LT1630/LT1631 30MHz, 10V/µs, Dual/Quad Rail-to-Rail Input and Output Precision Op Amps Description Features n n n n n n n n n n n n n n n 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 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. Applications n n n n n Active Filters Rail-to-Rail Buffer Amplifiers Driving A/D Converters Low Voltage Signal Processing Battery-Powered Systems L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and C-Load is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. 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. Typical Application Frequency Response 10 Single Supply, 400kHz, 4th Order Butterworth Filter 0 –10 VIN 2.32k 6.65k 220pF VS/2 –20 47pF – 1/2 LT1630 + 2.74k 2.74k GAIN (dB) 2.32k 22pF 5.62k – 470pF 1/2 LT1630 + VOUT –30 –40 –50 –60 –70 1630/31 TA01 –80 –90 0.1k VS = 3V, 0V VIN = 2.5VP-P 1k 10k 100k FREQUENCY (Hz) 1M 10M 1630/31 TA02 16301fa LT1630/LT1631 Absolute Maximum Ratings (Note 1) Total Supply Voltage (V+ to V–)................................ 36V Input Current........................................................ ±10mA Output Short-Circuit Duration (Note 2)......... Continuous Operating Temperature Range C-Grade/I-Grade.................................. –40°C to 85°C H-Grade.............................................. –40°C to 125°C Specified Temperature Range (Note 4)........................... C-Grade/I-Grade.................................. –40°C to 85°C H-Grade.............................................. –40°C to 125°C Junction Temperature .......................................... 150°C Storage Temperature Range................... –65°C to 150°C Lead Temperature (Soldering, 10 sec)................... 300°C Pin Configuration TOP VIEW TOP VIEW OUT A 1 –IN A 2 +IN A 3 A V– 4 N8 PACKAGE 8-LEAD PDIP B 14 OUT D OUTA 1 V+ –IN A 2 7 OUT B +IN A 3 6 –IN B V+ 4 5 +IN B +IN B 5 8 –IN B 6 S8 PACKAGE 8-LEAD PLASTIC SO OUT B 7 TJMAX = 150°C, θJA = 130°C/W (N8) TJMAX = 150°C, θJA = 190°C/W (S8) A D 13 –IN D 12 +IN D 11 V– B C 10 +IN C 9 –IN C 8 OUT C S PACKAGE 14-LEAD PLASTIC SO TJMAX = 150°C, θJA = 150°C/W Order Information LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT1630CN8#PBF LT1630CN8#TRPBF LT1630CN8 8-Lead PDIP –40°C to 85°C LT1630CS8#PBF LT1630CS8#TRPBF 1630 8-Lead Plastic SO –40°C to 85°C LT1630IN8#PBF LT1630IN8#TRPBF LT1630IN8 8-Lead PDIP –40°C to 85°C LT1630IS8#PBF LT1630IS8#TRPBF 1630I 8-Lead Plastic SO –40°C to 85°C LT1630HS8#PBF LT1630HS8#TRPBF 1630H 8-Lead Plastic SO –40°C to 125°C LT1631CS#PBF LT1631CS#TRPBF LT1631CS 14-Lead Plastic SO –40°C to 85°C LT1631IS#PBF LT1631IS#TRPBF LT1631IS 14-Lead Plastic SO –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 16301fa LT1630/LT1631 Electrical Characteristics otherwise noted. TA = 25°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless SYMBOL PARAMETER CONDITIONS TYP MAX UNITS VOS Input Offset Voltage VCM = V+ VCM = V– 150 150 525 525 µV µV ∆VOS Input Offset Shift VCM = V– to V+ 150 525 µV 200 950 µV 540 –540 1000 0 nA nA 1080 2000 nA 25 25 300 300 nA nA 20 20 150 150 nA nA 40 300 nA Input Offset Voltage Match (Channel-to-Channel) VCM = V–, V+ (Note 5) IOS Input Offset Current ∆IOS Input Offset Current Shift VCM = V+ VCM = V– VCM = V– to V+ VCM = V+ (Note 5) VCM = V– (Note 5) VCM = V+ VCM = V– VCM = V– to V+ IB Input Bias Current ∆IB Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) MIN 0 –1000 Input Noise Voltage 0.1Hz to 10Hz en Input Noise Voltage Density f = 1kHz 6 nV/√Hz in Input Noise Current Density f = 1kHz 0.9 pA/√Hz CIN Input Capacitance AVOL Large-Signal Voltage Gain VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k 500 400 3500 2000 CMRR