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february 2012 ? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier fan4174 / fan4274 single and dual, ultra-low cost, rail-to-rail i/o, cmos amplifier features ? 200a supply current per amplifier ? 3.7mhz bandwidth ? output swing to within 10mv of either rail ? input voltage range ex ceeds the rails ? 3v/s slew rate ? 25nv/ ? hz input voltage noise ? replaces km4170 and km4270 ? fan4174 competes with opa340 and tlv2461; available in a sot23-5 package ? fan4274 competes with opa2340 and tlv2462; available in msop-8 package ? fully specified at +2.7v and +5v supplies applications ? portable / battery-powered applications ? pcmcia, usb ? mobile communications, cellular phones, pagers ? notebooks and pdas ? sensor interface ? a/d buffer ? active filters ? signal conditioning ? portable test instruments description the fan4174 (single) and fan4274 (dual) are ultra-low cost voltage feedback amplifiers with cmos inputs that consume only 200a of supply current per amplifier, while providing 33ma of output short-circuit current. these amplifiers are designed to operate from 2.3v to 5v supplies. the common mode voltage range extends beyond the negative and positive rails. the fan4174 and fan4274 are designed on a cmos process and provide 3.7m hz of bandwidth and 3v/ s of slew rate at a supply voltage of 5v. the combination of low power, rail-to-rail performance, low-voltage operation, and tiny package opti ons make this amplifier family well suited for use in many general-purpose and battery-powered applications. figure 1. frequency vs. gain ordering information part number operating temperature range package packing method fan4174is5x -40 to +85c 5-lead so t23 package tape and reel (3000) fan4274imu8x -40 to +85c 8-lead molded sm all-outline package tape and reel (3000)
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 2 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier typical application figure 2. typical application circuit pin configurations figure 3. fan4174 sot23 figure 4. fan4274 msop fan4174 pin assignments pin # name description 1 out output 2 -v s negative supply 3 +in positive supply 4 -in negative input 5 +v s positive supply fan4274 pin assignments pin # name description 1 out1 output, channel 1 2 -in1 negative input, channel 1 3 +in1 positive input, channel 1 4 -v s negative supply 5 +in2 positive input, channel 2 6 -in2 negative input, channel 2 7 out2 output, channel 2 8 +v s positive supply
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 3 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the devic e may not function or be operable above the recommended operating c onditions and stressing the parts to these levels is not recommended. in addition, extended exposure to stre sses above the recommended operating conditi ons may affect device reliability. the absolute maximum ratings are stress ratings only. f unctional operation under any of these conditions is not implied. performance and reliab ility are guaranteed only if operating conditions are not exceeded. symbol parameter min. max. unit v cc supply voltage 0 6 v v in input voltage range -v s -0.5 +v s +0.5 v t j junction temperature +150 c t stg storage temperature -65 +150 c t l lead soldering, 10 seconds +300 c ? ja thermal resistance (1) 5-lead sot23 256 c/w 8-lead msop 206 note: 1. package thermal resistance jedec standar d, multi-layer test boards, still air. recommended operating conditions the recommended operating conditions table defines the conditions for actual device oper ation. recommended operating conditions are specified to ens ure optimal performance to the datasheet specificat ions. fairchild does not recommend exceeding them or designing to absolute maximum ratings. symbol parameter min. max. unit +v s supply voltage 2.30 5.25 v t a operating temperat ure range -40 +85 c
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 4 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier electrical specifications at +2.7v v s =+2.7v, g=2, r l =10k ? to v s /2, r f =5k ? ; unless otherwise noted . symbol parameter conditions min. typ. max. units frequency domain response ugbw -3db bandwidth g=+1 4.0 mhz bw ss 2.5 mhz gbwp gain bandwidth product 4 mhz time domain response t r , f f rise and fall time v o =1.0v step 300 ns os overshoot v o =1.0v step 5 % sr slew rate v o =3v step, g=-1 3 v/s distortion and noise response hd2 2nd harmonic distortion v o =1v pp , 10khz -66 dbc hd3 3rd harmonic distortion v o =1v pp , 10khz -67 dbc thd total harmonic distortion v o =1v pp , 10khz 0.1 % e n input voltage noise 26 nv/ ? hz x talk crosstalk (fan4274) 100khz -100 db dc performance v io input offset voltage (2) -6 0 +6 mv dv io average drift 2.1 v/c i bn input bias current 5 pa psrr power supply rejection ratio (2) dc 50 73 db a ol open-loop gain dc 98 db i s supply current per amplifier (2) 200 300 a input characteristics r in input resistance 10 g ? c in input capacitance 1.4 pf cmir input common mode voltage range -0.3 to 2.8 v cmrr common mode rejection ratio (2) fan4174 dc, v cm =ov to 2.2v 50 65 db fan4274 dc, v cm =ov to 2.2v 50 65 output characteristics v o output voltage swing (2) r l =10k ? to v s /2 0.03 0.01 to 2.69 2.65 v r l =1k ? to v s /2 0.05 to 2.55 i sc short circuit output current +34/-12 ma v s power supply operating range 2.5 to 5.5 v note: 2. 100% tested at 25c.
