EL2227 ® Data Sheet April 26, 2005 Dual Very Low Noise Amplifier Features The EL2227 is a dual, low-noise amplifier, ideally suited to line receiving applications in ADSL and HDSLII designs. With low noise specification of just 1.9nV/√Hz and 1.2pA/√Hz, the EL2227 is perfect for the detection of very low amplitude signals. • Voltage noise of only 1.9nV/√Hz The EL2227 features a -3dB bandwidth of 115MHz and is gain-of-2 stable. The EL2227 also affords minimal power dissipation with a supply current of just 4.8mA per amplifier. The amplifier can be powered from supplies ranging from ±2.5V to ±12V. • Current noise of only 1.2pA/√Hz • Bandwidth (-3dB) of 115MHz @AV = +2 • Gain-of-2 stable • Just 4.8mA per amplifier • 8-pin MSOP package • ±2.5V to ±12V operation • Pb-Free available (RoHS compliant) The EL2227 is available in a space-saving 8-pin MSOP package as well as the industry-standard 8-pin SO. It can operate over the -40°C to +85°C temperature range. Applications Ordering Information • HDSLII receivers PACKAGE TAPE & REEL PKG. DWG.# EL2227CY 8-Pin MSOP - MDP0043 EL2227CY-T13 8-Pin MSOP 13” MDP0043 EL2227CY-T7 8-Pin MSOP 7” MDP0043 EL2227CYZ (See Note) 8-Pin MSOP (Pb-free) - MDP0043 EL2227CYZ-T13 (See Note) 8-Pin MSOP (Pb-free) 13” MDP0043 EL2227CYZ-T7 (See Note) 8-Pin MSOP (Pb-free) 7” MDP0043 EL2227CS 8-Pin SO - MDP0027 EL2227CS-T13 8-Pin SO 13” MDP0027 EL2227CS-T7 8-Pin SO 7” MDP0027 EL2227CSZ (See Note) 8-Pin SO (Pb-free) - MDP0027 EL2227CSZ-T13 (See Note) 8-Pin SO (Pb-free) 13” MDP0027 EL2227CSZ-T7 (See Note) 8-Pin SO (Pb-free) 7” MDP0027 PART NUMBER FN7058.2 • ADSL receivers • Ultrasound input amplifiers • Wideband instrumentation • Communications equipment • AGC & PLL active filters • Wideband sensors Pinout EL2227 (8-PIN SO, MSOP) TOP VIEW VOUTA 1 VINA- 2 - 8 VS+ 7 VOUTB 6 VINB- 5 VINB+ + VINA+ 3 + VS- 4 NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and 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-020. 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2004, 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. EL2227 Absolute Maximum Ratings (TA = 25°C) Supply Voltage between VS+ and VS-. . . . . . . . . . . . . . . . . . . . .28V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . VS- - 0.3V, VS +0.3V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 40mA Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves ESD Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV 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 VS+ = +12V, VS- = -12V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, and TA = 25°C unless otherwise specified. PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT -0.2 3 mV INPUT CHARACTERISTICS VOS Input Offset Voltage TCVOS Average Offset Voltage Drift IB Input Bias Current RIN VCM = 0V -0.6 µV/°C -3.4 µA Input Impedance 7.3 MΩ CIN Input Capacitance 1.6 pF CMIR Common-Mode Input Range CMRR Common-Mode Rejection Ratio for VIN from -11.8V to 10.4V 60 94 dB AVOL Open-Loop Gain -5V ≤ VOUT ≤ 5V 70 87 dB eN Voltage Noise f = 100kHz 1.9 nV/√Hz iN Current Noise f = 100kHz 1.2 pA/√Hz RL = 500Ω -10.4 -10 V RL = 250Ω -9.8 -9 V VCM = 0V -9 -11.8 +10.4 V OUTPUT