EL5108, EL5308 ® Data Sheet August 31, 2004 450MHz Fixed Gain Amplifiers with Enable Features The EL5108 and EL5308 are fixed gain amplifiers with a bandwidth of 450MHz. This makes these amplifiers ideal for today’s high speed video and monitor applications. They feature internal gain-setting resistors and can be configured in a gain of +1, -1 or +2. The same bandwidth is seen in both gain-of-1 and gain-of-2 applications. • Pb-free Available as an Option The EL5108 and EL5308 also incorporate an enable and disable function to reduce the supply current to 25µA typical per amplifier. Allowing the CE pin to float or applying a low logic level will enable the amplifier. The EL5108 is offered in the 6-pin SOT-23 and the industrystandard 8-pin SO packages and the EL5308 is available in the 16-pin SO and 16-pin QSOP packages. All operate over the industrial temperature range of -40°C to +85°C. Ordering Information PART NUMBER FN7358.4 • Gain selectable (+1, -1, +2) • 450MHz -3dB BW (AV = -1, +1, +2) • 3.5mA supply current per amplifier • Single and dual supply operation, from 5V to 12V • Available in SOT-23 packages • 350MHz, 1.5mA product available (EL5106 & EL5306) Applications • Battery powered equipment • Handheld, portable devices • Video amplifiers • Cable drivers PACKAGE TAPE & REEL PKG. DWG. # EL5108IW-T7 6-Pin SOT-23 7” (3K pcs) MDP0038 EL5108IW-T7A 6-Pin SOT-23 7” (250 pcs) MDP0038 EL5108IS 8-Pin SO - MDP0027 EL5108IS-T7 8-Pin SO 7” MDP0027 EL5108IS-T13 8-Pin SO 13” MDP0027 EL5308IS 16-Pin SO (0.150”) - MDP0027 EL5308IS-T7 16-Pin SO (0.150”) 7” MDP0027 EL5308IS-T13 16-Pin SO (0.150”) 13” MDP0027 EL5308IU 16-Pin QSOP - MDP0040 EL5308IU-T7 16-Pin QSOP 7” MDP0040 EL5308IU-T13 16-Pin QSOP 13” MDP0040 EL5308IUZ (See Note) 16-Pin QSOP (Pb-free) - MDP0040 EL5308IUZ-T7 (See Note) 16-Pin QSOP (Pb-free) 7” MDP0040 EL5308IUZT13 (See Note) 16-Pin QSOP (Pb-free) 13” MDP0040 • RGB amplifiers NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which is compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J Std-020B. 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. 2002-2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc. All other trademarks mentioned are the property of their respective owners. EL5108, EL5308 Pinouts EL5308 (16-PIN SO, QSOP) TOP VIEW EL5108 (8-PIN SO) TOP VIEW NC 1 IN- 2 + IN+ 3 VS- 4 8 CE INA+ 1 7 VS+ CEA 2 6 OUT VS- 3 5 NC CEB 4 16 INA+ 14 VS+ + - INB+ 5 EL5108 (6-PIN SOT-23) TOP VIEW 6 VS+ OUT 1 VS- 2 5 CE + - IN+ 3 4 IN- 2 INC+ 8 13 OUTB 12 INB- NC 6 CEC 7 15 OUTA 11 NC + - 10 OUTC 9 INC- EL5108, EL5308 Absolute Maximum Ratings (TA = 25°C) Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . 13.2V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 50mA Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125°C Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves Pin Voltages. . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.5V to VS+ +0.5V Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°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 Electrical Specifications PARAMETER VS+ = +5V, VS- = -5V, RL = 150Ω, TA = 25°C unless otherwise specified. DESCRIPTION CONDITIONS MIN TYP MAX UNIT AC PERFORMANCE BW -3dB Bandwidth AV = +1 440 MHz AV = -1 445 MHz AV = +2 450 MHz 40 MHz 4500 V/µs 10 ns 2 nV/√Hz BW1 0.1dB Bandwidth AV = +2 SR Slew Rate VO = -2.5V to +2.5V, AV = +2 tS 0.1% Settling Time VOUT = -2.5V to +2.5V, AV = +2 eN Input Voltage Noise iN Input Current Noise f = 2kHz 12 pA/√Hz dG Differential Gain Error (Note 1) AV = +2 0.01 % dP Differential Phase Error (Note 1) AV = +2 0.01 ° 3500 DC PERFORMANCE VOS Offset Voltage TCVOS Input Offset Voltage Temperature Coefficient Measured from TMIN to TMAX AE Gain Error VO = -3V to +3V, RL = 150Ω RF, RG Internal RF and RG -8 +3 +8 5 0.7 mV µV/°C 2.5 % 325 Ω ±3.3 V INPUT CHARACTERISTICS CMIR Common Mode Input Range +IIN + Input Current RIN Input Resistance CIN Input Capacitance ±3 2 at