EL2245, EL2445 ® Data Sheet Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp The EL2245 and EL2445 are dual and quad versions of the popular EL2045. They are high speed, low power, low cost monolithic operational amplifiers built on Elantec's proprietary complementary bipolar process. The EL2245 and EL2445 are gain-of-2 stable and feature a 275V/µs slew rate and 100MHz bandwidth at gain-of-2 while requiring only 5.2mA of supply current per amplifier. The power supply operating range of the EL2245 and EL2445 is from ±18V down to as little as ±2V. For singlesupply operation, the EL2245 and EL2445 operate from 36V down to as little as 2.5V. The excellent power supply operating range of the EL2245 and EL2445 makes them an obvious choice for applications on a single +5V or +3V supply. The EL2245 and EL2445 also feature an extremely wide output voltage swing of ±13.6V with VS = ±15V and RL = 1kΩ. At ±5V, output voltage swing is a wide ±3.8V with RL = 500Ω and ±3.2V with RL = 150Ω. Furthermore, for single-supply operation at +5V, output voltage swing is an excellent 0.3V to 3.8V with RL = 500Ω. At a gain of +2, the EL2245 and EL2445 have a -3dB bandwidth of 100MHz with a phase margin of 50°. Because of their conventional voltage-feedback topology, the EL2245 and EL2445 allow the use of reactive or non-linear elements in their feedback network. This versatility combined with low cost and 75mA of output-current drive make the EL2245 and EL2445 an ideal choice for price-sensitive applications requiring low power and high speed. 1 March 27, 2002 FN7060 Features • 100MHz gain-bandwidth • Gain-of-2 stable • Low supply current (per amplifier) - 5.2mA at VS = ±15V • Wide supply range - 2.5V to 36V • High slew rate - 275V/µs • Fast-settling - 80ns to 0.1% for a 10V step • Low differential gain - 0.02% at AV = +2, RL = 150Ω • Low differential phase - 0.07° at AV = +2, RL = 150Ω • Wide output voltage swing - ±13.6V with VS = ±15V, RL = 1kΩ Applications • Video amplifiers • Single-supply amplifiers • Active filters/integrators • High speed signal processing • ADC/DAC buffers • Pulse/RF amplifiers • Pin diode receivers • Log amplifiers Ordering Information PACKAGE TAPE & REEL PKG. NO. EL2245CN 8-Pin PDIP - MDP0031 EL2245CS 8-Pin SO - MDP0027 EL2245CS-T7 8-Pin SO 7” MDP0027 EL2245CS-T13 8-Pin SO 13” MDP0027 EL2445CN 14-Pin PDIP - MDP0031 EL2445CS 14-Pin SO (0.150") - MDP0027 EL2445CS-T7 14-Pin SO (0.150") 7” MDP0027 EL2445CS-T13 14-Pin SO (0.150") 13” MDP0027 PART NUMBER 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. EL2245, EL2445 Pinouts EL2245 (8-PIN SO, PDIP) TOP VIEW OUT 1 IN1- 2 IN1+ 3 8 V+ + + V- 4 EL2445 [14-PIN SO (0.150”), PDIP] TOP VIEW OUT1 1 7 OUT2 IN1- 2 6 IN2- IN1+ 3 5 IN2+ V+ 4 14 OUT4 - + + - 12 IN4+ 11 V- IN2+ 5 IN2- 6 OUT2 7 2 13 IN4- 10 IN3+ - + + - 9 IN38 OUT3 EL2245, EL2445 Absolute Maximum Ratings (TA = 25°C) Supply Voltage (VS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V or 36V Input Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS Differential Input Voltage (dVIN) . . . . . . . . . . . . . . . . . . . . . . . . .±10V Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA Power Dissipation (PD) . . . . . . . . . . . . . . . . . . . . . . . . . See Curves Operating Temperature Range (TA) . . . . . . . . . . . . . .-40°C to +85°C Operating Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . +150°C Storage Temperature (TST) . . . . . . . . . . . . . . . . . . .