LT1057

LT1057/LT1058 Dual and Quad, JFET Input Precision High Speed Op Amps FEATURES n n n n n n n n DESCRIPTION The LT®1057 is a matched JFET input dual op amp in the industry standard 8-pin configuration, featuring a combination of outstanding high speed and precision specifications. It replaces all the popular bipolar and JFET input dual op amps. In particular, the LT1057 upgrades the performance of systems using the LF412A and OP-215 JFET input duals. The LT1058 is the lowest offset quad JFET input operational amplifier in the standard 14-pin configuration. It offers significant accuracy improvement over presently available JFET input quad operational amplifiers. The LT1058 can replace four single precision JFET input op amps, while saving board space, power dissipation and cost. Both the LT1057 and LT1058 are available in the plastic PDIP package and the surface mount SO package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 14V/μs Slew Rate: 10V/μs Min 5MHz Gain-Bandwidth Product Fast Settling Time: 1.3μs to 0.02% 150μV Offset Voltage (LT1057): 450μV Max 180μV Offset Voltage (LT1058): 600μV Max 2μV/°C VOS Drift: 7μV/°C Max 50pA Bias Current at 70°C Low Voltage Noise: 13nV/√Hz at 1kHz 26nV/√Hz at 10Hz APPLICATIONS n n n n n n n Precision, High Speed Instrumentation Fast, Precision Sample-and-Hold Logarithmic Amplifiers D/A Output Amplifiers Photodiode Amplifiers Voltage-to-Frequency Converters Frequency-to-Voltage Converters TYPICAL APPLICATION Current Output, High Speed, High Input Impedance Instrumentation Amplifier V2 3 Distribution of Offset Voltage (All Packages, LT1057 and LT1058) 25 VS = 15V TA = 25 C LT1057: 610 OP AMPS LT1058: 520 OP AMPS 1130 OP AMPS TESTED + 1/4 LT1058 1 7.5k 4.7k 6 9.1k 5 500Ω* 7.5k PERCENT OF UNITS IOUT = 2(V1 – V2) RX RX IOUT 20 2 – – 1/4 LT1058 7 15 + 8 1/4 LT1058 10 + – 10 5 9 0 –1.0 –0.6 0.6 –0.2 0 0.2 INPUT OFFSET VOLTAGE (mV) 1.0 10578 TA01b 13 – 1/4 LT1058 14 4.7k 7.5k 6.8k 1k** V1 12 + *GAIN ADJUST **COMMON MODE REJECTION ADJUST BANDWIDTH 2MHz 10578 TA01 10578fc 1 LT1057/LT1058 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage ........................................................±20V Differential Input Voltage.........................................±40V Input Voltage...........................................................±20V Output Short-Circuit Duration .......................... Indefinite Storage Temperature Range...................–65°C to 150°C Lead Temperature (Soldering, 10 sec) .................. 300°C Operating Temperature Range LT1057AM/LT1057M/ LT1058AM/LT1058M (OBSOLETE) .....–55°C to 125°C LT1057AC/LT1057C/LT1057S LT1058AC/LT1058C/LT1058S ................... 