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| EL4393C EL4393C Triple 80 MHz Video Amplifier w Disable Features 80 MHz b 3 dB bandwidth for gains of 1 to 10 900 V ms slew rate 10 MHz bandwidth flat to 0 1 dB Excellent differential gain and phase TTL CMOS compatible Available in SOL-16 General Description The EL4393C is three wideband current-feedback amplifiers optimized for video performance Each amplifier can drive a load of 150X at video levels Each amplifier has a disable capability which is controlled by a TTL CMOS compatible logic signal The EL4393C operates on supplies as low as g4V up to g15V Being a current-feedback design the bandwidth stays relatively constant at approximately 80 MHz over the g1 to g10 gain range The EL4393C has been optimized for use with 1300X feedback resistors at a gain of 2 When the outputs are disabled the supply current consumption drops by about 4 mA per channel that is disabled This feature can be used to reduce power dissipation Applications RGB drivers RGB multiplexers RGB gain blocks Video gain blocks Coax cable driver ADC drivers input multiplexer Connection Diagram Ordering Information Part No Temp Range Package Outline EL4393CN b 40 C to a 85 C 16-Lead P-DIP MDP0031 EL4393CM b 40 C to a 85 C 16-Lead SOL MDP0027 4393 - 1 January 1996 Rev B 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 1993 Elantec Inc EL4393C Triple 80 MHz Video Amplifier w Disable Absolute Maximum Ratings (TA e 25 C) Voltage between VS a and VSb Voltage at VS a Voltage at VSb Voltage between VIN a and VINb Current into VIN a or VINb a 33V a 18V b 18V g6V Internal Power Dissipation Operating Ambient Temperature Range Operating Junction Temperature Storage Temperature Range See Curves b 40 C to a 85 C 150 C b 65 C to a 150 C 5 mA 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 Supplies at g15V Parameter VOS TCVOS IB a IBb TCIB b Load e 1 KX Max g15 Description Input Offset Voltage Temperature Coefficient of VOS IIN a Input Bias Current IINb Input Bias Current Temperature Coefficient of IB b Temp a 25 C Min Typ 2 50 02 10 25 Test Level I V Units mV mV C mA mA nA C dB mA V dB mA V kX MX V V TD is 3 4in Full a 25 C a 25 C 5 65 I I V I Full a 25 C CMRR b ICMR Common-Mode Rejection Ratio (Note 1) IINb Input Common-Mode Current (Note 1) Power Supply Rejection Ratio (Note 2) IINb Current Supply Rejection (Note 2) Transimpedance IN a Input Impedance IN a Input Range Output Voltage Swing RL e 1 kX 50 58 3 8 a 25 C I I PSRR b IPSR a 25 C 50 58 2 5 a 25 C a 25 C a 25 C a 25 C a 25 C g13 I I I I I ROL RIN VIN VO 100 217 2 g13 5 g13 g12 2 EL4393C Triple 80 MHz Video Amplifier w Disable Open Loop DC Electrical Characteristics Supplies at g15V Parameter ISC IO DIS DIS VIL DIS VIH DIS IIL DIS IIH ICC (en) ICC (dis) IEE (en) IEE (dis) Description Short-Circuit Current (Note 3) Output Current when Disabled Disable Voltage for Logic Low Disable Voltage for Logic High Disable Logic Low Input Current Disable Logic High Input Current Positive Supply Current all Channels Enabled Positive Supply Current all Channels Disabled Negative Supply Current all Channels Enabled Negative Supply Current all Channels Disabled Temp a 25 C a 25 C a 25 C a 25 C a 25 C a 25 C a 25 C Load e 1KX Max Contd Test Level I Units mA mA V V mA mA mA mA mA mA Min 40 Typ 70 5 150 08 I I I 22 3 0 15 6 13 4 20 11 18 9 25 5 g29 I I I I I I a 25 C 16 a 25 C 14 Note 1 VCM e g10V for VS e g15V Note 2 VOS is measured at VS e g4 5V and VS e g16V both supplies are changed simultaneously Note 3 Only one output short circuited Pulse test or use heatsink Closed Loop AC Electrical Characteristics Supplies at g15V Load e 150X and 15 pF except where noted Rf1 and Rf2 e 1500X AV e 2 TA e 25 C (See note 8 re test fixture) Parameter SR SR ts BW BW Peaking dG di Note Note Note Note Note 4 5 6 7 8 Description Slew Rate (Note 4) Slew Rate w g5V Supplies (Note 5) Settling Time to 1% 5Vp-p 5V Step (Note 6) Bandwidth b3 dB g5V Supplies b 3 dB Bandwidth b0 1 dB g5V Supplies b 0 1 dB b 3 dB BW Tests Min Typ 960 470 32 80 60 16 21 06 0 03 0 30 0 088 0 096 Max Test Level V IV V IV IV IV IV IV V V V V Units V ms V ms ns MHz MHz MHz MHz dB TD is 2 4in % % () () Differential Gain at 3 58 MHz at g5V Supplies (Note 7) Differential Phase at 3 58 MHz at g5V Supplies (Note 7) RL e 300X b5V to a 5V swing SR measured at 20% to 80% b 2V to a 2V swing SR measured at 20% to 80% RL e 300X DC offset from b0 7V through a 0 7V AC amplitude is 286 mVP-P equivalent to 40 ire Test fixture was designed to minimize capacitance at the IN a input A ``good'' fixture should have less