LT1630CS8

LT1630/LT1631 30MHz, 10V/µs, Dual/Quad Rail-to-Rail Input and Output Precision Op Amps FEATURES s s s s s s s s s s s s s s s DESCRIPTION The LT ®1630/LT1631 are dual/quad, rail-to-rail input and output op amps with a 30MHz gain-bandwidth product and a 10V/µs slew rate. The LT1630/LT1631 have excellent DC precision over the full range of operation. Input offset voltage is typically less than 150µV and the minimum open-loop gain of one million into a 10k load virtually eliminates all gain error. To maximize common mode rejection, the LT1630/LT1631 employ a patented trim technique for both input stages, one at the negative supply and the other at the positive supply, that gives a typical CMRR of 106dB over the full input range. The LT1630/LT1631 maintain their performance for supplies from 2.7V to 36V and are specified at 3V, 5V and ±15V supplies. The inputs can be driven beyond the supplies without damage or phase reversal of the output. The output delivers load currents in excess of 35mA. The LT1630 is available in 8-pin PDIP and SO packages with the standard dual op amp pinout. The LT1631 features the standard quad op amp configuration and is available in a 14-pin plastic SO package. These devices can be used as plug-in replacements for many standard op amps to improve input/output range and performance. Gain-Bandwidth Product: 30MHz Slew Rate: 10V/µs Low Supply Current per Amplifier: 3.5mA Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Input Offset Voltage, Rail-to-Rail: 525µV Max Input Offset Current: 150nA Max Input Bias Current: 1000nA Max Open-Loop Gain: 1000V/mV Min Low Input Noise Voltage: 6nV/√Hz Typ Low Distortion: – 91dBc at 100kHz Wide Supply Range: 2.7V to ±15V Large Output Drive Current: 35mA Min Dual in 8-Pin PDIP and SO Packages Quad in Narrow 14-Pin SO Package APPLICATIONS s s s s s Active Filters Rail-to-Rail Buffer Amplifiers Driving A/D Converters Low Voltage Signal Processing Battery-Powered Systems , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATION Single Supply, 400kHz, 4th Order Butterworth Filter 10 0 –10 –20 2.32k 2.32k VIN 220pF 6.65k 47pF 2.74k 2.74k 5.62k 470pF 22pF GAIN (dB) 1/2 LT1630 1/2 LT1630 VOUT VS/2 1630/31 TA01 U + – U + – U Frequency Response –30 –40 –50 –60 –70 –80 –90 0.1k VS = 3V, 0V VIN = 2.5VP-P 1k 10k 100k FREQUENCY (Hz) 1M 10M 1630/31 TA02 1 LT1630/LT1631 ABSOLUTE MAXIMUM RATINGS Total Supply Voltage (V + to V –) ............................. 36V Input Current ..................................................... ±10mA Output Short-Circuit Duration (Note 2) ........ Continuous Operating Temperature Range ............... – 40°C to 85°C PACKAGE/ORDER INFORMATION TOP VIEW OUT A 1 – IN A 2 + IN A 3 V – ORDER PART NUMBER 8 V+ OUT B – IN B + IN B 7 A B 6 5 LT1630CN8 LT1630CS8 S8 PART MARKING 1630 4 N8 PACKAGE 8-LEAD PDIP S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, θJA = 130°C/ W (N8) TJMAX = 150°C, θJA = 190°C/ W (S8) Consult factory for Military and Industrial grade parts. ELECTRICAL CHARACTERISTICS TA = 25°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER VOS ∆VOS IB ∆IB Input Offset Voltage Input Offset Shift CONDITIONS VCM = V + VCM = V – VCM = V – to V + 0 –1000 MIN TYP 150 150 150 200 540 – 540 1080 25 25 20 20 40 300 6 0.9 5 VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k 500 400 3500 2000 MAX 525 525 525 950 1000 0 2000 300 300 150 150 300 UNITS µV µV µV µV nA nA nA nA nA nA nA nA nVP-P nV/√Hz pA/√Hz pF V/mV V/mV Input Offset Voltage Match (Channel-to-Channel) VCM = V –, V + (Note 5) Input Bias Current VCM = V + VCM = V – Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) VCM = V – to V + VCM VCM = V – (Note 5) VCM = V + VCM = V – VCM = V – to V + 0.1Hz to 10Hz f = 1kHz f = 1kHz = V + (Note 5) IOS ∆IOS en in CIN AVOL Input Offset Current Input Offset Current Shift Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain 2 U U W WW U W (Note 1) Specified Temperature Range (Note 4) ... – 40°C to 85°C Junction Temperature .......................................... 