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| FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers December 2006 FHP3350,FHP3450 Triple and Quad Voltage Feedback Amplifiers Features 0.1dB gain flatness to 30MHz 0.07%/0.03 differential gain/phase error 210MHz full power -3dB bandwidth at G = 2 1,100V/s slew rate 55mA output current (drives dual video load) 83mA output short-circuit current Output swings to within 1.3V of either rail 3.6mA supply current per amplifier Minimum stable gain of 3dB or 1.5V/V FHP3350 - improved replacement for RC6333 FHP3450 - improved replacement for RC6334 Fully specified at +5V, and 5V supplies Description The FHP3350 and FHP3450 are low-cost, high-performance, voltage-feedback amplifiers designed for video applications. These triple and quad amplifiers consume only 3.6mA of supply current per channel and are capable of driving dual (75) video loads while providing 0.1dB of gain flatness to 30MHz. Consumer video applications also benefit from the low 0.07% differential gain and 0.03 differential phase errors. The FHP3350 offers three outputs that can be put into a high-impedance disable state to allow for video multiplexing or minimize power consumption. These amplifiers are designed to operate from 5V (2.5V) to 12V (6V) supplies. The outputs swing to within 1.3V of either supply rail to accommodate video signals on a single 5V supply. The FHP3350 and FHP3450 are designed on a complementary bipolar process. They provide 210MHz of full-power bandwidth and 1,100V/s of slew rate at a supply voltage of 5V. The combination of high performance, low power, and excellent video performance make these amplifiers well suited for use in many digital consumer video appliances as well as many generalpurpose, high-speed applications. Applications Video driver RGB driver ADC buffer S-video amp Active filters Typical Application - Driving Dual Video Loads +Vs 75 Cable 75 Rf Rg 75 75 +IN 75 Cable OUT 75 75 Cable OUT 75 -Vs OrderingInformation PartNumber FHP3350IMTC14X FHP3350IM14X FHP3450IMTC14X FHP3450IM14X Moisture sensitivity level for all parts is MSL-1. Package TSSOP-14 SOIC-14 TSSOP-14 SOIC-14 LeadFree Yes Yes Yes Yes OperatingTemp Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C Packaging Method Reel Reel Reel Reel FHP3350, FHP3450 Rev. 1.0.3 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers FHP3350 Pin Configurations NC or DISABLE1 NC or DISABLE2 NC or DISABLE3 +Vs +IN1 -IN1 OUT1 1 2 3 4 14 13 12 FHP3350 Pin Assignments Pin# 1 OUT2 -IN2 +IN2 -Vs +IN3 -IN3 OUT3 Pin NC or DISABLE1 Description Channel 1 ENABLED if pin is left open or pulled above VON, DISABLED if pin is grounded or pulled below VOFF Channel 2 ENABLED if pin is left open or pulled above VON, DISABLED if pin is grounded or pulled below VOFF Channel 3 ENABLED if pin is left open or pulled above VON, DISABLED if pin is grounded or pulled below VOFF Positive supply Positive Input, channel 1 Negative Input, channel 1 Output, channel 1 Output, channel 3 Negative Input, channel 3 Positive Input, channel 3 Negative supply Positive