HA-2841 Data Sheet September 1998 File Number 2843.3 50MHz, Fast Settling, Unity Gain Stable, Video Operational Amplifier Features The HA-2841 is a wideband, unity gain stable, operational amplifier featuring a 50MHz unity gain bandwidth, and excellent DC specifications. This amplifier's performance is further enhanced through stable operation down to closed loop gains of +1, the inclusion of offset null controls, and by its excellent video performance. * Low AC Variability Over Process and Temperature * Low Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . 10mA * Unity Gain Bandwidth. . . . . . . . . . . . . . . . . . . . . . . 50MHz * Gain Flatness to 10MHz. . . . . . . . . . . . . . . . . . . . . 0.05dB * High Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . 240V/s * Low Offset Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mV The capabilities of the HA-2841 are ideally suited for high speed pulse and video amplifier circuits, where high slew rates and wide bandwidth are required. Gain flatness of 0.05dB, combined with differential gain and phase specifications of 0.03%, and 0.03 degrees, respectively, make the HA-2841 ideal for component and composite video applications. A zener/nichrome based reference circuit, coupled with advanced laser trimming techniques, yields a supply current with a low temperature coefficient and low lot-to-lot variability. Tighter ICC control translates to more consistent AC parameters ensuring that units from each lot perform the same way, and easing the task of designing systems for wide temperature ranges. Critical AC parameters, Slew Rate and Bandwidth, each vary by less than 5% over the industrial temperature range (see characteristic curves). For military grade product, refer to the HA-2841/883 data sheet. Intersil AnswerFAX (321 724-7800), document number 3621. Pinout * Fast Settling Time (0.1%) . . . . . . . . . . . . . . . . . . . . . . 90ns * Differential Gain/Phase. . . . . . . . . . . 0.03%/0.03 Degrees * Enhanced Replacement for AD841 and EL2041 Applications * Pulse and Video Amplifiers * Wideband Amplifiers * High Speed Sample-Hold Circuits * Fast, Precise D/A Converters * High Speed A/D Input Buffer Ordering Information PART NUMBER (BRAND) TEMP. RANGE (oC) PACKAGE PKG. NO. HA3-2841-5 0 to 75 8 Ld PDIP E8.3 HA9P2841-5 (H28415) 0 to 75 8 Ld SOIC M8.15 HA-2841 (PDIP, SOIC) TOP VIEW BAL 1 -IN 2 +IN 3 V- 4 + 1 8 BAL 7 V+ 6 OUT 5 NC CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Copyright (c) Intersil Corporation 1999 HA-2841 Absolute Maximum Ratings Thermal Information Voltage Between V+ and V- Terminals. . . . . . . . . . . . . . . . . . . . 35V Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Output Current (Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA 10mA (50% Duty Cycle) Thermal Resistance (Typical, Note 2) JA (oC/W) 8 Lead PDIP Package . . . . . . . . . . . . . . . . . . . . . . . 92 8 Lead SOIC Package . . . . . . . . . . . . . . . . . . . . . . . 157 Maximum Junction Temperature (Die, Note 1) . . . . . . . . . . . . . .175oC Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only) Operating Conditions Temperature Range HA-2841-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC Recommended Supply Voltage Range . . . . . . . . . . . 