150°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C TOP VIEW OUTA 1 – IN A 2 + IN A 3 V+ 4 + IN B 5 – IN B 6 OUT B 7 B C A D 14 OUT D 13 – IN D 12 + IN D 11 V – 10 + IN C 9 8 – IN C OUT C ORDER PART NUMBER LT1631CS S PACKAGE 14-LEAD PLASTIC SO TJMAX = 150°C, θJA = 150°C/ W LT1630/LT1631 ELECTRICAL CHARACTERISTICS TA = 25°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER CMRR Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Minimum Supply Voltage (Note 9) VOL Output Voltage Swing Low (Note 6) CONDITIONS VS = 5V, VCM VS = 3V, VCM = V – to V + VS = 5V, VCM = V – to V + VS = 3V, VCM = V – to V + VS = 2.7V to 12V, VCM = VO = 0.5V VS = 2.7V to 12V, VCM = VO = 0.5V VCM = VO = 0.5V No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V No Load ISOURCE = 0.5mA ISOURCE = 20mA, VS = 5V ISOURCE = 15mA, VS = 3V VS = 5V VS = 3V f = 100kHz VS = 5V, AV = – 1, RL = Open, VO = 4V VS = 3V, AV = – 1, RL = Open VS = 5V, AV = 1, RL = 1k, 0.01%, VSTEP = 2V ± 20 ± 15 15 4.6 4.2 = V– to V + MIN 79 75 72 67 87 80 TYP 90 86 96 88 105 107 2.6 14 31 600 500 15 42 900 680 ± 41 ± 30 3.5 30 9.2 8.5 520 4.4 2.7 30 60 1200 1000 40 80 1800 1400 MAX UNITS dB dB dB dB dB dB V mV mV mV mV mV mV mV mV mA mA mA MHz V/µs V/µs ns VOH Output Voltage Swing High (Note 6) ISC IS GBW SR tS Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate (Note 8) Settling Time 0°C < TA < 70°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER VOS VOS TC ∆VOS IB ∆IB Input Offset Voltage Input Offset Voltage Drift (Note 3) VCM = V + – 0.1V Input Offset Voltage Shift VCM = V – + 0.2V to V + – 0.1V Input Offset Voltage Match (Channel-to-Channel) VCM = V – + 0.2V, V + – 0.1V (Note 5) Input Bias Current VCM = V + – 0.1V VCM = V – + 0.2V Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS ∆IOS AVOL CMRR Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) VCM = V – + 0.2V to V + – 0.1V VCM VCM = V – + 0.2V (Note 5) VCM = V + – 0.1V VCM = V – + 0.2V VCM = V – + 0.2V to V + – 0.1V VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k VS = 5V, VCM = V – + 0.2V to V + – 0.1V VS = 3V, VCM = V – + 0.2V to V + – 0.1V VS = 5V, VCM = V – + 0.2V to V + – 0.1V VS = 3V, VCM = V – + 0.2V to V + – 0.1V = V + – 0.1V (Note 5) CONDITIONS VCM VCM = V – + 0.2V = V + – 0.1V q q q q q q q q q q q q q q q q q q q q MIN TYP 175 175 2.5 1 175 200 MAX 700 700 5.5 3.5 750 1200 1100 0 2200 340 340 170 170 340 UNITS µV µV µV/°C µV/°C µV µV nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB 0 – 1100 585 – 585 1170 25 25 20 20 40 450 350 75 71 70 65 3500 2000 89 83 90 85 3 LT1630/LT1631 ELECTRICAL CHARACTERISTICS 0°C < TA < 70°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Minimum Supply Voltage (Note 9) VOL Output Voltage Swing Low (Note 6) CONDITIONS VS = 3V to 12V, VCM = VO = 0.5V VS = 3V to 12V, VCM = VO = 0.5V VCM = VO = 0.5V No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V VS = 5V VS = 3V f = 100kHz VS = 5V, AV = – 1, RL = Open, VO = 4V VS = 3V, AV = – 1, RL = Open q q q q q q q q q q q q q q q q q MIN 82 78 TYP 101 102 2.6 17 36 700 560 16 50 820 550 MAX UNITS dB dB 2.7 40 80 1400 1200 40 100 1600 1100 V mV mV mV mV mV mV mV mV mA mA VOH Output Voltage Swing High (Note 6) ISC IS GBW SR Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate (Note 8) ± 18 ± 13 14 4.2 3.9 ± 36 ± 25 4.0 28 8.3 7.7 5.1 mA MHz V/µs V/µs – 40°C < TA < 85°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 4) SYMBOL PARAMETER VOS VOS TC ∆VOS IB ∆IB Input Offset Voltage Input Offset Voltage Drift (Note 3) VCM = V + – 0.1V Input Offset Voltage Shift VCM = V – + 0.2V to V + – 0.1V Input Offset Voltage Match (Channel-to-Channel) VCM = V – + 0.2V, V + (Note 5) Input Bias Current VCM = V + – 0.1V VCM = V – + 0.2V Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS ∆IOS AVOL CMRR Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Minimum Supply Voltage (Note 9) VOL Output Voltage Swing Low (Note 6) VCM = V – + 0.2V to V + – 0.1V VCM = V + – 0.1V (Note 5) VCM = V – + 0.2V (Note 5) VCM = V + – 0.1V VCM = V – + 0.2V VCM = V – + 0.2V to V + – 0.1V VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k VS = 5V, VCM = V – + 0.2V to V + – 0.1V VS = 3V, VCM = V – + 0.2V to V + – 0.1V VS = 5V, VCM = V – + 0.2V to V + – 0.1V VS = 3V, VCM = V – + 0.2V to V + – 0.1V VS = 3V to 12V, VCM = VO = 0.5V VS = 3V to 12V, VCM = VO = 0.5V VCM = VO = 0.5V No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V CONDITIONS VCM = V + – 0.1V VCM = V – + 0.2V q q q q q q q q q q q q q q q q q q q q q q q q q q q MIN TYP 250 250 2.5 1 200 210 MAX 775 775 5.5 3.5 750 1500 1300 0 2600 390 390 195 195 390 UNITS µV µV µV/°C µV/°C µV µV nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB dB 0 – 1300 650 – 650 1300 25 25 25 25 50 400 300 75 71 69 65 82 78 3500 1800 