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| EL2130C EL2130C 85 MHz Current Feedback Amplifier Features b 3 dB bandwidth e 85 MHz AV e 1 b 3 dB bandwidth e 75 MHz AV e 2 NTSC PAL dG s 0 03% dP s 01 50 mA output current Drives g2 5V into 100X load Low voltage noise e 4 nV 0Hz Current mode feedback Low cost General Description The EL2130 is a wideband current mode feedback amplifier optimized for gains between b 10 and a 10 while operating on g5V power supplies Built using Elantec's Complementary Bipolar process this device exhibits b 3 dB bandwidths in excess of 85 MHz at unity gain and 75 MHz at a gain of two The EL2130 is capable of output currents in excess of 50 mA giving it the ability to drive either double or single terminated 50X coaxial cables Exhibiting a Differential Gain of 0 03% and a Differential Phase of 0 1 at NTSC and PAL frequencies The EL2130 is an excellent low cost solution to most video applications In addition the EL2130 exhibits very low gain peaking typically below 0 1 dB to frequencies in excess of 40 MHz as well as 50 ns settling time to 0 2% making it an excellent choice for driving flash A D converters The device is available in the plastic 8-lead narrow-body small outline (SO) and the 8-pin mini DIP packages and operates over the temperature range of 0 C to a 75 C Applications Video amplifier Video distribution amplifier Residue amplifiers in ADC Current to voltage converter Coaxial cable driver Ordering Information Part No Temp Range Pkg Outline EL2130CN 0 C to a 75 C EL2130CS 0 C to a 75 C 8-Pin P-DIP MDP0031 8-Lead SO MDP0027 Connection Diagram Mini DIP and SO 2130 - 1 December 1995 Rev C Manufactured under U S Patent No 4 893 091 Note All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication however this data sheet cannot be a ``controlled document'' Current revisions if any to these specifications are maintained at the factory and are available upon your request We recommend checking the revision level before finalization of your design documentation 1990 Elantec Inc EL2130C 85 MHz Current Feedback Amplifier Absolute Maximum Ratings (TA e 25 C) VS VIN DVIN PD IIN Supply Voltage Input Voltage Differential Input Voltage Maximum Power Dissipation Input Current g6V gVS g6V See Curves g10 mA IOP TA TJ TST Output Short Circuit Duration Operating Temperature Range Operating Junction Temperature Storage Temperature s 5 sec 0 C to a 75 C 150 C b 65 C to a 150 C Important Note All parameters having Min Max specifications are guaranteed The Test Level column indicates the specific device testing actually performed during production and Quality inspection Elantec performs most electrical tests using modern high-speed automatic test equipment specifically the LTX77 Series system Unless otherwise noted all tests are pulsed tests therefore TJ e TC e TA Test Level I II III IV V Test Procedure 100% production tested and QA sample tested per QA test plan QCX0002 100% production tested at TA e 25 C and QA sample tested at TA e 25 C TMAX and TMIN per QA test plan QCX0002 QA sample tested per QA test plan QCX0002 Parameter is guaranteed (but not tested) by Design and Characterization Data Parameter is typical value at TA e 25 C for information purposes only Open Loop DC Electrical Characteristics VS e g5V Parameter VOS DVOS DT a IIN b IIN a RIN RL e % unless otherwise specified Typ 20 7 Max 10 15 55 10 15 25 40 50 Test Level I III V I III I III I V I 10 20 I III I 05 10 05 50 80 I III I III Units mV mV mV C mA mA mA mA MX pF dB mA V mA V dB mA V mA V mA V mA V TD is 3 0in Description Input Offset Voltage Offset Voltage Drift a Input Current Condition Temp 25 C TMIN TMAX 25 C TMIN TMAX 25 C TMIN TMAX 25 C 25 C Min a Input Current a Input Resistance a Input Capacitance 10 20 10 CIN CMRR b ICMR Common Mode Rejection Ratio Input Current Common Mode Rejection Power Supply Rejection Ratio a Input Current Power Supply Rejection b Input Current Power Supply Rejection VCM e g2 5V VCM e g2 5V g4 5V s VS s g6V g4 5V s VS s g6V 25 C 25 C TMIN TMIN 25 C 25 C TMIN TMIN 25 C TMIN TMIN 50 60 5 PSRR a IPSR 60 70 01 b IPSR g4 5V s VS s g6V 2 EL2130C 85 MHz Current Feedback Amplifier Open Loop DC Electrical Characteristics VS e g5V RL e % unless otherwise specified Parameter ROL AVOL VO IOUT ROUT IS ISC Description Transimpedance Open Loop DC Voltage Gain Output Voltage Swing Output Current Output Resistance Quiescent Supply Current Short Circuit Current Contd Condition Temp 25 C TMIN TMAX 25 C TMIN TMAX 25 C 25 C 25 C Full 25 C Min 80 70 60 56 3 30 35 50 5 17 85 21 66 Typ 145 Max Test Level I III I III I I V I V Units V mA V mA dB dB V mA X mA mA TD is 1 5in TD is 1 7in VOUT e g2 5V RL e 100X VOUT e g2 5V RL e 100X RL e 100X Closed Loop AC Electrical Characteristics VS e g5V AV e a 2 RF e RG e 820X RL e 100X TA e 25 C Parameter SR tr tf tpd SSBW dG dP GFPL Description Slew Rate (Note 1) Rise Time Fall Time Prop Delay 3 dB Bandwidth NTSC PAL Diff Gain NTSC PAL Diff Phase Gain Flatness f k 40 MHz Condition VO e 5 Vp-p VO e 200 mV VO e 200 mV VO e 200 mV VO e 100 mV Min Typ 625 46 46 40 75 0 03 0 10 0 08 Max Test Level V V V V V V V V Units V ms ns ns ns MHz % deg ( ) dB Note 1 Slew rate is measured with