ELH0101 8508901 peak continuous output current slew rate power ba
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ELH0101 8508901
ELH0101 8508901
peak continuous output current slew rate power bandwidth standby power supplies) input bias current Virtually crossover distortion settling time gain bandwidth MIL-STD-883 devices 100% manufactured
General Description
ELH0101 wideband power operational amplifier featuring inputs internal compensation virtually crossover distortion rapid settling time These features make ELH0101 ideal choice servo amplifiers deflection yoke drivers programmable power supplies disk head positioner amplifiers Elantec facilities comply with MIL-I-45208A other applicable quality specifications Elantec's Military devices 100% fabricated assembled rigidly controlled ultra-clean facilities Milpitas California additional information Elantec's Quality Reliability Assurance policy procedures request brochure QRA-1
Ordering Information
Part Temp Range Package Outline TO-3 TO-3 MDP0003 MDP0003 ELH0101AK 883B ELH0101K 883B
Equivalent Schematic
8508901YX 8508902YX versions this device
Connection Diagram
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View
Note Electrically connected internally connection should made
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Note information contained this data sheet been carefully checked believed accurate date publication however this data sheet cannot ``controlled document'' Current revisions these specifications maintained factory available upon your request recommend checking revision level before finalization your design documentation Patent pending
1985 Elantec
WIDE
December 1994
ELH0101 8508901
Absolute Maximum Ratings
Supply Voltage ELH0101 ELH0101A Power Dissipation Derate linearly zero Power Dissipation Derate linearly zero Differential Input Voltage ELH0101 ELH0101A
Input Voltage Range ELH0101 ELH0101A Peak Output Current pulse) Output Short Circuit Duration (within rated power dissipation Continuous Operating Temperature Range ELH0101 ELH0101A Maximum Junction Temperature Storage Temperature Lead Temperature (Soldering seconds)
Important Note parameters having specifications guaranteed Test Level column indicates specific device testing actually performed during production Quality inspection Elantec performs most electrical tests using modern high-speed automatic test equipment specifically LTX77 Series system Unless otherwise noted tests pulsed tests therefore Test Level Test Procedure 100% production tested sample tested test plan QCX0002 100% production tested sample tested TMAX TMIN test plan QCX0002 sample tested test plan QCX0002 Parameter guaranteed (but tested) Design Characterization Data Parameter typical value information purposes only
Electrical Characteristics (Note
Parameter Description Input Offset Voltage Test Conditions
ELH0101A Test Level Units
ELH0101
TMIN TMAX ELH0101 (Note
DVOS
Change Input Offset Voltage with Dissipated Power Change Input Offset Voltage with Temperature Input Bias Current
DVOS
TMAX ELH0101
ELH0101 8508901
Electrical Characteristics (Note
Parameter Description Input Offset Current Test Conditions
Contd
Test Level Units
ELH0101
ELH0101A
TMAX ELH0101 100X (Note (Note (Note
AVOL
Large Signal Voltage Gain Output Voltage Swing
CMRR PSRR
Common-Mode Rejection Ratio Power Supply Rejection Ratio
VS(b) b15V
Supply Current
Electrical Characteristics
Parameter Description Equivalent Input Noise Voltage Input Capacitance Power Bandwidth Slew Rate Small Signal Rise Fall Time Small Signal Overshoot Test Conditions ELH0101AK
ELH0101 ELH0101A Test Level Units
ELH0101 8508901
Electrical Characteristics
Parameter Description Gain-Bandwidth Product Large Signal Settling Time 01%) Total Harmonic Distortion Test Conditions ELH0101AK ELH0101
Contd
ELH0101A Test Level Units
Note Specification Actual values operating temperature differ from value When supply voltages quiescent operating junction temperature will rise approximately without heatsinking Accordingly change will change significantly during warm-ups Refer temperature power dissipation graphs expected values Note Change offset voltage with dissipated power entirely average device temperature rise differential thermal feedback effects Test performed without heatsink Note light loads output swing limited second stage rather than output stage application section under ``Output swing enhancement'' hints obtain extended operation current sense resistor
ELH0101 8508901
Typical Performance Curves
Power Dissipation Safe Operating Area Quiescent Power Supply Current
Input Bias Current
Input Bias Current After Warm-up
Input Common-Mode Voltage Range
Open-Loop Small Signal Frequency Response
Output Voltage Swing Frequency
Common-Mode Rejection Ratio Frequency
0101
ELH0101 8508901