-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 DC Electrical Specifications PARAMETER VOS VS = ±15V, RL = 1kΩ, unless otherwise specified. DESCRIPTION Input Offset Voltage CONDITION VS = ±15V TEMP MIN 25°C TYP MAX UNIT 0.5 4.0 mV 6.0 mV TMIN, TMAX TCVOS Average Offset Voltage Drift (Note 1) IB Input Bias Current VS = ±15V All 10.0 25°C 2.8 TMIN, TMAX IOS Input Offset Current VS = ±5V 25°C 2.8 VS = ±15V 25°C 50 TMIN, TMAX VS = ±5V TCIOS Average Offset Current Drift (Note 1) AVOL Open-loop Gain VS = ±15V,VOUT = ±10V, RL = 1kΩ PSRR CMRR CMIR VOUT ISC Power Supply Rejection Ratio Common-mode Rejection Ratio Common-mode Input Range Output Voltage Swing Output Short Circuit Current 3 µV/°C 8.2 µA 9.2 µA µA 300 nA 400 nA 25°C 50 nA All 0.3 nA/°C 3000 V/V 25°C 1500 TMIN, TMAX 1500 V/V VS = ±5V, VOUT = ±2.5V, RL = 500Ω 25°C 2500 V/V VS = ±5V, VOUT = ±2.5V, RL = 150Ω 25°C 1750 V/V VS = ±5V to ±15V 25°C 65 80 dB TMIN, TMAX 60 25°C 70 TMIN, TMAX 70 VCM = ±12V, VOUT = 0V dB 90 dB dB VS = ±15V 25°C ±14.0 V VS = ±5V 25°C ±4.2 V VS = +5V 25°C 4.2/0.1 V VS = ±15V, RL = 1kΩ 25°C ±13.4 ±13.6 V TMIN, TMAX ±13.1 VS = ±15V, RL = 500Ω 25°C ±12.0 ±13.4 V VS = ±5V, RL = 500Ω 25°C ±3.4 ±3.8 V VS = ±5V, RL = 150Ω 25°C ±3.2 V VS = +5V, RL = 500Ω 25°C 3.6/0.4 3.8/0.3 V TMIN, TMAX 3.5/0.5 25°C 40 TMIN, TMAX 35 V V 75 mA mA EL2245, EL2445 DC Electrical Specifications PARAMETER IS RIN VS = ±15V, RL = 1kΩ, unless otherwise specified. (Continued) DESCRIPTION Supply Current (per amplifier) Input Resistance CONDITION VS = ±15V, no load TEMP MIN TYP MAX UNIT 5.2 7 mA TMIN 7.6 mA TMAX 7.6 mA 25°C VS = ±5V, no load 25°C 5.0 mA Differential 25°C 150 kΩ Common-mode 25°C 15 MΩ CIN Input Capacitance AV = +1 @10MHz 25°C 1.0 pF ROUT Output Resistance AV = +1 25°C 50 mΩ PSOR Power-supply Operating Range Dual-supply 25°C ±2.0 ±18.0 V Single-supply 25°C 2.5 36.0 V NOTE: 1. Measured from TMIN to TMAX. Closed-Loop AC Electrical Specifications VS = ±15V, AV = +2, RL = 1kΩ unless otherwise specified. PARAMETER BW DESCRIPTION -3dB Bandwidth (VOUT = 0.4VPP) CONDITION VS = ±15V, AV = +2 TEMP MIN 25°C TYP 100 MAX UNIT MHz VS = ±15V, AV = -1 25°C 75 MHz VS = ±15V, AV = +5 25°C 20 MHz VS = ±15V, AV = +10 25°C 10 MHz VS = ±15V, AV = +20 25°C 5 MHz VS = ±5V, AV = +2 25°C 75 MHz VS = ±15V 25°C 200 MHz GBWP Gain-bandwidth Product VS = ±5V 25°C 150 MHz PM Phase Margin RL = 1 kΩ, CL = 10pF 25°C 50 ° CS Channel Separation f = 5MHz 25°C SR Slew Rate (Note 1) VS = ±15V, RL = 1kΩ 25°C VS = ±5V, RL = 500Ω 25°C FPBW Full-power Bandwidth (Note 2) VS = ±15V 25°C VS = ±5V tR, tF Rise Time, Fall Time 0.1V step OS Overshoot 0.1V step 25°C 20 % tPD Propagation Delay 25°C 2.5 ns tS Settling to +0.1% (AV = +1) 200 85 dB 275 V/µs 200 V/µs 4.4 MHz 25°C 12.7 MHz 25°C 3.0 ns 3.2 VS = ±15V, 10V step 25°C 80 ns VS = ±5V, 5V step 25°C 60 ns dG Differential Gain (Note 3) NTSC/PAL 25°C 0.02 % dP Differential Phase (Note 3) NTSC/PAL 25°C 0.07 ° eN Input Noise Voltage 10kHz 25°C 15.0 nV/√Hz iN Input Noise Current 10kHz 25°C 1.50 pA/√Hz NOTES: 1. Slew rate is measured on rising edge. 2. For VS = ±15V, VOUT = 20VPP. For VS = ±5V, VOUT = 5VPP. Full-power bandwidth is based on slew rate measurement using: FPBW = SR/(2π * Vpeak). 3. Video performance measured at VS = ±15V, AV = +2 with 2 times normal video level across RL = 150Ω. This corresponds to standard video levels across a back-terminated 75Ω load. For other values of RL, see curves. 