EL2030C EL2030C 120 MHz Current Feedback Amplifier Features General Description # b 3 dB bandwidth e 120 MHz, AV e 1 # b 3 dB bandwidth e 110 MHz, AV e 2 # 0.01% differential gain and 0.01§ differential phase (NTSC, PAL) # 0.05% differential gain and 0.02§ differential phase (HDTV) # Slew rate 2000 V/ms # 65 mA output current # Drives g 10V into 200X load # Characterized at g 5V and g 15V # Low voltage noise # Current mode feedback # Settling time of 40 ns to 0.25% for a 10V step # Output short circuit protected # Low cost The EL2030 is a very fast, wide bandwidth amplifier optimized for gains between b 10 and a 10. Built using the Elantec monolithic Complementary Bipolar process, this amplifier uses current mode feedback to achieve more bandwidth at a given gain than a conventional voltage feedback operational amplifier. Applications # # # # # # Video gain block Video distribution amplifier HDTV amplifier Residue amplifiers in ADC Current to voltage converter Coax cable driver Due to its wide operating supply range ( g 15V) and extremely high slew rate of 2000 V/ms, the EL2030 drives g 10V into 200X at a frequency of 30 MHz, while achieving 110 MHz of small signal bandwidth at AV e a 2. This bandwidth is still 95 MHz for a gain of a 10. On g 5V supplies the amplifier maintains a 90 MHz bandwidth for AV e a 2. When used as a unity gain buffer, the EL2030 has a 120 MHz bandwidth with the gain precision and low distortion of closed loop buffers. The EL2030 features extremely low differential gain and phase, a low noise topology that reduces noise by a factor of 2 over competing amplifiers, and settling time of 40 ns to 0.25% for a 10V step. The output is short circuit protected. In addition, datasheet limits are guaranteed for g 5V and g 15V supplies. Elantec’s products and facilities comply with applicable quality specifications. See Elantec document, QRA-1: Processing, Monolithic Integrated Circuits. Connection Diagrams Mini DIP SOL Ordering Information Package OutlineÝ EL2030CN Part No. Temp. Range b 40§ C to a 85§ C 8-Pin P-DIP MDP0031 EL2030CM b 40§ C to a 85§ C 20-Lead SOL MDP0027 2030 – 1 Top View Note: Non-designated pins are no connects and are not electrically connected internally. 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. © 1989 Elantec, Inc. December 1995 Rev F 2030 – 3 Top View EL2030C 120 MHz Current Feedback Amplifier Absolute Maximum Ratings (TA e 25§ C) VS VIN DVIN PD IIN IOP TA TJ g 18V or 36V Supply Voltage g 15V or VS Input Voltage g 6V Differential Input Voltage Maximum Power Dissipation See Curves g 10 mA Input Current Peak Output Current Short Circuit Protected Output Short Circuit Duration Continuous (Note 1) TST Operating Temperature Range Operating Junction Temperature Plastic Packages Storage Temperature b 40§ C to a 85§ 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 g 15V, RL e 200X, unless otherwise specified Parameter Description Condition Temp Min Typ Max Test Level Units VOS Input Offset Voltage 25§ C VS e g 15V 10 TMIN, TMAX 25§ C VS e g 5V 5 TMIN, TMAX DVOS/DT Offset Voltage Drift a IIN a Input Current b Input Current 25§ C VS e g 5V, g 15V 5 25§ C VS e g 5V, g 15V a RIN a Input Resistance Full CIN Input Capacitance 25§ C CMRR Common Mode Rejection Ratio (Note 2) PSRR a IPSR VS e g 5V, g 15V Full Input Current Common 25§ C Mode Rejection (Note 2) TMIN, TMAX Power Supply Rejection Ratio (Note 3) Full 25§ C a Input Current Power Supply Rejection (Note 3) b IPSR mV mV 10 I mV 15 III mV V mV/§ C 1.1 50 25§ C Supply Rejection (Note 3) TMIN, TMAX 2 mA III mA I mA III mA 2.0 II MX 1 V pF 60 II dB 10 I mA/V 20 III mA/V II dB 70 0.1 TMIN, TMAX b Input Current Power I 25 40 5 60 15 50 10 TMIN, TMAX b ICMR I III 25 TMIN, TMAX b IIN 20 30 0.5 0.5 II mA/V 1.0 III mA/V 5.0 II mA/V 8.0 III mA/V TD is 3.6in EL2030C EL2030C 120 MHz Current Feedback Amplifier Open Loop DC Electrical Characteristics VS e g 15V, RL e 