Typical Performance Curves
Power Supply Rejection Ratio Frequency
Contd
Total Harmonic Distortion Frequency
Settling Time
Total Harmonic Distortion Gain
Equivalent Input Noise Voltage
Output Voltage Swing with Swing Enhancement
Output Voltage Swing Load Resistance
Open-Loop Output Resistance
Open-Loop Output Resistance Frequency
0101
ELH0101 8508901
Typical Performance Curves
Contd
0101
Typical Applications
High Power Voltage Follower High Power Voltage Follower with Swing Enhancement
0101
0101
Restricting Outputs Positive Voltage Only
Generating Split Supply from Single Voltage Supply
0101 0101
ELH0101 8508901
Typical Applications
Contd
Deflection Yoke Driver
Power Source Sink
0101
0101
Servo Amplifier
High Current Source Sink
0101 0101
ELH0101 8508901
Applications Information
Input Voltages
ELH0101 operational amplifier contains JFET input devices which exhibit high reverse breakdown voltages from gate source drain This eliminates need input clamp diodes that high differential input voltages applied without large increase input current However neither input voltage should allowed exceed negative supply resultant high current flow destroy unit Exceeding negative common-mode limit either input will cause reversal phase output force amplifier output corresponding high state Exceeding negative common-mode limit both inputs will force amplifier output high state neither case does latch occur since raising input back within common-mode range again puts input stage thus amplifier normal operating mode Exceeding positive common-mode limit single input will change phase output however both inputs exceed limit output amplifier will forced high state These amplifiers will operate with commonmode input voltage equal positive supply fact common-mode voltage exceed positive supply approximately independent supply voltage over full operating temperature range positive supply therefore used reference input example supply current monitor limiter With ELH0101 there temptation remove bias current compensation resistor normally used non-inverting input summing amplifier Direct connection inputs ground low-impedance voltage source recommended with supply voltages greater than potential problem involves loss supply which cause excessive current second supply Destruction could result current inputs device limited less than there much more than bypass supply Although difficulties largely avoided installing clamp diodes across supply lines every board conservative design would include enough resistance input lead limit current input lead pulled either supply internal currents This precaution means limited ELH0101
Layout Considerations
When working with circuitry capable resolving picoampere level signals leakage currents circuitry external significantly degrade performance High quality insulation must (Kel-F Teflon rate high) Proper cleaning insulating surfaces remove fluxes other residues also required This includes package well sockets printed circuit boards When operating high humidity environments near some form surface coating necessary provide moisture barrier effects board leakage minimized encircling input circuitry with conductive guard ring operated potential close that inputs Electrostatic shielding high impedance circuitry advisable Error voltages also generated external circuitry Thermocouples formed between dissimilar metals cause hundreds microvolts error presence temperature gradients Since ELH0101 deliver large output currents careful attention should paid power supply power supply bypassing load currents Incorrect grounding signal inputs load cause significant errors
ELH0101 8508901
Applications Information
Contd Every attempt should made achieve single point ground system shown figure below
Thermal Resistance
thermal resistance between points conductive system expressed
where subscript order indicates direction heat flow simplified heat transfer circuit cased semiconductor heatsink system shown figure below circuit valid only system thermal equilibrium (constant heat flow) there indeed single specific temperatures temperature distribution junction case heatsink) Nevertheless this reasonable approximation actual performance
0101
Bypass capacitor should used lead lengths bypass capacitors long single point ground system possible keep signal load power supply from intermingling much possible further information proper grounding techniques refer ``Grounding Shielding Techniques Instrumentation'' Morrison ``Noise Reduction Techniques Electronic Systems'' (both published John Wiley Sons) Leads board traces supply pins short circuit current limit pins output must substantial enough handle high currents that ELH0101 capable producing
0101
Short circuit current will limited approximately
Short Circuit Current Limiting