Input, channel 2 Negative Input, channel 2 Output, channel 2 FHP3350 TSSOP-14 2 NC or DISABLE2 11 10 9 8 5 6 7 3 NC or DISABLE3 4 5 6 7 8 9 10 11 12 13 14 +Vs +IN1 -IN1 OUT1 OUT3 -IN3 +IN3 -Vs +IN2 -IN2 OUT2 FHP3450 Pin Configurations OUT1 -IN1 +IN1 +Vs +IN2 -IN2 OUT2 1 2 3 4 14 13 12 FHP3450 Pin Assignments Pin# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 OUT4 -IN4 +IN4 -Vs +IN3 -IN3 OUT3 Pin OUT1 -IN1 +IN1 +Vs +IN2 -IN2 OUT2 OUT3 -IN3 +IN3 -Vs +IN4 -IN4 OUT4 Description Output, channel 1 Negative Input, channel 1 Positive Input, channel 1 Positive supply Positive Input, channel 2 Negative Input, channel 2 Output, channel 2 Output, channel 3 Negative Input, channel 3 Positive Input, channel 3 Negative supply Positive Input, channel 4 Negative Input, channel 4 Output, channel 4 FHP3450 TSSOP-14 11 10 9 8 5 6 7 FHP3350, FHP3450 Rev. 1.0.3 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Absolute Maximum Ratings The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table defines the conditions for actual device operation. Parameter Supply Voltage Input Voltage Range Min. 0 -Vs - 0.5V Max. 12.6 +Vs +0.5V Unit V V ReliabilityInformation Parameter Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10s) 14-Lead TSSOP1 14-Lead SOIC1 Note: 1. Package thermal resistance (JA), JDEC standard, multi-layer test boards, still air. Assumed power is concentrated in one channel, JA is lower if power is distributed in all channels. Min. -65 Typ. Max. 150 150 300 Unit C C C C/W C/W 160 148 ESDProtection ESDProtection Package Human Body Model (HBM) Charged Device Model (CDM) Machine Model (MM) FHP3350 SOIC 2kV 2kV 250V TSSOP 2kV 2kV 250V FHP3450 SOIC 2kV 2kV TBD TSSOP 2kV 1.5kV TBD Recommended Operating Conditions Parameter Operating Temperature Range Supply Voltage Range Min. -40 3 Typ. Max. +85 12 Unit C V FHP3350, FHP3450 Rev. 1.0.3 3 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Electrical Characteristics at +5V TA = 25C, VS = 5V, Rf = 249, RL = 150 to VS/2, G = 2; unless otherwise noted. Symbol BWss BWLs BW0.1dB tR, tF tS OS SR HD2 HD3 THD DG DP en in XTALK VIO dVIO Ibn dIbn IIO PSRR AOL IS ISD OFFISO OFFCOUT CHISO TON TOFF VOFF VON Parameter -3dB Bandwidth Full-Power Bandwidth 0.1dB Gain Flatness - Large Signal Rise and Fall Time Settling Time to 0.1% Overshoot Slew Rate 2nd Harmonic Distortion 3rd Harmonic Distortion Total Harmonic Distortion Differential Gain Differenital Phase Input Voltage Noise Input Current Noise Crosstalk Input Offset Voltage Average Drift Input Bias Current Average Drift Input Offset Current Power Supply Rejection Ratio Open Loop Gain Supply Current per Amplifier Disable Supply Current per Amp Off Isolation Off Output Capacitance Channel-to-Channel Isolation Turn-On Time Turn-Off Time Power Down Input Voltage Enable Input Voltage 5MHz DC DC Conditions No Peaking, G = +2, VOUT = 0.2Vpp No Peaking, G = +2, VOUT = 2Vpp G = +2, VOUT = 2Vpp VOUT = 0.2V step VOUT = 2V step VOUT = 0.2V step 2V step. G = -1 VOUT = 2Vpp, 5MHz VOUT = 2Vpp, 5MHz VOUT = 2Vpp, 5MHz NTSC (3.58MHz); AC coupled NTSC (3.58MHz); AC