4 EL2245, EL2445 Test Circuit Typical Performance Curves Non-Inverting Frequency Response Open-Loop Gain and Phase vs Frequency Inverting Frequency Response Frequency Response for Various Load Resistances Output Voltage Swing vs Frequency Equivalent Input Noise CMRR, PSRR and ClosedLoop Output Resistance vs Frequency 2nd and 3rd Harmonic Distortion vs Frequency Settling Time vs Output Voltage Change Supply Current vs Supply Voltage Common-Mode Input Range vs Supply Voltage Output Voltage Range vs Supply Voltage 5 EL2245, EL2445 Typical Performance Curves (Continued) Gain-Bandwidth Product vs Supply Voltage Open-Loop Gain vs Supply Voltage Slew-Rate vs Supply Voltage Bias and Offset Current vs Input Common-Mode Voltage Open-Loop Gain vs Load Resistance Voltage Swing vs Load Resistance Offset Voltage vs Temperature Bias and Output Current vs Temperature Supply Current vs Temperature Gain-Bandwidth Product vs Temperature Open-Loop Gain PSRR and CMRR vs Temperature Slew Rate vs Temperature 6 EL2245, EL2445 Typical Performance Curves (Continued) Short-Circuit Current vs Temperature Differential Gain and Phase vs DC Input Offset at 3.58MHz Differential Gain and Phase vs Number of 150Ω Loads at 4.43MHz 7 Small-Signal Step Response Differential Gain and Phase vs DC Input Offset at 4.43MHz Channel Separation vs Frequency Large-Signal Step Response Differential Gain and Phase vs Number of 150Ω Loads at 3.58MHz EL2245, EL2445 Typical Performance Curves (Continued) Gain-Bandwidth Product vs Load Capacitance Overshoot vs Load Capacitance 40 35 80 30 Overshoot (%) Gain-Bandwidth Product (MHz) 100 60 40 25 20 15 10 20 VS=±15V AV=-2 0 1 5 10 100 1k 0 50 10k VS=±15V RG=1kΩ 250 Load Capacitance (pF) 450 650 850 1050 Load Capacitance (pF) Package Power Dissipation vs Ambient Temperature JEDEC JESD51-3 Low Effective Thermal Conductivity (Single Layer) Test Board Package Power Dissipation vs Ambient Temperature JEDEC JESD51-3 Low Effective Thermal Conductivity (Single Layer) Test Board 1.8 1.2 1.6 1.54W Power Dissipation (W) Power Dissipation (W) 1 1.4 PDIP14 θJA=81°C/W 1.2 1.25W 1 PDIP8 θJA=100°C/W 0.8 0.6 0.4 1.042W SO14 θJA=120°C/W 0.8 781mW 0.6 SO8 θJA=160°C/W 0.4 0.2 0.2 0 0 0 25 50 75 85 100 Ambient Temperature (°C) Simplified Schematic (Per Amplifier) 8 125 150 0 25 50 75 85 100 Ambient Temperature (°C) 125 150 EL2245, EL2445 Burn-In Circuit (Per Amplifier) where: TMAX = Maximum ambient temperature θJA = Thermal resistance of the package PDMAX = Maximum power dissipation of each amplifier VS = Supply voltage ISMAX = Maximum supply current of each amplifier VOUTMAX = Maximum output voltage swing of the application ALL PACKAGES USE THE SAME SCHEMATIC RL = Load resistance Applications Information Product Description The EL2245 and EL2445 are dual and quad low-power wideband monolithic operational amplifiers built on Elantec's proprietary high-speed complementary bipolar process. The EL2245 and EL2445 use a classical voltage-feedback topology which allows them to be used in a variety of applications where current-feedback amplifiers are not appropriate because of restrictions placed upon the feedback element used with the amplifier. The conventional topology of the EL2245 and EL2445 allows, for example, a capacitor to be placed in the feedback path, making it an excellent choice for applications such as active filters, sample-and-holds, or integrators. Similarly, because