0°C to 70°C LT1057I ......................................... –40°C ≤ TA ≤ 85°C PACKAGE/ORDER INFORMATION TOP VIEW NC 1 NC 2 OUT A 3 – IN A 4 +IN A 5 V– 6 NC 7 NC 8 – A + B TOP VIEW 16 NC 15 NC 14 V+ 13 OUT B – + TOP VIEW 16 OUT D +IN A 1 V– 2 +IN B 3 –IN B 4 8 7 6 5 –IN A OUT A V+ OUT B OUT A 1 – IN A 2 +IN A 3 V+ 4 B ORDER PART NUMBER LT1057S8 LT1057IS8 S8 PART MARKING 1057 1057I ORDER PART NUMBER – A + D – + 15 – IN D 14 +IN D 13 V– C 11 +IN B 10 NC 9 NC – IN B 6 OUT B 7 NC 8 SW PACKAGE 16-LEAD PLASTIC (WIDE) SO TJMAX = 150°C, θJA = 90°C/W SW PACKAGE 16-LEAD PLASTIC (WIDE) SO TJMAX =150°C, θJA =90°C/W OUTPUT A 1 ORDER PART NUMBER LT1057SW LT1057ISW TOP VIEW OUTPUT A –IN A +IN A V+ +IN B –IN B OUTPUT B 1 2 3 4 B ORDER PART NUMBER LT1058SW LT1058ISW ORDER PART NUMBER LT1058ACN LT1058CN LT1058AMJ LT1058MJ LT1058ACJ LT1058CJ 14 OUTPUT D – A + – 13 D + 12 –IN D +IN D 11 V– C 6 7 N14 PACKAGE 14-LEAD PDIP TJMAX = 125°C, θJA = 130°C/W J14 PACKAGE 14-LEAD CERDIP TJMAX = 150°C, θJA = 100°C/W Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges. 10578fc 2 – + – + 5 10 +IN C 9 8 –IN C OUTPUT C – + – + 12 – IN B +IN B 5 12 +IN C 11 –IN C 10 OUT C 9 NC S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, θJA = 200°C/W Please note that the LT1057S8/LT1057IS8 standard surface mount pinout differs from that of the LT1057 standard CERDIP/PDIP packages. TOP VIEW V+ 8 7 OUTPUT B A –IN A 2 +IN A 3 4 V – (CASE) B ++ – 6 –IN B 5 +IN B – LT1057AMH LT1057MH LT1057ACH LT1057CH H PACKAGE 8-LEAD METAL CAN ORDER PART NUMBER LT1057ACN8 LT1057CN8 LT1057ACJ8 LT1057CJ8 LT1057AMJ8 LT1057MJ8 OUTPUT 1 –IN A 2 +IN A 3 V– 4 TOP VIEW 8 – A + B V+ OUTPUT B – IN B + IN B 7 – + 6 5 N8 PACKAGE 8-LEAD PDIP TJMAX = 125°C, θJA = 130°C/W J8 PACKAGE 8-LEAD CERDIP TJMAX = 150°C, θJA = 100°C/W LT1057/LT1058 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS LT1057 LT1057 (S8 Package) LT1058 Fully Warmed Up Fully Warmed Up Differential Common Mode VCM = –11V to 8V Common Mode VCM = 8V to 11V 0.1Hz to 10Hz fO = 10Hz fO = 1kHz (Note 3) fO = 10Hz, 1kHz (Note 4) VO = ±10V, RL = 2k VO = ±10V, RL = 1k 150 120 ±10.5 , VS = ±10V to ±18V RL = 2k f = 1MHz (Note 6) DC to 5kHz, VIN = ±10V LT1057 LT1058 86 84 88 ±12 10 3.5 LT1057 LT1058 26 13 1.5 350 250 14.3 –11.5 100 98 103 ±13 14 5 1.6 132 2.5 VS = ±15V, TA = 25°C, VCM = 0V unless otherwise noted. (Note 2) LT1057AM/LT1058AM LT1057AC/LT1058AC MIN TYP 150 180 3 ±5 1012 1012 1011 4 2.0 2.4 22 4 100 80 ±10.5 82 80 86 ±12 8 3 28 14 1.8 300 220 14.3 –11.5 98 96 102 ±13 13 5 1.7 130 2.8 MAX 450 600 40 ±50 LT1057M/LT1058M LT1057C/LT1058C MIN TYP 200 220 250 4 ±7 1012 1012 1011 4 2.1 2.5 24 6 MAX 800 1200 1000 50 ±75 UNITS μV μV μV pA pA Ω Ω Ω pF μVP-P μVP-P nV/√Hz nV/√Hz fA/√Hz V/mV V/mV V V dB dB dB V V/μs MHz mA dB lOS lB Input Offset Current Input Bias Current Input Resistance Input