Should current limiting output necessary should shorted should shorted Remember that short circuit current limit dependent upon total resistance seen between supply current limit pins This total resistance includes desired resistor plus leads Board traces solder joints Assuming zero current limit resistor typical temperature coefficient short circuit will approximately
junction-to-case thermal resistance specified data sheet depends upon material size package size thickness quality bond case lead frame case-to-heatsink thermal resistance depends mounting device heatsink upon area quality contact surface Typical TO-3 package using silicone grease heatsink ambient thermal resistance depends quality heatsink ambient conditions
ELH0101 8508901
Application Information
Contd Cooling normally required maintain worst case operating junction temperature device below specified maximum value TJ(MAX) calculated from known operating conditions Rewriting equation find Some inductive loads cause output stage oscillation ceramic capacitor series with resistor from output ground will usually remedy this situation
PDiJA Where VOUT) IOUT Supply Voltage ELH0101 typically
0101
Stability Compensation
with most amplifiers care should taken with lead dress component placement supply decoupling order ensure stability example resistors from output input should placed with body close input minimize ``pickup'' maximize frequency feedback pole minimizing capacitance from input ground feedback pole created when feedback around amplifier resistive parallel resistance capacitance from input device (usually inverting input) ground frequency pole many instances frequency this pole much greater than expected frequency closed loop gain consequently there negligible effect stability margin However feedback pole less than approximately times expected frequency lead capacitor should placed from output input value added capacitor should such that time constant this capacitor resistance parallels greater than equal original feedback pole time constant
Capacitive loads compensated traditional techniques (See ``Operational Amplifiers Theory Practice'' Roberge published Wiley
0101
similar alternative technique used ELH0101
0101
ELH0101 8508901
Output Swing Enhancement
When feedback connected directly output output voltage swing limited driver stage output saturation Output swing increased taking gain output stage shown below High Power Voltage Follower with Swing Enhancement Whenever gain taken output stage either output stage entire must appropriately compensated account additional loop gain
Output Resistance
open-loop output resistance ELH0101 function load current No-load output resistance approximately This decreases under load currents exceeding
Burn-In Circuit
0101
ELH0101 8508901
ELH0101 Macromodel
Connections
input
WIDE
Input
Feedback
Iscb
Output
em0101 subckt buffer Resistors Transistors dclamp dclamp Models model 013eb12 32nS 45pF 60pF 12000 model 013eb12 32nS 45pF 60pF 12000 model dclamp 10eb28 100nS)
ELH0101 8508901
ELH0101 Macromodel
Contd
WIDE
model 10eb15 500mA 3333 20pF 3333 29nS model 3eb15 151V 14fA 500mA 3333 26pF 3333 51nS ends buffer lf156 Subcircuit Input Connections
subckt lf156 Input Stage vcm2 Clamp dcm1 dcm2 vcmc ecmp rcmp dcm3 dcm4 ecmn rcmn 15pF 48mA gosit 4eb4 Intermediate Stage 425eb9 425eb4 100K 30pF
Input
Output
ELH0101 8508901
ELH0101 Macromodel
Contd
Output Stage 1552V rpla rplb 100K 1552V rnla rnlb 100K 52mA dsub Models model 15eb11 beta 2528eb4 model 85eb11 beta 2528eb4 999) model 0eb15) model 0eb16 model 0eb16) model 0eb9) ends lf156 lf156 model courtesy Linear Technology Corp
ELH0101 8508901
ELH0101 8508901
ELH0101 Macromodel
Contd
0101
General Disclaimer
Specifications contained this data sheet effect publication date shown Elantec reserves right make changes circuitry specifications contained herein time without notice Elantec assumes responsibility circuits described herein makes representations that they free from patent infringement
WARNING
Life Support Policy
December 1994
Elantec 1996 Tarob Court Milpitas 95035 Telephone (408) 945-1323 (800) 333-6314 (408) 945-9305 European Office 44-71-482-4596
Elantec products authorized should used within Life Support Systems without specific written consent Elantec Life Support systems equipment intended support sustain life whose failure perform when properly used accordance with instructions provided reasonably expected result significant personal injury death Users contemplating application Elantec products Life Support Systems requested contact Elantec factory headquarters establish suitable terms conditions these applications Elantec warranty limited replacement defective components does cover injury persons property other consequential damages
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