IN+ 8 µA 0.7 MΩ 1 pF OUTPUT CHARACTERISTICS VO RL = 150Ω to GND ±3.6 ±3.8 V RL = 1kΩ to GND ±3.8 ±4.0 V Output Current RL = 10Ω to GND 100 135 mA ISON Supply Current - Enabled (per amplifier) No load, VIN = 0V 3.18 3.7 4.35 mA ISOFF Supply Current - Disabled (per amplifier) No load, VIN = 0V 9 25 µA PSRR Power Supply Rejection Ratio 75 IOUT Output Voltage Swing SUPPLY 3 DC, VS = ±4.75V to ±5.25V dB EL5108, EL5308 Electrical Specifications PARAMETER VS+ = +5V, VS- = -5V, RL = 150Ω, TA = 25°C unless otherwise specified. (Continued) DESCRIPTION CONDITIONS MIN TYP MAX UNIT ENABLE tEN Enable Time 280 ns tDIS Disable Time (Note 2) 560 ns IIHCE CE Pin Input High Current CE = VS+ -1 IILCE CE Pin Input Low Current CE = VS- +1 VIHCE CE Input High Voltage for Power-down VILCE CE Input Low Voltage for Enable 5 25 µA -1 µA VS+ -1 V VS+ -3 V NOTES: 1. Standard NTSC test, AC signal amplitude = 286mVP-P, f = 3.58MHz 2. Measured from the application of the CE logic signal until the output voltage is at the 50% point between initial and final values Pin Descriptions EL5108 (SO8) EL5108 (SOT23-6) 1, 5 2 4 EL5308 (SO16, QSOP16) PIN NAME 6, 11 NC Not connected 9, 12, 16 IN- Inverting input FUNCTION EQUIVALENT CIRCUIT RG IN+ IN- RF CIRCUIT 1 3 3 1, 5, 8 IN+ Non-inverting input 4 2 3 VS- Negative supply 6 1 10, 13, 15 OUT Output (Reference Circuit 1) OUT RF CIRCUIT 2 7 6 14 VS+ Positive supply 8 5 2, 4, 7 CE Chip enable VS+ CE VSCIRCUIT 3 4 EL5108, EL5308 Typical Performance Curves 135 VS=±5V VIN=200mVP-P 3 RL=150Ω 45 AV = -1 1 PHASE (°) NORMALIZED GAIN (dB) 5 AV = 2 -1 VS=±5V VIN=200VP-P RL=150Ω AV = -1 -45 -135 AV = 1 AV = 2 -3 -225 -5 100K -315 100K AV = 1 1M 10M 100M 1G 1M FREQUENCY (Hz) FIGURE 1. FREQUENCY RESPONSE 11 9 10M 100M 1G FREQUENCY (Hz) FIGURE 2. PHASE RESPONSE 11 VS=±5V AV=2 RL=150Ω VS=±5V AV=2 RL = 500Ω 9 5 GAIN (dB) GAIN (dB) RL = 150Ω VOP-P = 400mV 7 VOP-P = 2V 3 7 5 RL = 100Ω 3 1 100K 1M 10M 100M RL = 50Ω 1 100K 1G 1M FREQUENCY (Hz) FIGURE 3. FREQUENCY RESPONSE vs OUTPUT VOLTAGE GAIN (dB) 9 1.2 VS=±5V AV=2 RL=150Ω CL = 6.8pF 1 CL = 4.7pF 7 CL = 2.2pF 5 CL = 0pF 1G VS=±5V RL=150Ω AV = -1 AV = 1 0.8 AV = 2 0.6 0.4 3 1 100K 100M FIGURE 4. FREQUENCY RESPONSE vs RL DELAY (ns) 11 10M FREQUENCY (Hz) 0.2 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 5. FREQUENCY RESPONSE FOR VARIOUS CL 5 0 100K 1M 10M 100M FREQUENCY (Hz) FIGURE 6. GROUP DELAY vs FREQUENCY 1G EL5108, EL5308 Typical Performance Curves (Continued) 100 15 AV=2 RL=150Ω 10 IMPEDENCE (Ω) GAIN (dB) -5 -25 -45 -65 1 0.1 0.01 -85 100K 1M 10M 100M 1G 0.002 10K 100K FIGURE 7. INPUT TO OUTPUT ISOLATION vs FREQUENCY (FOR DISABLE MODE) 100M 0 -10 VS=±5V AV=2 -20 100 PSRR (dB) VN (nV/√Hz), IN (pA/√Hz) 10M FIGURE 8. OUTPUT IMPEDENCE vs FREQUENCY 1K IN -30 -40 -50 10 -60 VN 1 100 1K 10K -70 100K 1M -80 1K 10M 10K FIGURE 9. VOLTAGE AND CURRENT NOISE vs FREQUENCY 480 460 AV = 2 420 AV = -1 380 360 10M 100M AV = 1 1 AV = -1 0.8 AV = 2 0.6 340 RL = 150Ω 1.2 PEAKING (dB) 440 400 1M FIGURE 10. POWER SUPPLY REJECTION RATIO vs FREQUENCY 1.4 RL = 150Ω 100K FREQUENCY (Hz) FREQUENCY (Hz) BANDWIDTH (MHz) 1M FREQUENCY (Hz) FREQUENCY (Hz) AV = 1 0.4 320 300 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 VS (V) FIGURE 11. BANDWIDTH vs SUPPLY VOLTAGE 6 0.2 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 VS (V) FIGURE 12. PEAKING vs SUPPLY VOLTAGE EL5108, EL5308 Typical Performance Curves 3.9 -40 VS=±5V AV=2 RL=150Ω VO=2VP-P -50 3.7 HD2 3.5 HD3 -60 IS (mA) DISTORTION (dB) (Continued) -70 IS+, IS- 3.3 3.1 2.9 -80 2.7 -90 0 10 20 30 40 50 60 2.5 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 VS (V) FREQUENCY (MHz) FIGURE 13. DISTORTION vs FREQUENCY FIGURE 14. SUPPLY CURRENT vs SUPPLY VOLTAGE VO=±2V VO=±200mV 1V/DIV 100mV/DIV 10ns/DIV 10ns/DIV FIGURE 15. LARGE SIGNAL RESPONSE FIGURE 16. SMALL SIGNAL RESPONSE M=100ns M=100ns CH1 2.00V/DIV CH1 2.00V/DIV CH2 1.00V/DIV FIGURE 17. DISABLED RESPONSE 7 CH2 1.00V/DIV FIGURE 