Capacitance en en in AVOL Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Large-Signal Voltage Gain Input Voltage Range CMRR PSRR VOUT SR GBW IS Common Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Slew Rate Gain-Bandwidth Product Supply Current Per Amplifier Channel Separation (LT1057/LT1058 SW Package Only), VS = ±15V, TA = 25°C, VCM = 0V unless otherwise noted. SYMBOL VOS lOS lB PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Input Resistance –Differential –Common Mode Input Capacitance en en Input Noise Voltage Input Noise Voltage Density 0.1Hz to 10Hz fO = 10Hz fO = 1kHz LT1057 LT1058 CONDITIONS LT1057 LT1058 Fully Warmed Up Fully Warmed Up VCM = –11V to 8V VCM = 8V to 11V MIN TYP 0.3 0.35 5 ±10 0.4 0.4 0.05 4 2.1 2.5 26 13 MAX 2 2.5 50 ±100 UNITS mV pA pA TΩ pF μVP-P nV/√Hz 10578fc 3 LT1057/LT1058 ELECTRICAL CHARACTERISTICS unless otherwise noted. SYMBOL in AVOL PARAMETER Input Noise Current Density Large-Signal Voltage Gain Input Voltage Range CMRR PSRR VOUT SR GBW IS Common Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Slew Rate Gain-Bandwidth Product Supply Current Per Amplifier Channel Separation DC to 5kHz, VIN = ±10V f = 1MHz (Note 6) VCM = ±15V VS = ±10V to ±18V RL = 2k LT1057 LT1058 (LT1057/LT1058 SW Package Only), VS = ±15V, TA = 25°C, VCM = 0V CONDITIONS fO = 10Hz, 1kHz VO = ±10V RL = 2k RL = 1k 100 50 ±10.5 82 80 86 ±12 8 3 MIN TYP 1.8 300 220 14.3 –11.5 98 98 102 ±13 13 5 1.7 130 2.8 MAX UNITS fA/√Hz V/mV V dB dB V V/μs MHz mA dB The l denotes the specifications which apply over the temperature range of 0°C ≤ TA ≤ 70°C or –40°C ≤ TA ≤ 85°C (LT1057IS8), otherwise specifications are TA = 25°C. VS = ±15V, VCM = 0V, unless noted. LT1057AC LT1058AC SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS LT1057 LT1057IS8 LT1057S8 LT1058 LT1057 H/J8 Package N8 Package LT1057S8 (Note 5) LT1057IS8 (Note 5) LT1058 J Package (Note 5) N Package (Note 5) Warmed Up, TA = 70°C LT1057IS8 Warmed Up, TA = 70°C LT1057IS8 VO = ±10V, RL = 2k VCM = ±10.4V VS = ±10V to ±18V RL = 2k TA = 70°C l l l l l l l l l l l l l l l l l LT1057C LT1058C MAX 800 1200 7 10 10 15 150 ±250 50 80 84 ±12 2.8 MIN TYP 330 500 400 400 2.3 4 4 4.5 3 5 20 35 ±60 ±100 200 96 100 ±12.8 3.2 1.5 MAX 1400 2300 1900 1800 12 16 16 16 15 22 250 600 ±350 ±900 UNITS μV μV μV μV μV/°C μV/°C μV/°C μV/°C μV/°C μV/°C pA pA V/mV dB dB V mA mA MIN TYP 250 300 1.8 3 2.5 4 18 ±50 Average Temperature Coefficient of Input (Offset Voltage) IOS IB AVOL CMRR PSRR VOUT IS lnput Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Supply Current Per Amplifier 70 85 87 ±12 220 98 102 ±12.8 14 10578fc 4 LT1057/LT1058 ELECTRICAL CHARACTERISTICS SYMBOL VOS PARAMETER Input Offset Voltage (LT1057/LT1058 SW Package Only). The l denotes specifications