87 83 89 85 98 102 2.6 18 38 730 580 2.7 40 80 1500 1200 V mV mV mV mV 4 LT1630/LT1631 ELECTRICAL CHARACTERISTICS – 40°C < TA < 85°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 4) SYMBOL PARAMETER VOH Output Voltage Swing High (Note 6) CONDITIONS No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V VS = 5V VS = 3V f = 100kHz VS = 5V, AV = –1, RL = Open, VO = 4V VS = 3V, AV = –1, RL = Open q q q q q q q q q q MIN TYP 15 55 860 580 MAX 40 110 1700 1200 UNITS mV mV mV mV mA mA ISC IS GBW SR Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate (Note 8) ± 17 ± 12 14 3.5 3.3 ± 34 ± 24 4.1 28 7 6.5 5.2 mA MHz V/µs V/µs TA = 25°C, VS = ± 15V, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER VOS ∆VOS IB ∆IB Input Offset Voltage Input Offset Voltage Shift Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS ∆IOS en in CIN AVOL Input Offset Current Input Offset Current Shift Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain Channel Separation CMRR PSRR VOL Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Output Voltage Swing Low (Note 6) CONDITIONS VCM VCM = V – VCM = V – to V + = V –, V + (Note 5) 0 – 1100 VCM = V + VCM = V – VCM = V – to V + VCM VCM = V – (Note 5) VCM = V + VCM = V – VCM = V – to V + 0.1Hz to 10Hz f = 1kHz f = 1kHz f = 100kHz VO = – 14.5V to 14.5V, RL = 10k VO = – 10V to 10V, RL = 2k VO = – 10V to 10V, RL = 2k VCM = V– to V + VCM = V – to V + VS = ± 5V to ±15V VS = ± 5V to ±15V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA 1000 650 112 89 86 87 82 = V + (Note 5) = V+ MIN TYP 220 220 150 200 550 – 550 1100 20 20 20 20 40 300 6 0.9 3 5000 3500 134 106 110 105 107 16 150 600 15 250 1200 35 300 1200 40 500 2400 MAX 1000 1000 1000 1500 1100 0 2200 300 300 150 150 300 UNITS µV µV µV µV nA nA nA nA nA nA nA nA nVP-P nV/√Hz pA/√Hz pF V/mV V/mV dB dB dB dB dB mV mV mV mV mV mV Input Offset Voltage Match (Channel-to-Channel) VCM VOH Output Voltage Swing High (Note 6) 5 LT1630/LT1631 ELECTRICAL CHARACTERISTICS TA = 25°C, VS = ± 15V, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER ISC IS GBW SR tS Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate Settling Time f = 100kHz AV = – 1, RL = Open, VO = ± 10V, Measure at VO = ± 5V 0.01%, VSTEP = 10V, AV = 1, RL = 1k 15 5 CONDITIONS MIN ± 35 TYP ± 70 4.1 30 10 1.2 5.0 MAX UNITS mA mA MHz V/µs µs 0°C < TA < 70°C, VS = ± 15V, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER VOS VOS TC ∆VOS IB ∆IB Input Offset Voltage Input Offset Voltage Drift (Note 3) VCM = V + – 0.1V Input Offset Voltage Shift VCM = V – + 0.2V to V + – 0.1V Input Offset Voltage Match (Channel-to-Channel) VCM = V – + 0.2V, V + – 0.1V (Note 5) Input Bias Current VCM = V + – 0.1V VCM = V – + 0.2V Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS ∆IOS AVOL Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Channel Separation CMRR PSRR VOL Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Output Voltage Swing Low (Note 6) VCM = V – + 0.2V to V + – 0.1V VCM VCM = V – + 0.2V (Note 5) VCM = V + – 0.1V VCM = V – + 0.2V VCM = V – + 0.2V to V + – 0.1V VO = – 14.5V to 14.5V, RL = 10k VO = – 10V to 10V, RL = 2k VO = – 10V to 10V, RL = 2k VCM = V– + 0.2V to V + – 0.1V VCM = V – + 0.2V to V + – 0.1V VS = ± 5V to ± 15V VS = ± 5V to ± 15V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA = V + – 0.1V (Note 5) CONDITIONS VCM VCM = V – + 0.2V = V + – 0.1V q q q q q q q q q q q q q q q q q q q q q q q q q q q q q MIN TYP 300 300 4.5 1.5 180 300 MAX 1250 1250 7 4 1100 2000 1200 0 2400 350 350 175 175 350 UNITS µV µV µV/°C µV/°C µV µV nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB 0 – 1200 600 – 600 1200 30 30 25 25 50 900 600 112 88 84 86 80 6000 4000 132 104 104 100 104 19 175 670 15 300 1400 45 350 1400 40 600 2800 5.6 mV mV mV mV mV mV mA mA MHz V/µs VOH Output Voltage Swing High (Note 6) ISC IS GBW SR Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate f = 100kHz AV = – 1, RL = Open, VO = ± 10V, Measured at VO = ± 5V ± 28 14 4.5 ± 57 4.6 28 9 q q 6 LT1630/LT1631 ELECTRICAL CHARACTERISTICS – 40°C < TA < 85°C, VS = ± 15V, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 4) SYMBOL PARAMETER VOS VOS TC ∆VOS IB ∆IB Input Offset Voltage Input Offset Voltage Drift (Note 3) VCM = V + – 0.1V Input Offset Voltage Shift VCM = V – + 0.2V to V + – 0.1V = V – + 0.2V, V + – 0.1V (Note 5) Input Offset Voltage Match (Channel-to-Channel) VCM Input Bias Current