Common Mode Rejection Ratio VS = 5V, VCM = V– to V+ VS = 3V, VCM = V– to V+ 79 75 90 86 dB dB CMRR Match (Channel-to-Channel) (Note 5) VS = 5V, VCM = V– to V+ VS = 3V, VCM = V– to V+ 72 67 96 88 dB dB Power Supply Rejection Ratio VS = 2.7V to 12V, VCM = VO = 0.5V 87 105 dB PSRR Match (Channel-to-Channel) (Note 5) VS = 2.7V to 12V, VCM = VO = 0.5V 80 107 dB PSRR 300 nVP-P 5 pF V/mV V/mV Minimum Supply Voltage (Note 9) VCM = VO = 0.5V 2.6 2.7 VOL Output Voltage Swing Low (Note 6) No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V 14 31 600 500 30 60 1200 1000 mV mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 0.5mA ISOURCE = 20mA, VS = 5V ISOURCE = 15mA, VS = 3V 15 42 900 680 40 80 1800 1400 mV mV mV mV ISC Short-Circuit Current VS = 5V VS = 3V ±20 ±15 ±41 ±30 3.5 V mA mA IS Supply Current per Amplifier GBW Gain-Bandwidth Product (Note 7) f = 100kHz 15 30 4.4 MHz mA SR Slew Rate (Note 8) VS = 5V, AV = –1, RL = Open, VO = 4V VS = 3V, AV = –1, RL = Open 4.6 4.2 9.2 8.5 V/µs V/µs tS Settling Time VS = 5V, AV = 1, RL = 1k, 0.01%, VSTEP = 2V 520 ns 16301fa LT1630/LT1631 Electrical Characteristics The l denotes the specifications which apply over the full operating temperature range of 0°C < TA < 70°C. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = V+ – 0.1V VCM = V– + 0.2V VOS TC Input Offset Voltage Drift (Note 3) ∆VOS Input Offset Voltage Shift TYP MAX UNITS l l 175 175 700 700 µV µV VCM = V+ – 0.1V l l 2.5 1 5.5 3.5 µV/°C µV/°C VCM = V– + 0.2V to V+ – 0.1V l 175 750 µV l 200 1200 µV 585 –585 1100 0 nA nA l 1170 2200 nA l l 25 25 340 340 nA nA l l 20 20 170 170 nA nA l 40 340 nA = V– + 0.2V, V+ – 0.1V (Note 5) Input Offset Voltage Match (Channel-to-Channel) VCM IB Input Bias Current ∆IB Input Bias Current Shift VCM = V+ – 0.1V VCM = V– + 0.2V 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 Input Bias Current Match (Channel-to-Channel) IOS Input Offset Current ∆IOS Input Offset Current Shift AVOL Large-Signal Voltage Gain CMRR MIN l l 0 –1100 VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k l l 450 350 3500 2000 Common Mode Rejection Ratio VS = 5V, VCM = V– + 0.2V to V+ – 0.1V VS = 3V, VCM = V– + 0.2V to V+ – 0.1V l l 75 71 89 83 dB dB CMRR Match (Channel-to-Channel) (Note 5) VS = 5V, VCM = V– + 0.2V to V+ – 0.1V VS = 3V, VCM = V– + 0.2V to V+ – 0.1V l l 70 65 90 85 dB dB Power Supply Rejection Ratio VS = 3V to 12V, VCM = VO = 0.5V l 82 101 dB PSRR Match (Channel-to-Channel) (Note 5) VS = 3V to 12V, VCM = VO = 0.5V l 78 102 dB Minimum Supply Voltage (Note 9) VCM = VO = 0.5V l 2.6 2.7 VOL Output Voltage Swing Low (Note 6) No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V l l l l 17 36 700 560 40 80 1400 1200 mV mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V l l l l 16 50 820 550 40 100 1600 1100 mV mV mV mV ISC Short-Circuit Current VS = 5V VS = 3V l l IS Supply Current per Amplifier PSRR ±18 ±13 ±36 ±25 4.0 l V/mV V/mV V mA mA 5.1 mA GBW Gain-Bandwidth Product (Note 7) f = 100kHz l 14 28 MHz SR Slew Rate (Note 8) VS = 5V, AV = –1, RL = Open, VO = 4V VS = 3V, AV = –1, RL = Open l l 4.2 3.9 8.3 7.7 V/µs V/µs 16301fa LT1630/LT1631 Electrical Characteristics The l denotes the specifications which apply over the full operating temperature range of –40°C < TA < 85°C. