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| www.fairchildsemi.com KM4170, KM4270, KM4470 Low Cost, +2.7V & +5V, Rail-to-Rail I/O Amplifiers Features at 2.7V * * * * * * * * 136A 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 16mA output current 21nV/Hz input voltage noise KM4170: directly replaces OPA340, OPA343, and TLV2461 in single supply applications and available in SC70-5 and SOT23-5 package options * KM4270: directly replaces MAX4126, OPA2340, LMV822 and TLV2462 in single supply applications and available in SOIC-8 and MSOP-8 package options * KM4470: directly replaces MAX4129, OPA4340, LMV824 and TLV2464 in single supply applications and available in TSSOP-14 package option Description The KM4170 (single), KM4270 (dual), and KM4470 (quad) are ultra-low cost, low power, voltage feedback amplifiers. At 5V, the KM4X70 family uses only 160A of supply current per amplifier and are designed to operate from a supply range of 2.5V to 5.5V (1.25 to 2.75). The input voltage range exceeds the negative and positive rails. The KM4X70 family of amplifiers offer high bipolar performance at a low CMOS prices. They offer superior dynamic performance with 4.9MHz small signal bandwidths and 5.3V/s slew rates. The combination of low power, high bandwidth, and rail-to-rail performance make the KM4X70 amplifiers well suited for battery-powered communication/ computing systems. Large Signal Frequency Response Vs = 5V Applications * * * * * * * * * 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 Output Voltage (0.27V/div) Magnitude (1dB/div) Vo = 1Vpp Vo = 4Vpp Vo = 2Vpp 0.01 0.1 1 10 Frequency (MHz) Output Swing vs. Load 1.35 RL = 10k RL = 1k 0 RL = 75 RL = 100 RL = 200 RL = 75/100 -1.35 -2.0 0 2.0 Input Voltage (0.4V/div) REV. 5 December 2002 DATA SHEET KM4170, KM4270, KM4470 KM4170 SOT23-5 SC70-5 Out -Vs +In 1 2 + 5 +Vs Out -Vs 1 2 + 5 +Vs - - 3 4 -In +In 3 4 -In KM4270 SOIC MSOP Out1 -In1 +In1 -Vs 1 2 3 4 + 8 7 + +Vs Out2 -In2 +In2 Out1 -In1 +In1 -Vs 1 2 3 4 + 8 7 + +Vs Out2 -In2 +In2 6 5 6 5 KM4470 TSSOP Out1 -In1 +In1 +Vs +In2 -In2 1 2 3 4 5 6 14 13 12 11 10 9 2 REV. 5 December 2002 KM4170, KM4270, KM4470 DATA SHEET Absolute Maximum Ratings Parameter Supply Voltages Maximum Junction Temperature Storage Temperature Range Lead Temperature, 10 seconds Operating Temperature Range, recommended Input Voltage Range Iout Continuous Min. 0 - -65 - -40 -Vs -0.5 -30 Max. +6 +175 +150 +260 +85 +Vs +0.5 +30 Unit V C C C C V mA Electrical Specifications (Vs = +2.7V, G = 2, RL = 10k to Vs/2, Rf = 5k; unless otherwise noted) Parameter AC Performance -3dB Bandwidth1 Full Power Bandwidth Gain Bandwidth Product Rise and Fall Time Overshoot Slew Rate 2nd Harmonic Distortion 3rd Harmonic Distortion THD Input Voltage Noise DC Performance Input Offset Voltage2 Average Drift Input Bias Current2 Average Drift Power Supply Rejection Ratio2 Open Loop Gain Quiescent Current Per Channel2 Input Characteristics Input Resistance