® EL2130 CT ENT ODU E PR PLACEM r at T E L E te OBSO NDED R port Cen /tsc E p m M u o c S M . l l ECO echnica .intersi R O N Data r TSheet December 1995, Rev. C www ct ou L or conta -INTERSI 1-888 FN7047 85MHz Current Feedback Amplifier Features The EL2130 is a wideband current mode feedback amplifier optimized for gains between -10 and +10 while operating on ±5V power supplies. Built using Elantec's Complementary Bipolar process, this device exhibits -3dB bandwidths in excess of 85MHz at unity gain and 75MHz at a gain of two. The EL2130 is capable of output currents in excess of 50mA giving it the ability to drive either double or single terminated 50Ω coaxial cables. • -3dB bandwidth = 85MHz, AV = 1 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 0.1dB to frequencies in excess of 40MHz as well as 50ns settling time to 0.2% making it an excellent choice for driving flash A/D converters. The device is available in the plastic 8-pin narrow-body small outline (SO) and the 8-pin mini DIP packages, and operates over the temperature range of 0°C to +75°C • -3dB bandwidth = 75MHz, AV = 2 • NTSC/PAL dG ≤ 0.03%, dP ≤ 0.1° • 50mA output current • Drives ±2.5V into 100Ω load • Low voltage noise = 4nV√Hz • Current mode feedback • Low cost Applications • Video amplifier • Video distribution amplifier • Residue amplifiers in ADC • Current to voltage converter • Coaxial cable driver Pinout EL2130 (8-PIN PDIP, SO) TOP VIEW Ordering Information PART NUMBER TEMP. RANGE PACKAGE PKG. NO. EL2130CN 0°C to +75°C 8-Pin PDIP MDP0031 EL2130CS 0°C to +75°C 8-Pin SO MDP0027 Manufactured under U.S. Patent No. 4,893,091. 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc. All other trademarks mentioned are the property of their respective owners. EL2130 Absolute Maximum Ratings (TA = 25°C) VS VIN ∆VIN PD Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±6V Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS Differential Input Voltage. . . . . . . . . . . . . . . . . . . . . . . .±6V Maximum Power Dissipation. . . . . . . . . . . . . . See Curves IIN IOP TA TJ TST Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±10mA Output Short Circuit Duration . . . . . . . . . . . . . . . . .≤ 5 sec Operating Temperature Range: . . . . . . . . . . . 0°C to +75°C Operating Junction Temperature . . . . . . . . . . . . . . . 150°C Storage Temperature. . . . . . . . . . . . . . . . -65°C to +150°C CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA Open-Loop DC Electrical Specifications PARAMETER VOS DESCRIPTION VS = ±5V; RL = ∞, unless otherwise specified. CONDITION Input Offset Voltage TEMP MIN 25°C TYP MAX UNITS 2.0 10 mV 15 mV TMIN, TMAX VOS/T Offset Voltage Drift +IIN +Input Current 25°C 5.5 TMIN, TMAX -IIN +Input Current 25°C 10 TMIN, TMAX +RIN +Input Resistance 25°C CIN +Input Capacitance 25°C CMRR Common Mode Rejection Ratio VCM = ±2.5V 25°C -ICMR Input Current Common Mode Rejection VCM = ±2.5V 25°C 1.0 50 PSRR Power Supply Rejection Ratio ±4.5V ≤ VS ≤ ± 6V 25°C +IPSR +Input Current Power Supply Rejection ±4.5V ≤ VS ≤ ±6V 25°C ±4.5V ≤ VS ≤ ±6V AVOL Transimpedance Open Loop DC Voltage Gain VOUT = ±2.5V, RL = 100Ω VOUT = ±2.5V, RL = 100Ω RL = 100Ω µA 50 µA dB 10 µA/V 20 µA/V 70 0.5 dB 0.5 µA/V 1.0 µA/V 5.0 µA/V 8.0 µA/V 25°C 80 145 TMIN, TMAX 70 V/mA 25°C 60 TMIN, TMAX 56 25°C 3 3.5 V 30 50 mA Ω V/mA 