VCM = V + – 0.1V VCM = V – + 0.2V Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS ∆IOS AVOL Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Channel Separation CMRR PSRR VOL Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Output Voltage Swing Low (Note 6) CONDITIONS VCM – 0.1V VCM = V – + 0.2V = V+ q q q q q q q q q q q q q q q q q q q q q q q q q q q q q MIN TYP 350 350 4.5 1.5 180 350 MAX 1400 1400 7 4 1200 2200 1400 0 2800 420 420 210 210 420 UNITS µV µV µV/°C µV/°C µV µV nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB 0 – 1400 690 – 690 1380 30 30 30 30 60 VCM = V – + 0.2V to V + – 0.1V VCM VCM = V – + 0.2V (Note 5) VCM = V + – 0.1V VCM = V – + 0.2V VCM = V – + 0.2V to V + – 0.1V VO = – 14.5V to 14.5V, RL = 10k VO = – 10V to 10V, RL = 2k VO = – 10V to 10V, RL = 2k VCM = V – + 0.2V to V + – 0.1V VCM = V – + 0.2V to V + – 0.1V VS = ± 5V to ± 15V VS = ± 5V to ± 15V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA = V + – 0.1V (Note 5) 700 400 112 87 84 84 80 6000 4000 132 104 104 100 100 22 180 700 15 300 1500 50 350 1400 40 600 3000 5.9 mV mV mV mV mV mV mA mA MHz V/µs VOH Output Voltage Swing High (Note 6) ISC IS GBW SR Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate f = 100kHz AV = – 1, RL = Open, VO = ± 10V, Measure at VO = ± 5V ± 27 14 4.2 ± 54 4.8 27 8.5 q q The q denotes specifications that apply over the full operating temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: A heat sink may be required to keep the junction temperature below the absolute maximum rating when the output is shorted indefinitely. Note 3: This parameter is not 100% tested. Note 4: The LT1630C/LT1631C are guaranteed to meet specified performance from 0°C to 70°C and are designed, characterized and expected to meet these extended temperature limits, but are not tested at – 40°C and 85°C. Guaranteed I grade parts are available, consult factory. Note 5: Matching parameters are the difference between amplifiers A and D and between B and C on the LT1631; between the two amplifiers on the LT1630. Note 6: Output voltage swings are measured between the output and power supply rails. Note 7: VS = 3V, VS = ± 15V GBW limit guaranteed by correlation to 5V tests. Note 8: VS = 3V, VS = 5V slew rate limit guaranteed by correlation to ±15V tests. Note 9: Minimum supply voltage is guaranteed by testing the change of VOS to be less than 250µV when the supply voltage is varied from 3V to 2.7V. 7 LT1630/LT1631 TYPICAL PERFORMANCE CHARACTERISTICS VOS Distribution, VCM = 0V (PNP Stage) 50 VS = 5V, 0V VCM = 0V 40 PERCENT OF UNITS (%) PERCENT OF UNITS (%) PERCENT OF UNITS (%) 30 20 10 0 –500 –300 100 300 –100 INPUT OFFSET VOLTAGE (µV) Supply Current vs Supply Voltage 5.5 5.0 SUPPLY CURRENT PER AMPLIFIER (mA) SUPPLY CURRENT PER AMPLIFIER (mA) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 0 4 INPUT BIAS CURRENT (nA) TA = 125°C TA = 25°C TA = – 55°C 8 12 16 20 24 28 TOTAL SUPPLY VOTAGE (V) Input Bias Current vs Temperature 1.0 0.8 INPUT BIAS CURRENT (µA) 0.6 0.4 0.2 0 VS = ± 15V VCM = – 15V VS = 5V, 0V VCM = 0V VS = 5V, 0V VCM = 5V SATURATION VOLTAGE (V) 10 VS = ± 15V VCM = 15V 1 TA = 125°C 0.1 TA = 25°C TA = – 55°C SATURATION VOLTAGE (V) –0.2 –0.4 –0.6 –0.8 –1.0 –50 –35 –20 –5 10 25 40 55 70 85 100 TEMPERATURE (°C) 1630/31 G04 8 UW 1630/31 G32 1630/31 G01 VOS Distribution, VCM = 5V (NPN Stage) 50 VS = 5V, 0V VCM = 5V 40 40 50 ∆VOS Shift for VCM = 0V to 5V VS = 5V, 0V 30 30 20 20 10 10 500 0 –500 –300 100 300 –100 INPUT OFFSET VOLTAGE (µV) 500 1630/31 G33 0 –500 –300 100 300 –100 INPUT OFFSET VOLTAGE (µV) 500 1630/31 G34 Supply Current vs Temperature 600 VS = ±15V 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 25 50 75 –75 –50 –25 0 TEMPERATURE (°C) 100 125 1630/31 G02 Input Bias Current vs Common Mode Voltage 400 200 0 –200 –400 –600 –800 –1000 –2 –1 TA = 125°C TA = 25°C TA = – 55°C 0 2 3 4 5 1 COMMON MODE VOLTAGE (V) 6 VS = 5V, 0V VS = 5V, 0V 32 36 1630/31 G03 Output Saturation Voltage vs Load Current (Output Low) 10 VS = 5V, 0V Output Saturation Voltage vs Load Current (Output High) VS = 5V, 0V 1 TA = 125°C 0.1 TA = 25°C TA = – 55°C 0.01 0.01 0.1 1 10 LOAD CURRENT (mA) 100 1630/31 G05 0.01 0.01 0.1 1 10 LOAD CURRENT (mA) 100 1630/31 G06 LT1630/LT1631 TYPICAL PERFORMANCE CHARACTERISTICS Minimum Supply Voltage 300 35 VS = 5V, 0V 30 25 20 15 10 5 0 1 4 2 3 TOTAL SUPPLY VOLTAGE (V) 5 1630/31 G07 CHANGE IN