Input Capacitance Input Common Mode Voltage Range Common Mode Rejection Ratio2 Output Characteristics Output Voltage Swing2 Conditions G = +1, Vo = 0.02Vpp G = +2, Vo = 0.2Vpp G = +2, Vo = 2Vpp 1V step 1V step 1V step 1Vpp, 10kHz 1Vpp, 10kHz 1Vpp, 10kHz >10kHz -6 Min. Typ. 4.9 3.7 1.4 2.2 163 <1 5.3 -72 -72 0.03 21 0.5 5 90 32 83 90 136 12 2 -0.25 to 2.95 81 +6 420 Max. Unit MHz MHz MHz MHz ns % V/s dBc dBc % nV/Hz mV V/C nA pA/C dB dB A M pF V dB V V V mA V DC RL = 10k 55 190 DC, Vcm = 0V to Vs RL = 10k to Vs/2 RL = 1k to Vs/2 RL = 200 to Vs/2 55 Output Current Power Supply Operating Range 0.06 to 2.64 0.02 to 2.68 0.05 to 2.63 0.11 to 2.52 16 2.5 2.7 5.5 Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters. Notes: 1. For G = +1, Rf = 0. 2. For RL = 10k, KM4170, KM4270, and KM4470 are 100% tested at 25C. REV. 5 December 2002 3 DATA SHEET KM4170, KM4270, KM4470 Electrical Specifications (Vs = +5V, G = 2, RL = 10k to Vs/2, Rf = 5k; unless otherwise noted) Parameter AC Performance -3dB Bandwidth1 Full Power Bandwidth Gain Bandwidth Product Rise and Fall Time Overshoot Slew Rate 2nd Harmonic Distortion 3rd Harmonic Distortion THD Input Voltage Noise DC Performance Input Offset Voltage2 Average Drift Input Bias Current2 Average Drift Power Supply Rejection Ratio2 Open Loop Gain Quiescent Current Per Channel2 Input Characteristics Input Resistance Input Capacitance Input Common Mode Voltage Range Common Mode Rejection Ratio2 Output Characteristics Output Voltage Swing2 Conditions G = +1, Vo = 0.02Vpp G = +2, Vo = 0.2Vpp G = +2, Vo = 2Vpp 1V step 1V step 1V step 1Vpp, 10kHz 1Vpp, 10kHz 1Vpp, 10kHz >10kHz -8 Min. Typ. 4.3 3.0 2.3 2.0 110 <1 9 -73 -75 0.03 22 1.5 15 90 40 60 80 160 12 2 -0.25 to 5.25 85 +8 450 Max. Unit MHz MHz MHz MHz ns % V/s dBc dBc % nV/Hz mV V/C nA pA/C dB dB A M pF V dB V V V mA V DC RL = 10k 40 235 DC, Vcm = 0V to Vs RL = 10k to Vs/2 RL = 1k to Vs/2 RL = 200 to Vs/2 58 Output Current Power Supply Operating Range 0.08 to 4.92 0.04 to 4.96 0.07 to 4.9 0.14 to 4.67 30 2.5 2.7 5.5 Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters. Notes: 1. For G = +1, Rf = 0. 2. For RL = 10k, KM4170 is 100% tested at 25C. Package Thermal Resistance Package 5 lead SOT23 5 lead SC70 8 lead SOIC 8 lead MSOP 14 lead TSSOP JA 256C/W 331.4C/W 152C/W 206C/W 100C/W 4 REV. 5 December 2002 KM4170, KM4270, KM4470 DATA SHEET Typical Operating Characteristics (Vs = +2.7V, G = 2, RL = 10k to Vs/2, Rf = 5k; unless otherwise noted) Non-Inverting Freq. Response Vs = +5V Normalized Magnitude (1dB/div) Vo = 0.2Vpp G=2 Rf = 5k G=1 Rf = 0 Inverting Frequency Response Vs = +5V Normalized Magnitude (1dB/div) Vo = 0.2Vpp G = -2 Rf = 5k G = -1 Rf = 5k G = 10 Rf = 5k G=5 Rf = 5k G = -10 Rf = 5k G = -5 Rf = 5k 0.01 0.1 1 10 0.01 0.1 1 10 Frequency (MHz) Non-Inverting Frequency Response Normalized Magnitude (1dB/div) Vo = 0.2Vpp G=2 Rf = 5k Frequency (MHz) Inverting Frequency Response Normalized Magnitude (1dB/div) Rf = 5k G = -2 G = -1 G=1 Rf = 0 G = 10 Rf = 5k G=5 Rf = 5k G = -10 G = -5 0.01 0.1 1 10 0.01 0.1 1 10 Frequency (MHz) Frequency Response vs. CL Vo = 0.05V CL = 100pF Rs = 100 CL = 50pF Rs = 0 Frequency (MHz) Frequency Response vs. RL Magnitude (1dB/div) Magnitude (1dB/div) RL = 1k RL = 10k CL = 20pF Rs = 0 CL = 10pF Rs = 0 + 5k 5k Rs CL RL RL = 200 RL = 50 0.01 0.1 1 10 0.01 0.1 1 10 Frequency (MHz) Large Signal Frequency Response 140 Vs = 5V Frequency (MHz) Open Loop Gain & Phase vs. Frequency 120 |Gain| RL = 10k |Gain| No load Vs = 5V Open Loop Phase (deg) Open Loop Gain (dB) Magnitude (1dB/div) Vo = 1Vpp 100 80 60 40 20 0 -20 100 Phase RL = 10k Phase No load 0 -45 -90 -135 -180 101 102 103 104 105 106 107 108 Vo = 4Vpp Vo = 2Vpp 0.01 0.1 1 10 Frequency (MHz) Frequency (Hz) REV. 5 December 2002 5 DATA SHEET KM4170, KM4270, KM4470 Typical Operating Characteristics (Vs = +2.7V, G = 2, RL = 10k to Vs/2, Rf = 5k; unless otherwise noted) 2nd & 3rd Harmonic Distortion -20 Vo = 1Vpp 2nd Harmonic Distortion vs. Vo -20 -30 -30 Distortion (dBc) -50 -60 -70 -80 -90 0 20 40 60 2nd RL = 10k 3rd RL = 10k Distortion (dB) -40 2nd RL = 200 3rd RL = 1k 3rd RL = 200 -40 -50 50kHz -60 50kHz 100kHz -70 -80 -90 10kHz, 20kHz 10kHz 2nd RL = 1k 80 100 0.5 1 1.5 2 2.5 Frequency (kHz) 3rd Harmonic Distortion vs. Vo -20 -30 50kHz Output Amplitude (Vpp) CMRR 0 -10 -20 Distortion (dB) -40 -50 -60 -70 10kHz CMRR (dB) 1 -30 -40 -50 -60 -70 -80 -90 100kHz 20kHz -80 -90 0.5 1.5 2 2.5 10 100 1000 10000 100000 Output Amplitude (Vpp) PSRR 0 -10 -20 1.35 Frequency (Hz) Output Swing vs. Load RL = 10k Output Voltage (0.27V/div) RL = 1k PSRR (dB) -30 -40 -50 -60 -70 -80 -90 10 100 1000 10000 100000 0 RL = 75 RL = 100 RL = 200 RL = 75/100 -1.35 -2.0 0 2.0 Frequency (Hz) Pulse Resp. vs. Common Mode Voltage 55 Input Voltage (0.4V/div) Input Voltage Noise 50 Output Voltage (0.5V/div) 1.2V offset 0.6V offset No offset -0.6V offset -1.2V offset 45 40 35 30 25 20 15 10 5 0 Time (1s/div) nV/Hz 0.1k 1k 10k 100k 1M Frequency (Hz) 6 REV. 5 December 2002 KM4170, KM4270, KM4470 DATA SHEET Application Information General Description The KM4X70 family of amplifiers are single supply, general purpose, voltage-feedback amplifiers. They are fabricated on a complementary bipolar process, feature a rail-to-rail input and output, and are unity gain stable. The typical non-inverting circuit schematic is shown in Figure 1. Overdrive Recovery Overdrive of an amplifier occurs 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 ranges are exceeded. The KM4X70 will typically recover in less than 50ns from an overdrive condition. Figure 3 shows the KM4X70 amplifier family in an overdriven condition. G=5 +Vs 6.8F + Input Voltage (0.5V/div) Output Input R11 In R12 R2 + Rg 0.01F Out Rout Rf KM4100 Time (10s/div) Figure 3: Overdrive Recovery Driving Capacitive Loads Figure 1: Typical Non-inverting Configuration The Frequency Response vs. CL plot, illustrates the response of the KM4X70 amplifier