of the ability to use diodes in the feedback network, the EL2245 and EL2445 are an excellent choice for applications such as fast log amplifiers. Power Dissipation With the wide power supply range and large output drive capability of the EL2245 and EL2445, it is possible to exceed the 150°C maximum junction temperatures under certain load and power-supply conditions. It is therefore important to calculate the maximum junction temperature (TJMAX) for all applications to determine if power supply voltages, load conditions, or package type need to be modified for the EL2245 and EL2445 to remain in the safe operating area. These parameters are related as follows: T JMAX = T MAX + ( Θ JA × PD MAXTOTAL ) where: PDMAXTOTAL is the sum of the maximum power dissipation of each amplifier in the package (PDMAX). PDmax for each amplifier can be calculated as follows: V OUTMAX PD MAX = 2 × V S × I SMAX + ( V S – V OUTMAX ) × ---------------------------R L 9 To serve as a guide for the user, we can calculate maximum allowable supply voltages for the example of the video cabledriver below since we know that TJMAX = 150°C, TMAX = 85°C, ISMAX = 7.6mA per amplifier, and the package θJAs are shown in Table 1. If we assume (for this example) that we are driving a back-terminated video cable, then the maximum average value (over duty-cycle) of VOUTMAX is 1.4V, and RL = 150Ω, giving the results seen in Table 1. TABLE 1. PACKAGE ΘJA MAX PDISS @TMAX MAX VS EL2245CN PDIP8 100°C/W 0.650W @85°C ±16.6V EL2245CS SO8 160°C/W 0.406W @85°C ±10.5V EL2445CN PDIP14 81°C/W 0.802W @85°C ±11.5V EL2445CS SO14 120°C/W 0.542W @85°C ±7.5V PART DUALS QUADS Single-Supply Operation The EL2245 and EL2445 have been designed to have a wide input and output voltage range. This design also makes the EL2245 and EL2445 an excellent choice for singlesupply operation. Using a single positive supply, the lower input voltage range is within 100mV of ground (RL = 500Ω), and the lower output voltage range is within 300mV of ground. Upper input voltage range reaches 4.2V, and output voltage range reaches 3.8V with a 5V supply and RL = 500Ω. This results in a 3.5V output swing on a single 5V supply. This wide output voltage range also allows singlesupply operation with a supply voltage as high as 36V or as low as 2.5V. On a single 2.5V supply, the EL2245 and EL2445 still have 1V of output swing. Gain-Bandwidth Product and the -3dB Bandwidth The EL2245 and EL2445 have a bandwidth at gain-of-2 of 100MHz while using only 5.2mA of supply current per amplifier. For gains greater than 4, their 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, higher-order poles in the amplifiers' transfer EL2245, EL2445 function contribute to even higher closed loop bandwidths. For example, the EL2245 and EL2445 have a -3dB bandwidth of 100MHz at a gain of +2, dropping to 20MHz at a gain of +5. It is important to note that the EL2245 and EL2445 have 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 EL2245 and EL2445 in a gain of +2 only exhibit 1.0dB of peaking with a 1kΩ load. Video Performance An industry-standard method of measuring the video distortion of components such as the EL2245/ EL2445 is to measure the amount of differential gain (dG) and differential phase (dP) that they introduce. 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 or 4.43MHz for PAL. 