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 5 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier electrical specifications at +5v v s =+5v, g=2, r l =10k ? to v s /2, r f = 5k ? ; unless otherwise noted . symbol parameter conditions min. typ. max. units frequency domain response ugbw -3db bandwidth g=+1 3.7 mhz bw ss 2.3 mhz gbwp gain bandwidth product 3.7 mhz time domain response t r , f f rise and fall time v o =1.0v step 300 ns os overshoot v o =1.0v step 5 % sr slew rate v o =3v step, g=-1 3 v/s distortion and noise response hd2 2nd harmonic distortion v o =1v pp , 10khz -80 dbc hd3 3rd harmonic distortion v o =1v pp , 10khz -80 dbc thd total harmonic distortion v o =1v pp , 10khz 0.02 % e n input voltage noise 25 nv/ ? hz x talk crosstalk (fan4274) 100khz -100 db dc performance v io input offset voltage (3) -8 0 +8 mv dv io average drift 2.9 v/c i bn input bias current 5 pa psrr power supply rejection ratio (3) dc 50 73 db a ol open-loop gain dc 102 db i s supply current per amplifier (3) 200 300 a input characteristics r in input resistance 10 g ? c in input capacitance 1.2 pf cmir input common mode voltage range -0.3 to 5.1 v cmrr common mode rejection ratio (3) dc, v cm =0v to v s 58 73 db output characteristics v o output voltage swing (3) r l =10k ? to v s /2 0.03 0.01 to 4.99 4.95 v r l =1k ? to v s /2 0.1 to 4.9 i sc short circuit output current 33 ma v s power supply operating range 2.5 to 5.5 v note: 3. 100% tested at 25c.
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 6 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier typical performance characteristics v s =+2.7, g=2, r l =10k ?? to v s /2, r f =5k ? ; unless otherwise noted. figure 5. non-inverting frequency response (+5) figure 6. inverting frequency response (+5v) figure 7. non-inverting frequency respon se figure 8. inverting frequency response figure 9. frequency response vs. c l figure 10. frequency response vs. r l figure 11. large signal frequency response (+5v) figure 12. open-l oop gain and phase vs. frequency
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 7 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier typical performance characteristic v s =+2.7, g=2, r l =10k ?? to v s /2, r f =5k ? ; unless otherwise noted. figure 13. 2nd and 3rd harmonic distortion figure 14. 2nd harmonic distortion vs. v o figure 15. 3rd harmonic distortion vs. v o figure 16. cmrr v s =5v figure 17. psrr v s =5v figure 18. output swing vs. load figure 19. pulse response vs. common-mode voltage figure 20. input voltage noise
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 8 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier application information general description the fan4174 amplifier includes single-supply, general- purpose, voltage-feedback amplif iers, fabricated on a bi- cmos process. the family features a rail-to-rail input and output and is unity gain stable. the typical non- inverting circuit schematic is shown in figure 21. figure 21. typical non-inverting configuration input common mode voltage the common mode input range extends to 300mv below ground and to 100mv above v s in single supply operation. exceeding these values does not cause phase reversal; however, if the input voltage exceeds the rails by more than 0. 5v, the input esd devices begin to conduct. the output stay s at the rail during this overdrive condition. if the absolute maximum input v in (700mv beyond either rail) is exceeded, externally limit the input current to 5ma, as shown in figure 22. figure 22. circuit for input current protection power dissipation the maximum internal power dissipation allowed is directly related to the maxi mum junction temperature. if the maximum junction tem perature exceeds 150c, performance degradation occurs. if the maximum junction temperature ex ceeds 150c for an extended time, device failure may occur. overdrive recovery overdrive of an amplifier o ccurs when the output and/or input ranges are exceeded. the recovery time varies based on whether the input or output is overdriven and by how much the range is exceeded. the fan4174 typically recovers in less than 500ns from an overdrive condition. figure 23 shows the fan4174 amplifier in an overdriven