Am118/218/318 : High-Speed Operational Amplifier Distinctive Characteristics The Am118/218/318 are functionally, electrically, and pin-for-pin equivalent to the National LM118/218/318 100% reliability assurance testing with MIL-STD-883. In| compliance e Electrically tested and optically inspected dice for e Slew rate 70V/us @ Small signal bandwidth 15MHz HY BHcE mahiroeturers e Internal frequency compensation e Available in metal can, hermetic dual-in-line, hermeti e Supply voltage range +5V to +20V flat package or plastic minidip = FUNCTIONAL DESCRIPTION The Am118/218/318 are internally compensated high speed operational amplifiers featuring minimum slew rate of 50V/us, low input bias currents, large input voltage range and excellent performance over a wide range of supply voltages and temperature They have provision for increased speeds when operating in the inverting mode FUNCTIONAL DIAGRAM ve ovo COMPENSATION INVERTING INFUT O OUTPUT NON INVERTING INPUT O O BALANCE COMPENSATION TYPICAL APPLICATIONS Fast Sample and Hold 10pF CONNECTION DIAGRAMS skh AAA Whe OUTPUT anata 3 INPUT: 100 pF 100% 2 INgT4 ll 10pF SAMPLE ORDERING INFORMATION Part Package Temperature Order Number Type Range Number Metal Can OC to #70C LM318H DIP OC to +70C LM318D Am318 Flat Package OC to +70C LM318F * Molded DIP 0C to +70C LM318N Dice 0C to +70C LD318 Metal Can 25C to +85C LM218H Am218 DIP 25C to +85C 1M218D Flat Pak 25C to +85C LM218F Metal Can 55C to +125C LM118H Am118 DIP 55C to +125C = LM118D Flat Package 55C to +125C LM118F Dice -55Cto+125C LD118 Top Views Dual In Line Dual In Line COMP As we 4 we gacance LL]! a{_] come c we 7 13 Ne NVEATING 2 7 COMP A BALANCE (J 2 7720 come c INPUT C] AVERT 8G NPUT CJ nov NAN NVERTING 3 6 4 ouTPUT NOM INVERTING INPUT STB QuTPuT it a a v (ye 90] COMP 8 BALANCE v-C< ot) SOME oe. we (1? af] nc Flat Package acco oc xe COMF A BALANCE (| 2 oC come c AVERT AG NPUT CO 7 NOW NVERTING INPUT C= 7 } owreur vos 6 COMP & BALANCE Metal Can come Notes 1 On Metal Can pin 4 is connected to case 2 On DIP pin G6 is connected to bottom of package 3 On Flat Package pin 5 1s connected to bottom of package 7HfAXIMUM RATINGS Am118/218/318 upply Voltage +20V ternal Power Dissipation (Note 1) 500mWw nfferential Input Voltage (Note 2) +5V yput Voltage (Note 3) +15V Jutput Short-Circurt Duration Indefinite \perating Temperature Range Am118 55C to +125C Am218 25C to +85C Am318 0C to +70C torage Temperature Range , 65C to +150C ead Temperature (Soldering, 60 sec } 300C =LECTRICAL CHARACTERISTICS (T, = 25C unless otherwise specified) (Note 4) . Am118 Parameter Am318 Am218 (see definitions) Conditions Min. Typ. Max. Min. Typ. Max. Units Input Offset Voltage Re < 5k 4 10 2 4 mv ut Offset Current 30 200 50 nA ut Bias Current 150 500 120 250 nA Input Resistance 05 3 10 Mn Supply Current Vg = #20V 5 10 8 mA Large