family. A small series resistance (Rs) at the output of the amplifier, illustrated in Figure 4, will improve stability and settling performance. Rs values in the Frequency Response vs. CL plot were chosen to achieve maximum bandwidth with less than 2dB of peaking. For maximum flatness, use a larger Rs. Capacitive loads larger than 50pF require the use of Rs. Input Common Mode Voltage The common mode input range extends to 250mV below ground and to 250mV above Vs, in single supply operation. Exceeding these values will not cause phase reversal. However, if the input voltage exceeds the rails by more than 0.5V, the input ESD devices will begin to conduct. The output will stay at the rail during this overdrive condition. If the absolute maximum input voltage (700mV beyond either rail) is exceeded, externally limit the input current to 5mA as shown in Figure 2. + Rf Rg Rs CL RL Vin 10k Vo + Figure 4: Typical Topology for driving a capacitive load Driving a capacitive load introduces phase-lag into the output signal, which reduces phase margin in the amplifier. The unity gain follower is the most sensitive configuration. In a unity gain follower configuration, the KM4X70 amplifier family requires a 510 series resistor to drive a 100pF load. Figure 2: Circuit for Input Current Protection Power Dissipation The maximum internal power dissipation allowed is directly related to the maximum junction temperature. If the maximum junction temperature exceeds 150C, some performance degradation will occur. If the maximum junction temperature exceeds 175C for an extended time, device failure may occur. REV. 5 December 2002 7 DATA SHEET KM4170, KM4270, KM4470 Layout Considerations General layout and supply bypassing play major roles in high frequency performance. Fairchild has evaluation boards to use as a guide for high frequency layout and as aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: * Include 6.8F and 0.01F ceramic capacitors * Place the 6.8F capacitor within 0.75 inches of the power pin * Place the 0.01F capacitor within 0.1 inches of the power pin * 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 Figure 6 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 Figure 5a: KM4170 Evaluation Board Schematic Evaluation Board Information The following evaluation boards are available to aid in the testing and layout of this device: Eval Bd KEB002 KEB011 KEB006 KEB010 KEB012 Description Single Channel, Dual Supply, 5 and 6 lead SOT23 Single Channel, Dual Supply, 5 and 6 lead SC70 Dual Channel, Dual Supply, 8 lead SOIC Dual Channel, Dual Supply, 8 lead MSOP Quad Channel, Dual Supply, 14 lead TSSOP Products KM4170IT5 KM4170IS5 KM4270IC8 KM4270IM8 KM4470IP14 Evaluation board schematics are shown in Figures 5a, 5b, 5c and layouts are shown in Figure 6a through Figure 6l. Figure 5b: KM4270 Evaluation Board Schematic 8 REV. 5 December 2002 KM4170, KM4270, KM4470 DATA SHEET Figure 5c: KM4470 Evaluation Board Schematic REV. 5 