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = V+ – 0.1V VCM = V– + 0.2V VOS TC Input Offset Voltage Drift (Note 3) ∆VOS Input Offset Voltage Shift TYP MAX UNITS l l 250 250 775 775 µV µV VCM = V+ – 0.1V l l 2.5 1 5.5 3.5 µV/°C µV/°C VCM = V– + 0.2V to V+ – 0.1V l 200 750 µV = V– + 0.2V, V+ (Note 5) l 210 1500 µV 650 –650 1300 0 nA nA l 1300 2600 nA l l 25 25 390 390 nA nA l l 25 25 195 195 nA nA l 50 390 nA Input Offset Voltage Match (Channel-to-Channel) VCM IB Input Bias Current ∆IB Input Bias Current Shift VCM = V+ – 0.1V VCM = V– + 0.2V 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 Input Bias Current Match (Channel-to-Channel) IOS Input Offset Current ∆IOS Input Offset Current Shift AVOL Large-Signal Voltage Gain CMRR MIN l l 0 –1300 VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k l l 400 300 3500 1800 Common Mode Rejection Ratio VS = 5V, VCM = V– + 0.2V to V+ – 0.1V VS = 3V, VCM = V– + 0.2V to V+ – 0.1V l l 75 71 87 83 dB dB CMRR Match (Channel-to-Channel) (Note 5) VS = 5V, VCM = V– + 0.2V to V+ – 0.1V VS = 3V, VCM = V– + 0.2V to V+ – 0.1V l l 69 65 89 85 dB dB Power Supply Rejection Ratio VS = 3V to 12V, VCM = VO = 0.5V l 82 98 dB PSRR Match (Channel-to-Channel) (Note 5) VS = 3V to 12V, VCM = VO = 0.5V l 78 102 dB Minimum Supply Voltage (Note 9) VCM = VO = 0.5V l 2.6 2.7 VOL Output Voltage Swing Low (Note 6) No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V l l l l 18 38 730 580 40 80 1500 1200 mV mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V l l l l 15 55 860 580 40 110 1700 1200 mV mV mV mV ISC Short-Circuit Current VS = 5V VS = 3V l l IS Supply Current per Amplifier PSRR ±17 ±12 ±34 ±24 4.1 l V/mV V/mV V mA mA 5.2 mA GBW Gain-Bandwidth Product (Note 7) f = 100kHz l 14 28 MHz SR Slew Rate (Note 8) VS = 5V, AV = –1, RL = Open, VO = 4V VS = 3V, AV = –1, RL = Open l l 3.5 3.3 7 6.5 V/µs V/µs 16301fa LT1630/LT1631 Electrical Characteristics The l denotes the specifications which apply over the full operating temperature range of –40°C < TA < 125°C. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = V+ – 0.1V VCM = V– + 0.2V VOS TC Input Offset Voltage Drift (Note 3) ∆VOS Input Offset Voltage Shift TYP MAX UNITS l l 345 345 950 950 µV µV VCM = V+ – 0.1V l l 2.5 1 5.5 3.5 µV/°C µV/°C VCM = V– + 0.2V to V+ – 0.1V l 200 750 µV = V– + 0.2V, V+ (Note 5) l 210 1500 µV 650 –650 1300 0 nA nA l 1300 2600 nA l l 25 25 390 390 nA nA l l 25 25 195 195 nA nA l 50 390 nA Input Offset Voltage Match (Channel-to-Channel) VCM IB Input Bias Current ∆IB Input Bias Current Shift VCM = V+ – 0.1V VCM = V– + 0.2V 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 Input Bias Current Match (Channel-to-Channel) IOS Input Offset Current ∆IOS Input Offset Current Shift AVOL Large-Signal Voltage Gain CMRR MIN l l 0 –1300 VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k l l 200 150 3100 1625 Common Mode Rejection Ratio VS = 5V, VCM = V– + 0.2V to V+ – 0.1V VS = 3V, VCM = V– + 0.2V to V+ – 0.1V l l 72 69 87 83 dB dB CMRR Match (Channel-to-Channel) (Note 5) VS = 5V, VCM = V– + 0.2V to V+ – 0.1V VS = 3V, VCM = V– + 0.2V to V+ – 0.1V l l 67 63 89 85 dB dB Power Supply Rejection Ratio VS = 3V to 12V, VCM = VO = 0.5V l 82 98 dB PSRR Match (Channel-to-Channel) (Note 5) VS = 3V to 12V, VCM = VO = 0.5V l 78 102 dB Minimum Supply Voltage (Note 9) VCM = VO = 0.5V l 2.6 2.7 VOL Output Voltage Swing Low (Note 6) No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V l l l l 18 38 730 580 40 100 1600 1300 mV mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V l l l l 15 55 860 580 40 120 1800 1300 mV mV mV mV ISC Short-Circuit Current VS = 5V VS = 3V l l IS Supply Current per Amplifier PSRR ±17 ±12 ±34 ±24 4.1 l V/mV V/mV V mA mA 5.6 mA GBW Gain-Bandwidth Product (Note 7) f = 100kHz l 13 28 MHz SR Slew Rate (Note 8) VS = 5V, AV = –1, RL = Open, VO = 4V VS = 3V, AV = –1, RL = Open l l 3.5 3.3 7 6.5 V/µs V/µs 16301fa LT1630/LT1631 Electrical Characteristics SYMBOL TA = 25°C, VS = ±15V, VCM = 0V, VOUT = 0V, unless otherwise noted. PARAMETER CONDITIONS Input Offset Voltage IOS Input Offset