which apply over the temperature range of VS = ±15V, VCM = 0V, 0°C ≤ TA ≤ 70°C (LT1057SW, LT1058SW) or –40°C ≤ TA ≤ 85°C (LT1057ISW, LT1058ISW), unless otherwise noted. CONDITIONS LT1057 LT1058S LT1058IS l l l l MIN TYP 0.5 0.6 0.7 5 20 35 ±60 ±100 MAX 2.5 3.0 4.0 UNITS mV Average Temperature Coefficient of Input Offset Voltage lOS lB A VOL CMRR PSRR VOUT Input Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Warmed Up, TA = 70°C Warmed Up, TA = 85°C Warmed Up, TA = 70°C Warmed Up, TA = 85°C VO = ±10V, RL = 2k VCM = ±10.5V VS = ±10V to ±18V RL = 2k LT1057 LT1058 LT1057 LT1058 LT1057 LT1058 μV/°C 250 400 ±400 ±700 pA pA mV dB dB V l l l l l l l 50 40 80 78 84 82 ±12 200 200 96 96 100 100 ±12.8 The l denotes the specifications which apply over the temperature range of –55°C ≤ TA ≤ 125°C, VS = ±15V, VCM = 0V, unless otherwise noted. LT1057AM LT1058AM SYMBOL PARAMETER VOS Input Offset Voltage Average Temperature Coefficient of Input Offset Voltage IOS IB AVOL CMRR PSRR VOUT IS lnput Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Supply Current Per Amplifier CONDITIONS LT1057 LT1058 LT1057 LT1058 (Note 5) Warmed Up, TA = 125°C Warmed Up, TA = 125°C VO = ±10V, RL = 2k VCM = ±10.4V VS = ±10V to ±17V RL = 2k TA = 125°C l l l l l l l l LT1057M LT1058M MAX 1100 1600 7 10 2 ±4.5 30 80 83 ±12 1.9 MIN TYP 400 550 2.5 3 0.2 ±0.7 110 95 98 ±12.6 1.3 2.2 MAX 2000 2500 12 15 3 ±6 UNITS μV μV μV/°C μV/°C nA nA V/mV dB dB V mA MIN TYP 300 380 2.0 2.5 0.15 ±0.6 40 84 86 ±12 120 97 100 ±12.7 1.25 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: Typical parameters are defined as the 60% yield of distributions of individual amplifiers; (i.e., out of 100 LT1058s or, 100 LT1057s, typically 240 op amps, or 120 for the LT1057, will be better than the indicated specification). Note 3: This parameter is tested on a sample basis only. Note 4: Current noise is calculated from the formula: in = (2qlb)1/2 where q = 1.6 • 10 –19 coulomb. The noise of source resistors up to 1G swamps the contribution of current noise. Note 5: This parameter is not 100% tested. Note 6: Gain-bandwidth product is not tested. It is guaranteed by design and by inference from the slew rate measurement. 10578fc 5 LT1057/LT1058 TYPICAL PERFORMANCE CHARACTERISTICS Input Bias and Offset Currents vs Temperature 1000 INPUT BIAS AND OFFSET CURRENT (pA) INPUT BIAS CURRENT, TA = 125°C (nA) VS = 15V VCM = 0V WARMED UP 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 TA = 25°C TA = 125°C TA = 70°C VS = 15V Input Bias Current Over the Common-Mode Range 160 140 120 100 80 60 40 20 0 –20 –5 0 –10 5 10 COMMON MODE INPUT VOLTAGE (V) 15 100 CHANGE IN OFFSET VOLTAGE (μV) INPUT BIAS CURRENT, TA = 25°C TO 70°C (pA) Warm-Up Drift VS = 15V TA = 25°C 80 300 100 BIAS CURRENT 