66 dB dB VO Output Voltage Swing IOUT Output Current 25°C ROUT Output Resistance 25°C 5 IS Quiescent Supply Current Full 17 ISC Short Circuit Current 25°C 85 2 40 60 TMIN, TMIN ROL µA pF 0.1 25°C 25 1.0 TMIN, TMIN -Input Current Power Supply Rejection µA MΩ 5 60 15 2.0 TMIN, TMIN -IPSR µV/°C 7 21 mA mA EL2130 Closed-Loop AC Electrical Specifications PARAMETER DESCRIPTION VS = ±5V, AV = +2, RF = RG = 820Ω, RL = 100Ω, TA = 25°C CONDITION MIN TYP MAX UNITS SR Slew Rate (Note 1) VO = 5VP-P 625 V/µs tR Rise Time VO = 200mV 4.6 ns tF Fall Time VO = 200mV 4.6 ns tPD Prop Delay VO = 200mV 4.0 ns SSBW 3dB Bandwidth VO = 100mV 75 MHz dG NTSC/PAL Diff Gain 0.03 % dP NTSC/PAL Diff Phase 0.10 deg (°) GFPL Gain Flatness 0.08 dB f < 40MHz NOTE: 1. Slew rate is measured with VO = 5VP-P between -1.25V and +1.25V and +1.25V and -1.25V. 3 EL2130 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 -Input Bias Current vs Temperature -Input Bias Current Power Supply Rejection Ratio -Input Bias Current Common Mode Rejection Ratio vs Temperature 4 EL2130 Typical Performance Curves Supply Current vs Temperature Transimpedance (ROL) vs Temperature Frequency Response 5 (Continued) +Input Bias Current vs Temperature Transimpedance (ROL) vs Frequency Output Voltage vs Temperature +Input Bias Current Power Supply Rejection Ratio vs Temperature Open Loop Gain vs Temperature Short Circuit Current vs Temperature EL2130 Typical Performance Curves (Continued) Large Signal Response Large Signal Response AV = +1, RF = 820Ω RL = 100Ω, CL = 12pF AV = +2, RF = 820Ω RL = 100Ω, CL = 12pF Small Signal Response Small Signal Response Long-Term Output Settling Error vs Time, VS = ±5V Short Term Output Settling Error vs Time, VS = ±5V AV = +2, RF = 820Ω RL = 100Ω, CL = 12pF AV = +1, RF = 820Ω RL = 100Ω, CL = 12pF Bandwidth and Peaking vs RF for AV = +1 Rise Time and Overshoot vs RF for AV = 1 6 Bandwidth and Peaking vs RF for AV = +2 Rise Time and Overshoot vs RF for AV = 2 8-Pin Plastic DIP Maximum Power Dissipation vs Ambient Temperature 8-Pin SO Maximum Power Dissipation vs Ambient Temperature EL2130 Applications Information Equivalent Circuit Power Supply Bypassing The EL2130 will exhibit ringing or oscillation if the power supply leads are not adequately bypassed. 0.1µF ceramic disc capacitors are suggested for both supply pins at a distance no greater than 1/2 inch from the device. Surface mounting chip capacitors are strongly recommended. 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. 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. AC Test Circuit Differential Gain and Phase are tested at a noise gain of 2 with 100Ω load. Gain and Phase measurements are made with a DC input reference voltage at 0V and compared to those made at VREF equal to 0.7V at frequencies extending to 30MHz. The EL2130 is capable of driving 100Ω to a minimum of 2.5V peak which means that it can naturally drive double terminated (50Ω) coaxial cables. Capacitive Loads As can be seen from the Bode plot, the EL2130 will peak into capacitive loads greater than 20pF. In many applications such as flash A/Ds, capacitive loading is unavoidable. In these cases, the use of a snubber network consisting of a 100Ω resistor in series with 47pF capacitor from the output to ground is recommended. All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 7