Current ∆IOS Input Offset Current Shift VCM = V+ VCM = V– VCM = V– to V+ VCM = V–, V+ (Note 5) VCM = V+ VCM = V– VCM = V– to V+ VCM = V+ (Note 5) VCM = V– (Note 5) VCM = V+ VCM = V– VCM = V– to V+ VOS ∆VOS Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) IB Input Bias Current ∆IB Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) MIN 0 –1100 TYP MAX UNITS 220 220 1000 1000 µV µV 150 1000 µV 200 1500 µV 550 –550 1100 0 nA nA 1100 2200 nA 20 20 300 300 nA nA 20 20 150 150 nA nA 40 300 nA Input Noise Voltage 0.1Hz to 10Hz en Input Noise Voltage Density f = 1kHz 300 6 nV/√Hz nVP-P in Input Noise Current Density f = 1kHz 0.9 pA/√Hz CIN Input Capacitance f = 100kHz AVOL Large-Signal Voltage Gain VO = –14.5V to 14.5V, RL = 10k VO = –10V to 10V, RL = 2k 1000 650 5000 3500 V/mV V/mV Channel Separation VO = –10V to 10V, RL = 2k 3 pF 112 134 dB VCM = V– to V+ 89 106 dB CMRR Match (Channel-to-Channel) (Note 5) VCM = V– to V+ 86 110 dB Power Supply Rejection Ratio VS = ±5V to ±15V 87 105 dB PSRR Match (Channel-to-Channel) (Note 5) VS = ±5V to ±15V 82 107 dB VOL Output Voltage Swing Low (Note 6) No Load ISINK = 5mA ISINK = 25mA 16 150 600 35 300 1200 mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISINK = 5mA ISINK = 25mA 15 250 1200 40 500 2400 mV mV mV CMRR PSRR Common Mode Rejection Ratio ISC Short-Circuit Current IS Supply Current per Amplifier ±35 ±70 GBW Gain-Bandwidth Product (Note 7) f = 100kHz 15 30 MHz SR Slew Rate AV = –1, RL = Open, VO = ±10V, Measure at VO = ±5V 5 10 V/µs tS Settling Time 0.01%, VSTEP = 10V, AV = 1, RL = 1k 1.2 µs 4.1 mA 5.0 mA 16301fa LT1630/LT1631 Electrical Characteristics The l denotes the specifications which apply over the full operating temperature range of 0°C < TA < 70°C. VS = ±15V, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = V+ – 0.1V VCM = V– + 0.2V VOS TC Input Offset Voltage Drift (Note 3) ∆VOS Input Offset Voltage Shift TYP MAX UNITS l l 300 300 1250 1250 µV µV VCM = V+ – 0.1V l l 4.5 1.5 7 4 VCM = V– + 0.2V to V+ – 0.1V l 180 1100 µV l 300 2000 µV 600 –600 1200 0 nA nA l 1200 2400 nA l l 30 30 350 350 nA nA l l 25 25 175 175 nA nA l 50 350 nA = V– + 0.2V, V+ – 0.1V (Note 5) Input Offset Voltage Match (Channel-to-Channel) VCM IB Input Bias Current ∆IB Input Bias Current Shift VCM = V+ – 0.1V VCM = V– + 0.2V 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 Input Bias Current Match (Channel-to-Channel) IOS Input Offset Current ∆IOS Input Offset Current Shift AVOL Large-Signal Voltage Gain CMRR MIN l l 0 –1200 VO = –14.5V to 14.5V, RL = 10k VO = –10V to 10V, RL = 2k l l 900 600 Channel Separation VO = –10V to 10V, RL = 2k l Common Mode Rejection Ratio VCM = V– + 0.2V to V+ – 0.1V l = V– + 0.2V to V+ – 0.1V µV/°C µV/°C 6000 4000 V/mV V/mV 112 132 dB 88 104 dB CMRR Match (Channel-to-Channel) (Note 5) VCM l 84 104 dB Power Supply Rejection Ratio VS = ±5V to ±15V l 86 100 dB PSRR Match (Channel-to-Channel) (Note 5) VS = ±5V to ±15V l 80 104 dB VOL Output Voltage Swing Low (Note 6) No Load ISINK = 5mA ISINK = 25mA l l l 19 175 670 45 350 1400 mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 5mA ISOURCE = 25mA l l l 15 300 1400 40 600 2800 mV mV mV ISC Short-Circuit Current l IS Supply Current per Amplifier l GBW Gain-Bandwidth Product (Note 7) f = 100kHz l 14 28 MHz SR Slew Rate AV = –1, RL = Open, VO = ±10V, Measured at VO = ±5V l 4.5 9 V/µs PSRR ±28 ±57 4.6 mA 5.6 mA 16301fa LT1630/LT1631 Electrical Characteristics The l denotes the specifications which apply over the full operating temperature range of –40°C < TA < 85°C. VS = ±15V, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = V+ – 0.1V VCM = V– + 0.2V VOS TC Input Offset Voltage