6.5V to 15V 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. NOTES: 1. Maximum power dissipation, including output load, must be designed to maintain the maximum junction temperature below 150oC for plastic packages. 2. JA is measured with the component mounted on an evaluation PC board in free air. 3. VO = 10V, RL unconnected. Output duty cycle must be reduced if IOUT >10mA. VSUPPLY = 15V, RL = 1k, CL 10pF, Unless Otherwise Specified Electrical Specifications PARAMETER TEST CONDITIONS HA-2841-5 TEMP. (oC) MIN TYP MAX UNITS INPUT CHARACTERISTICS Offset Voltage (Note 10) 25 - 1 3 mV Full - - 6 mV Average Offset Voltage Drift Full - 14 - V/oC Bias Current (Note 10) 25 - 5 10 A Full - 8 15 A Full - 45 - nA/oC 25 - 0.5 1.0 A Full - - 1.5 A Average Bias Current Drift Offset Current Input Resistance 25 - 170 - k Input Capacitance 25 - 1 - pF Full 10 - - V Input Noise Voltage 10Hz to 1MHz 25 - 16 - VRMS Input Noise Voltage (Note 10) f = 1kHz, RSOURCE = 0 25 - 16 - nV Hz Input Noise Current (Note 10) f = 1kHz, RSOURCE = 10k 25 - 2 - pA Hz Large Signal Voltage Gain VO = 10V 25 25 50 - kV/V Full 10 30 - kV/V Common-Mode Rejection Ratio (Note 10) VCM = 10V Full 80 95 - dB Minimum Stable Gain 25 1 - - V/V Gain Bandwidth Product (Notes 5, 10) 25 - 50 - MHz Common Mode Range TRANSFER CHARACTERISTICS Gain Flatness to 5MHz (Note 10) RL 75 25 - 0.015 - dB Gain Flatness to 10MHz (Note 10) RL 500 25 - 0.05 - dB Full 10 10.5 - V Full 15 30 - mA 25 - 8.5 - OUTPUT CHARACTERISTICS Output Voltage Swing (Note 10) Output Current (Note 10) Note 3 Output Resistance Full Power Bandwidth (Note 6) VO = 10V 25 3.2 3.8 - MHz Differential Gain (Note 10) Note 4 25 - 0.03 - % 2 HA-2841 VSUPPLY = 15V, RL = 1k, CL 10pF, Unless Otherwise Specified (Continued) Electrical Specifications TEMP. (oC) HA-2841-5 MIN TYP MAX UNITS Differential Phase (Note 10) Note 4 25 - 0.03 - Degrees Harmonic Distortion (Note 10) VO = 2VP-P, f = 1MHz, AV = +1 25 - >83 - dBc Rise Time 25 - 3 - ns Overshoot 25 - 33 - % PARAMETER TEST CONDITIONS TRANSIENT RESPONSE (Note 7) Slew Rate (Notes 9, 10) AV = +1 25 200 240 - V/s Settling Time 10V Step to 0.1% 25 - 90 - ns 25 - 10 - mA Full - 10 11 mA Full 70 80 - dB POWER REQUIREMENTS Supply Current (Note 10) Power Supply Rejection Ratio (Note 10) Note 8 NOTES: 4. Differential gain and phase are measured with a VM700A video tester, using a NTC-7 composite VITS. RF = R1 = 1k, RL = 700. 5. AVCL = 1000, Measured at unity gain crossing. Slew Rate 6. Full Power Bandwidth guaranteed based on slew rate measurement using FPBW = --------------------------- ( V . PEAK = 10V ) 2V PEAK 7. Refer to Test Circuit section of data sheet. 8. VSUPPLY = 10V to 20V. 9. This parameter is not tested. The limits are guaranteed based on lab characterization, and reflect lot-to-lot variation. 10. See "Typical Performance Curves" for more information. Test Circuits and Waveforms IN + NOTES: OUT - 11. VS = 15V. 1k 12. AV = +1. 13. CL < 10pF. TEST CIRCUIT INPUT INPUT OUTPUT OUTPUT Input = 5V/Div. Output = 5V/Div. 50ns/Div. LARGE SIGNAL RESPONSE 3 Input = 100mV/Div. Output = 100mV/Div. 50ns/Div. SMALL SIGNAL RESPONSE HA-2841 Test Circuits and Waveforms 5k (Continued) SETTLING POINT 5k 2k 2k V+ - VIN VOUT + NOTES: 14. 15. 16. 17. 