18. ENABLED RESPONSE EL5108, EL5308 Typical Performance Curves (Continued) JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 1 909mW 0.9 SO16 (0.150”) θJA=110°C/W 0.8 POWER DISSIPATION (W) POWER DISSIPATION (W) JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 1.4 0.7 625mW 0.6 633mW SO8 θJA=160°C/W 0.5 0.4 391mW 0.3 SOT23-6 θJA=256°C/W 0.2 QSOP16 θJA=158°C/W 0.1 0 0 25 50 75 85 100 125 150 1.250W 1.2 SO16 (0.150”) θJA=80°C/W 1 909mW 0.8 893mW 0.6 435mW 0.4 SOT23-6 θJA=230°C/W 0.2 0.1 0 0 25 Applications Information Product Description The EL5108 and EL5308 are fixed gain amplifiers that offer a wide -3dB bandwidth of 450MHz and a low supply current of 3.5mA per amplifier. They work with supply voltages ranging from a single 5V to 10V and they are also capable of swinging to within 1.2V of either supply on the output. These combinations of high bandwidth, low power, and high slew rate make the EL5108 and EL5308 the ideal choice for many low-power/high-bandwidth applications such as portable, handheld, or battery-powered equipment. For varying bandwidth and higher gains, consider the EL5166 with 1GHz on a 9mA supply current or the EL5164 with 600MHz on a 3.5mA supply current. Versions include single, dual, and triple amp packages with 6-pin SOT-23, 16-pin QSOP, and 8-pin or 16-pin SO outlines. Power Supply Bypassing and Printed Circuit Board Layout As with any high frequency device, good printed circuit board layout is necessary for optimum performance. Low impedance ground plane construction is essential. Surface mount components are recommended, but if leaded components are used, lead lengths should be as short as possible. The power supply pins must be well bypassed to reduce the risk of oscillation. The combination of a 4.7µF tantalum capacitor in parallel with a 0.01µF capacitor has been shown to work well when placed at each supply pin. 50 QSOP16 θJA=112°C/W 75 85 100 150 FIGURE 20. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE Disable/Power-Down The EL5108 and EL5308 amplifiers can be disabled and placing their outputs in a high impedance state. When disabled, the amplifier supply current is reduced to <25µA. The EL5108 and EL5308 are disabled when the CE pin is pulled up to within 1V of the positive supply. Similarly, the amplifier is enabled by floating or pulling its CE pin to at least 3V below the positive supply. For ±5V supply, this means that the amplifier will be enabled when CE is 2V or less, and disabled when CE is above 4V. Although the logic levels are not standard TTL, this choice of logic voltages allow the EL5108 and EL5308 to be enabled by tying CE to ground, even in 5V single supply applications. The CE pins can be driven from CMOS outputs. Gain Setting The EL5108 and EL5308 are built with internal feedback and gain resistors. The internal feedback resistors have equal value; as a result, the amplifier can be configured into gain of +1, -1, and +2 without any external resistors. Figure 21 shows the amplifier in gain of +2 configuration. The gain error is ±2% maximum. Figure 22 shows the amplifier in gain of -1 configuration. For gain of +1, IN+ and IN- should be connected together as shown in Figure 23. This configuration avoids the effects of any parasitic capacitance on the IN- pin. Since the internal feedback and gain resistors change with temperature and process, external resistor should not be used to adjust the gain settings. 325Ω 325Ω ININ+ + FIGURE 21. AV = +2 8 125 AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) FIGURE 19. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE SO8 θJA=110°C/W EL5108, EL5308 Video Performance 325Ω For good video performance, an amplifier is required to maintain the same output impedance and the same frequency response as DC levels are changed at the output. This is especially difficult when driving a standard video load of 150Ω, because of the change in output current with DC level. Previously, good differential gain could only be achieved by running high idle currents through the output transistors (to reduce variations in output impedance). Special circuitry has been incorporated in the EL5108 and EL5308 to reduce the variation of output impedance with current output. This results in dG and dP specifications of 0.01% and 0.01°, while driving 150Ω at a gain of 2. 