Drift (Note 3) ∆VOS Input Offset Voltage Shift TYP MAX UNITS l l 350 350 1400 1400 µV µV VCM = V+ – 0.1V l l 4.5 1.5 7 4 VCM = V– + 0.2V to V+ – 0.1V l 180 1200 µV l 350 2200 µV 690 –690 1400 0 nA nA l 1380 2800 nA l l 30 30 420 420 nA nA l l 30 30 210 210 nA nA l 60 420 nA = V– + 0.2V, V+ – 0.1V (Note 5) Input Offset Voltage Match (Channel-to-Channel) VCM IB Input Bias Current ∆IB Input Bias Current Shift VCM = V+ – 0.1V VCM = V– + 0.2V 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 Input Bias Current Match (Channel-to-Channel) IOS Input Offset Current ∆IOS Input Offset Current Shift AVOL Large-Signal Voltage Gain CMRR MIN l l 0 –1400 VO = –14.5V to 14.5V, RL = 10k VO = –10V to 10V, RL = 2k l l 700 400 Channel Separation VO = –10V to 10V, RL = 2k l Common Mode Rejection Ratio VCM = V– + 0.2V to V+ – 0.1V l = V– + 0.2V to V+ – 0.1V µV/°C µV/°C 6000 4000 V/mV V/mV 112 132 dB 87 104 dB CMRR Match (Channel-to-Channel) (Note 5) VCM l 84 104 dB Power Supply Rejection Ratio VS = ±5V to ±15V l 84 100 dB PSRR Match (Channel-to-Channel) (Note 5) VS = ±5V to ±15V l 80 100 dB VOL Output Voltage Swing Low (Note 6) No Load ISINK = 5mA ISINK = 25mA l l l 22 180 700 50 350 1400 mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 5mA ISOURCE = 25mA l l l 15 300 1500 40 600 3000 mV mV mV ISC Short-Circuit Current l IS Supply Current per Amplifier l GBW Gain-Bandwidth Product (Note 7) f = 100kHz l 14 27 MHz SR Slew Rate AV = –1, RL = Open, VO = ±10V, Measured at VO = ±5V l 4.2 8.5 V/µs PSRR ±27 ±54 4.8 mA 5.9 mA 16301fa LT1630/LT1631 Electrical Characteristics The l denotes the specifications which apply over the full operating temperature range of –40°C < TA < 125°C. VS = ±15V, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = V+ – 0.1V VCM = V– + 0.2V VOS TC Input Offset Voltage Drift (Note 3) ∆VOS Input Offset Voltage Shift MIN TYP MAX UNITS l l 525 525 1600 1600 µV µV VCM = V+ – 0.1V l l 4.5 1.5 7 4 VCM = V– + 0.2V to V+ – 0.1V l 220 1300 µV l 350 2200 µV 750 –750 1500 0 nA nA l 1380 2800 nA l l 42 42 460 460 nA nA l l 30 30 210 210 nA nA l 60 420 nA = V– + 0.2V, V+ – 0.1V (Note 5) Input Offset Voltage Match (Channel-to-Channel) VCM IB Input Bias Current ∆IB Input Bias Current Shift VCM = V+ – 0.1V VCM = V– + 0.2V 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 Input Bias Current Match (Channel-to-Channel) IOS Input Offset Current ∆IOS Input Offset Current Shift AVOL Large-Signal Voltage Gain CMRR l l 0 –1500 VO = –14.5V to 14.5V, RL = 10k VO = –10V to 10V, RL = 2k l l 700 400 Channel Separation VO = –10V to 10V, RL = 2k l Common Mode Rejection Ratio VCM = V– + 0.2V to V+ – 0.1V l = V– + 0.2V to V+ – 0.1V µV/°C µV/°C 6000 4000 V/mV V/mV 112 132 dB 87 104 dB CMRR Match (Channel-to-Channel) (Note 5) VCM l 84 104 dB Power Supply Rejection Ratio VS = ±5V to ±15V l 84 100 dB PSRR Match (Channel-to-Channel) (Note 5) VS = ±5V to ±15V l 80 100 dB VOL Output Voltage Swing Low (Note 6) No Load ISINK = 5mA ISINK = 25mA l l l 22 180 700 60 400 1500 mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 5mA ISOURCE = 25mA l l l 15 300 1500 50 675 3300 mV mV mV ISC Short-Circuit Current l IS Supply Current per Amplifier l GBW Gain-Bandwidth Product (Note 7) f = 100kHz l 13 27 MHz SR Slew Rate AV = –1, RL = Open, VO = ±10V, Measured at VO = ±5V l 4.2 8.5 V/µs PSRR Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. 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. The LT1630C/LT1631C and are designed, characterized and expected to meet specified performance from –40°C to 85°C but are not tested or QA sampled at these temperatures. The LT1630I/LT1631I are guaranteed to meet specified performance from –40°C to 85°C. The LT1630H is guaranteed to meet specified performance from –40°C to 125°C. ±27 ±54 4.8 mA 6.4 mA 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. 