coupled > 100kHz > 100kHz at 5MHz Min. Typ. 190 190 35 2.0 20 2.5 800 -70 -80 -69 0.08 0.02 8.5 1 -70 1 10 50 0.33 50 75 55 3.0 35 -60 3 -85 300 80 Max. Units MHz MHz MHz ns ns % V/s dBc dBc dB % nV/Hz pA/Hz dB mV V/C nA nA/C nA dB dB mA A dB pF dB ns ns Frequency Domain Response Time Domain Response Distortion/Noise Response DCPerformance Disable Mode 5MHz Disable Characteristics DISABLE pins; disabled if pin is grounded or pulled below VOFF DISABLE pins; enabled if pin is left open or pulled above VON +Vs - 1.9 +Vs - 3.1 V V FHP3350, FHP3450 Rev. 1.0.3 4 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Electrical Characteristics at +5V (Continued) TA = 25C, VS = 5V, Rf = 249, RL = 150 to VS/2, G = 2; unless otherwise noted. Symbol Input Characteristics RIN CIN CMIR CMRR Input Resistance Input Capacitance Input Common Mode Voltage Range Common Mode Rejection Ratio DC, VCM = 1.5V to 3.5V RL = 2k to Vs/2 VO IOUT ISC Output Voltage Swing Linear Output Current Short-Circuit Output Current RL = 150 to Vs/2 VO = +Vs/2 VO = shorted to +Vs or GND 70 1 1.2 to 3.8 90 1 to 4 1.1 to 3.9 50 75 M pF V dB Parameter Conditions Min. Typ. Max. Units Output Characteristics V V mA mA FHP3350, FHP3450 Rev. 1.0.3 5 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Electrical Characteristics at 5V TA = 25C, VS = 5V, Rf = 249, RL = 150 to GND, G = 2; unless otherwise noted. Symbol BWss BWLs BW0.1dB BW0.1dBss tR, tF tS OS SR HD2 HD3 THD DG DP en in XTALK VIO dVIO Ibn dIbn IIO PSRR AOL IS ISD OFFISO OFFCOUT CHISO TON TOFF VOFF VON Parameter -3dB Bandwidth Full-Power Bandwidth 0.1dB Gain Flatness - Large Signal 0.1dB Gain Flatness - Small Signal Rise and Fall Time Settling Time to 0.1% Overshoot Slew Rate 2nd Harmonic Distortion 3rd Harmonic Distortion Total Harmonic Distortion Differential Gain Differenital Phase Input Voltage Noise Input Current Noise Crosstalk Input Offset Voltage1 Average Drift Input Bias Current1 Average Drift Input Offset Current1 Power Supply Rejection Ratio1 Open Loop Gain1 Supply Current per Amplifier1 Disable Supply Current per Amp1 Off Isolation Off Output Capacitance Channel-to-Channel Isolation Turn-On Time Turn-Off Time Power Down Input Voltage Enable Input Voltage 5MHz DC DC Conditions No Peaking, G = +2, VOUT = 0.2Vpp No Peaking, G = +2, VOUT = 2Vpp G = +2, VOUT = 2Vpp G = +2, VOUT = 0.2Vpp VOUT = 0.2V step VOUT = 2V step VOUT = 0.2V step 2V step. G = -1 VOUT = 2Vpp, 5MHz VOUT = 2Vpp, 5MHz VOUT = 2Vpp, 5MHz NTSC (3.58MHz); AC coupled NTSC (3.58MHz); AC coupled > 100kHz > 100kHz at 5MHz Min. Typ. 210 210 30 50 2 20 1 1100 -70 -74 -68 0.07 0.03 9 1 -71 Max. Units MHz MHz MHz MHz ns ns % V/s dBc dBc dB % nV/Hz pA/Hz dB Frequency Domain Response Time Domain Response Distortion / Noise Response DCPerformance -7 -500 -500 58 52 1 15 100 0.3 50 75 58 3.6 Disable Mode 5MHz 45 -65 3 -85 300 80 DISABLE pins; disabled if pin is grounded or pulled below VOFF DISABLE pins; enabled if pin is left open or pulled above VON +Vs - 1.9 +Vs - 3.1 5 100 500 500 7 mV V/C nA nA/C nA dB dB mA A dB pF dB ns ns V V Disable Characteristics Notes: 1. 