18. V+ V- AV = -1. Load Capacitance should be less than 10pF. Feedback and summing resistors must be matched to 0.1%. Tektronix P6201 FET probe used at settling point. HP5082-2810 clipping diodes recommended. SETTLING TIME TEST CIRCUIT Typical Applications 5k + BAL OUT V- SUGGESTED OFFSET VOLTAGE ADJUSTMENT (Also see Application Note AN550) Application 1 - High Power Amplifiers and Buffers High power amplifiers and buffers are in use in a wide variety of applications. Many times the "high power" capability is needed to drive large capacitive loads as well as low value resistive loads. In both cases the final driver stage is usually a power transistor of some type, but because of their inherently low gain, several stages of pre-drivers are often required. The HA-2841, with its 15mA output rating, is powerful enough to drive a power transistor without additional stages of current amplification. This capability is well demonstrated with the high power buffer circuit in Figure 1. The HA-2841 acts as the pre-driver to the output power transistor. Together, they form a unity gain buffer with the ability to drive three 50 coaxial cables in parallel, each with a capacitance of 2000pF. The total combined load is 16.6 and 6000pF capacitance. ordinary amplifier applications since video signals contain precise DC levels which must be retained. The addition of a clamping circuit restores DC levels at the output of an amplifier stage. The circuit shown in Figure 2 utilizes the HA-5320 sample and hold amplifier as the DC clamp. Also shown is a 3.57MHz trap in series, which will block the color burst portion of the video signal and allow the DC level to be amplified and restored. 1k HA-5320 1k HA-2841 3.57MHz TRAP 1k 1k 1k 532pF 50 75 + R1 R2 HA-2841 D3 - 2N5886 1K R3 D1 FIGURE 2. VIDEO DC RESTORER HP2835 100 HP2835 Prototyping Guidelines D2 LOAD 16.6; 6000pF OR 12.5; 6000pF FIGURE 1. DRIVING POWER TRANSISTORS TO GAIN ADDITIONAL CURRENT BOOSTING For best overall performance in any application, it is recommended that high frequency layout techniques be used. This should include: 1. Mounting the device through a ground plane. 2. Connecting unused pins (NC) to the ground plane. Application 2 - Video One of the primary uses of the HA-2841 is in the area of video applications. These applications include signal construction, synchronization addition and removal, as well as signal modification. A wide bandwidth device such as the HA-2841 is well suited for use in this class of amplifier. This, however, is a more involved group of applications than 4 3. Mounting feedback components on Teflon standoffs and/or locating these components as close to the device as possible. 4. Placing power supply decoupling capacitors from device supply pins to ground. HA-2841 Typical Performance Curves TA = 25oC, VSUPPLY = 15V, RL = 1k, CL < 10pF, Unless Otherwise Specified 60 40 AVCL = 1000 AVCL = 100 AVCL = 10 20 0 AVCL = 1 0 90 AVCL = 1000 OPEN LOOP AVCL = 100 AVCL = 10 AVCL =1 180 GAIN BANDWIDTH PRODUCT (MHz) 60 OPEN LOOP 80 PHASE (DEGREE) GAIN (dB) 100 55 50 45 40 35 30 1K 10K 100K 1M FREQUENCY (Hz) 10M 6 100M 500M 9 10 11 12 13 14 15 FIGURE 4. GAIN BANDWIDTH PRODUCT vs SUPPLY VOLTAGE 65 100 60 90 55 80 CMRR (dB) GAIN BANDWIDTH PRODUCT (MHz) 8 SUPPLY VOLTAGE (V) FIGURE 3. FREQUENCY RESPONSE FOR VARIOUS GAINS 50 45 40 70 60 50 35 30 -60 7 40 -40 -20 0 20 40 60 80 100 120 30 100 140 1K TEMPERATURE (oC) 10K 100K 1M 10M FREQUENCY (Hz) FIGURE 5. GAIN BANDWIDTH PRODUCT vs TEMPERATURE 90 FIGURE 6. CMRR vs FREQUENCY 40 120 80 NOISE VOLTAGE (nV/Hz) PSRR PSRR (dB) 