum junction temperature (150c) is not exceeded under all conditions. to ensure proper operation, it is necessary to observe the maximum power derating curves. 3.0 2.5 2.0 1.5 1.0 0.5 0 07685-103 maximum power dissipation (w) ambient temperature (c) ?40 ?30 ?20 ?10 0 10 20 30 40 50 60 70 80 90 100 110 120 figure 3. maximum power dissipation vs. ambient temperature esd caution
ada4855-3 preliminary technical data rev. prb | page 6 of 7 pin configuration and fu nction descriptions notes 1. nc = no connect. 2. exposed pad connected to ?v s . 1 nc 2 +in2 3 nc 4 pd 11 out2 12 +v s 10 ?in2 9+v s 5 +in3 6 ?in3 7 out3 8 ?v s 15 ?in1 16 +in1 14 out1 13 ?v s 07685-003 ada4855-3 top view (not to scale) figure 4. pin configuration table 5. pin function descriptions pin o. neonic description 1 nc no connect 2 +in2 noninverting input 2 3 nc no connect 4 pd power down 5 +in3 noninverting input 3 6 ?in3 inverting input 3 7 out3 output 3 8 ?v s negative supply 9 +v s positive supply 10 ?in2 inverting input 2 11 out2 output 2 12 +v s positive supply 13 ?v s negative supply 14 out1 output 1 15 ?in1 inverting input 1 16 +in1 noninverting input 1 ep epad exposed pad. must be connected to ?v s .
preliminary technical data ada4855-3 rev. prb | page 7 of 7 outline dimensions compliant to jedec standards mo-220-vggc 2 . 2 5 2 . 1 0 s q 1 . 9 5 16 5 13 8 9 12 1 4 1.95 bsc pin 1 indicator top view 4.00 bsc sq 3.75 bsc sq coplanarity 0.08 (bottom view) 12 max 1.00 0.85 0.80 seating plane 0.35 0.30 0.25 0.80 max 0.65 typ 0.05 max 0.02 nom 0.20 ref 0.65 bsc 0.60 max 0.60 max pin 1 indicator 0.25 min 072808-a 0.75 0.60 0.50 for proper connection of the exposed pad, refer to the pin configuration and function descriptions section of this data sheet. figure 5.16-lead lead frame chip scale package [lfcsp_vq] 4 mm 4 mm body, very thin quad (cp-16-4) dimensions shown in millimeters ordering guide model temperature range package descript ion package option ordering quantity ada4855-3acpz-r2 1 C40c to +105c 16-lead lfcsp_vq cp-16-4 250 ADA4855-3ACPZ-R7 1 C40c to +105c 16-lead lfcsp_vq cp-16-4 1,500 ada4855-3acpz-rl 1 C40c to +105c 16-lead lfcsp_vq cp-16-4 5,000 1 z = rohs compliant part. ?2008 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. pr07685-0-9/08(prb)
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