100% tested at 25C FHP3350, FHP3450 Rev. 1.0.3 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Electrical Characteristics at 5V (Continued) TA = 25C, VS = 5V, Rf = 249, RL = 150 to GND, G = 2; unless otherwise noted. Symbol Input Characteristics RIN CIN CMIR CMRR Input Resistance Input Capacitance Input Common Mode Voltage Range Common Mode Rejection Ratio1 DC, VCM = -3.5V to 3.5V RL = 2k RL = 150 Vo = 0V VO shorted to GND 1 Parameter Conditions Min Typ 70 0.6 -3.8 to 3.8 Max Units M pF V dB 58 98 4 Output Characteristics VO IOUT ISC Output Voltage Swing Linear Output Current Short-Circuit Output Current V V mA mA 3.2 3.7 55 83 Notes: 1. 100% tested at 25C FHP3350, FHP3450 Rev. 1.0.3 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Typical Performance Characteristics TA = 25C, VS = 5V, Rf = 249, RL = 150 to VS/2, G = 2; unless otherwise noted. 4 1 Normalized Gain (dB) 0 -2 -4 -6 -8 -10 -12 0.1 Normalized Gain (dB) 2 G = 10 G=5 G=2 G = 1.5 0 -1 -2 -3 -4 -5 -6 -7 Vo = 0.2Vpp G = -10 G = -5 G = -2 G = -1 Vo = 0.2Vpp 1 10 100 1000 0.1 1 10 100 1000 Frequency (MHz) Frequency (MHz) Figure 1. Non-Inverting Freq. Response (5V) Figure 2. Inverting Freq. Response (5V) 3 G = 1.5 1 Normalized Gain (dB) -3 -6 -9 -12 -15 -18 -21 0.1 1 Vo = 0.2Vpp Normalized Gain (dB) 0 G = 10 G=5 G=2 0 -1 -2 -3 -4 -5 -6 -7 Vo = 0.2Vpp G = -10 G = -5 G = -2 G = -1 10 100 1000 0.1 1 10 100 1000 Frequency (MHz) Frequency (MHz) Figure 3. Non-Inverting Freq. Response (+5V) Figure 4. Inverting Freq. Response (+5V) 3 Normalized Gain (dB) Normalized Gain (dB) 0 -3 -6 -9 -12 -15 -18 -21 0.1 Vo = 0.2Vpp CL = 500pF RS = 10 CL = 100pF RS = 20 CL = 50pF RS = 30 1 0 -1 -2 -3 -4 -5 -6 -7 -8 Vo = 0.2Vpp RL = 50 RL = 150 RL = 1k CL = 1000pF RS = 7 CL = 2000pF RS = 5 + 1k 1k Rs CL RL 1 10 100 1000 0.1 1 10 100 1000 Frequency (MHz) Frequency (MHz) Figure 5. Frequency Response vs. CL(+5V) Figure 6. Frequency Response vs. RL(+5V) FHP3350, FHP3450 Rev. 1.0.3 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Typical Performance Characteristics TA = 25C, VS = 5V, Rf = 249, RL = 150 to VS/2, G = 2; unless otherwise noted. 1 1.0 Normalized Gain (dB) -1 -2 -3 -4 -5 -6 -7 0.1 1 10 100 1000 VO = 1Vpp VO = 4Vpp Normalized Gain (dB) 0 0.75 0.50 0.25 0 VS = 5V Vo = 2Vpp VS = 5V Vo = 0.2Vpp VS = 5V Vo = 0.2Vpp 0.1dB -0.1dB -0.25 -0.50 -0.75 -1.0 0.1 1 VO = 2Vpp 10 100 1000 Frequency (MHz) Frequency (MHz) Figure 7. Large Signal Freq. Response (5V) Figure 8. Gain Flatness vs. Frequency -45 -50 -55 -60 -65 -70 -75 -80 -85 -90 -95 0.1 VO = 2Vpp -45 -50 -55 -60 -65 -70 -75 -80 RL = 1k VO = 2Vpp HD2 (dBc) RL = 150 HD3 (dBc) RL = 150 -85 -90 -95 10 0.1 1 RL = 1k 1 10 Frequency (MHz) Frequency (MHz) Figure 9. HD2 vs. Frequency (5V) Figure 10. HD3 vs. Frequency (5V) -45 -50 -55 -60 -65 -70 -75 -80 -85 -90 -95 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 30MHz -45 -50 -55 -60 -65 -70 -75 -80 -85 -90 -95 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 1MHz 10MHz 5MHz 30MHz HD2 (dBc) 5MHz 1MHz Output Amplitude (Vpp) HD3 (dBc) 10MHz Output Amplitude (Vpp) Figure 11. HD2 vs. Vo (5V) Figure 12. HD3 vs. Vo (5V) FHP3350, FHP3450 Rev. 1.0.3 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Typical Performance Characteristics TA = 25C, VS = 5V, Rf = 249, RL = 150 to VS/2, G = 2; unless otherwise noted. 