December 2002 9 DATA SHEET KM4170, KM4270, KM4470 KM4170 Evaluation Board Layout Figure 6a: KEB002 (top side) Figure 6b: KEB002 (bottom side) Figure 6c: KEB011 (top side) Figure 6d: KEB011 (bottom side) 10 REV. 5 December 2002 KM4170, KM4270, KM4470 DATA SHEET KM4270 Evaluation Board Layout Figure 6e: KEB006 (top side) Figure 6f: KEB006 (bottom side) Figure 6g: KEB010 (top side) Figure 6h: KEB010 (bottom side) REV. 5 December 2002 11 DATA SHEET KM4170, KM4270, KM4470 KM4470 Evaluation Board Layout Figure 6i: KEB012 (top side) Figure 6j: KEB012 (bottom side) Figure 6k: KEB012 (layer1 mask) Figure 6l: KEB012 (layer2 mask) 12 REV. 5 December 2002 KM4170, KM4270, KM4470 DATA SHEET KM4170 Package Dimensions b C L e SOT23-5 DATUM 'A' 2 C L E C L E1 e1 D C L C SYMBOL A A1 A2 b C D E E1 L e e1 MIN 0.90 0.00 0.90 0.25 0.09 2.80 2.60 1.50 0.35 MAX 1.45 0.15 1.30 0.50 0.20 3.10 3.00 1.75 0.55 0.95 ref 1.90 ref 0 10 NOTE: 1. All dimensions are in millimeters. 2 Foot length measured reference to flat foot surface parallel to DATUM 'A' and lead surface. 3. Package outline exclusive of mold flash & metal burr. 4. Package outline inclusive of solder plating. 5. Comply to EIAJ SC74A. 6. Package ST 0003 REV A supercedes SOT-D-2005 REV C. A A2 A1 b C L e SC70 L C L HE C L E Q1 SYMBOL e D b E HE Q1 A2 A1 A c L MIN MAX 0.65 BSC 1.80 2.20 0.15 0.30 1.15 1.35 1.80 2.40 0.10 0.40 0.80 1.00 0.00 0.10 0.80 1.10 0.10 0.18 1.10 0.30 D C L C NOTE: 1. 2. 3. 4. All dimensions are in millimeters. Dimensions are inclusive of plating. Dimensions are exclusive of mold flashing and metal burr. All speccifications comply to EIAJ SC70. A A2 A1 REV. 5 December 2002 13 DATA SHEET KM4170, KM4270, KM4470 KM4270 Package Dimensions SOIC-8 SOIC e D ZD C L 7 C L E H SYMBOL A1 B C D E e H h L A ZD A2 L Pin No. 1 B DETAIL-A MIN MAX 0.10 0.25 0.36 0.46 0.19 0.25 4.80 4.98 3.81 3.99 1.27 BSC 5.80 6.20 0.25 0.50 0.41 1.27 1.52 1.72 8 0 0.53 ref 1.37 1.57 h x 45 NOTE: DETAIL-A 1. All dimensions are in millimeters. 2. Lead coplanarity should be 0 to 0.10mm (.004") max. 3. Package surface finishing: (2.1) Top: matte (charmilles #18~30). (2.2) All sides: matte (charmilles #18~30). (2.3) Bottom: smooth or matte (charmilles #18~30). 4. All dimensions excluding mold flashes and end flash from the package body shall not exceed o.152mm (.006) per side(d). A A1 A2 C MSOP e S 02 MSOP-8 t1 R1 SYMBOL MIN A 1.10 A1 0.10 A2 0.86 D 3.00 D2 2.95 E 4.90 E1 3.00 E2 2.95 E3 0.51 E4 0.51 R 0.15 R1 0.15 t1 0.31 t2 0.41 b 0.33 b1 0.30 c 0.18 c1 0.15 01 3.0 02 12.0 03 12.0 L 0.55 L1 0.95 BSC aaa 0.10 bbb 0.08 ccc 0.25 e 0.65 BSC S 0.525 BSC MAX - 0.05 0.08 0.10 0.10 0.15 0.10 0.10 0.13 0.13 +0.15/-0.06 +0.15/-0.06 0.08 0.08 +0.07/-0.08 0.05 0.05 +0.03/-0.02 3.0 3.0 3.0 0.15 - - - - - - E/2 2X -H- t2 R Gauge Plane E1 3 7 0.25mm -B- 2 03 b L1 c1 b1 Section A - A 5 L 01 E3 E4 1 2 2 4 6 ccc A B C c D2 A2 -C- Detail A Scale 40:1 Detail A E2 A b aaa A bbb M A B C -A- A A E1 E A1 D 3 4 NOTE: 1 All dimensions are in millimeters (angle in degrees), unless otherwise specified. 