16301fa 10 LT1630/LT1631 Typical Performance Characteristics VOS Distribution, VCM = 0V (PNP Stage) VOS Distribution, VCM = 5V (NPN Stage) 50 50 VS = 5V, 0V VCM = 0V VS = 5V, 0V VCM = 5V 30 20 10 40 30 20 –300 100 300 –100 INPUT OFFSET VOLTAGE (µV) 0 –500 500 –300 100 300 –100 INPUT OFFSET VOLTAGE (µV) 600 TA = 25°C 4.0 3.5 3.0 TA = –55°C 2.5 2.0 0 4 8 12 16 20 24 28 TOTAL SUPPLY VOTAGE (V) 4.5 4.0 3.5 VS = 5V, 0V 3.0 2.5 2.0 1630/31 G01 –0.6 –0.8 TA = 125°C –600 TA = 25°C 100 125 –1000 VS = 5V, 0V VCM = 5V VS = ±15V VCM = 15V VS = ±15V VCM = –15V 1630/31 G04 –2 –1 0 2 3 4 5 1 COMMON MODE VOLTAGE (V) 6 Output Saturation Voltage vs Load Current (Output High) 10 VS = 5V, 0V 1 TA = 125°C 0.1 TA = 25°C TA = –55°C VS = 5V, 0V VCM = 0V –1.0 –50 –35 –20 –5 10 25 40 55 70 85 100 TEMPERATURE (°C) TA = –55°C 1630/31 G03 VS = 5V, 0V SATURATION VOLTAGE (V) INPUT BIAS CURRENT (µA) –0.4 –400 10 0 –0.2 –200 Output Saturation Voltage vs Load Current (Output Low) 1.0 0.2 0 1630/31 G02 Input Bias Current vs Temperature 0.4 200 –800 1.5 1.0 25 50 75 –75 –50 –25 0 TEMPERATURE (°C) 32 36 VS = 5V, 0V 400 SATURATION VOLTAGE (V) 4.5 VS = ±15V INPUT BIAS CURRENT (nA) SUPPLY CURRENT PER AMPLIFIER (mA) SUPPLY CURRENT PER AMPLIFIER (mA) TA = 125°C 500 Input Bias Current vs Common Mode Voltage 5.0 5.0 –300 100 300 –100 INPUT OFFSET VOLTAGE (µV) 1630/31 G34 Supply Current vs Temperature 5.5 0.6 0 –500 500 1630/31 G33 Supply Current vs Supply Voltage 0.8 20 10 1630/31 G32 1.5 30 10 0 –500 ∆VOS Shift for VCM = 0V to 5V VS = 5V, 0V PERCENT OF UNITS (%) 40 PERCENT OF UNITS (%) PERCENT OF UNITS (%) 40 50 0.01 0.01 0.1 1 10 LOAD CURRENT (mA) 100 1630/31 G05 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 G06 16301fa 11 LT1630/LT1631 Typical Performance Characteristics Minimum Supply Voltage Noise Voltage Spectrum 35 Current Noise Spectrum VS = 5V, 0V 200 150 TA = 25°C TA = 125°C TA = –55°C 20 15 10 50 5 0 0 1 4 2 3 TOTAL SUPPLY VOLTAGE (V) 5 VCM = 4.25V NPN ACTIVE 8 7 6 5 4 2 10 100 FREQUENCY (Hz) 1 0 VCM = 2.5V PNP ACTIVE 1000 1 10 100 FREQUENCY (Hz) 1630/31 G10 Gain Bandwidth and Phase Margin vs Supply Voltage Gain and Phase vs Frequency VS =5V, 0V VCM = VS/2 80 180 50 70 135 45 60 90 40 VOLTAGE GAIN (dB) 40 0 30 –45 GAIN 20 –90 10 –135 –10 –20 0.01 1630/31 G25 1 10 FREQUENCY (MHz) 90 80 35 70 GAIN BANDWIDTH 30 50 PHASE MARGIN 20 30 20 –225 5 10 –270 100 0 0 5 90 VS = ±15V 90 80 70 VS = 5V, 0V 60 50 40 30 20 1k 10k 100k 1M FREQUENCY (Hz) 10M 1630/31 G12 Channel Separation vs Frequency VS = ±15V 80 POSITIVE SUPPLY 70 60 50 NEGATIVE SUPPLY 40 30 20 10 0 –40 –50 CHANNEL SEPARATION (dB) 110 0 30 15 20 25 10 TOTAL SUPPLY VOLTAGE (V) 1630/31 G14 PSRR vs Frequency 100 POWER SUPPLY REJECTION RATIO (dB) COMMON MODE REJECTION RATIO (dB) CMRR vs Frequency 40 10 1630/31 G11 120 60 25 15 –180 RL = 1k VS = 3V, 0V VS = ±15V 0.1 PHASE SHIFT (DEG) 45 100 VCM = VS/2 PHASE MARGIN (DEG) PHASE 50 0 100 1000 11630/31 G09 0.1Hz to 10Hz Output Voltage Noise TIME (1s/DIV) VCM = 4.25V NPN ACTIVE 3 1 GAIN BANDWIDTH (MHz) 100 VCM = 2.5V PNP ACTIVE 25 VS = 5V, 0V 9 CURRENT NOISE (pA/√Hz) 250 1630/31 G07 OUTPUT VOLTAGE (200nV/DIV) 10 30 NOISE VOLTAGE (nV/√Hz) CHANGE IN OFFSET VOLTAGE (µV) 300 –60 –70 –80 –90 –100 –110 –120 –130 1k 10k 100k 1M FREQUENCY (Hz) 10M 1630/31 G13 –140 10 100 1k 10k FREQUENCY (Hz) 100k 1M 1630/31 G15 16301fa 12 LT1630/LT1631 Typical Performance Characteristics Capacitive Load Handling 60 30 20 10 6 RISING EDGE 12 11 FALLING EDGE 10 10 100 CAPACITIVE LOAD (pF) 8 1000 0 8 12 