90 80 +5V 5V 90 80 +5V, 5V CMRR (dB) 60 50 40 30 20 10k 100k 1 10 100 PSRR (dB) 70 70 60 50 40 30 10k 100k 1 10 100 Frequency (MHz) Frequency (MHz) Figure 13. CMRR vs. Frequency Figure 14. PSRR vs. Frequency 80 70 0 Phase 100 -20 -40 -60 -80 -100 -120 Gain Input Voltage Noise (nV/Hz) 90 80 70 60 50 40 30 20 10 0 0.0001 0.001 0.01 0.1 1 10 100 Open Loop Gain (dB) 60 50 40 30 20 10 0 -10 -20 Open Loop Phase () -140 -160 -180 -200 Vs = +5V + 5V 10k 100k 1 10 100 1000 Frequency (MHz) Frequency (MHz) Figure 15. Open Loop Gain & Phase vs. Freq. Figure 16. Input Voltage Noise (+5V) -35 -40 -45 0.25 0.20 Crosstalk (dB) -55 -60 -65 -70 -75 -80 -85 0.1 1 10 100 +5V 5V Voltage (V) -50 0.15 0.10 0.05 0 -0.05 0 10 20 30 40 50 60 70 80 90 100 Frequency (MHz) Time (ns) Figure 17. Crosstalk vs. Frequency (+5V) Figure 18. Small Signal Pulse Response (+5V) FHP3350, FHP3450 Rev. 1.0.3 10 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Typical Performance Characteristics TA = 25C, VS = 5V, Rf = 249, RL = 150 to VS/2, G = 2; unless otherwise noted. 2.5 2.0 0.25 0.20 Voltage (V) 1.0 0.5 0 -0.5 0 10 20 30 40 50 60 70 80 90 100 Voltage (V) 1.5 0.15 0.10 0.05 0 -0.05 0 10 20 30 40 50 60 70 80 90 100 Time (ns) Time (ns) Figure 19. Large Signal Pulse Response (+5V) Figure 20. Small Signal Pulse Response (5V) 2.25 2.0 1.75 1.50 1.25 1.0 0.75 0.50 0.25 0 -0.25 0 10 20 30 40 50 60 70 80 90 100 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 0 10 20 30 40 50 60 70 80 90 100 Voltage (V) Time (ns) Voltage (V) Time (ns) Figure 21. Large Signal Pulse Response (5V) Figure 22. Large Signal Pulse Response (5V) 0.04 0.03 0.04 0.08 0.06 0.08 Phase Gain Differential Gain (%) 0.02 0.01 0 0.02 0.01 Differential Gain (%) Gain 0.03 0.06 Differential Phase () Differential Phase () 0.04 0.02 0 0.04 0.02 0 -0.02 -0.04 Phase 0 -0.01 -0.02 -0.01 -0.02 -0.03 -0.04 NTSC - AC Coupled into 220F -0.02 -0.04 -0.06 -0.08 NTSC - DC Coupled -0.03 -0.04 0.15 0.25 0.35 -0.06 -0.08 0.05 0.15 0.25 0.35 -0.35 -0.25 -0.15 -0.05 0.05 -0.35 -0.25 -0.15 -0.05 Input Voltage (V) Input Voltage (V) Figure 23. Differential Gain and Phase (2.5V) Figure 24. Differential Gain and Phase (2.5V) FHP3350, FHP3450 Rev. 1.0.3 11 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Typical Performance Characteristics TA = 25C, VS = 5V, Rf = 249, RL = 150 to VS/2, G = 2; unless otherwise noted. 0.06 0.04 Gain 0.06 0.04 0.06 0.04 Gain 0.06 0.04 Differential Phase () Differential Phase () Differential Gain (%) 0.02 0 Phase 0.02 0 -0.02 -0.04 -0.06 NTSC - AC Coupled Differential Gain (%) 0.02 0 Phase 0.02 0 -0.02 -0.04 -0.06 -0.02 -0.04 -0.06 -0.08 -0.02 -0.04 -0.06 -0.08 NTSC - DC Coupled -0.08 0.1 0.3 0.5 0.7 -0.08 0.1 0.3 0.5 0.7 -0.7 -0.5 -0.3 -0.1 -0.7 -0.5 -0.3 -0.1 Input Voltage (V) Input Voltage (V) Figure 25. Differential Gain and Phase (5V) 3 2 0.15 0.1 Figure 26. Differential