OFFSET VOLTAGE (µV) 250 NOISE VOLTAGE (nV/√Hz) 200 150 TA = 25°C 100 50 0 TA = 125°C TA = – 55°C CURRENT NOISE (pA/√Hz) 0.1Hz to 10Hz Output Voltage Noise 80 VS =5V, 0V VCM = VS /2 OUTPUT VOLTAGE (200nV/DIV) GAIN BANDWIDTH (MHz) VOLTAGE GAIN (dB) TIME (1s/DIV) 1630/31 G25 CMRR vs Frequency 120 COMMON MODE REJECTION RATIO (dB) POWER SUPPLY REJECTION RATIO (dB) 110 100 90 80 70 60 50 40 30 20 1k 10k 100k 1M FREQUENCY (Hz) 10M 1630/31 G12 VS = ± 15V 70 60 50 40 30 20 10 0 1k 10k POSITIVE SUPPLY CHANNEL SEPARATION (dB) VS = 5V, 0V UW Noise Voltage Spectrum 10 9 8 7 6 5 4 3 2 1 0 1 10 100 FREQUENCY (Hz) 1000 11630/31 G09 Current Noise Spectrum VS = 5V, 0V VCM = 2.5V PNP ACTIVE VCM = 4.25V NPN ACTIVE VCM = 4.25V NPN ACTIVE VCM = 2.5V PNP ACTIVE 1 10 100 FREQUENCY (Hz) 1000 1630/31 G10 Gain and Phase vs Frequency 180 135 PHASE 90 45 0 GAIN –45 –90 –135 RL = 1k VS = 3V, 0V VS = ± 15V 0.1 1 10 FREQUENCY (MHz) –180 –225 –270 100 1630/31 G11 Gain Bandwidth and Phase Margin vs Supply Voltage 50 45 40 35 30 25 20 15 10 5 0 0 5 15 20 25 10 TOTAL SUPPLY VOLTAGE (V) PHASE MARGIN GAIN BANDWIDTH VCM = VS /2 100 90 80 PHASE MARGIN (DEG) 70 60 50 40 30 20 10 0 30 70 60 50 40 30 20 10 0 –10 –20 0.01 PHASE SHIFT (DEG) 1630/31 G14 PSRR vs Frequency 100 90 80 VS = ±15V –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 Channel Separation vs Frequency NEGATIVE SUPPLY 100k 1M FREQUENCY (Hz) 10M 1630/31 G13 –140 10 100 1k 10k FREQUENCY (Hz) 100k 1M 1630/31 G15 9 LT1630/LT1631 TYPICAL PERFORMANCE CHARACTERISTICS Capacitive Load Handling 60 50 OVERSHOOT (%) 40 30 20 10 0 1 10 100 CAPACITIVE LOAD (pF) 1000 1630/31 G16 VS = 5V, 0V AV = 1 RL = 1k SLEW RATE (V/µs) 12 11 OUTPUT STEP (V) Open-Loop Gain 20 15 VS = ±15V INPUT VOLTAGE (µV) RL = 1k 5 0 –5 –10 –15 – 20 0 5 –20 –15 –10 – 5 10 OUTPUT VOLTAGE (V) 20 RL = 10k INPUT VOLTAGE (µV) INPUT VOLTAGE (µV) 10 Warm-Up Drift vs Time 40 CHANGE IN OFFSET VOLTAGE (µV) 0 –40 –80 OUTPUT VOLTAGE SWING (VP-P) S8 PACKAGE VS = 5V, 0V N8 PACKAGE VS = 5V, 0V LT1631CS VS = 5V, 0V N8 PACKAGE VS = ±15V S8 PACKAGE VS = ±15V LT1631CS VS = ±15V 3 VS = 5V, 0V AV = 1 THD + NOISE (%) –120 –160 –200 0 20 40 60 80 100 120 140 160 TIME AFTER POWER-UP (SEC) 1630/31 G22 10 UW 15 1630/31 G19 Slew Rate vs Supply Voltage 14 13 VOUT = 80% OF VS AV = – 1 RISING EDGE 10 8 6 4 2 0 –2 –4 –6 –8 Output Step vs Settling Time to 0.01% VS = ±15V NONINVERTING INVERTING FALLING EDGE 10 9 8 NONINVERTING INVERTING –10 0 4 8 12 16 20 24 28 TOTAL SUPPLY VOLTAGE (V) 32 0 0.25 1.00 0.50 0.75 SETTLING TIME (µs) 1.25 1.50 1630/31 G17 1630/31 G18 Open-Loop Gain 8 VS = 5V, 0V 6 4 2 RL = 10k 0 RL = 1k –2 –4 –6 –8 0 1 4 3 OUTPUT VOLTAGE (V) 2 5 6 150 100 50 0 –50 200 Open-Loop Gain VS = ± 15V RL = 100Ω –100 –150 –200 –5 –4 –3 –2 –1 0 1 2 3 4 OUTPUT VOLTAGE (V) 5 6 7 1630/31 G20 1630/31 G21 Maximum Undistorted Output Signal vs Frequency 5 VS = 5V, 0V AV = – 1 1 Total Harmonic Distortion + Noise vs Frequency VIN = 2VP-P RL = 10k 0.1 4 0.01 VS = 3V, 0V AV = 1 VS = 5V, 0V AND 3V, 0V AV = – 1 VS = 5V, 0V AV = 1 2 1 0.001 0 1 10 100 FREQUENCY (kHz) 1000 1630/31 G24 0.0001 0.1 10 1 FREQUENCY (kHz) 100 163031 G23 LT1630/LT1631 TYPICAL PERFORMANCE CHARACTERISTICS Harmonic Distortion vs Frequency 0 VS = 5V, 0V AV = 1 VIN = 2VP-P RL = 150Ω RL = 1k HARMONIC DISTORTION (dBc) –20 –40 2ND 3RD –80 2ND 3RD –60 –100 100 200 500 FREQUENCY (kHz) Harmonic Distortion vs Frequency 0 VS = 5V, 0V AV = – 1 VIN = 2VP-P RL = 150Ω RL = 1k 2ND HARMONIC DISTORTION (dBc) –20 –40 –60 3RD –80 3RD 2ND –100 100 200 500 FREQUENCY (kHz) APPLICATIONS INFORMATION Rail-to-Rail Input and Output The LT1630/LT1631 are fully functional for an input and output signal range from the negative supply to the positive supply. Figure 1 shows a simplified schematic of the amplifier. The input stage consists of two differential amplifiers, a PNP stage Q1/Q2 and an NPN stage Q3/Q4 that are active over different ranges of input common mode voltage. The PNP differential input pair is active for input common mode voltages VCM between the negative supply to approximately 1.4V below the positive supply. As VCM moves closer toward the positive supply, the transistor Q5 will steer the tail current I1 to the current mirror Q6/Q7, activating the NPN differential pair and the PNP pair becomes inactive for the rest of the input common mode range up to the positive supply. The output is configured with a pair of