30 OFFSET CURRENT 60 LT1058 N PACKAGE 40 LT1057 N, LT1058 J PACKAGE LT1057 H PACKAGE LT1057 J PACKAGE 10 20 3 0 25 75 100 50 AMBIENT TEMPERATURE (°C) 125 10578 G01 –0.2 –15 0 0 1 3 4 2 TIME AFTER POWER ON (MINUTES) 5 10578 G02 10578 G03 Distribution of Offset Voltage Drift with Temperature (H and J Package) 120 100 NUMBER OF UNITS 80 60 40 20 2 45 VS = 15V 112 LT1057H: 102 OP AMPS LT1057J: 130 OP AMPS LT1058J: 136 OP AMPS 368 OP AMPS Distribution of Offset Voltage Drift with Temperature (Plastic N Package) 120 100 NUMBER OF UNITS 80 70 60 40 20 22 9 60 65 VS = 15V LT1057N: 180 OP AMPS LT1058N: 176 OP AMPS 356 OP AMPS 1 UNIT EACH AT –19, –16, –13 14, 16μV/°C Long-Term Drift of Representative Units 50 40 OFFSET VOLTAGE CHANGE (μV) 30 20 10 0 –10 –20 –30 –40 –50 0 1 3 2 TIME (MONTHS) 4 5 10578 G06 VS = 15V TA = 25°C 96 70 44 31 27 11 32 24 16 4 21 0 3 6 9 –12 –9 –6 –3 0 12 OFFSET VOLTAGE DRIFT WITH TEMPERATURE (μV/°C) 10578 G04 53 4 0 3 6 9 –12 –9 –6 –3 0 12 OFFSET VOLTAGE DRIFT WITH TEMPERATURE (μV/°C) 10578 G05 Voltage Noise vs Frequency 1000 RMS VOLTAGE NOISE DENSITY (nV/ Hz) 70 50 VS = 15V TA = 25°C NOISE VOLTAGE (1μV/DIV) 0.1Hz to 10Hz Noise VS = 15V TA = 25°C 1000 Voltage Gain vs Temperature RL = 2k VOLTAGE GAIN (V/mV) 300 RL = 1k 100 VS = 15V V0 = 10V 30 20 30 1/f CORNER = 28Hz 10 3 10 30 100 300 1000 3000 10000 FREQUENCY (Hz) 10578 G07 0 2 6 4 TIME (SECONDS) 8 10 10578 G08 10 –75 –25 25 75 TEMPERATURE (°C) 125 10578 G09 10578fc 6 LT1057/LT1058 TYPICAL PERFORMANCE CHARACTERISTICS Large-Signal Response 30 Slew Rate, Gain-Bandwidth Product vs Temperature VS = 15V 10 8 PEAK-TO-PEAK OUTPUT SWING (V) GAIN BANDWIDTH PRODUCT (MHz) 30 Undistorted Output Swing vs Frequency VS = 15V TA = 25°C 24 5V/DIV SLEW RATE (V/μs) 20 SLEW FALL GBW SLEW RISE 6 4 2 18 12 10 AV = +1 CL = 100pF 0.5μs/DIV 10578 G10 6 0 –50 –25 50 25 75 0 TEMPERATURE (°C) 100 125 0 100k 1M FREQUENCY (Hz) 10M 10578 G12 10578 G11 Small-Signal Response 140 120 Gain, Phase Shift vs Frequency 100 80 70 PHASE SHIFT (DEGREES) PHASE MARGIN = 58° 120 60 OVERSHOOT (%) 50 Capacitive Load Handling VS = 15V TA = 25°C 100 20mV/DIV GAIN (dB) 80 60 AV = –1 40 30 20 10 AV = 10 AV = +1 140 GAIN PHASE 160 40 20 AV = +1 CL = 100pF 0.2μs/DIV 10578 G13 VS = 15V 0 TA = 25°C CL = 10pF –20 10 100 1 180 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) 10578 G14 0 10 100 1000 CAPACITIVE LOAD (pF) 10000 10578 G15 Settling Time 10 OUTPUT VOLTAGE SWING FROM 0V (V) 160 Channel Separation vs Frequency 100 Output Impedance vs Frequency VS = 15V TA = 25°C AV = 100 0 FROM LEFT TO RIGHT: SETTLING TIME TO 10mV, 5mV, 2mV, 1mV, 0.5mV 0.5mV 120 LIMITED BY THERMAL INTERACTION AT DC = 132dB RS = 1k LIMITED BY PIN-TO-PIN CAPACITANCE OUTPUT IMPEDANCE (Ω) 5 CHANNEL SEPARATION (dB) 10mV 