325Ω IN- + GND FIGURE 22. AV = -1 325Ω IN- 325Ω + IN+ FIGURE 23. AV = +1 Output Drive Capability Supply Voltage Range and Single-Supply Operation The EL5108 and EL5308 have been designed to operate with supply voltages having a span of greater than or equal to 5V and less than 12V. In practical terms, this means that they will operate on dual supplies ranging from ±2.5V to ±5V. With single-supply, they will operate from 5V to 10V. As supply voltages continue to decrease, it becomes necessary to provide input and output voltage ranges that can get as close as possible to the supply voltages. The EL5108 and EL5308 have an input range which extends to within 2V of either supply. So, for example, on ±5V supplies, the input range is about ±3V. The output range is also quite large, extending to within 1V of the supply rail. On a ±5V supply, the output is therefore capable of swinging from -4V to +4V. Single-supply output range is larger because of the increased negative swing due to the external pull-down resistor to ground. Figure 24 shows an AC-coupled, gain of +2, +5V single supply circuit configuration. In spite of its low 3.5mA of supply current per amplifier, the EL5108 and EL5308 are capable of providing a maximum of ±130mA of output current. Driving Cables and Capacitive Loads When used as a cable driver, double termination is always recommended for reflection-free performance. For those applications, the back-termination series resistor will decouple the EL5108 and EL5308 from the cable and allow extensive capacitive drive. However, other applications may have high capacitive loads without a back-termination resistor. In these applications, a small series resistor (usually between 5Ω and 50Ω) can be placed in series with the output to eliminate most peaking. Current Limiting The EL5108 and EL5308 have no internal current-limiting circuitry. If the output is shorted, it is possible to exceed the Absolute Maximum Rating for output current or power dissipation, potentially resulting in the destruction of the device. Power Dissipation 325Ω +5 4.7µF 325Ω + +5 0.1µF 1K 0.1µF VIN 1K VOUT With the high output drive capability of the EL5108 and EL5308, it is possible to exceed the 125°C Absolute Maximum junction temperature under certain very high load current conditions. Generally speaking when RL falls below about 25Ω, it is important to calculate the maximum junction temperature (TJMAX) for the application to determine if power supply voltages, load conditions, or package type need to be modified for the EL5108 and EL5308 to remain in the safe operating area. These parameters are calculated as follows: T JMAX = T MAX + ( θ JA × n × PD MAX ) FIGURE 24. 9 EL5108, EL5308 where: PDMAX for each amplifier can be calculated as follows: TMAX = Maximum ambient temperature θJA = Thermal resistance of the package n = Number of amplifiers in the package PDMAX = Maximum power dissipation of each amplifier in the package V OUTMAX PD MAX = ( 2 × V S × I SMAX ) + ( V S - V OUTMAX ) × ---------------------------R L where: VS = Supply voltage ISMAX = Maximum supply current of 1A VOUTMAX = Maximum output voltage (required) RL = Load resistance SO Package Outline Drawing 10 EL5108, EL5308 SOT-23 Package Outline Drawing 11 EL5108, EL5308 QSOP Package Outline Drawing NOTE: The package drawings shown here may not be the latest versions. To check the latest revision, please refer to the Intersil website at http://www.intersil.com/design/packages/index.asp 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