2 3 4 5 6 7 Datums - B - and - C - to be determined at datum plane - H - . Dimensions "D" and "E1" are to be determined at datum - H - . Dimensions "D2" and "E2" are for top package and dimensions "D" and "E1" are for bottom package. Cross sections A - A to be determined at 0.13 to 0.25mm from the leadtip. Dimension "D" and "D2" does not include mold flash, protrusion or gate burrs. Dimension "E1" and "E2" does not include interlead flash or protrusion. 14 REV. 5 December 2002 KM4170, KM4270, KM4470 DATA SHEET KM4470 Package Dimensions TSSOP 2X E/2 1.0 DIA 1.0 b1 ddd C B A 2X N/2 TIPS 123 6 6 N 5 e -B- 7 (b) 8 TSSOP-14 c1 SYMBOL A A1 A2 L R R1 b b1 c c1 01 L1 aaa bbb ccc ddd e 02 03 D E1 E e N MIN - 0.05 0.85 0.50 0.09 0.09 0.19 0.19 0.09 0.09 0 NOM - - 0.90 0.60 - - - 0.22 - - - 1.0 REF 0.10 0.10 0.05 0.20 0.65 BSC 12 REF 12 REF 5.00 4.40 6.4 BSC 0.65 BSC 14 MAX 1.10 0.15 0.95 0.75 - - 0.30 0.25 0.20 0.16 8 E1 E c 1.0 e /2 9 SECTION AA ccc 7 -A- D8 3 A2 A aaa C -C- b NX bbb M C B A A1 (02) (0.20) R1 -H- R GAGE PLANE 10 4.90 4.30 5.10 4.50 A A 0.25 (03) L (L1) 01 NOTES: 1 All dimensions are in millimeters (angle in degrees). 2 3 4 5 Dimensioning and tolerancing per ASME Y14.5-1994. Dimensions "D" does not include mold flash, protusions or gate burrs. Mold flash protusions or gate burrs shall not exceed 0.15 per side . Dimension "E1" does not include interlead flash or protusion. Interlead flash or protusion shall not exceed 0.25 per side. Dimension "b" does not include dambar protusion. Allowable dambar protusion shall be 0.08mm total in excess of the "b" dimension at maximum material condition. Dambar connot be located on the lower radius of the foot. Minimum space between protusion and adjacent lead is 0.07mm for 0.5mm pitch packages. Terminal numbers are shown for reference only. Datums - A - and - B - to be determined at datum plane - H - . Dimensions "D" and "E1" to be determined at datum plane - H - . This dimensions applies only to variations with an even number of leads per side. For variation with an odd number of leads per side, the "center" lead must be coincident with the package centerline, Datum A. Cross sections A - A to be determined at 0.10 to 0.25mm from the leadtip. 6 7 8 9 10 REV. 5 December 2002 15 DATA SHEET KM4170, KM4270, KM4470 Ordering Information Model KM4170 KM4170 KM4270 KM4270 KM4470 Part Number KM4170IT5TR3 KM4170IS5TR3 KM4270IC8TR3 KM4270IM8TR3 Package SOT23-5 SC70-5 SOIC-8 MSOP-8 Container Reel Reel Reel Reel Reel Pack Qty 3000 3000 2500 3000 2500 KM4470IP14TR3 TSSOP-14 Temperature range for all parts: -40C to +85C. DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICES TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. 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. www.fairchildsemi.com (c) 2001 Fairchild Semiconductor Corporation |
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