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CT RODU MENT ETE P REPLACE ter at OL OBS NDED Cen tsc pport m/ ME COM hnical Su ntersil.co E ec September 26, 2001 NO R DataTSheetwww.i r or ct ou conta -INTERSIL 1-888
EL2073
FN7034
200MHz Unity-Gain Stable Operational Amplifier
The EL2073 is a precision voltagefeedback amplifier featuring a 200MHz gain-bandwidth product, fast settling time, excellent differential gain and differential phase performance, and a minimum of 50mA output current drive over temperature. The EL2073 is unity-gain stable with a -3dB bandwidth of 400MHz. It has a very low 200V of input offset voltage, only 2A of input bias current, and a fully symmetrical differential input. Like all voltage-feedback operational amplifiers, the EL2073 allows the use of reactive or non-linear components in the feedback loop. This combination of speed and versatility makes the EL2073 the ideal choice for all op-amp applications requiring high speed and precision, including active filters, integrators, sample-and-holds, and log amps. The low distortion, high output current, and fast settling makes the EL2073 an ideal amplifier for signal-processing and digitizing systems.
Features
* 200MHz gain-bandwidth product * Unity-gain stable * Ultra low video distortion = 0.01%/0.015 @ NTSC/PAL * Conventional voltage-feedback topology * Low offset voltage = 200V * Low bias current = 2A * Low offset current = 0.1A * Output current = 50mA over temperature * Fast settling = 13ns to 0.1% * Low distortion = -60dB HD2, -70dB HD3 @ 20MHz, 2VPP, AV = +1
Applications
* High resolution video * Active filters/integrators * High-speed signal processing
Pinout
EL2073 (8-PIN PDIP, SO) TOP VIEW
* ADC/DAC buffers * Pulse/RF amplifiers * Pin diode receivers * Log amplifiers * Photo multiplier amplifiers * High speed sample-and-holds
Ordering Information
PART NUMBER EL2073CN EL2073CS TEMP. RANGE -40C to +85C -40C to +85C PACKAGE 8-Pin PDIP 8-Pin SO PKG. NO. MDP0031 MDP0027
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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.
EL2073
Absolute Maximum Ratings (TA = 25C)
Supply Voltage (VS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7V Output Current
Output is short-circuit protected to ground, however, maximum reliability is obtained if IOUT does not exceed 70mA.
Common-Mode Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V
Thermal Resistance. . . . . . . . . . . . . . . . . . . . . . . . .JA = 95C/W PDIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . JA = 175C/W SO-8 Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40C to +85C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-60C to +150C
Note: See EL2071/EL2171 for Thermal Impedance curves.
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 = 100, unless otherwise specified TEST CONDITIONS VCM = 0V TEMP 25C TMIN, TMAX MIN TYP 0.2 MAX 1.5 3 8 2 2 0.1 6 6 1 2 60 60 65 65 21 25 25 15 1 1 1 20 3 2.5 50 50 3.5 3.5 3 3 3 2.5 500 400 1000 V/V V/V 3.4 3.6 4 70 3.5 90 80 UNIT mV mV V/C A A A A dB dB dB dB mA mA k pF M pF m V V mA mA V V V V V
TCVOS IB
Average Offset Voltage Drift Input Bias Current
(Note 1)
All 25C TMIN, TMAX
IOS
Input Offset Current
VCM = 0V
25C TMIN, TMAX
PSRR
Power Supply Rejection Ratio Common Mode Rejection Ratio Supply Current--Quiescent
