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| February 2001 KM4270 Product Brief Dual, Low Cost, +2.7V and +5V, Rail-to-Rail I/O Amplifier Preliminary Outperforms the competition in single-supply applications at a SOIC-8 (not actual size) MSOP-8 (not actual size) lower cost! Advertised 5V Specifications G = 1 BW Noise Slew rate Supply current KM4270 4.3 27 9 160 A 5 22 2 850 Competitors B C 5.5 5.6 25 24 6.0 2 750 250 Features at 2.7V I I I I I I I I I 160A supply current per amplifier 4.9MHz bandwidth Output swings to within 20mV of either rail Input voltage range exceeds the rail by >250mV 5.3V/s slew rate 35mA short circuit output current 24nV/Hz input voltage noise Directly replaces MAX4126, OPA2340, LMV822, and TLV2462 in single supply applications Available in SOIC and MSOP package options Available Packages SOIC Out1 1 2 3 4 8 7 + Applications I I I I I I I I I Portable/battery-powered applications PCMCIA, USB Mobile communications, cellular phones, pagers Notebooks and PDA's Sensor Interface A/D buffer Active filters Signal conditioning Portable test instruments General Description The KM4270 is a dual ultra-low cost, low power, voltage feedback amplifier. At 5V, the KM4270 uses only 160A of supply current per amplifier and is designed to operate from a supply range of 2.5V to 5.5V. The input voltage range exceeds the negative and positive rails. The KM4170 (single) and KM4470 (quad) are also available. The KM4270 offers high bipolar performance at a low CMOS price. The KM4270 offers superior dynamic performance with a 4.9MHz small signal bandwidth and 5.3V/s slew rate. The combination of low power, high bandwidth, and rail-to-rail performance make the KM4270 well suited for battery-powered communication/computing systems. (c) 2001 Fairchild Semiconductor Corporation Patents Pending P e r m i l -In1 +In1 -Vs i + a n +Vs Out1 Out2 -In2 +In2 -In1 +In1 -Vs 6 5 y r D 6.4 11 1.6 550 Units MHz nV/Hz V/s A MSOP 8 + 1 2 3 4 +Vs Out2 -In2 +In2 7 + 6 5 Ordering Information Part No. Package KM4270IC8 SOIC-8 KM4270IC8TR3 SOIC-8 KM4270IM8 MSOP-8 KM4270IM8TR3 MSOP-8 Container Rail Reel Rail Reel Pack Qty 95 2500 50 4000 Eval Bd* KEB006 KEB006 KEB010 KEB010 Temperature range for all parts: -40C to +85C. * Evaluation boards are available to aid in the evaluation of these products. See the full data sheet or website for complete information. www.fairchildsemi.com KM4270 Typical Specifications Electrical Characteristics (G = +2, Rf = 5k, RL = 10k to Vs/2, Ta = +25C, unless noted) PARAMETERS Frequency Domain Response2 -3dB bandwidth full power bandwidth gain bandwidth product Time Domain Response rise and fall time overshoot slew rate CONDITIONS TYP Vs = +2.7V Typical Circuit Configuration TYP Vs = +5V UNITS +Vs MHz MHz MHz MHz ns % V/s dBc dBc % nV/Hz nV/Hz dB mV V/C nA pA/C dB dB A M pF V dBc V V V mA mA V G = +1, Vo = 0.02Vpp G = +2, Vo = 0.2Vpp G = +2, Vo = 2Vpp 4.9 3.7 1.4 2.2 163 <1 5.3 -75 -76 0.03 24 32 TBD 0.5 5 90 32 83 90 136 4.3 3.0 2.3 2.0 110 <1 9 -73 -75 0.03 27 28 TBD 1.5 15 90 40 60 80 160 6.8F + Distortion and Noise Response 2nd harmonic distortion1 3rd harmonic distortion1 THD1 input voltage noise input voltage noise crosstalk DC Performance input offset voltage average drift input bias current average drift power supply rejection ratio open loop gain quiescent current per amplifier Pr 1V step 1V step 1V step In + - 0.01F Out Rf KM4270 el DC 1Vpp, 10KHz 1Vpp, 10KHz 1Vpp, 10KHz >10KHz >2KHz 10KHz Rg Input Characteristics input resistance input capacitance input common mode voltage range common mode rejection ratio DC Output Characteristics output voltage swing im 12 12 2 2 -0.25 to 2.95 -0.25 to 5.25 81 85 0.020 to 2.68 0.04 to 4.96 0.05 to 2.63 0.07 to 4.9 0.11 to 2.52 0.14 to 4.67 16 30 35 60 2.5 to 5.5 output current short circuit output current recommended power supply operating range 2) For G = +1, Rf = 0. RL = 10k to Vs/2 RL = 1k to Vs/2 RL= 200 to Vs/2 in Notes: 1) For +5V supply, a 2Vpp condition was used. Absolute Maximum Ratings supply voltage maximum junction temperature storage temperature range lead temperature (10 sec) operating temperature range input voltage range ja for 8 lead SOIC ja for 8 lead MSOP 0 to +6V +175C -65C to +150C +300C -40 to +85C +Vs + 0.5V, -Vs - 0.5V 152C/W 206C/W ar y LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. Lit No. 600312-001 |
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