0.5mV 140 RS = 10Ω 10 AV = 10 100 1 AV = 1 0.1 1k 10k 100k FREQUENCY (Hz) 10M 10578 G18 –5 10mV –10 VS = 15V TA = 25°C 0 1 2 3 10578 G16 80 60 VS = 15V TA = 25°C VIN = 20VP-P TO 5kHz RL = 2k 1 10 SETTLING TIME (μs) 100 1k 10k FREQUENCY (Hz) 100k 1M 10578 G17 10578fc 7 LT1057/LT1058 TYPICAL PERFORMANCE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 120 100 80 CMRR (dB) 60 40 20 0 15 VS = 15V TA = 25°C COMMON MODE RANGE (V) 14 13 CMRR, PSRR (dB) 12 11 10 –11 –12 –13 –14 10 100 1k 10k 100k FREQUENCY (Hz) 1M 10M VS = 15V –15 50 –50 0 TEMPERATURE (°C) 110 PSRR Common Mode Range vs Temperature 120 Common Mode and Power Supply Rejections vs Temperature VS = 10V TO 17V FOR PSRR VS = 15V, VCM = 10.5V FOR CMRR CMRR 100 90 100 10578 G20 –25 25 75 TEMPERATURE (°C) 125 10578 G21 10578 G19 Power Supply Rejection Ratio vs Frequency 140 SUPPLY CURRENT PER AMPLIFIER (mA) POWER SUPPLY REJECTION RATIO (dB) TA = 25°C 120 100 80 60 40 20 0 10 100 NEGATIVE SUPPLY POSITIVE SUPPLY 3 Supply Current vs Temperature 50 40 SHORT-CIRCUIT CURRENT (mA) 30 20 10 0 –10 –20 –30 –40 0 –50 –25 50 25 75 0 TEMPERATURE (°C) 100 125 –50 Short-Circuit Current vs Time (One Output Shorted to Ground) VS = 15V TA = –55°C TA = 25°C TA = 125°C TA = 125°C TA = 25°C TA = –55°C 2 VS = 15V VS = 10V 1 100k 10k 1k FREQUENCY (Hz) 1M 10M 2 0 1 3 TIME FROM OUTPUT SHORT TO GROUND (MINUTES) 10578 G24 10578 G22 10578 G23 APPLICATIONS INFORMATION The LT1057 may be inserted directly in LF353, LF412, LF442, TL072, TL082 and OP-215 sockets. The LT1058 plugs into LF347, LF444, TL074 and TL084 sockets. Of course, all standard dual and quad bipolar op amps can also be replaced by these devices. High Speed Operation When the feedback around the op amp is resistive (RF) a pole will be created with RF, the source resistance and capacitance (RS , CS), and the amplifier input capacitance (CIN ≈ 4pF). In low closed loop gain configurations and – CIN RS CS OUTPUT with RS and RF in the kilohm range, this pole can create excess phase shift and even oscillation. A small capacitor (CF) in parallel with RF eliminates this problem. With RS (CS + CIN) = RF CF, the effect of the feedback pole is completely removed. CF RF + 10578 F01 10578fc 8 LT1057/LT1058 APPLICATIONS INFORMATION Settling time is measured in a test circuit which can be found in the LT1055/LT1056 data sheet and in Application Note 10. Achieving Picoampere/Microvolt Performance In order to realize the picoampere/microvolt level accuracy of the LT1057/LT1058, proper care must be exercised. For example, leakage currents in circuitry external to the op amp can significantly degrade performance. High quality insulation should be used (e.g., TeflonTM, Kel-F); cleaning of all insulating surfaces to remove fluxes and other