200X, unless otherwise specified Ð Contd. Parameter Description Condition Temp Min Typ Max Test Level Units ROL Transimpedance (DVOUT/D(bIIN)) VOUT e g 10V VS e g 15V VOUT e g 2.5V VS e g 5V (Note 6) AVOL VO 88 75 25§ C 80 150 II V/mA III V/mA 120 II V/mA 70 III V/mA TMIN, TMAX Open Loop DC Voltage Gain VOUT e g 10V VS e g 15V VOUT e g 2.5V (Note 6) Output Voltage Swing (Note 6) 25§ C TMIN, TMAX Full 60 70 II dB VS e g 5V Full 56 65 II dB V VS e g 15V Full 12 13 II VS e g 5V Full 3 3.5 II V VS e g 15V Full 60 65 II mA Full 30 mA IOUT Output Current (Note 9) 35 II ROUT Output Resistance 25§ C 5 V X IS Quiescent Supply Current Full 15 II mA ISC Short Circuit Current 25§ C 85 V mA VS e g 5V 21 TD is 2.8in EL2030C Closed Loop AC Electrical Characteristics VS e g 15V, AV e a 2, RF e 820X, RG e 820X and RL e 200X Parameter Description Condition Temp Min Typ Max Test Level Units SR Slew Rate (Note 7) FPBW Full Power Bandwidth (Note 4) 1200 2000 IV V/ms 25§ C 19 31.8 IV MHz 25§ C 3 V ns 25§ C 40 V ns tr, tf Rise Time. Fall Time ts Settling Time to 0.25% for 10V step (Note 5) DG Differential Gain (Note 8) 25§ C 0.01 V % p-p Dw Differential Phase (Note 8) 25§ C 0.01 V § p-p eN Input Spot Noise at 1 kHz RG e 101; RF e 909 25§ C 4 V nV/0Hz Note Note Note Note Note Note Note Note Note Vpp e 250 mV 25§ C 1: A heat sink is required to keep the junction temperature below absolute maximum when the output is shorted. 2: VCM e g 10V for VS e g 15V. For VS e g 5V, VCM e g 2.5V. 3: VOS is measured at VS e g 4.5V and at VS e g 18V. Both supplies are changed simultaneously. 4: Full Power Bandwidth is specified based on Slew Rate measurement FPBW e SR/2qVP. 5: Settling Time measurement techniques are shown in: ‘‘Take The Guesswork Out of Settling Time Measurements’’, EDN, September 19, 1985. Available from the factory upon request. 6: RL e 100X. 7: VO e g 10V, tested at VO e g 5. See test circuit. 8: NTSC (3.58 MHz) and PAL (4.43 MHz). 9: For VS e g 15V, VOUT e g 10V. For VS g 5V, VOUT e g 2.5V. 3 TD is 1.9in EL2030C EL2030C 120 MHz Current Feedback Amplifier Typical Performance Curves 2030 – 5 Figure 1. NTSC Video Differential Gain and Phase Test Set-Up Differential Gain and Phase vs Load Resistance, Gain e a 1 Differential Gain and Phase vs Load Capacitance, Gain e a 1 Differential Gain and Phase vs Supply Voltage, Gain e a 1 Differential Gain and Phase vs Load Resistance, Gain e a 2 Differential Gain and Phase vs Load Capacitance, Gain e a 2 Differential Gain and Phase vs Supply Voltage, Gain e a 2 2030 – 6 4 EL2030C 120 MHz Current Feedback Amplifier Typical Performance Curves Ð Contd. 2030 – 7 Figure 2. HDTV and Wideband Video Differential Gain and Phase Test Set-Up Differential Phase Error vs Frequency for Various DC Output Levels Differential Gain Error vs Frequency for Various DC Output Levels Risetime and Overshoot vs RF for AV e a 1 Bandwidth and Peaking vs RF for AV e a 1 g Slew Rate vs Supply Voltage 2030 – 8 5 EL2030C 120 MHz Current Feedback Amplifier Typical Performance Curves Ð Contd. Risetime and Overshoot vs RF for AV e a 2 Bandwidth and Peaking vs RF for AV e a 2 b 3 dB Bandwidth vs Supply Voltage Risetime and Overshoot vs RF for AV e a 10 Bandwidth and Peaking vs RF for AV e a 10 Voltage Gain vs Frequency for AV e a 2, various Capacitive Loads Risetime and Overshoot vs RF for AV e a 2, VS e g 5V Bandwidth and Peaking vs RF for AV e a 2, VS e a 5V Output Settling Error vs Time 2030 – 9 6 EL2030C 120 MHz Current Feedback Amplifier Typical Performance Curves Ð Contd. Output Settling Error vs Time, VS e g 5V Output Swing vs Supply Voltage Current Limit vs Temperature Input Offset Voltage vs Temperature Input Bias Current vs Temperature Transimpedance (ROL) Supply Current vs Supply Voltage Power Supply Rejection vs Frequency Common Mode Rejection vs Frequency 2030 – 10 7 EL2030C 120 MHz Current Feedback Amplifier Typical Performance Curves Ð Contd. Equivalent Input