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 (75Ω in series at the drive end, and 75Ω 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 EL2245 and EL2445 have been designed as an economical solution for applications requiring low video distortion. They have been thoroughly characterized for video performance in the topology described above, and the results have been included as typical dG and dP specifications and as typical performance curves. In a gain of +2, driving 150Ω, with standard video test levels at the input, the EL2245 and EL2445 exhibit dG and dP of only 0.02% and 0.07° at NTSC and PAL. Because dG and dP can vary with different DC offsets, the video performance of the EL2245 and EL2445 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. Output Drive Capability The EL2245 and EL2445 have been designed to drive low impedance loads. They can easily drive 6VPP into a 150Ω load. This high output drive capability makes the EL2245 and EL2445 an ideal choice for RF, IF and video applications. Furthermore, the current drive of the EL2245 and EL2445 remains a minimum of 35mA at low temperatures. Printed-Circuit Layout The EL2245 and EL2445 are well behaved, and easy to apply in most applications. However, a few simple 10 techniques will help assure rapid, high quality results. 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 0.1µF ceramic capacitor is recommended for bypassing both supplies. Lead lengths should be as short as possible, and bypass capacitors should be as close to the device pins as possible. For good AC performance, parasitic capacitances should be kept to a minimum at both inputs and at the output. Resistor values should be kept under 5kΩ 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 their parasitic inductance. Similarly, capacitors should be low-inductance for best performance. The EL2245 and EL2445 Macromodel This macromodel has been developed to assist the user in simulating the EL2245 and EL2445 with surrounding circuitry. It has been developed for the PSPICE simulator (copywritten by the Microsim Corporation), and may need to be rearranged for other simulators. It approximates DC, AC, and transient response for resistive loads, but does not accurately model capacitive loading. This model is slightly more complicated than the models used for low-frequency op-amps, but it is much more accurate for AC analysis. The model does not simulate these characteristics accurately: • Noise • Settling time • Non-linearities • Temperature effects • Manufacturing variations • CMRR • PSRR EL2245, EL2445 EL2245 and EL2445 Macromodel * Connections: +input * | -input * | | +Vsupply * | | | -Vsupply * | | | | output * | | | | | .subckt M2245 3 2 7 4 6 * * Input stage * ie 7 37 1mA r6 36 37 400 r7 38 37 400 rc1 4 30 850 rc2 4 39 850 q1 30 3 36 qp q2 39 2 38 qpa ediff 33 0 39 30 1.0 rdiff 33 0 1Meg * * Compensation Section * ga 0 34 33 0 1m rh 34 0 2Meg ch 34 0 1.3pF rc 34 40 1K cc 40 0 1pF * * Poles * ep 41 0 40 0 1 rpa 41 42 200 cpa 42 0 1pF rpb 42 43 200 cpb 43 0 1pF * * Output Stage * ios1 7 50 1.0mA ios2 51 4 1.0mA q3 4 43 50 qp q4 7 43 51 qn q5 7 50 52 qn q6 4 51 53 qp ros1 52 6 25 ros2 6 53 25 * * Power Supply Current * ips 7 4 2.7mA * * Models * .model qn npn(is=800E-18 bf=200 tf=0.2nS) .model qpa pnp(is=864E-18 bf=100 tf=0.2nS) .model qp pnp(is=800E-18 bf=125 tf=0.2nS) .ends 11 EL2245, EL2445 EL2245 and EL2445 Macromodel (Continued) 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 12