Signal Voltage Gain nS sony OUT 210 25 200 50-200 vimv Lo ako Ay=+1, Ve =+15 (Fig 1) v s Slew Rate Ry = 2k, Cy = 30pF 50 70 50 70 Vius Smal! Signal Bandwidth Vg = 215V 15 15 MHz The Following Specifications Apply Over The Operating Temperature Ranges Input Offset Voltage Rg < 5k 15 6 mv Input Offset Current 300 100 nA Input Bias Current 750 500 nA Vs = 15V, Voytz = 210V Large Signal Voltage Gain Ry > 2k2 20 25 VimvV Input Voltage Range Vg =t15V 4115 #115 Vv Cammon Mode Rejection Ratio Rg <5k2 70 80 dB pply Valtage Rejection Ratio Fig < 5k2 65 70 dB utput Voltage Swing Vg =t15V, Ry = 2k2 +12 +13 412 13 Vv Supply Current Vg = 20V, Ty = 125C 7 mA otes 1 Derate Metal Can package at 6 8 mW/"C for operation at ambient temperatures above 75C, the Dual In Line package at 9 mW /C for operation at ambient temperatures above 95C, and the Flat Package at 5 4 mW/"C for operation at ambient temperatures above 57C 2 The inputs are shunted with diodes for overvoltage protection To limit the current in the protection diodes, resistances of 2 kf? or greater should be inserted in series with the input leads for differential input voltages greater than 5 V For supply voltages less than 15 V, the maximum input voltage ts equal to the supply voltage Unless otherwise specified, these specifications apply for supply voltages from +5 V to 120 V Sw 731Am118/218/318 INPUT CURRENT nA COMMON MODE REJECTION RATIO dB VOLTAGE GAIN 48 UNITY GAIN BANDWIDTH MHz Voltage Gain Ta - 28C Ta=0C Tas 70C Ta= 125C 5 10 18 20 SUPPLY VOLTAGE 2V Common Mode Rejection Rig = 2kft Ta = 25C o 100 Mk 10k =100k = IM 10M FREQUENCY Hz Input Current Am118, Am218 Vgut oN am @ -5-35-15 -5 25 45 65 85 105 125 TEMPERATURE = C Unity Gain Bandwidth 5 55-35-15 5 25 45 65 85 105 125 TEMPERATURE = "CG INPUT CURRENT = nA OUTPUT IMPEDANCE - [2 SUPPLY REJECTION RATIO dB SLEW RATE V/us PERFORMANCE CURVES Input Noise Voltage Power Supply Rejection 109 Ta = 28C = 215V | i 80 7 . 4 ' th =i f + rt 40 = 100k] 4 NEGATIVE SUPPLY q 20 ' = = 100 Ags 1k a Ta = 25C -20 10M w 100 1k 10k 100k FREQUENCY Hz 100 tk 10k | 100k 1M FREQUENCY He Closed Loop Output Impedance Current Limiting Vg = 215V Vg # 15V Ta = 25C 2 Ay = 1000 2 1 vo = 3 - = = Ee > o 10 100 1k 10k 100k 1M 0 5 10 15 20 28 FREQUENCY Hz OUTPUT CURRENT mA Input CurrentAm318 Supply Current 200 150 aes] TASS 100 < 50 i 6 & Ta = 25C c 2, 40 5 Ta= 70C 0 2 0 z \Ta 125C Ww | 10 9 ceieibAnma a a 8 6 oh ae SUPPLY VOLTAGE iv Voltage Follower Ti Slew Rate Inverter Settling Time % 5 Tg = atev at sa = o mn im ~ ro { TAT BC > as i we 80 = an) NEGATIVE Oo > 5 <5 TOP Wg = 215V = RL = kn 5 65 [Cy = 30pF -10 v 60 -15 85-35-15 5 25 45 65 85 105 125 003 ol 03 1 3 TEMPERATURE "C TIME ys 7-32324 Am118/218/318 GAIN + dB OUTPUT SWING Vv OUTPUT SWING-V Open L op Frequency Resp nse o Vs = 15V Ta = 25C i I 8 8 : oa 4 GL 6 8 PHASE ~ DEGREES 180 210 