CHARACTERISTICS VOL Output Swing Low VOH Output Swing High RL = 500Ω RL = 250Ω 9.5 10 V ISC Short Circuit Current RL = 10Ω 140 180 mA 65 95 dB 10 10.4 V POWER SUPPLY PERFORMANCE PSRR Power Supply Rejection Ratio VS is moved from ±2.25V to ±12V IS Supply Current (Per Amplifier) No Load VS Operating Range 4.8 ±2.5 6.5 mA ±12 V DYNAMIC PERFORMANCE SR Slew Rate (Note 2) ±2.5V square wave, measured 25%-75% 50 V/µS tS Settling to 0.1% (AV = +2) (AV = +2), VO = ±1V 65 ns BW -3dB Bandwidth RF = 358Ω 115 MHz HD2 2nd Harmonic Distortion f = 1MHz, VO = 2VP-P, RL = 500Ω, RF = 358Ω 93 dBc f = 1MHz, VO = 2VP-P, RL = 150Ω, RF = 358Ω 83 dBc f = 1MHz, VO = 2VP-P, RL = 500Ω, RF = 358Ω 94 dBc f = 1MHz, VO = 2VP-P, RL = 150Ω, RF = 358Ω 76 dBc HD3 3rd Harmonic Distortion 2 40 EL2227 Electrical Specifications VS+ = +12V, VS- = -12V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, and TA = 25°C unless otherwise specified. PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT 0.2 3 mV INPUT CHARACTERISTICS VOS Input Offset Voltage TCVOS Average Offset Voltage Drift IB Input Bias Current RIN VCM = 0V -0.6 µV/°C -3.7 µA Input Impedance 7.3 MΩ CIN Input Capacitance 1.6 pF CMIR Common-Mode Input Range CMRR Common-Mode Rejection Ratio for VIN from -4.8V to 3.4V 60 97 dB AVOL Open-Loop Gain -5V ≤ VOUT ≤ 5V 70 84 dB eN Voltage Noise f = 100kHz 1.9 nV/√Hz iN Current Noise f = 100kHz 1.2 pA/√Hz RL = 500Ω -3.8 -3.5 V RL = 250Ω -3.7 -3.5 V VCM = 0V -9 -4.8 3.4 V OUTPUT CHARACTERISTICS VOL VOH ISC Output Swing Low Output Swing High Short Circuit Current RL = 500Ω 3.5 3.7 V RL = 250Ω 3.5 3.6 V RL = 10Ω 60 100 mA 65 95 dB POWER SUPPLY PERFORMANCE PSRR Power Supply Rejection Ratio VS is moved from ±2.25V to ±12V IS Supply Current (Per Amplifier) No Load VS Operating Range 4.5 ±2.5 5.5 mA ±12 V DYNAMIC PERFORMANCE SR Slew Rate ±2.5V square wave, measured 25%-75% tS Settling to 0.1% (AV = +2) BW HD2 HD3 45 V/µS (AV = +2), VO = ±1V 77 ns -3dB Bandwidth RF = 358Ω 90 MHz 2nd Harmonic Distortion f = 1MHz, VO = 2VP-P, RL = 500Ω, RF = 358Ω 98 dBc f = 1MHz, VO = 2VP-P, RL = 150Ω, RF = 358Ω 90 dBc f = 1MHz, VO = 2VP-P, RL = 500Ω, RF = 358Ω 94 dBc f = 1MHz, VO = 2VP-P, RL = 150Ω, RF = 358Ω 79 dBc 3rd Harmonic Distortion 3 35 EL2227 Typical Performance Curves Inverting Frequency Response for Various RF 4 3 3 2 2 RF=1kΩ 1 RF=620Ω 0 -1 RF=100Ω -2 RF=350Ω -3 VS=±12V AV=+2 RL=500Ω -4 -5 Normalized Gain (dB) Normalized Gain (dB) Non-inverting Frequency Response for Various RF 4 RF=100Ω RF=350Ω 1 0 -1 RF=420Ω -2 RF=620Ω -3 -4 -5 -6 1M -6 1M 100M 200M 10M RF=1kΩ VS=±12V AV=-1 RL=500Ω Frequency (Hz) Inverting Frequency Response (Gain) 4 3 3 2 1 AV=2 0 AV=10 AV=5 -2 -3 -4 -5 -6 1M Normalized Gain (dB) Normalized Gain (dB) Non-inverting Frequency Response (Gain) 4 -1 VS=±12V RF=350Ω RL=500Ω 2 AV=-2 1 -1 AV=-10 -2 AV=-5 -3 -4 -5 10M -6 1M 100M 200M VS=±12V RF=420Ω RL=500Ω 10M Non-inverting Frequency Response (Phase) Inverting Frequency Response (Phase) 135 90 90 45 45 AV=5 -45 -90 AV=-1 0 AV=2 Phase (°) Phase (°) 0 AV=10 -135 -180 -45 AV=-10 AV=-5 -135 VS=±12V RF=420Ω RL=500Ω -225 VS=±12 RF=350Ω RL=500Ω -270 -270 -315 1M -315 1M 100M 200M 10M 100M 200M 10M Frequency (Hz) Frequency (Hz) Non-inverting Frequency Response for Various Input Signal Levels Inverting Frequency Response for Various Input Signal Levels 4 4 VS=±12V RF=350Ω AV=+2 RL=500Ω 3 VIN=100mVPP VIN=20mVPP 0 -1 VIN=500mVPP -2 VIN=1VPP -3 -4 VIN=2VPP -5 -6 100k 1M 2 10M 100M VIN=1.4VPP VIN=20mVPP 1 0 -1 VIN=2.8VPP -2 -3 -4 -5 Frequency (Hz) 4 Normalized Gain (dB) Normalized Gain (dB) AV=-2 -90 -180 -225 1 100M 200M Frequency (Hz) 135 2 AV=-1 0 Frequency (Hz) 3 100M 200M 10M Frequency (Hz) -6 1M VIN=280mVPP VS=±12V RF=420Ω RL=500Ω AV=-1 10M Frequency (Hz) 100M 200M EL2227 Typical Performance Curves (Continued) Non-inverting Frequency Response for Various CL Inverting Frequency Response for Various CL 5 4 CL=12pF 2 1 0 CL=2pF -1 -2 VVSS=±12 =±12V VRF=620Ω R =500Ω RFL=620 Ω AV=+2 -3 -4 -5 1M CL=30pF 3 CL=30pF 3 Normalized Gain (dB) Normalized Gain (dB) 4 2 CL=12pF 1 0 -1 CL=2pF -2 -3 VS=±12V RF=420Ω RL=500Ω AV=-1 -4 -5 -6 1M 100M 200M 10M Frequency (Hz) Non-inverting Frequency Response for Various RL Frequency Response for Various Output DC Levels 4 4 VO=+10V 3 RL=100Ω 2 RL=500Ω Normalized Gain (dB) Normalized Gain (dB) 3 1 0 RL=50Ω -1 -2 -3 VS=±12V RF=620Ω CL=15pF AV=+2 -4 -5 -6 1M VO=-10V 2 0 -1 VO=0V -2 -3 -6 100k 100M 200M VO=-5V VS=±12V RF=620Ω RL=500Ω AV=+2 -4 -5 10M VO=+5V 1 1M Frequency (Hz) 100M 10M Frequency (Hz) 3dB Bandwidth vs Supply Voltage Peaking vs Supply Voltage 140 4 AV=+2 RF=620Ω RL=500Ω 120 AV=-1 3 100 AV=+2 80 AV=-2 60 40 A =+5 V AV=+2 RF=620Ω RL=500Ω AV=+2 3.5 Peaking (dB) 3dB Bandwidth (MHz) 100M 200M 10M Frequency (Hz) AV=-5 AV=+10 2.5 AV=-1 2 AV=+1 AV=-10 1.5 1 20 AV=+5 0.5 AV=-10 0 2 4 6 8 10 AV=-2 AV=-5 0 12 2 Supply Voltage (±V) 4 6 8 Large Signal Step Response VS=±12V Large Signal Step Response VS=±2.5V RF=620Ω AV=2 RL=500Ω 0.5V/div RF=620Ω AV=2 RL=500Ω 0.5V/div 100ns/div 5 10 Supply Voltage (±V) 100ns/div 12 EL2227 Typical Performance Curves (Continued) Small Signal Step Response VS=±12V Small Signal Step Response VS=±2.5V RF=620Ω AV=2 RL=500Ω RF=620Ω AV=2 RL=500Ω 20mV/div 20mV/div 100ns/div 100ns/div Group Delay vs Frequency Differential Gain/Phase vs DC Input Voltage at 3.58MHz 10 0.1 8 4 2 dG (%) or dP (°) Group Delay (ns) 0.08 AV=5V 6 AV=2V 0 -2 -4 VS=±12V RF=620Ω RL=500Ω PIN=-20dBm into 50Ω -6 -8 -10 1M 0.04 AV=2 RF=620Ω RL=150Ω fO=3.58MHz dP 0.02 0 -0.02 -1 100M 10M 0.06 dG 0.5 1 DC Input Voltage (V) Supply Current vs Supply Voltage Closed Loop Output Impedance vs Frequency 12 100 1.2/div Output Impedance (Ω) Supply Current (mA) 0 -0.5 Frequency (Hz) 6 10 1 0.1 1.2/div 0 0 6 0.01 10k 12 100k Supply Voltage (±V) 100M PSRR 0 90 20 PSRR (dB) -CMRR (dB) CMRR 110 70 50 40 VS- 60 VS+ 30 10 10 10M 1M Frequency (Hz) 80 VS=±12 100 1k 10k 100k Frequency (Hz) 6 1M 10M 100M 100 1k 10k 100k 1M Frequency (Hz) 10M 100M EL2227 Typical Performance Curves 1MHz 2nd and 3rd Harmonic Distortion vs Output Swing for VS=±12V -40 1MHz 2nd and 3rd Harmonic Distortion vs Output Swing for VS=±2.5V -50 AV=2 RF=620Ω RL=500Ω -50 AV=2 RF=358Ω RL=500Ω -60 2nd H -60 Distortion (dBc) Distortion (dBc) (Continued) -70 3rd H -80 -70 2nd H -80 3rd H -90 -90 -100 -100 4 0 12 8 16 20 0 0.5 Output Swing (VPP) Total Harmonic