16 20 24 28 TOTAL SUPPLY VOLTAGE (V) 4 RL = 10k –5 –10 –15 –20 0 5 –20 –15 –10 –5 10 OUTPUT VOLTAGE (V) 15 2 RL = 1k –2 LT1631CS VS = ±15V –160 0 20 –50 –6 –150 0 1 2 4 3 OUTPUT VOLTAGE (V) 5 40 60 80 100 120 140 160 TIME AFTER POWER-UP (SEC) 1630/31 G22 VS = ±15V RL = 100Ω 0 –100 –200 6 –5 –4 –3 –2 –1 0 1 2 3 4 OUTPUT VOLTAGE (V) VS = 5V, 0V AV = –1 2 0.01 0.001 1 0 1 10 100 FREQUENCY (kHz) 7 VIN = 2VP-P RL = 10k 0.1 VS = 5V, 0V AV = 1 3 6 Total Harmonic Distortion + Noise vs Frequency 1 4 5 1630/31 G21 THD + NOISE (%) S8 PACKAGE VS = ±15V –120 –200 N8 PACKAGE VS = ±15V 1.50 50 Maximum Undistorted Output Signal vs Frequency OUTPUT VOLTAGE SWING (VP-P) CHANGE IN OFFSET VOLTAGE (µV) –80 1.25 1.00 0.50 0.75 SETTLING TIME (µs) 100 –4 5 LT1631CS VS = 5V, 0V 0.25 1630/31 G20 40 –40 0 150 RL = 10k 0 Warm-Up Drift vs Time 0 INVERTING 1630/31 G18 VS = 5V, 0V 4 –8 20 N8 PACKAGE VS = 5V, 0V NONINVERTING Open-Loop Gain 1630/31 G19 S8 PACKAGE VS = 5V, 0V –4 –10 32 INPUT VOLTAGE (µV) INPUT VOLTAGE (µV) INPUT VOLTAGE (µV) RL = 1k 0 –2 200 6 5 0 Open-Loop Gain 8 VS = ±15V 10 2 1630/31 G17 Open-Loop Gain 15 INVERTING –8 1630/31 G16 20 NONINVERTING 4 –6 9 1 VS = ±15V 8 OUTPUT STEP (V) SLEW RATE (V/µs) OVERSHOOT (%) VOUT = 80% OF VS AV = –1 13 40 0 10 14 VS = 5V, 0V AV = 1 RL = 1k 50 Output Step vs Settling Time to 0.01% Slew Rate vs Supply Voltage 1000 1630/31 G24 0.0001 0.1 VS = 3V, 0V AV = 1 VS = 5V, 0V AND 3V, 0V AV = –1 VS = 5V, 0V AV = 1 10 1 FREQUENCY (kHz) 100 163031 G23 16301fa 13 LT1630/LT1631 Typical Performance Characteristics Harmonic Distortion vs Frequency HARMONIC DISTORTION (dBc) 0 5V Small-Signal Response 5V Large-Signal Response VS = 5V, 0V AV = 1 VIN = 2VP-P RL = 150Ω RL = 1k –20 –40 2ND –60 3RD 2ND –80 –100 100 163031 G26 VS = 5V, 0V AV = 1 RL = 1k 3RD VS = 5V, 0V AV = 1 RL = 1k 163031 G27 1000 200 500 FREQUENCY (kHz) 1630/31 G30 Harmonic Distortion vs Frequency HARMONIC DISTORTION (dBc) 0 –20 ±15V Small-Signal Response ±15V Large-Signal Response VS = 5V, 0V AV = –1 VIN = 2VP-P RL = 150Ω RL = 1k –40 –60 2ND 3RD –80 2ND VS = ±15V AV = 1 RL = 1k 3RD –100 100 200 500 FREQUENCY (kHz) 1000 163031 G28 VS = ±15V AV = 1 RL = 1k 163031 G29 1630/31 G31 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 transis- tor 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. 16301fa 14 LT1630/LT1631 Applications Information V+ R3 + +IN –IN R6 225Ω R7 225Ω I1 D1 D5 Q5 D2 D6 R4 Q12 Q11 R5 + VBIAS I2 V– Q4 Q3 Q9 D4 V C2 CC OUT Q2 Q1 D3 Q7 Q15 Q13 Q8 BUFFER AND OUTPUT BIAS C1 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 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. 16301fa 15 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. 16301fa 16 LT1630/LT1631 TYPICAL APPLICATIONS Single Supply, 40dB Gain, 350kHz Instrumentation Amplifier Tunable Q Notch Filter 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. R5 432Ω R2 2k 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. R4 20k – OUT1 1/2 LT1630 R3 2k + VIN– – + VOUT AV = VOUT = ( VIN+ – VIN – ) • AV 1.0 V R2 + 0.1V VCML = OUT 1.1 A V R5 UPPER LIMIT COMMO ON MODE INPUT VOLTAGE 1.0 V R2 + ( VS – 0.15V ) VCMH = OUT 1.1 A V R5 RRENT WHERE VS IS THE SUPPLY CUR R10 10k C2 4.7µF + R11 10k R8 5k fO = 98kHz fO = 1 2πRC VO(DC) = R7 1k 1630/31 F04 (5V )(R11) = 2.5V R11+ R10 AV = 2 Figure 4. Tunable Q Notch Filter Figure 2. Single Supply, 40dB Gain Instrumentation Amplifier 50 40 40 DIFFERENTIAL INPUT 30 20 GAIN (VOUT/VIN)(dB) VOLTAGE GAIN (dB) R6 R5 1k 1k C5 4.7µF R9 1k VOUT – A2 1/2 LT1630 5V LOWER LIMIT COMMON MODE INPUT VOLTAGE R4 R2 R3 + R2 1+ + = 100 R3 R1 R5 A1 1/2 LT1630 – 1630/31 F02 BW = 355kHz + R 1.62k R R1 1.62k 500Ω C R2 1k 1000pF 1/2 