10 100 1k 10% 100k 1M 10M 100M FREQUENCY Hz Large Signal Frequency Response Ta = 25C Vs =t15V 0 O5M IM 2M 5M 10M 20M 50M FREQUENCY Hz Large Signal Frequency Resp nse with Feedforward Ta Vg = *15V o 1M 3M 10M 30M 100M FREQUENCY Hz PERFORMANCE CURVES Closed Loop Frequency Resp nse 60 oo 2 x 40 2 o 20 1 Vg" +15V O} Ta = 25C -20 10 100 ik 10k 100k IM 10M 100M FREQUENCY Hr Voltage Follower Pulse Response > 1 Oo 3 o <= 4 et Q Ta = 25C AL * 2kn Cy = 30pF (Fig 1) -02 0 o4 o8 12 16 TIME ys Inverter Pulse Response without Feedforward 16 W2 > 8 t 2 4 & o Vg =218V Ta 25C a Ay = 2k 3 Cy = 30 pF > -8 2) -020 04 O08 12 16 TIME ps Effect of Capacitive L ading on Closed Lp Frequency Response 8 CL = 100pF 10 -C_, = 30nF oy!= s00F7 3 oo > 1 2 cl. =o -10 X \\ N =20 X -30 1M 10M 100M FREQUENCY Hz Voltage Follower Pulse Response Over Temberature 16 V2 > #8 Ta 125C : 11 2 4 Ta= 55C os a wo a 5 | = 215V o RL = 2kn -B iL *: CL = 30pF -12 (Fig 1) =-02 0 oa o8 12 16 TIME = ps Inverter Pulse Response with Feedforward 16 12 VOLTAGE SWING-V -16 -020 oa o8 12 16 TIME ps The high gain and Jarge bandwidth of the Am118 make it mandatory to observe the following precautions in using the device, as is the case with any high-frequency amplifier. Circuit layout should be arranged to keep afl lead lengths as short as possible and the output separated from the inputs. The values of the feedback and source impedances should be kept small to reduce the effect of stray capacitance at the inputs. The power supplies must be bypassed to ground at the supply leads of the amplifier with low inductance capacitors. Capacitive loading must be kept to minimum, or the amplifier must be isolated as shown in the applications. 7-33Am118/218/318 APPLICATIONS V Itage Follower (Slew Rate Test Circuit) Inverter oe 5knl We AA Ay sen sn INPUT Oj OuTPUT OUTPUT PULSE HEIGHT:# 10v eauts mi sick INPUT O p avetiv al PULSE HEIGHT = 210 a I 200F aT IS MEASURED I PULSE WIDTH = lus RISE TIME S10ns = =i = = = Figure 1 Figure 2 Inverter with Feedforward Compensation for Compensation for Higher Slew Rate Minimum Settling Time BRR ae 10pF jb vu Skil sun ww INPUT O-AAA- O ow 0 OUTPUT Skim INPUT O-A/\Vv4 B O OUTPUT 25k = Figure 4 Isolating Large Capacitive Loads Ra Figure 5 am Figure 6 Over Compensation Figure 7 D/A Converter with Ladder Network D/A Converter with Binary Network Spr 5 ar a T Ag Re pA A A hhe q f Skit 5k kN 1OKE WOK -S 1OKR COuTrUT aon S20 Sie +O ouTPUT 8 8 FROM SWITCHES en T O1br FROM SWITCHES T One ve ~ vt Figure 8 Figure 9Am118/218/318 ADDITIONAL APPLICATIONS High Speed Summing Amplifier with Low Input Bias Currents Rg Ae INPUT OW WAY OO2pF BALANCE OUTPUT Wien Bridge Oscillator Ry 700 Li10V14mA bulb ELDEMA 1869 R1=R9 C,=C2 7 sj 2nR1C1 Figure 10 Figure 11 Metallization and Pad Layout vt OUTPUT Q comp C BALICOMP A MAUS inPUT- J vv INPUT + 64 X 86 Mils FS