condition. figure 23. overdrive recovery driving capacitive loads figure 9 illustrates the response of the fan4174 amplifier family. a small series resistance (r s ) at the output of the amplif ier, illustrated in figure 24, improves stability and settling performance. r s values in figure 9 were chosen to achieve maximum bandwidth with less than 2db of peaking. for maximum flatness, use a larger r s . capacitive loads larger than 500pf require the use of r s . figure 24. typical topology for driving a capacitive load driving a capacitive load in troduces phase-lag into the output signal, which reduces phase margin in the amplifier. the unity gain follo wer is the most sensitive configuration. in a unity gai n follower configuration, the fan4174 amplifier family requires a 300 ?? series resistor to drive a 100pf load.
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 9 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier layout considerations general layout and supply bypassing play major roles in high-frequency performance. fairchild evaluation boards help guide high-frequency layout and aid in device testing and characteri zation. follow the steps below as a basis for high-frequency layout: 1. include 6.8 f and 0.01 f ceramic capacitors. 2. place the 6.8 f capacitor within 0.75 inches of the power pin. 3. place the 0.01 f capacitor within 0.1 inches of the power pin. 4. remove the ground plane under and around the part, especially near the input and output pins, to reduce parasitic capacitance. minimize all trace lengths to reduce series inductances. refer to the evaluation board layouts shown in figures 28-31 for more information. when evaluating only one channel, complete the following on the unused channel: 1. ground the non-inverting input. 2. short the output to the inverting input. evaluation board information the following evaluation boards are available to aid in the testing and layout of this device: evaluation board description products keb002 single channel, dual supply, 5 and 6-lead sot23 fan4174is5x keb010 dual channel, dual supply 8-lead msop fan4274imu8x evaluation board schematics are shown in figure 25 and figure 26; layouts are shown in figures 28-31. figure 25. fan4174 evaluation board schematic (kev002) figure 26. fan4274 evaluation board schematic (keb010)
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 10 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier board layout information figure 27. keb002 (top side) fi gure 28. keb002 (bottom side) figure 29. keb010 (top side) fi gure 30. keb010 (bottom side)
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 11 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier physical dimensions 5 1 4 3 2 land pattern recommendation b a l c 0.10 c 0.20 cab 0.60 ref 0.55 0.35 seating plane 0.25 gage plane 8 0 notes: unless othewise specified a) this package conforms to jedec mo-178, issue b, variation aa, b) all dimensions are in millimeters. 1.45 max 1.30 0.90 0.15 0.05 1.90 0.95 0.50 0.30 3.00 2.60 1.70 1.50 3.00 2.80 symm c 0.95 0.95 2.60 0.70 1.00 see detail a 0.22 0.08 c) ma05brev5 top view (0.30) figure 31. 5-lead sot-23 package package drawings are provided as a servic e to customers considering fairchild co mponents. drawings may change in any manner without notice. please note the revision and/or date on the drawi ng and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online pack aging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ .
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 12 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier physical dimensions figure 32. 8-lead molded small outline package (msop) package drawings are provided as a servic e to customers considering fairchild co mponents. drawings may change in any manner without notice. please note the revision and/or date on the drawi ng and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online pack aging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ .
? 2004 fairchild semiconductor corporation www.fairchildsemi.com fan4174/fan4274 ? rev. 1.0.8 13 fan4174 / fan4274 ? single and dual, ultra- low cost, rail-to-rail i/o, cmos amplifier

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