70 60 50 40 30 90 20 60 NOISE VOLTAGE 30 NOISE CURRENT 10 30 20 100 0 0 1K 10K 100K FREQUENCY (Hz) FIGURE 7. PSRR vs FREQUENCY 5 1M 10M 10 100 1K 10K FREQUENCY (Hz) FIGURE 8. INPUT NOISE vs FREQUENCY 100K NOISE CURRENT (pA/Hz) 100 HA-2841 Typical Performance Curves TA = 25oC, VSUPPLY = 15V, RL = 1k, CL < 10pF, Unless Otherwise Specified (Continued) 290 290 280 270 NEGATIVE SLEW RATE 260 POSITIVE SLEW RATE 280 SLEW RATE (V/s) SLEW RATE (V/s) POSITIVE SLEW RATE 270 NEGATIVE SLEW RATE 260 250 250 240 -60 -40 -20 0 20 40 60 80 100 120 7 140 8 9 10 TEMPERATURE (oC) 11 12 13 14 15 SUPPLY VOLTAGE (V) FIGURE 9. SLEW RATE vs TEMPERATURE FIGURE 10. SLEW RATE vs SUPPLY VOLTAGE 9.0 1.5 1.0 OFFSET VOLTAGE 7.0 0.5 6.0 0.0 -0.5 5.0 BIAS CURRENT 4.0 3.0 -60 -1.0 SUPPLY CURRENT (mA) 8.0 INPUT OFFSET VOLTAGE (mV) INPUT BIAS CURRENT (A) 12 -20 0 20 40 60 80 100 120 8 125oC 6 -55oC 4 25C 2 -1.5 -40 10 5 140 6 7 8 TEMPERATURE (oC) FIGURE 11. INPUT OFFSET VOLTAGE AND INPUT BIAS CURRENT vs TEMPERATURE 10 15V, 75 7.5 8V, 1k 5 2.5 0 -60 8V, 75 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (oC) FIGURE 13. POSITIVE OUTPUT SWING vs TEMPERATURE 6 11 12 13 14 15 0 15V, 1k 15V, 150 8V, 150 10 FIGURE 12. SUPPLY CURRENT vs SUPPLY VOLTAGE NEGATIVE OUTPUT SWING (V) POSITIVE OUTPUT SWING (V) 12.5 9 SUPPLY VOLTAGE (V) -2.5 8V, 150 15V, 75 8V, 75 -5 8V, 1k -7.5 15V, 150 -10 -12.5 -60 15V, 1k -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (oC) FIGURE 14. NEGATIVE OUTPUT SWING vs TEMPERATURE HA-2841 Typical Performance Curves TA = 25oC, VSUPPLY = 15V, RL = 1k, CL < 10pF, Unless Otherwise Specified (Continued) VSUPPLY = 15V 25 VO = 10VP-P -30 20 -40 THD (dBc) OUTPUT VOLTAGE SWING (VP-P) -20 15 VSUPPLY = 8V 10 -50 VO = 1VP-P VO = 2VP-P -60 5 -70 0 -80 VO = 0.5VP-P 1K 10K 100K 1M 10M -90 100K 100M 1M FIGURE 15. MAXIMUM UNDISTORTED OUTPUT SWING vs FREQUENCY FIGURE 16. TOTAL HARMONIC DISTORTION vs FREQUENCY 0.16 VO = 5VP-P 0.14 -30 DIFFERENTIAL GAIN (%) THIRD INTERMOD PRODUCT (dBc) -20 -40 VO = 2VP-P VO = 1VP-P -50 VO = 0.5VP-P -60 -70 0.12 0.10 VSUPPLY = 8V VSUPPLY = 10V 0.08 VSUPPLY = 15V 0.06 0.04 -80 VO = 0.25VP-P -90 500K 1M 0.02 100 10M 200 300 FREQUENCY (Hz) 500 600 700 800 900 1000 FIGURE 18. DIFFERENTIAL GAIN vs LOAD RESISTANCE 0.08 0.22 400 LOAD RESISTANCE () FIGURE 17. INTERMODULATION DISTORTION vs FREQUENCY (TWO TONE) VSUPPLY = 8V AVCL = 1 RL = 75 0.07 0.20 GAIN FLATNESS (dB) DIFFERENTIAL PHASE (DEGREES) 10M FREQUENCY (Hz) FREQUENCY (Hz) 0.18 0.16 0.14 0.12 0.10 0.08 VSUPPLY = 10V 0.06 V SUPPLY = 15V 0.04 0.06 RL = 150 0.05 RL = 500 0.04 0.03 0.02 RL = 1000 0.01 0.02 0.00 0 100 200 300 400 500 600 700 800 900 1000 LOAD RESISTANCE () FIGURE 19. DIFFERENTIAL PHASE vs LOAD RESISTANCE 7 0 1M 2M 3M 4M 5M 6M 7M 8M 9M FREQUENCY (Hz) FIGURE 20. GAIN FLATNESS vs FREQUENCY 10M HA-2841 Die Characteristics DIE DIMENSIONS: SUBSTRATE POTENTIAL (Powered Up): 77 mils x 81 mils x 19 mils 1960m x 2060m x 483m VTRANSISTOR COUNT: METALLIZATION: 43 Type: Aluminum, 1% Copper Thickness: 16kA 2kA PROCESS: High Frequency Bipolar Dielectric Isolation PASSIVATION: Type: Nitride over Silox Silox Thickness: 12kA 2kA Nitride thickness: 3.5kA 1kA Metallization Mask Layout HA-2841 BAL BAL -IN V+ OUT +IN V- All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design 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 web site http://www.intersil.com 8