residues will probably be required. Surface coating may be necessary to provide a moisture barrier in high humidity environments. Board leakage can be minimized by encircling the input circuitry with a guard ring operated at a potential close to that of the inputs; in inverting configurations, the guard ring should be tied to ground, in noninverting connections, to the inverting input. Guarding both sides of the printed circuit board is required. Bulk leakage reduction depends on the guard ring width. The LT1057/LT1058 have the lowest offset voltage of any dual and quad JFET input op amps available today. However, the offset voltage and its drift with time and temperature are still not as good as on the best bipolar amplifiers (because the transconductance of FETs is considerably lower than that of bipolar transistors). Conversely, this lower transconductance is the main cause of the significantly faster speed performance of FET input op amps. Teflon is a trademark of DuPont. Offset voltage also changes somewhat with temperature cycling. The AM grades show a typical 40μV hysteresis (50μV on the M grades) when cycled over the –55°C to 125°C temperature range. Temperature cycling from 0°C to 70°C has a negligible (less than 20μV) hysteresis effect. The offset voltage and drift performance are also affected by packaging. In the plastic N package, the molding compound is in direct contact with the chip, exerting pressure on the surface. While NPN input transistors are largely unaffected by this pressure, JFET device drift is degraded. Consequently for best drift performance, as shown in the Typical Performance Characteristics distribution plots, the J or H packages are recommended. In applications where speed and picoampere bias currents are not necessary, Linear Technology offers the bipolar input, pin compatible LT1013 and LT1014 dual and quad op amps. These devices have significantly better DC specifications than any JFET input device. Phase Reversal Protection Most industry standard JFET input single, dual and quad op amps (e.g., LF156, LF351, LF353, LF411, LF412, OP-15, OP-16, OP-215, TL084) exhibit phase reversal at the output when the negative common mode limit at the input is exceeded (i.e., below –12V with ±15V supplies). The photos below show a ±16V sine wave input (A), the response of an LF412A in the unity gain follower mode (B), and the response of the LT1057/LT1058 (C). The phase reversal of photo (B) can cause lock-up in servo systems. The LT1057/LT1058 does not phase-reverse due to a unique phase reversal protection circuit. (A) ±16V Sine Wave Input (B) LF412A Output All Photos 5V/Div Vertical Scale, 50μs/Div Horizontal Scale (C) LT1057/LT1058 Output 10578fc 9 LT1057/LT1058 TYPICAL APPLICATIONS Low