complementary common emitter stages Q14/Q15 that enables the output to swing from rail to rail. These devices are fabricated on Linear Technology’s proprietary complementary bipolar process to ensure similar DC and AC characteristics. Capacitors C1 and C2 form local feedback loops that lower the output impedance at high frequencies. U W UW 5V Small-Signal Response 5V Large-Signal Response VS = 5V, 0V AV = 1 RL = 1k 1000 1630/31 G30 1000 1630/31 G26 VS = 5V, 0V AV = 1 RL = 1k 1630/31 G27 ± 15V Small-Signal Response ± 15V Large-Signal Response VS = ±15V AV = 1 RL = 1k 1000 1630/31 G31 1000 1630/31 G28 VS = ±15V AV = 1 RL = 1k 1630/31 G29 U U 11 LT1630/LT1631 APPLICATIONS INFORMATION V+ R3 R4 R5 R6 + IN 225Ω D5 D6 Q4 D1 Q5 D2 VBIAS R7 – IN 225Ω Q3 Q7 V– Q6 R1 R2 Q14 1630/31 F01 Figure 1. LT1630 Simplified Schematic Diagram Power Dissipation The LT1630/LT1631 amplifiers combine high speed and large output current drive in a small package. Because the amplifiers operate over a very wide supply range, it is possible to exceed the maximum junction temperature of 150°C in plastic packages under certain conditions. Junction temperature TJ is calculated from the ambient temperature TA and power dissipation PD as follows: LT1630CN8: TJ = TA + (PD • 130°C/W) LT1630CS8: TJ = TA + (PD • 190°C/W) LT1631CS: TJ = TA + (PD • 150°C/W) The power dissipation in the IC is the function of the supply voltage, output voltage and load resistance. For a given supply voltage, the worst-case power dissipation PDMAX occurs at the maximum supply current and when the output voltage is at half of either supply voltage (or the maximum swing if less than 1/2 supply voltage). Therefore PDMAX is given by: PDMAX = (VS • ISMAX) + (VS/2)2/RL 12 U W U U + I1 Q11 Q12 Q13 Q15 + I2 V– Q1 D3 Q9 D4 Q8 BUFFER AND OUTPUT BIAS C1 Q2 CC C2 OUT To ensure that the LT1630/LT1631 are used properly, calculate the worst-case power dissipation, get the thermal resistance for a chosen package and its maximum junction temperature to derive the maximum ambient temperature. Example: An LT1630CS8 operating on ±15V supplies and driving a 500Ω, the worst-case power dissipation per amplifier is given by: PDMAX = (30V • 4.75mA) + (15V – 7.5V)(7.5/500) = 0.143 + 0.113 = 0.256W If both amplifiers are loaded simultaneously, then the total power dissipation is 0.512W. The SO-8 package has a junction-to-ambient thermal resistance of 190°C/W in still air. Therefore, the maximum ambient temperature that the part is allowed to operate is: TA = TJ – (PDMAX • 190°C/W) TA = 150°C – (0.512W • 190°C/W) = 53°C For a higher operating temperature, lower the supply voltage or use the DIP package part. LT1630/LT1631 APPLICATIONS INFORMATION Input Offset Voltage The offset voltage changes depending upon which input stage is active, and the maximum offset voltages are trimmed to less than 525µV. To maintain the precision characteristics of the amplifier, the change of VOS over the entire input common mode range (CMRR) is guaranteed to be less than 525µV on a single 5V supply. Input Bias Current The input bias current polarity depends on the input common mode voltage. When the PNP differential pair is active, the input bias currents flow out of the input pins. They flow in the opposite direction when the NPN input stage is active. The offset voltage error due to input bias currents can be minimized by equalizing the noninverting and inverting input source impedance. Output The outputs of the LT1630/LT1631 can deliver large load currents; the short-circuit current limit is 70mA. Take care to keep the junction temperature of the IC below the absolute maximum rating of 150°C (refer to the Power Dissipation section). The output of these amplifiers have reverse-biased diodes to each supply. If the output is forced beyond either supply, unlimited current will flow through these diodes. If the current is transient and limited to several hundred mA, no damage to the part will occur. Overdrive Protection To prevent the output from reversing polarity when the input voltage exceeds the power supplies, two pairs of crossing diodes D1 to D4 are employed. When the input voltage exceeds either power supply by approximately 700mV, D1/D2 or D3/D4 will turn on, forcing the output to the proper polarity. For this phase reversal protection to work properly, the input current must be limited to less than 5mA. If the amplifier