LT1630 VIN+ 5V VIN VS R1 20k C 1000pF C1 2.2µF 10 0 COMMON MODE INPUT –10 –20 –30 20 INCREASING R8 0 –20 DECREASING R8 –40 –50 VS = 3V AV = 100 –60 –70 100 1k 10k 100k FREQUENCY (Hz) 10M 1M –40 0 20 40 60 80 100 120 140 160 180 200 FREQUENCY (kHz) 13630/31 F05 1630/31 F03 Figure 3. Frequency Response Figure 5. Frequency Response 16301fa 17 LT1630/LT1631 Package Description N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .300 – .325 (7.620 – 8.255) .045 – .065 (1.143 – 1.651) .065 (1.651) TYP .008 – .015 (0.203 – 0.381) .400* (10.160) MAX .130 p .005 (3.302 p 0.127) 8 7 6 5 1 2 3 4 .255 p .015* (6.477 p 0.381) +.035 .325 –.015 +0.889 8.255 –0.381 .120 (3.048) .020 MIN (0.508) MIN .018 p .003 .100 (2.54) BSC N8 1002 (0.457 p 0.076) NOTE: 1. DIMENSIONS ARE INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .189 – .197 (4.801 – 5.004) NOTE 3 .010 – .020 s 45o (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 5 .050 BSC INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) .150 – .157 (3.810 – 3.988) NOTE 3 .228 – .244 (5.791 – 6.197) .050 (1.270) BSC .014 – .019 (0.355 – 0.483) TYP NOTE: 1. DIMENSIONS IN 6 .045 p.005 .004 – .010 (0.101 – 0.254) 0o– 8o TYP .016 – .050 (0.406 – 1.270) 7 8 .053 – .069 (1.346 – 1.752) .245 MIN .160 p.005 SO8 0303 1 3 2 4 .030 p.005 TYP RECOMMENDED SOLDER PAD LAYOUT S Package 14-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .337 – .344 (8.560 – 8.738) NOTE 3 .045 p.005 .050 BSC 14 N 12 11 10 9 8 N .245 MIN .160 p.005 .228 – .244 (5.791 – 6.197) 1 .030 p.005 TYP 13 2 3 N/2 N/2 RECOMMENDED SOLDER PAD LAYOUT .010 – .020 s 45o (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 1 2 3 4 5 7 .004 – .010 (0.101 – 0.254) .053 – .069 (1.346 – 1.752) NOTE: 1. DIMENSIONS IN 0o – 8o TYP .016 – .050 (0.406 – 1.270) 6 .150 – .157 (3.810 – 3.988) NOTE 3 .014 – .019 (0.355 – 0.483) TYP .050 (1.270) BSC INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) S14 0502 16301fa 18 LT1630/LT1631 Revision History REV DATE A 2/2010 DESCRIPTION PAGE NUMBER Changes to Absolute Maximum Ratings 2 Updated Order Information Section 2 Added H Grade Part Added H Grade Electrical Characteristics Tables 2 6, 10 16301fa 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. 19 LT1630/LT1631 Typical Application 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. 5V R2 453W – 5V Q1 2N3906 A1 1/2 LT1630 C1 0.01µF + R4 10Ω R1 10Ω Q2 2N3906 + + R3 10k L1 220µH C2 1500pF VIN HP-MSA0785 C3 1500pF + C5 0.01µF HP-MSA0785 C4 1500pF RF2 RF1 C6 0.01µF L2 220µH L3 3.9µH VOUT L4 3.9µH + R5 50Ω A2 1/2 LT1630 1630/31 F06 – Figure 6. RF Amplifier Control Biasing and DC Restoration Related Parts PART NUMBER DESCRIPTON COMMENTS LT1211/LT1212 Dual/Quad 14MHz, 7V/µs, Single Supply Precision Op Amps Input Common Mode Includes Ground, 275µV VOS(MAX), 6µV/°C Max Drift, Max Supply Current 1.8mA per Op Amp LT1213/LT1214 Dual/Quad 28MHz, 12V/µs, Single Supply Precision Op Amps Input Common Mode Includes Ground, 275µV VOS(MAX), 6µV/°C Max Drift, Max Supply Current 3.5mA per Op Amp LT1215/LT1216 Dual/Quad 23MHz, 50V/µs, Single Supply Precision Op Amps Input Common Mode Includes Ground, 450µV VOS(MAX), 6µV/°C Max Drift, Max Supply Current 6.6mA per Op Amp LT1498/LT1499 Dual/Quad 10MHz, 6V/µs Rail-to-Rail Input and Output C-Load™ Op Amps High DC Accuracy, 475µV VOS(MAX), 4µV/°C Max Drift, Max Supply Current 2.2mA per Amp LT1632/LT1633 Dual/Quad 45MHz, 45V/µs Rail-to-Rail Input and Output Op Amps High DC Accuracy, 1.35mV VOS(MAX), 70mA Output Current, Max Supply Current 5.2mA per Amp 16301fa 20 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LT 0210 REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2009