Distortion vs Frequency @ 2VPP VS=±12V -60 1 2 1.5 2.5 Output Swing (VPP) Total Harmonic Distortion vs Frequency @ 2VPP VS=±2.5V -60 -70 -70 RL=50 RL=50 -80 THD (dBc) THD (dBc) -80 -90 -100 -90 RL=500 -100 RL=500 -110 -110 -120 -120 1 10 100 1 1000 10 Voltage and Current Noise vs Frequency 1000 Channel to Channel Isolation vs Frequency 10 0 9 -20 8 7 A→B IN Gain (dB) Voltage Noise (nV/√Hz), Current Noise (pA/√Hz) 100 Frequency (kHz) Frequency (kHz) 6 5 -40 B→A -60 4 3 -80 EN 2 1 10 100 1k 10k -100 100k 100k 10M 1M Frequency (Hz) 100M Frequency (Hz) -3dB Bandwidth vs Temperature Supply Current vs Temperature 150 10 130 9.5 IS (mA) -3dB Bandwidth (MHz) 140 120 110 9 100 90 80 -40 -20 0 20 40 60 80 100 120 140 Die Temperature (°C) 7 8.5 -50 0 50 Die Temperature (°C) 100 150 EL2227 Typical Performance Curves (Continued) VOS vs Temperature Input Bias Current vs Temperature 2 -2 -3 VOS (mV) IBIAS (µA) 0 -4 -2 -5 -4 -50 0 50 100 -6 -50 150 0 Die Temperature (°C) Slew Rate vs Temperature 100 150 Settling Time vs Accuracy 55 160 140 VS=±2.5V VO=2VPP Settling Time (ns) 53 51 49 47 120 VS=±12V VO=5VPP 100 80 60 VS=±12V VO=2VPP 40 20 45 -50 0 50 100 0 0.01 150 0.1 Die Temperature (°C) 0.9 Accuracy (%) Package Power Dissipation vs Ambient Temp. JEDEC JESD51-3 Low Effective Thermal Conductivity Test Board 781mW 0.8 Power Dissipation (W) Slew Rate (V/µs) 50 Die Temperature (°C) 0.7 θ JA = 607mW 0.6 0.5 θJ 0.4 0.3 MS SO 8 16 0° C/ W OP 8 06 °C /W A =2 0.2 0.1 0 0 25 50 75 85 100 Ambient Temperature (°C) 8 125 150 1 EL2227 Pin Descriptions EL2227CY 8-PIN MSOP EL2227CS 8-PIN SO PIN NAME PIN FUNCTION 1 1 VOUTA Output EQUIVALENT CIRCUIT VS+ VOUT Circuit 1 2 2 VINA- Input VS+ VIN+ VIN- VS- Circuit 2 3 3 VINA+ Input 4 4 VS- Supply 5 5 VINB+ Input 6 6 VINB- Input Reference Circuit 2 7 7 VOUTB Output Reference Circuit 1 8 8 VS+ Supply 9 Reference Circuit 2 EL2227 Applications Information When disabled, both the positive and negative supply voltages are disconnected (see Figure 2 below.) Product Description +12V The EL2227 is a dual voltage feedback operational amplifier designed especially for DMT ADSL and other applications requiring very low voltage and current noise. It also features low distortion while drawing moderately low supply current and is built on Elantec's proprietary high-speed complementary bipolar process. The EL2227 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 EL2227 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. 1k 1µF 10k 10k 1k + - 1µF 4.7µF 1k 75k FIGURE 2. ADSL CPE Applications Power Dissipation The low noise EL2227 amplifier is specifically designed for the dual differential receiver amplifier function with ADSL transceiver hybrids as well as other low-noise amplifier applications. A typical ADSL CPE line interface circuit is shown in Figure 1. The EL2227 is used in receiving DMT down stream signal. With careful transceiver hybrid design and the EL2227 1.9nV/√Hz voltage noise and 1.2pA/√Hz current noise performance, -140dBm/Hz system background noise performance can be easily achieved. With the wide power supply range and large output drive capability of the EL2227, 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 