Noise Long-Term Output Settling Error vs Time Long-Term Output Settling Error vs Time, VS e g 5V 20-Lead SOL Maximum Power Dissipation vs Ambient Temperature 8-Lead Plastic DIP Maximum Power Dissipation vs Ambient Temperature 2030 – 11 8 EL2030C 120 MHz Current Feedback Amplifier Typical Performance Curves Ð Contd. Large Signal Response Large Signal Response AV e a 1, RF e 1 kX, RL e 200X, VS e g 15V 2030 – 12 AV e a 2, RF e RG e 820, RL e 200X, VS e g 15V Large Signal Response 2030 – 13 Large Signal Response AV e a 10, RF e 750, RG e 82X, RL e 200X, VS e g 15V AV e a 2, RF e RG e 750X, RL e 200X, VS e g 15V 2030 – 14 Burn-In Circuit 2030 – 15 Test Circuit 2030 – 16 ALL PACKAGES USE THE SAME SCHEMATIC. 2030 – 17 9 EL2030C 120 MHz Current Feedback Amplifier An industry standard way of measuring the distortion of a video component (or system) is to measure the amount of differential gain and phase error it introduces. A 100 mV peak to peak sine wave at 3.58 MHz for NTSC (4.3 MHz for PAL), with 0V DC component serves as the reference. The reference signal is added to a DC offset, shifting the sine wave from 0V to 0.7V which is then applied to the device under test (DUT). The output signal from the DUT is compared to the reference signal. The Differential Gain is a measure of the change in amplitude of the sine wave and is measured in percent. The Differential Phase is a measure of the change in the phase of the sine wave and is measured in degrees. Typically, the maximum positive and negative deviations are summed to give peak differential gain and differential phase errors. The test setup in Figure 1 was used to characterize the EL2030. For higher than NTSC and PAL frequencies, an alternate Differential Gain and Phase measurement can be made using an HP3577A Network Analyser and the setup shown in Figure 2. The frequency response is normalized to gain or phase with 0V DC at the input. From the normalized value a DC offset voltage is introduced and the Differential Gain or Phase is the deviation from the normalized value. Application Information Product Description The EL2030 is a current mode feedback amplifier similar to the industry standard EL2020, but with greatly improved AC characteristics. Most significant among these are the extremely wide bandwidth and very low differential gain and phase. In addition, the EL2030 is fully characterized and tested at g 5V and g 15V supplies. Power Supply Bypassing/Lead Dressing It is important to bypass the power supplies of the EL2030 with 0.1 mF ceramic disc capacitors. Although the lead length is not critical, it should not be more the (/2 inch from the IC pins. Failure to do this will result in oscillation, and possible destruction of the part. Another important detail is the lead length of the inputs. The inputs should be designed with minimum stray capacitance and short lead lengths to avoid ringing and distortion. Latch Mode The EL2030 can be damaged in certain circumstances resulting in catastrophic failure in which destructive supply currents flow in the device. Specifically, an input signal greater than g 5 volts at currents greater than 5 mA is applied to the device when the power supply voltages are zero will result in failure of the device. Video Applications The video signals that must be transmitted for modest distances are usually amplified by a device such as the EL2030 and carried via coax cable. There are at least two ways to drive cables, single terminated and double terminated. In addition, the EL2030 will be destroyed or damaged in the same way for momentary power supply voltage reversals. This could happen, for example, during a power turn on transient, or if the power supply voltages were oscillating and the positive rail were instantaneously negative with respect to the negative rail or vice versa. When driving a cable, it is important to terminate it properly to avoid unwanted signal