(Note 2)
25C TMIN, TMAX
CMRR
(Note 3)
25C TMIN, TMAX
IS
No Load
25C TMIN, TMAX
RIN (diff) CIN (diff) RIN (cm) CIN (cm) ROUT CMIR
RIN (Differential) CIN (Differential) RIN (Common-Mode) CIN (Common-Mode) Output Resistance Common-Mode Input Range Output Current
Open-Loop Open-Loop
25C 25C 25C 25C 25C 25C TMIN, TMAX 25C TMIN, TMAX
IOUT
VOUT
Output Voltage Swing
No Load
25C TMIN, TMAX
VOUT 100
Output Voltage Swing
100
25C TMIN, TMAX
VOUT 50
Output Voltage Swing
50
25C TMIN, TMAX
AVOL 100
Open-Loop Gain
100
25C TMIN, TMAX
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EL2073
Open-Loop DC Electrical Specifications
PARAMETER AVOL 50 DESCRIPTION Open-Loop Gain VS = 5V, RL = 100, unless otherwise specified (Continued) TEST CONDITIONS 50 TEMP 25C TMIN, TMAX eN@ > 1MHz iN@ > 100kHz NOTES: 1. Measured from TMIN, TMAX. 2. VCC = 4.5V to 5.5V. 3. VIN = 2.5V, VOUT = 0V Noise Voltage 1-100MHz Noise Current 100k-100MHz 25C 25C MIN 400 300 2.3 3.2 TYP 800 MAX UNIT V/V V/V nV/Hz pA/Hz
Closed-Loop AC Electrical Specifications
PARAMETER SSBW DESCRIPTION -3dB Bandwidth (VOUT = 0.4VPP)
VS = 5V, AV = +1, Rf = 0, RL = 100 unless otherwise specified TEST CONDITIONS AV = +1 AV = -1 AV = +2 TEMP 25C 25C 25C TMIN, TMAX AV = +5 AV = +10 25C 25C 25C All All 25C TMIN, TMAX 50 11 150 125 40 20 200 85 16 0 0.5 0.5 1 3 3 0.1 0.5 0.5 1 60 2 15 13 25 5 175 250 1.8 MIN 150 TYP 300 200 200 MAX UNIT MHz MHz MHz MHz MHz MHz MHz MHz MHz dB dB dB dB dB dB ns ns ns ns % V/s
GBWP LSBWa LSBWb GFPL
Gain-Bandwidth Product -3dB Bandwidth -3dB Bandwidth Peaking (< 50MHz)
AV = +10 VOUT = 2VPP (Note 1) VOUT = 5VPP (Note 1) VOUT = 0.4VPP
GFPH
Peaking (> 50MHz)
VOUT = 0.4VPP
25C TMIN, TMAX
GFR
Rolloff (< 100MHz)
VOUT = 0.4VPP
25C TMIN, TMAX
LPD PM tr1, tf1 tr2, tf2 ts1 ts2 OS SR
Linear Phase Deviation (< 100MHz) VOUT = 0.4VPP Phase Margin Rise Time, Fall Time Rise Time, Fall Time Settling to 0.1% (AV = -1) Settling to 0.01% (AV = -1) Overshoot Slew Rate AV = +1 0.4V Step, AV = +2 5V Step, AV = +2 2V Step 2V Step 2V Step 2V Step
All 25C 25C 25C 25C 25C 25C All
DISTORTION (Note 2) HD2a HD2b HD2c 2nd Harmonic Distortion 2nd Harmonic Distortion 2nd Harmonic Distortion @ 10MHz, AV = +2 @ 20MHz, AV = +1 @ 20MHz, AV = +2 25C 25C 25C TMIN, TMAX HD3a HD3b 3rd Harmonic Distortion 3rd Harmonic Distortion @ 10MHz, AV = +2 @ 20MHz, AV = +1 25C 25C -72 -70 -65 -60 -55 -55 -50 -50 -45 -60 -55 dBc dBc dBc dBc dBc dBc
3
EL2073
Closed-Loop AC Electrical Specifications
PARAMETER HD3c DESCRIPTION 3rd Harmonic Distortion VS = 5V, AV = +1, Rf = 0, RL = 100 unless otherwise specified (Continued) TEST CONDITIONS @ 20MHz, AV = +2 TEMP 25C TMIN, TMAX VIDEO PERFORMANCE (Note 3) dG dP dG dP VBW NOTES: 1. Large-signal bandwidth calculated using LSBW = Slew Rate / 2 VPEAK. 2. All distortion measurements are made with VOUT = 2VPP, RL = 100. 3. Video performance measured at AV = +1 with 2 times normal video level across RL = 100. This corresponds to standard video levels across a back-terminated 50 load, i.e., 0-100 IRE, 40IREpp giving a 1VPP video signal across the 50 load. For other values of RL, see curves. Differential Gain Differential Phase Differential Gain Differential Phase 0.1dB Bandwidth Flatness NTSC NTSC 30MHz 30MHz 25C 25C 25C 25C 25C 25 0.01 0.015 0.1 0.1 50 0.05 0.05 %pp pp %pp pp MHz MIN TYP -70 MAX -60 -60 UNIT dBc dBc