EL2227 to remain in the safe operating area. These parameters are related as follows: Driver Input + - ROUT T JMAX = T MAX + ( θ JA × PD MAXTOTAL ) Line + RF where: RG ZLINE PDMAXTOTAL is the sum of the maximum power dissipation of each amplifier in the package (PDMAX) RF ROUT + Line RF Receive Out + Receive Amplifie Receive Out - + + RF R RIN PDMAX for each amplifier can be calculated as follows: V OUTMAX PD MAX = 2 × V S × I SMAX + ( V S – V OUTMAX ) × ---------------------------R L R where: RIN TMAX = Maximum Ambient Temperature FIGURE 1. TYPICAL LINE INTERFACE CONNECTION θJA = Thermal Resistance of the Package Disable Function PDMAX = Maximum Power Dissipation of 1 Amplifier The EL2227 is in the standard dual amplifier package without the enable/disable function. A simple way to implement the enable/disable function is depicted below. VS = Supply Voltage IMAX = Maximum Supply Current of 1 Amplifier VOUTMAX = Maximum Output Voltage Swing of the Application RL = Load Resistance To serve as a guide for the user, we can calculate maximum allowable supply voltages for the example of the video cable-driver below since we know that TJMAX = 150°C, TMAX = 75°C, ISMAX = 9.5mA, and the package θJAs are shown in Table 1. If we assume (for this example) that we 10 EL2227 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. ΘJA MAX PDISS @ TMAX PART PACKAGE EL2227CS SO8 160°C/W 0.406W @ 85°C EL2227CY MSOP8 206°C/W 0.315W @ 85°C MAX VS Single-Supply Operation The EL2227 have been designed to have a wide input and output voltage range. This design also makes the EL2227 an excellent choice for single-supply operation. Using a single positive supply, the lower input voltage range is within 200mV of ground (RL = 500Ω), and the lower output voltage range is within 875mV of ground. Upper input voltage range reaches 3.6V, and output voltage range reaches 3.8V with a 5V supply and RL = 500Ω. This results in a 2.625V output swing on a single 5V supply. This wide output voltage range also allows single-supply operation with a supply voltage as high as 28V. Printed-Circuit Layout The EL2227 are well behaved, and easy to apply in most applications. However, a few simple 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. Gain-Bandwidth Product and the -3dB Bandwidth The EL2227 have a gain-bandwidth product of 137MHz while using only 5mA of supply current per amplifier. For gains greater than 2, 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 2, higherorder poles in the amplifiers' transfer function contribute to even higher closed loop bandwidths. For example, the EL2227 have a -3dB bandwidth of 115MHz at a gain of +2, dropping to 28MHz at a gain of +5. It is important to note that the EL2227 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 EL2227 in a gain of +2 only exhibit 0.5dB of peaking with a 1000Ω load. Output Drive Capability The EL2227 have been designed to drive low impedance loads. They can easily drive 6VPP into a 500Ω load. This high output drive capability makes the EL2227 an ideal choice for RF, IF and video applications. 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 11