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UCT T PROD EMEN LETE REPLAC enter at OBSO NDED ort C om/tsc ME c Supp ECOM echnical .intersil. NO R our T Data Sheet www December 1995, Rev. C ct L or conta -INTERSI 1-888
EL2130
FN7047
85MHz Current Feedback Amplifier
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 50 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 0.1dB 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 0C to +75C
Features
* -3dB bandwidth = 85MHz, AV = 1 * -3dB bandwidth = 75MHz, AV = 2 * NTSC/PAL dG 0.03%, dP 0.1 * 50mA output current * Drives 2.5V into 100 load * Low voltage noise = 4nVHz * 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 EL2130CN EL2130CS TEMP. RANGE 0C to +75C 0C to +75C PACKAGE 8-Pin PDIP 8-Pin SO PKG. NO. MDP0031 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 (c) 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 = 25C)
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: . . . . . . . . . . . 0C to +75C Operating Junction Temperature . . . . . . . . . . . . . . . 150C Storage Temperature. . . . . . . . . . . . . . . . -65C to +150C
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 Input Offset Voltage
VS = 5V; RL = , unless otherwise specified. CONDITION TEMP 25C TMIN, TMAX MIN TYP 2.0 MAX 10 15 7 25C TMIN, TMAX 5.5 15 25 10 40 50 1.0 2.0 1.0 50 60 5 10 20 60 70 0.1 0.5 1.0 0.5 5.0 8.0 80 70 60 56 3 30 3.5 50 5 17 85 21 66 145 UNITS mV mV
VOS/T +IIN
Offset Voltage Drift +Input Current
V/C A A A A
M pF dB
-IIN
+Input Current
25C TMIN, TMAX
+RIN CIN CMRR -ICMR
+Input Resistance +Input Capacitance Common Mode Rejection Ratio Input Current Common Mode Rejection Power Supply Rejection Ratio +Input Current Power Supply Rejection -Input Current Power Supply Rejection Transimpedance VCM = 2.5V VCM = 2.5V
25C 25C 25C 25C TMIN, TMIN
A/V A/V
dB
PSRR +IPSR
4.5V VS 6V 4.5V VS 6V
25C 25C TMIN, TMIN
A/V A/V A/V A/V
V/mA V/mA dB dB V mA
-IPSR
4.5V VS 6V
25C TMIN, TMIN
ROL
VOUT = 2.5V, RL = 100 VOUT = 2.5V, RL = 100 RL = 100
25C TMIN, TMAX
AVOL
Open Loop DC Voltage Gain Output Voltage Swing Output Current Output Resistance Quiescent Supply Current Short Circuit Current
25C TMIN, TMAX 25C 25C 25C Full 25C
VO IOUT ROUT IS ISC
mA mA
2
EL2130
Closed-Loop AC Electrical Specifications
PARAMETER SR tR tF tPD SSBW dG dP GFPL DESCRIPTION Slew Rate (Note 1) Rise Time Fall Time Prop Delay 3dB Bandwidth NTSC/PAL Diff Gain NTSC/PAL Diff Phase Gain Flatness f < 40MHz VS = 5V, AV = +2, RF = RG = 820, RL = 100, TA = 25C CONDITION VO = 5VP-P VO = 200mV VO = 200mV VO = 200mV VO = 100mV MIN TYP 625 4.6 4.6 4.0 75 0.03 0.10 0.08 MAX UNITS V/s ns ns ns MHz % deg () dB
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 Common Mode Rejection Ratio vs Frequency
Equivalent Input Noise
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
(Continued)
+Input Bias Current vs Temperature +Input Bias Current Power Supply Rejection Ratio 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
5
EL2130 Typical Performance Curves
Large Signal Response
(Continued)
Large Signal Response Long-Term Output Settling Error vs Time, VS = 5V
AV = +1, RF = 820 RL = 100, CL = 12pF
AV = +2, RF = 820 RL = 100, CL = 12pF
Small Signal Response
Small Signal Response
Short Term Output Settling Error vs Time, VS = 5V
AV = +1, RF = 820 RL = 100, CL = 12pF
AV = +2, RF = 820 RL = 100, CL = 12pF
Bandwidth and Peaking vs RF for AV = +1
Bandwidth and Peaking vs RF for AV = +2
8-Pin Plastic DIP Maximum Power Dissipation vs Ambient Temperature
Rise Time and Overshoot vs RF for AV = 1
Rise Time and Overshoot vs RF for AV = 2
8-Pin SO Maximum Power Dissipation vs Ambient Temperature
6
EL2130 Applications Information
Power Supply Bypassing
The EL2130 will exhibit ringing or oscillation if the power supply leads are not adequately bypassed. 0.1F 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.
Equivalent Circuit
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. Differential Gain and Phase are tested at a noise gain of 2 with 100 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 100 to a minimum of 2.5V peak which means that it can naturally drive double terminated (50) coaxial cables.
AC Test Circuit
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 100 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

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