VO e 5Vp-p between b1 25V and a 1 25V and a 1 25V and b1 25V 3 EL2130C 85 MHz Current Feedback Amplifier Typical Performance Curves Normalized Offset Voltage vs Temperature Equivalent Input Noise Common Mode Rejection Ratio vs Frequency Common Mode Rejection Ratio vs Temperature Power Supply Rejection Ratio vs Frequency Power Supply Rejection Ratio vs Temperature b Input Bias Current vs Temperature b Input Bias Current Power Supply Rejection Ratio b Input Bias Current Common Mode Rejection Ratio vs Temperature 2130 - 2 4 EL2130C 85 MHz Current Feedback Amplifier Typical Performance Curves Supply Current vs Temperature Contd a Input Bias Current Power Supply Rejection Ratio vs Temperature a Input Bias Current vs Temperature Transimpedance (ROL) vs Temperature Transimpedance (ROL) vs Frequency Open Loop Gain vs Temperature Frequency Response Output Voltage vs Temperature Short Circuit Current vs Temperature 2130 - 3 5 EL2130C 85 MHz Current Feedback Amplifier Typical Performance Curves Large Signal Response Contd Long-Term Output Settling Error vs Time VS e g5V Large Signal Response 2130 - 4 2130 - 5 AV e a 1 RF e 820X RL e 100X CL e 12 pF AV e a 2 RF e 820X RL e 100X CL e 12 pF 2130 - 6 Small Signal Response Small Signal Response Short Term Output Settling Error vs Time VS e g5V 2130 - 7 2130 - 8 AV e a 1 RF e 820X RL e 100X CL e 12 pF AV e a 2 RF e 820X RL e 100X CL e 12 pF 2130 - 9 6 EL2130C 85 MHz Current Feedback Amplifier Typical Performance Curves Bandwidth and Peaking vs RF for AV e a 1 Contd Bandwidth and Peaking vs RF for AV e a 2 8-Lead Plastic DIP Maximum Power Dissipation vs Ambient Temperature Rise Time and Overshoot vs RF for AV e 1 Rise Time and Overshoot vs RF for AV e 2 8-Lead SO Maximum Power Dissipation vs Ambient Temperature 2130 - 10 Applications Information Power Supply Bypassing The EL2130 will exhibit ringing or oscillation if the power supply leads are not adequately bypassed 0 1 mF ceramic disc capacitors are suggested for both supply pins at a distance no greater than inch from the device Surface mounting chip capacitors are strongly recommended Use of sockets particularly for the SO package should be avoided if possible Sockets add parasitic inductance and capacitance which will result in peaking and overshoot Video Characteristics and Applications Frequency domain testing is performed at Elantec using a computer controlled HP model 8656B Signal Generator and an HP Model 4195A Network Spectrum Analyzer The DUT test board is built using microwave strip line techniques and solid coaxial cables route the stimulus to the DUT socket Signals are routed to and from the DUT test fixture using subminiature coaxial cable Differential Gain and Phase are tested at a noise gain of 2 with 100X load Gain and Phase measurements are made with a DC input reference Lead Dress A ground plane to which decoupling capacitors and gain setting resistors are terminated will eliminate overshoot and ringing However the ground plane should not extend to the vicinity of both the non-inverting and inverting inputs (pins 3 and 2) which would add capacitance to these nodes and lead lengths from these pins should be made as short as possible 7 EL2130C EL2130C 85 MHz Current Feedback Amplifier Applications Information Contd voltage at 0V and compared to those made at Vref equal to 0 7V at frequencies extending to 30 MHz The EL2130 is capable of driving 100X to a minimum of 2 5V peak which means that it can naturally drive double terminated (50X) coaxial cables Capacitive Loads As can be seen from the Bode plot the EL2130 will peak into capacitive loads greater than 20 pf In many applications such as flash A D's capacitive loading is unavoidable In these cases the use of a snubber network consisting of a 100X resistor in series with 47 pF capacitor from the output to ground is recommended Equivalent Circuit AC Test Circuit 2130 - 12 2130 - 11 General Disclaimer Specifications contained in this data sheet are in effect as of the publication date shown Elantec Inc reserves the right to make changes in the circuitry or specifications contained herein at any time without notice Elantec Inc assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement WARNING Life Support Policy December 1995 Rev C Elantec Inc 1996 Tarob Court Milpitas CA 95035 Telephone (408) 945-1323 (800) 333-6314 Fax (408) 945-9305 European Office 44-71-482-4596 8 Elantec Inc products are not authorized for and should not be used within Life Support Systems without the specific written consent of Elantec Inc Life Support systems are equipment intended to support or sustain life and whose failure to perform when properly used in accordance with instructions provided can be reasonably expected to result in significant personal injury or death Users contemplating application of Elantec Inc products in Life Support Systems are requested to contact Elantec Inc factory headquarters to establish suitable terms conditions for these applications Elantec Inc 's warranty is limited to replacement of defective components and does not cover injury to persons or property or other consequential damages Printed in U S A |
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