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EL2073 Typical Performance Curves
Non-Inverting Frequency Response Inverting Frequency Response Frequency Response for Various RLs
Open Loop Gain and Phase
Output Voltage Swing vs Frequency
Equivalent Input Noise
PSRR, CMRR, and Closed-Loop RO vs Frequency
2nd and 3rd Harmonic Distortion vs Frequency
2-Tone, 3rd Order Intermodulation Intercept
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EL2073 Typical Performance Curves
(Continued)
Series Resistor and Resulting Bandwidth vs Capacitive Load
Settling Time vs Output Voltage Change
Settling Time vs Closed-Loop Gain
Common-Mode Rejection Ratio vs Input Common-Mode Voltage
Bias and Offset Current vs Input Common-Mode Voltage
Supply Current vs Temperature
Bias and Offset Current vs Temperature
Offset Voltage vs Temperature
AVOL, PSRR, and CMRR vs Temperature
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EL2073 Typical Performance Curves
(Continued)
Small Signal Transient Response
Large Signal Transient Response
Differential Gain and Phase vs DC Input Offset at 3.58MHz
Differential Gain and Phase vs DC Input Offset at 4.43MHz
Differential Gain and Phase vs DC Input Offset at 30MHz
Differential Gain and Phase vs Number of 150 Loads at 3.58MHz
Differential Gain and Phase vs Number of 150 Loads at 4.43MHz
Differential Gain and Phase vs Number of 150 Loads at 30MHz
7
EL2073 Equivalent Circuit
Burn-In Circuit
filters, sample-and-holds, or integrators. Similarly, because of the ability to use diodes in the feedback network, the EL2073 is an excellent choice for applications such as log amplifiers. The EL2073 also has excellent DC specifications: 200V, VOS, 2A IB, 0.1A IOS, and 90dB of CMRR. These specifications allow the EL2073 to be used in DC-sensitive applications such as difference amplifiers. Furthermore, the current noise of the EL2073 is only 3.2pA/Hz, making it an excellent choice for high-sensitivity transimpedance amplifier configurations.
Gain-Bandwidth Product
ALL PACKAGES USE THE SAME SCHEMATIC
Applications Information
Product Description
The EL2073 is a wideband monolithic operational amplifier built on a high-speed complementary bipolar process. The EL2073 uses a classical voltage-feedback topology which allows it to be used in a variety of applications where currentfeedback amplifiers are not appropriate because of restrictions placed upon the feedback element used with the amplifier. The conventional topology of the EL2073 allows, for example, a capacitor to be placed in the feedback path, making it an excellent choice for applications such as active 8
The EL2073 has a gain-bandwidth product of 200MHz. For gains greater than 4, its closed-loop -3dB bandwidth is approximately equal to the gain-bandwidth product divided by the noise gain of the circuit. For gains less than 4, higherorder poles in the amplifier's transfer function contribute to even higher closed loop bandwidths. For example, the EL2073 has a -3dB bandwidth of 400MHz at a gain of +1, dropping to 200MHz at a gain of +2. It is important to note that the EL2073 has been designed so that this "extra" bandwidth in low-gain applications does not come at the expense of stability. As seen in the typical performance curves, the EL2073 in a gain of +1 only exhibits 1dB of peaking with a 100 load.