reflections. Single termination (75X to ground at receive end) may be sufficient for less demanding applications. In general, a double terminated cable (75X in series at drive end and 75X to ground at receive end) is preferred since the impedance match at both ends of the line will absorb signal reflections. However, when double termination is used (a total impedance of 150X), the received signal is reduced by half; therefore, the amplifier is usually set at a gain of 2 or higher to compensate for attenuation. Differential Gain and Differential Phase Composite video signals contain intensity, color, hue, timing and audio information in AM, FM, and Phase Modulation. These video signals pass through many stages during their production, processing, archiving and transmission. It is important that each stage not corrupt these signals to provide a ‘‘high fidelity’’ image to the end viewer. 10 EL2030C 120 MHz Current Feedback Amplifier can be optimized when the supplies are increased to g 15V, especially at 30 MHz HDTV applications. This is primarily due to a reduction in internal parasitic junction capacitance with increased power supply voltage. Video Applications Ð Contd. Video signals are 1V peak-peak in amplitude, from sync tip to peak white. There are 100 IRE (0.714V) of picture (from black to peak white of the transmitted signal) and 40 IRE (0.286V) of sync in a composite video signal (140 IRE e 1V). The following table summarizes the behavior of the EL2030 at g 5V and g 15V for NTSC. In addition, 30 MHz HDTV data is included. Refer to the differential gain and phase typical performance curves for more data. For video applications where a gain of two is used (double termination), the output of the video amplifier will be a maximum of 2V peak-peak. With g 5V power supply, the EL2030 output swing of 3.5V is sufficient to satisfy the video output swing requirements. The EL2030 can drive two double terminated coax cables under these conditions. With g 15V supplies, driving four double terminated cables is feasible. g Vs Rload Av DGain DPhase 15V 15V 5V 15V 15V 5V 15V Although the EL2030’s video characteristics (differential gain and phase) are impressive with g 5V supplies at NTSC and PAL frequencies, it 75X 150X 150X 75X 150X 150X 150X 1 1 1 2 2 2 2 0.02% 0.02% 0.05% 0.02% 0.01% 0.03% 0.05% 0.03§ 0.02§ 0.02§ 0.08§ 0.02§ 0.09§ 0.02§ Comments Single terminated Double terminated Double terminated Single terminated Double terminated Double terminated HDTV, Double terminated Equivalent Circuit 2030 – 18 11 EL2030C TAB WIDE 120 MHz Current Feedback Amplifier EL2030 Macromodel * Revision A. March 1992 * Enhancements include PSRR, CMRR, and Slew Rate Limiting a input * Connections: b input * l a Vsupply * l l b Vsupply * l l l output * l l l l * l l l l l 7 4 6 TD is 6.5in .subckt M2030 3 2 * * Input Stage * e1 10 0 3 0 1.0 vis 10 9 0V h2 9 12 vxx 1.0 r1 2 11 50 l1 11 12 48nH iinp 3 0 5mA iinm 2 0 10mA r12 3 0 2Meg * * 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 l3 30 17 0.5mH c5 17 0 1pF r5 17 0 500 * * Transimpedance Stage * g1 0 18 17 0 1.0 rol 18 0 150K cdp 18 0 2.8pF * * 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 12 EL2030C 120 MHz Current Feedback Amplifier EL2030 Macromodel Ð Contd. TD is 3.1in ios1 7 19 2.5mA ios2 20 4 2.5mA * * Supply Current * ips 7 4 9mA * * Error Terms * ivos 0 23 5mA vxx 23 0 0V e4 24 3 1.0 e5 25 0 7 0 1.0 e6 26 0 4 0 1.0 r9 24 23 3K r10 25 23 1K r11 26 23 1K * * Models * .model qn npn (is e 5eb15 bf e 100 tf e 0.1nS) .model qp pnp (is e 5eb15 bf e 100 tf e 0.1nS) .model dclamp d(is e 1eb30 ibv e 0.266 bv e 3.7 n e 4) .ends 13 EL2030C 120 MHz Current Feedback Amplifier EL2030 Macromodel Ð Contd. 2030 – 19 14 15 BLANK EL2030C EL2030C 120 MHz Current Feedback Amplifier 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. December 1995 Rev F 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 16 Printed in U.S.A.