EL4393C EL4393C Triple 80 MHz Video Amplifier w/Disable Features General Description # 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 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 g 4V up to g 15V. Applications # # # # # # RGB drivers RGB multiplexers RGB gain blocks Video gain blocks Coax cable driver ADC drivers/input multiplexer Being a current-feedback design, the bandwidth stays relatively constant at approximately 80 MHz over the g 1 to g 10 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. Connection Diagram Ordering Information Part No. Temp. Range Package OutlineÝ 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 Internal Power Dissipation Operating Ambient Temperature Range Operating Junction Temperature Storage Temperature Range a 33V a 18V b 18V g 6V 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. Parameter Description Temp Min a 25§ C Typ Max Test Level Units 2 g 15 I mV VOS Input Offset Voltage TCVOS Temperature Coefficient of VOS Full 50 V mV/§ C IB a IIN a Input Bias Current a 25§ C 0.2 5 I mA IBb IINb Input Bias Current a 25§ C 10 65 I mA Full 25 V nA/§ C 58 I dB I mA/V I dB I mA/V TCIB b Temperature Coefficient of IB b CMRR Common-Mode Rejection Ratio (Note 1) a 25§ C b ICMR IINb Input Common-Mode Current (Note 1) a 25§ C PSRR Power Supply Rejection Ratio (Note 2) a 25§ C b IPSR IINb Current Supply Rejection (Note 2) a 25§ C ROL Transimpedance a 25§ C RIN IN a Input Impedance a 25§ C VIN IN a Input Range a 25§ C VO Output Voltage Swing; RL e 1 kX a 25§ C 2 50 3 50 58 2 100 8 5 217 I kX 2 I MX g 13 g 13.5 I V g 12 g 13 I V TD is 3.4in Open Loop DC Electrical Characteristics Supplies at g 15V, Load e 1 KX EL4393C Triple 80 MHz Video Amplifier w/Disable Parameter Description Temp Min Typ 40 70 ISC Short-Circuit Current (Note 3) a 25§ C IO, DIS Output Current when Disabled a 25§ C DIS VIL Disable Voltage for Logic Low a 25§ C DIS VIH Disable Voltage for Logic High a 25§ C DIS IIL Disable Logic Low Input Current a 25§ C 3 DIS IIH Disable Logic High Input Current a 25§ C ICC (en) Positive Supply Current all Channels Enabled a 25§ C ICC (dis) Positive Supply Current all Channels Disabled IEE (en) IEE (dis) 5 Max Test Level Units I mA 150 I mA 0.8 I V 2.2 I V 25 I mA 0 5 I mA 15 20 g 29 I mA a 25§ C 6 11 16 I mA Negative Supply Current all Channels Enabled a 25§ C 13 18 g 28 I mA Negative Supply Current all Channels Disabled a 25§ C 4 9 14 I mA TD is 2.7in Open Loop DC Electrical Characteristics Supplies at g 15V, Load e 1KX Ð Contd. Note 1: VCM e g 10V for VS e g 15V. Note 2: VOS is measured at VS e g 4.5V and VS e g 16V, both supplies are changed simultaneously. Note 3: Only one output short circuited. Pulse test or use heatsink. Closed Loop AC Electrical Characteristics Supplies at g 15V, 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) Description Min Typ Max Test Level Units SR Slew Rate (Note 4) 960 V V/ms SR Slew Rate w/ g 5V Supplies (Note 5) 470 IV V/ms ts Settling Time to 1% 5Vp-p 5V Step (Note 6) 32 V ns BW Bandwidth, b3 dB g 5V Supplies, b 3 dB 80 60 IV IV MHz MHz BW Bandwidth, b0.1 dB g 5V Supplies, b 0.1 dB 16 21 IV IV MHz MHz Peaking b 3 dB BW Tests 0.6 IV dB dG Differential Gain at 3.58 MHz at g 5V Supplies (Note 7) 0.03 0.30 V V % % di Differential Phase at 3.58 MHz at g 5V Supplies (Note 7) 0.088 0.096 V V (§ ) (§ ) Note Note Note Note Note 4: RL e 300X, b5V to a 5V swing, SR measured at 20% to 80%. 5: b2V to a 2V swing, SR measured at 20% to 80%. 6: RL e 300X. 7: DC offset from b0.7V through a 0.7V AC amplitude is 286 mVP-P, equivalent to 40 ire. 8: 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 2.4in Parameter 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 g 15V Gain of 5, 10 vs Various Rf, Rg at g 5V Gain of 5, 10 vs Rf, Rg at g 15V 4393 – 3 4 EL4393C Triple 80 MHz Video Amplifier w/Disable Typical Performance Curves Ð Contd. Disabled Isolation Test at g 5V Disabled Isolation Test at g 15V CinÐvs Peaking Voltage Noise Differential Gain & Phase at 3.58 MHz EL4393 MUX Channel Channel Isolation 4393 – 11 5 EL4393C Triple 80 MHz Video Amplifier w/Disable Typical Performance Curves Ð Contd. Supply Current vs Supply Voltage Maximum Power Dissipation vs Ambient TemperatureÐ 16-Pin PDIP Maximum Power Dissipation vs Ambient TemperatureÐ 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 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 feedbackÐit 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. 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 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. 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. 7 EL4393C Triple 80 MHz Video Amplifier w/Disable 4393 – 2 Typical Application Circuit 8 EL4393C EL4393C Macromodel * 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 5.3in * Revision A, July 1993 * Enhancements include PSRR, CMRR, and Slew Rate Limiting a input * Connections: b Input * l a Vsupply * l l b Vsupply * l l l Putput * l l l l * l l l l l * subckt EL4393/EL 3 2 7 4 6 * * 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 * 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 * TD is 3.6in TAB WIDE Triple 80 MHz Video Amplifier w/Disable 9 EL4393C Triple 80 MHz Video Amplifier w/Disable EL4393C Macromodel Ð Contd. 4393 – 9 4393 – 10 Simplified Schematic of One Channel of EL4393 10 11 BLANK 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. January 1996 Rev B WARNING Ð Life Support Policy 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. 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 Printed in U.S.A.