EL2073
Video Performance
An industry-standard method of measuring the video distortion of a component such as the EL2073 is to measure the amount of differential gain (dG) and differential phase (dP) that it introduces. To make these measurements, a 0.286VPP (40 IRE) signal is applied to the device with 0V DC offset (0 IRE) at either 3.58MHz for NTSC, 4.43MHz for PAL, or 30MHz for HDTV. A second measurement is then made at 0.714V DC offset (100 IRE). Differential gain is a measure of the change in amplitude of the sine wave, and is measured in percent. Differential phase is a measure of the change in phase, and is measured in degrees. For signal transmission and distribution, a back-terminated cable (75 in series at the drive end, and 75 to ground at the receiving end) is preferred since the impedance match at both ends will absorb any reflections. However, when double termination is used, the received signal is halved; therefore a gain of 2 configuration is typically used to compensate for the attenuation. The EL2073 has been designed to be among the best video amplifiers in the marketplace today. It has been thoroughly characterized for video performance in the topology described above, and the results have been included as minimum dG and dP specifications and as typical performance curves. In a gain of +2, driving 150, with standard video test levels at the input, the EL2073 exhibits dG and dP of only 0.01% and 0.015 at NTSC and PAL. Because dG and dP vary with different DC offsets, the superior video performance of the EL2073 has been characterized over the entire DC offset range from -0.714V to +0.714V. For more information, refer to the curves of dG and dP vs DC Input Offset. The excellent output drive capability of the EL2073 allows it to drive up to 4 back-terminated loads with excellent video performance. With 4 150 loads, dG and dP are only 0.15% and 0.08 at NTSC and PAL. For more information, refer to the curves for Video Performance vs Number of 150 Loads. performance, capacitive loads should be reduced as much as possible or isolated via a series output resistor. Coax lines can be driven, as long as they are terminated with their characteristic impedance. When properly terminated, the capacitance of coaxial cable will not add to the capacitive load seen by the amplifier. Capacitive loads greater than 10pF should be buffered with a series resistor (Rs) to isolate the load capacitance from the amplifier output. A curve of recommended Rs vs Cload has been included for reference. Values of Rs were chosen to maximize resulting bandwidth without peaking.
Printed-Circuit Layout
As with any high-frequency device, good PCB layout is necessary for optimum performance. Ground-plane construction is highly recommended, as is good power supply bypassing. A 1F-10F tantalum capacitor is recommended in parallel with a 0.01F ceramic capacitor. All pin lengths should be as short as possible, and all bypass capacitors should be as close to the device pins as possible. Parasitic capacitances should be kept to an absolute minimum at both inputs and at the output. Resistor values should be kept under 1000 to 2000 because of the RC time constants associated with the parasitic capacitance. Metal-film and carbon resistors are both acceptable, use of wire-wound resistors is not recommended because of parasitic inductance. Similarly, capacitors should be lowinductance for best performance. If possible, solder the EL2073 directly to the PC board without a socket. Even high quality sockets add parasitic capacitance and inductance which can potentially degrade performance. Because of the degradation of AC performance due to parasitics, the use of surface-mount components (resistors, capacitors, etc.) is also recommended.
Output Drive Capability
The EL2073 has been optimized to drive 50 and 75 loads. It can easily drive 6VPP into a 50 load. This high output drive capability makes the EL2073 an ideal choice for RF, IF and video applications. Furthermore, the current drive of the EL2073 remains a minimum of 50mA at low temperatures. The EL2073 is current-limited at the output, allowing it to withstand momentary shorts to ground. However, power dissipation with the output shorted can be in excess of the power-dissipation capabilities of the package.
Capacitive Loads
Although the EL2073 has been optimized to drive resistive loads as low as 50, capacitive loads will decrease the amplifier's phase margin which may result in peaking, overshoot, and possible oscillation. For optimum AC 9
EL2073 EL2073 Macromodel
* * Connections: input * | -input * | | +Vsupply * | | | -Vsupply * | | | | output * | | | | | .subckt M2073C 3 2 7 4 6 * *Input Stage * ie 37 4 1mA r6 36 37 125 r7 38 37 125 rc1 7 30 200 rc2 7 39 200 q1 30 3 36 qn q2 39 2 38 qna ediff 33 0 39 30 1 rdiff 33 0 1Meg * * Compensation Section * ga 0 34 33 0 2m rh 34 0 500K ch 34 0 1.2pF rc 34 40 400 cc 40 0 0.3pF * * Poles * ep 41 0 40 0 1 rpa 41 42 75 cpa 42 0 0.5pF rpb 42 43 50 cpb 43 0 0.5pF * * Output Stage * ios1 7 50 3.0mA ios2 51 4 3.0mA q3 4 43 50 qp q4 7 43 51 qn q5 7 50 52 qn q6 4 51 53 qp ros1 52 6 2 ros2 6 53 2 * Power Supply Current * ips 7 4 11.4mA * Models * .model qna npn(is800e-18 bf170 tf0.2ns) .model qn npn(is810e-18 bf200 tf0.2ns) .model qp pnp(is800e-18 bf200 tf0.2ns) .ends 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 10

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