is to be severely overdriven, an external resistor should be used to limit the overdrive current. The LT1630/LT1631’s input stages are protected against large differential input voltages by a pair of back-to-back diodes D5/D6. When a differential voltage of more than 0.7V is applied to the inputs, these diodes will turn on, preventing the emitter-base breakdown of the input transistors. The current in D5/D6 should be limited to less than 10mA. Internal 225Ω resistors R6 and R7 will limit the input current for differential input signals of 4.5V or less. For larger input levels, a resistor in series with either or both inputs should be used to limit the current. Worst-case differential input voltage usually occurs when the output is shorted to ground. In addition, the amplifier is protected against ESD strikes up to 3kV on all pins. Capacitive Load The LT1630/LT1631 are wideband amplifiers that can drive capacitive loads up to 200pF on ± 15V supplies in a unity-gain configuration. On a 3V supply, the capacitive load should be kept to less than 100pF. When there is a need to drive larger capacitive loads, a resistor of 20Ω to 50Ω should be connected between the output and the capacitive load. The feedback should still be taken from the output so that the resistor isolates the capacitive load to ensure stability. Feedback Components The low input bias currents of the LT1630/LT1631 make it possible to use the high value feedback resistors to set the gain. However, care must be taken to ensure that the pole formed by the feedback resistors and the total capacitance at the inverting input does not degrade stability. For instance, the LT1630/LT1631 in a noninverting gain of 2, set with two 20k resistors, will probably oscillate with 10pF total input capacitance (5pF input capacitance and 5pF board capacitance). The amplifier has a 5MHz crossing frequency and a 52° phase margin at 6dB of gain. The feedback resistors and the total input capacitance form a pole at 1.6MHz that induces a phase shift of 72° at 5MHz! The solution is simple: either lower the value of the resistors or add a feedback capacitor of 10pF or more. U W U U 13 LT1630/LT1631 TYPICAL APPLICATIONS Single Supply, 40dB Gain, 350kHz Instrumentation Amplifier An instrumentation amplifier with a rail-to-rail output swing, operating from a 3V supply can be constructed with the LT1630 as shown in Figure 2. The amplifier has a nominal gain of 100, which can be adjusted with resistor R5. The DC output level is set by the difference of the two inputs multiplied by the gain of 100. Common mode range can be calculated by the equations shown with Figure 2. For example, the common mode range is from 0.15V to 2.65V if the output is set at one half of the 3V supply. The common mode rejection is greater than 110dB at 100Hz when trimmed with resistor R1. The amplifier has a bandwidth of 355kHz as shown in Figure 3. R2 2k R1 20k VS R3 2k R5 432 Ω R4 20k VI N R1 500 Ω – VI N 1630/31 F02 R10 10k C2 4 . µF 7 R9 1k R11 10k ( ) WHERE VS IS THE SUPPLY VOLTAGE Figure 2. Single Supply, 40dB Gain Instrumentation Amplifier 50 40 30 20 GAIN (VOUT/VIN)(dB) Figure 4. Tunable Q Notch Filter DIFFERENTIAL INPUT 40 VOLTAGE GAIN (dB) 10 0 –10 –20 –30 –40 –50 –60 –70 100 1k 10k 100k FREQUENCY (Hz) VS = 3V AV = 100 1M 10M 1630/31 F03 20 INCREASING R8 0 DECREASING R8 COMMON MODE INPUT –20 –40 0 20 40 60 80 100 120 140 160 180 200 FREQUENCY (kHz) 13630/31 F05 Figure 3. Frequency Response Figure 5. Frequency Response 14 + BW = 355kHz R4  R2 R3 + R2  AV = 1+ + = 100 R3  R1 R5    − + VOUT =  VIN − VIN  • AV   L O W E R L T MOMMON MODE INPUT VOLTAGE IC I  VOUT  R2  1.0 VCML =  + 0.1V    A V  R5  1.1   UPPER LIMIT COMMON MODE INPUT VOLTAGE  V  R2  1.0 VCMH =  OUT  + VS − 0.15V     A V  R5  1.1 5V – + + VI N – OUT1 1/2 LT1630 U Tunable Q Notch Filter A single supply, tunable Q notch filter as shown in Figure 4 is built with LT1630 to maximize the output swing. The filter has a gain of 2, and the notch frequency (fO) is set by the values of R and C. The resistors R10 and R11 set up the DC level at the output. The Q factor can be adjusted by varying the value of R8. The higher value of R8 will decrease Q as depicted in Figure 5, because the output induces less of feedback to amplifier A2. The value of R7 should be equal or greater than R9 to prevent oscillation. If R8 is a short and R9 is larger than R7, then the positive feedback from the output will create phase inversion at the output of amplifier A2, which will lead to oscillation. C 1000pF C1 2 . 