than 2 pF of stray capacitance to ground at this very sensitive pin See application notes for further details 3 TD is 2 7in a 25 C g28 EL4393C Triple 80 MHz Video Amplifier w Disable Typical Performance Curves Gain Flatness vs Rf at g 5V Gain Flatness vs Rf at g 15V Phase vs Rf at g 5V Phase vs Rf at g15V Gain of 5 10 vs Various Rf Rg at g5V Gain of 5 10 vs Rf Rg at g 15V 4393 - 3 4 EL4393C Triple 80 MHz Video Amplifier w Disable Typical Performance Curves Disabled Isolation Test at g5V Contd Disabled Isolation Test at g 15V Cin vs Peaking Voltage Noise Differential Gain at 3 58 MHz Phase EL4393 MUX Channel Channel Isolation 4393 - 11 5 EL4393C Triple 80 MHz Video Amplifier w Disable Typical Performance Curves Supply Current vs Supply Voltage Contd Maximum Power Dissipation vs Ambient Temperature 16-Pin PDIP Maximum Power Dissipation vs Ambient Temperature 16-Pin SOL 4393 - 4 Small Signal Pulse Response Large Signal Pulse Response 4393 - 5 4393 - 6 Enable Disable with a VE Voltage Output Enable Disable with b VE Voltage Output 4393 - 7 4393 - 8 6 EL4393C Triple 80 MHz Video Amplifier w Disable Typical Application for EL4393 and General Rules for PCB Layout The figure shows two EL4393's configured as a 2 1 RGB multiplexer and cable driver driving 75X back terminated cables Each channel of the EL4393 is configured to give a gain of two to make up for the losses of the back terminating resistor In this example the Disable pins of each RGB section are driven by a complementary TTL ``select'' signal Larger multiplexers can be assembled with a 1-of-n TTL decoder selecting each RGB triplet The circuit gives channel isolations of typically better than b 50 dB at 10 MHz and with a 20 dB decade slope extending down to better than b 90 dB at frequencies below 100 kHz The schematic does not show things like power supply decoupling or pcb layout grounding and signal returns but these will all affect the overall performance of the circuit and care should be taken with these aspects It is recommended that the VCC and VEE pins each be decoupled by a 0 1 mF NPO or X7R dielectric ceramic capacitors to ground within 0 1 inch of the part and in parallel with the 0 1 mF A 47 mF tantalum capacitor also to ground The 47 mF capacitors should be within 0 25 inch of their power pins The ground plane should be underneath the package but cut away from the In b inputs Care should be taken with the center channel feedback it must be kept away from any of the in a or in b pins if it has to go under the package Route the G-out line between the pin 3 ground and the pin 4 In b if going under the package is essential Otherwise loop the Gout trace around all the other circuitry to its Rf resistor The Rf and if used Rg resistors should be on the input side of the package to minimize trace length on the In b pins The digital input disables are on the output side of the package so that a good ground plane down the center of the board underneath the package will isolate any fast edges from the sensitive inputs 7 EL4393C Triple 80 MHz Video Amplifier w Disable 4393 - 2 Typical Application Circuit 8 EL4393C Triple 80 MHz Video Amplifier w Disable EL4393C Macromodel Revision A July 1993 Enhancements include PSRR CMRR and Slew Rate Limiting a input Connections b Input l a Vsupply l l Output Stage q1 4 18 19 qp q2 7 18 20 qn q3 7 19 21 qn q4 4 20 22 qp r7 21 6 4 r8 22 6 4 ios1 7 19 2 5 mA ios2 20 4 2 5 mA Error Terms ivos 0 23 2 mA vxx 23 0 0V e4 24 0 3 0 1 0 e5 25 0 7 0 1 0 e6 26 0 4 0 1 0 r9 24 23 1K r10 25 23 1K r11 26 33 1K Models model qn npn (is e 5eb15 bf e 100 tf e 0 2nS) model qp pnp (is e 5eb15 bf e 100 tf e 0 2nS) model dclamp d (is e 1eb30 ibv e 0 266 bv e 1 5 n e 4) ends TD is 3 6in TD is 5 3in 9 h1 13 0 vis 600 r2 13 14 1K d1 14 0 dclamp d2 0 14 dclamp High Frequency Pole e2 30 0 14 0 0 00166666666 l5 30 17 1 2 mH c5 17 0 1 pF r5 17 0 500 Transimpedance Stage g1 0 18 17 0 1 0 rol 18 0 250k cdp 18 0 2 2 pF TAB WIDE l l l subckt EL4393 EL Input Stage e1 10 0 3 0 1 0 vis 10 9 0V h2 9 12 vxx 1 0 r1 2 11 50 l 1 11 12 29 nH iinp 3 0 0 2 mA iinm 2 0 10 mA Slew Rate Limiting 3 l l l 2 l l l 7 b Vsupply l l 4 Putput l 6 EL4393C Triple 80 MHz Video Amplifier w Disable EL4393C Macromodel Contd 4393 - 9 4393 - 10 Simplified Schematic of One Channel of EL4393 10 BLANK 11 EL4393C EL4393C Triple 80 MHz Video Amplifier w Disable 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 January 1996 Rev B 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 12 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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