Gain and Phase (5V) -40 -45 -50 -55 -60 -65 -70 -75 -80 -85 -90 0.1 Measuring CH1 with 0.2Vpp on Ch3 Measuring CH3 with 0.2Vpp on Ch1 0 Output 0 -0.05 -1 -2 -3 0 2 4 6 8 10 12 14 16 18 20 Disable -0.1 -0.15 Isolation (dB) Disable (V) 1 0.05 Output (V) 1 10 100 Time (s) Frequency (MHz) Figure 27. Enable/Disable Response (2.5V) -35 -40 -45 Figure 28. Channel-to-Channel Isolation (+5V) 210 -50 -55 -60 -65 -70 -75 -80 -85 0.1 1 10 100 Off Output Impedance (dB) Any Channel 190 170 150 130 110 90 70 50 30 10 10k Vs = 5V & 5V (120dB = 1M) Off Isolation (dB) 100k 1 10 100 Frequency (MHz) Frequency (MHz) Figure 29. Off Isolation (+5V) Figure 30. Off Output Impedance (+5V) FHP3350, FHP3450 Rev. 1.0.3 1 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Applications Information General Description The FHP3350 and FHP3450 are low-cost, high-performance, voltage feedback amplifiers designed for video applications. These triple and quad amplifiers consume only 3.6mA of supply current per channel and are capable of driving dual (75) video loads while providing 0.1dB of gain flatness to 30MHz. Consumer video applications also benefit from the low 0.07% differential gain and 0.03 differential phase errors. The FHP3350 offers three outputs that can be put into a high-impedance disable state to allow for video multiplexing or minimize power consumption. These amplifiers are designed to operate from 5V (2.5V) to 12V (6V) supplies. The outputs swing to within 1.3V of either supply rail to accommodate video signals on a single 5V supply. The FHP3350 and FHP3450 are designed on a complementary bipolar process. They provide 210MHz of full-power bandwidth and 1,100V/s of slew rate at a supply voltage of 5V. The combination of high performance, low power, and excellent video performance make these amplifiers well suited for use in many digital consumer video appliances as well as many general-purpose, high-speed applications. Where Is is the supply current, Vs+ is the positive supply pin voltage, Vs- is the negative supply pin voltage, Vo(RMS) is the RMS output voltage and IOUT(RMS) is the RMS output current delivered to the load. Follow the maximum power derating curves shown in Figure 32 below to ensure proper operation. Maximum Power Dissipation (W) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -40 -20 0 20 40 60 80 TSSOP-14 SOIC-14 Ambient Temperature (C) Figure 32. Maximum Power Derating OverdriveRecovery For an amplifier, an overdrive condition occurs when the output and/or input ranges are exceeded. The recovery time varies based on whether the input or output is overdriven and by how much the ranges are exceeded. The FHP3350/3450 will typically recover in less than 50ns from an overdrive condition. Figure 33 shows the FHP3350 in an overdriven condition. Driving Capacitive Loads The Frequency Response vs. CL plot on page 8, illustrates the response of the FHP3350 Family. A small series resistance (Rs) at the output of the amplifier, illustrated in Figure 1, will improve stability and settling performance. Rs values in the Frequency Response