2F µ R 1.62k 5V + R 1.62k C 1000pF A1 1/2 LT1630 VO U T + – 1/2 LT1630 VO U T R2 1k – R6 R5 1k 1k C5 4 . 7F µ A2 1/2 LT1630 R8 5k R7 1k 1630/31 F04 fO = 98kHz 1 fO = 2πRC VO(DC) = AV = 2 R11 + R10 (5V)(R11) = 2.5V LT1630/LT1631 PACKAGE DESCRIPTION U Dimensions in inches (millimeters) unless otherwise noted. N8 Package 8-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 0.400* (10.160) MAX 8 7 6 5 0.300 – 0.325 (7.620 – 8.255) 0.045 – 0.065 (1.143 – 1.651) 0.130 ± 0.005 (3.302 ± 0.127) 0.009 – 0.015 (0.229 – 0.381) 0.065 (1.651) TYP 0.125 (3.175) 0.020 MIN (0.508) MIN 0.018 ± 0.003 (0.457 ± 0.076) 0.255 ± 0.015* (6.477 ± 0.381) ( +0.035 0.325 –0.015 +0.889 8.255 –0.381 ) 1 2 3 4 N8 1197 0.100 ± 0.010 (2.540 ± 0.254) *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) S8 Package 8-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.189 – 0.197* (4.801 – 5.004) 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0°– 8° TYP 0.053 – 0.069 (1.346 – 1.752) 8 0.004 – 0.010 (0.101 – 0.254) 0.228 – 0.244 (5.791 – 6.197) 0.150 – 0.157** (3.810 – 3.988) 7 6 5 0.016 – 0.050 0.406 – 1.270 0.014 – 0.019 (0.355 – 0.483) *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 0.050 (1.270) TYP 1 2 3 4 SO8 0996 S Package 14-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.337 – 0.344* (8.560 – 8.738) 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.053 – 0.069 (1.346 – 1.752) 0° – 8° TYP 14 0.004 – 0.010 (0.101 – 0.254) 0.228 – 0.244 (5.791 – 6.197) 0.150 – 0.157** (3.810 – 3.988) 13 12 11 10 9 8 0.016 – 0.050 0.406 – 1.270 0.014 – 0.019 (0.355 – 0.483) 0.050 (1.270) TYP *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 1 2 3 4 5 6 7 S14 0695 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 15 LT1630/LT1631 TYPICAL APPLICATIONS RF Amplifier Control Biasing and DC Restoration Taking advantage of the rail-to-rail input and output, and the large output current capability of the LT1630, the circuit, shown in Figure 6, provides precise bias currents for the RF amplifiers and restores DC output level. To ensure optimum performance of an RF amplifier, its bias point must be accurate and stable over the operating temperature range. The op amp A1 combined with Q1, Q2, R1, R2 and R3 establishes two current sources of 21.5mA to bias RF1 and RF2 amplifiers. The current of Q1 is determined by the voltage across R2 over R1, which is replicated in Q2. These current sources are stable and precise over temperature and have a low dissipated power due to a low voltage drop between their terminals. The amplifier A2 is used to restore the DC level at the output. With a large output current of the LT1630, the output can be set at 1.5VDC on 5V supply and 50Ω load. This circuit has a 3dB bandwidth from 2MHz to 2GHz and a power gain of 25dB. R2 453Ω 5V 5V R1 10Ω R4 10Ω C1 0.01µF + R3 10k L1 220µH C2 1500pF HP-MSA0785 VIN L3 3.9µH R5 50Ω Figure 6. RF Amplifier Control Biasing and DC Restoration RELATED PARTS PART NUMBER LT1211/LT1212 LT1213/LT1214 LT1215/LT1216 LT1498/LT1499 LT1632/LT1633 DESCRIPTON Dual/Quad 14MHz, 7V/µs, Single Supply Precision Op Amps Dual/Quad 28MHz, 12V/µs, Single Supply Precision Op Amps Dual/Quad 23MHz, 50V/µs, Single Supply Precision Op Amps Dual/Quad 10MHz, 6V/µs Rail-to-Rail Input and Output C-LoadTM Op Amps Dual/Quad 45MHz, 45V/µs Rail-to-Rail Input and Output Op Amps COMMENTS Input Common Mode Includes Ground, 275µV VOS(MAX), 6µV/°C Max Drift, Max Supply Current 1.8mA per Op Amp Input Common Mode Includes Ground, 275µV VOS(MAX), 6µV/°C Max Drift, Max Supply Current 3.5mA per Op Amp Input Common Mode Includes Ground, 450µV VOS(MAX), 6µV/°C Max Drift, Max Supply Current 6.6mA per Op Amp High DC Accuracy, 475µV VOS(MAX), 4µV/°C Max Drift, Max Supply Current 2.2mA per Amp High DC Accuracy, 1.35mV VOS(MAX), 70mA Output Current, Max Supply Current 5.2mA per Amp C-Load is a trademark of Linear Technology Corporation. 16 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408)432-1900 q FAX: (408) 434-0507 q www.linear-tech.com + – U A1 1/2 LT1630 Q1 2N3906 Q2 2N3906 + C5 0.01µF L2 220µH HP-MSA0785 + C6 0.01µF C3 1500pF C4 1500pF VOUT L4 3.9µH RF1 RF2 + A2 1/2 LT1630 1630/31 F06 – 16301f LT/TP 0998 4K • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1998