vs. CL plot were chosen to achieve maximum bandwidth with less than 1dB of peaking. For maximum flatness, use a larger Rs. 2 1.5 Vs = 2.5V G = +5 Output Amplitude (V) Rs Rf Rg CL RL 1 0.5 0 Input -0.5 -1 -1.5 -2 0 0.1 02 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Figure31.TypicalTopologyforDriving Capacitive Loads Power Dissipation The maximum internal power dissipation allowed is directly related to the maximum junction temperature. If the maximum junction temperature exceeds 150C for an extended time, device failure may occur. The FHP3350 and FHP3450 are short circuit protected. However, this may not guarantee that the maximum junction temperature (+150C) is not exceeded under all conditions. RMS Power Dissipation can be calculated using the following equation: Power Dissipation = Is * (Vs+ - Vs-) + (Vs+ - Vo(RMS)) * IOUT(RMS) Time (s) Figure33.OverdriveRecovery FHP3350, FHP3450 Rev. 1.0.3 13 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Layout Considerations General layout and supply bypassing play major roles in high frequency performance. Fairchild has evaluation boards to use as a guide for high frequency layout and as aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: * Include 6.8F and 0.01F ceramic capacitors * Place the 6.8F capacitor within 0.75 inches of the power pin * Place the 0.01F capacitor within 0.1 inches of the power pin * Remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance * Minimize all trace lengths to reduce series inductances Refer to the evaluation board layouts below for more information. EvaluationBoardInformation The following evaluation boards are available to aid in the testing and layout of these devices: EvaluationBoard# KEB019 KEB020 KEB012 KEB018 Products FHP3350IM14X FHP3350IMTC14X FHP3450IMTC14X FHP3450IM14X Figure 35. FHP3350 KEB019 (Top Side) Evalutaion Board Schematics DISABLE 1 IN1 1 RIN1 RF1 ROUT1 OUT1 RG1 DISABLE 2 IN2 2 RIN2 RF2 ROUT2 OUT2 RG2 DISABLE 3 IN3 3 RIN3 RF3 ROUT3 OUT3 RG3 Figure 36. FHP3350 KEB019 (Bottom Side) Figure34.FHP3350 KEB019/KEB020 Schematic FHP3350, FHP3450 Rev. 1.0.3 14 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Figure 37. FHP3350 KEB020 (Top Side) Figure 39. FHP3450 KEB012/KEB018 Schematic Figure 38. FHP3350 KEB020 (Bottom Side) Figure 40. FHP3450 KEB012 (Top Side) FHP3350, FHP3450 Rev. 1.0.3 15 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Figure 41. FHP3450 KEB012 (Bottom Side) Figure 43. FHP3450 KEB018 (Bottom Side) Figure 42. FHP3450 KEB018 (Top Side) FHP3350, FHP3450 Rev. 1.0.3 1 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Mechanical Dimensions 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package NumberMTC14RevD FHP3350, FHP3450 Rev. 1.0.3 1 www.fairchildsemi.com FHP3350, FHP3450 Triple and Quad Voltage Feedback Amplifiers Mechanical Dimensions 14-Lead Small Outline Package (SOIC) NumberM14ARevL FHP3350, FHP3450 Rev. 1.0.3 1 www.fairchildsemi.com (c) 2006 Fairchild Semiconductor Corporation FHP3350, FHP3450 Rev. 1.0.3 15 www.fairchildsemi.com |
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