Noise, Wideband, Gain = 100 Amplifier with High Input Impedance 4.3k 470Ω – 1/4 LT1058 2.4k 7.5k 500Ω + 4.3k 470Ω 2.4k – – 1/4 LT1058 INPUT 1/4 LT1058 OUTPUT + + 4.3k 2.4k 470Ω – 1/4 LT1058 + –3dB BANDWIDTH = 350kHZ GAIN-BANDWIDTH PRODUCT = 35MHz WIDEBAND NOISE = 13nV/ Hz = 7.5nV/ Hz REFERRED TO INPUT 3 RMS NOISE DC TO FULL BANDWIDTH = 7μV 10578 TA02 Wideband, High Input Impedance, Gain = 1000 Amplifier 4.7k 1k 1k 4.7k – 1/4 LT1058 – + 1/4 LT1058 1/4 LT1058 + 1/4 LT1058 OUTPUT INPUT + – + – 4.7k 1k 1k 100Ω –3dB BANDWIDTH = 400kHz GAIN-BANDWIDTH PRODUCT = 400MHz WIDEBAND NOISE = 13nV/ Hz REFERRED TO INPUT 4.7k 10578 TA03 Low Distortion, Crystal Stabilized Oscillator 130Ω COMMON MODE SUPPRESSION CRYSTAL 20kHz NT CUT 100Ω 0.01μF – 100k #327 LAMP 1/2 LT1057 + OSCILLATOR 1VRMS OUT 20kHz 0.005% DISTORTION – 1/2 LT1057 15pF + 10578 TA04 10578fc 10 LT1057/LT1058 TYPICAL APPLICATIONS Fast, Precision Bridge Amplifier – + 10k 330pF 1/2 LT1057 10k 1k – INPUT 330pF 1/2 LT1057 RLOAD LT1010 LT1010 + SLEW RATE = 14V/μs OUTPUT CURRENT TO LOAD = 150mA LOAD CAPACITANCE: UP TO 1μF 10578 TA05 Analog Divider 80.6k* 1μF 20k LTC1043 B INPUT 7 8 –5V 1k 6 LT1004 1.2V 1μF LTC1043 5 5V – + 1/2 LT1057 OUTPUT = A B 12 11 13 1μF 16 14 75k* A INPUT – + 1/2 LT1057 30pF 22k 330k 2N2907 1μF * 1% FILM –5V 10578 TA06 + 2 0.001 POLYSTYRENE –5V 10578fc 11 LT1057/LT1058 TYPICAL APPLICATIONS Bipolar Input (AC) V/F Converter 1k –5V LT1004 2.5V 0.1μF 18 0.01 POLYSTYRENE 1μF INPUT 1V 36.5k* 10k 5V 3 6 LTC1043 2 5 16 15 1M* 1M* + 1/4 LT1058 – 1/4 LT1058 2N3906 1M* 10k – + 1M* 22k 10k 0.1μF DATA OUTPUT 0kHz TO 1kHz – 1/4 LT1058 150pF + –5V – + 1/4 LT1058 SIGN BIT *1% FILM MATCH 1M RESISTORS TO 0.05% 10578 TA07 12-Bit A/D Converter 10k 0.001μF CLOCK BOUT 10k 2k 4 3 7 10k 10k – + 1/4 LT1058 INTEGRATOR 0.01μF EIN 5V FLIP-FLOP 15V 14 2 1 – 100k* 1/4 LT1058 74C74 5 6 + –5V 6.8k 180pF + 68pF 10k 15V 1/4 LT1058 AOUT – 10k OUTPUT GATE 10k –15V 4 LTC1043 CURRENT SWITCH 15 18 16 820Ω –15V LEVEL SHIFT 2N3906 –15V 2N4393 1/4 LT1058 A DATA OUTPUT = OUT BOUT *VISHAY S-102 RESISTOR 95k* 10k 12 + – GND –15V 17 3 1k OUT LT1021 IN 10V NC 10578 TA08 10578fc LT1057/LT1058 TYPICAL APPLICATIONS Instrumentation Amplifier with Shield Driver 3 + 1/4 LT1058 1 1k RF 9.1k 10k 2 – GUARD RG 1k 15V 5 + INPUT + 8 1/4 LT1058 10 + – 4 7 OUTPUT – GUARD – 9 RG 1k 6 1/4 LT1058 11 –15V 13 – 1/4 LT1058 14 RF 9.1k 1k 10k 12 + GAIN = 10(1+RF/RG) IB = 5pA RIN = 1012 BW = 350kHz 100 10578 TA09 100dB Range Logarithmic Photodiode Amplifier 6 Q4 5 4 10 2k 11 Q5 12 500pF 50k* 1M 1M FULL-SCALE 750k* TRIM 50k DARK TRIM – IP 1/2 LT1057 + 0.033μF 0.01μF – 1/2 LT1057 EOUT LT1021-10V 10k* 15V IN OUT 10k* + – LM301A 3k 1 2 Q2 3 + 2k 33Ω 15 14 Q1 13 = HP-5082-4204 PIN PHOTODIODE. Q1–Q5 = CA3096. CONNECT SUBSTRATE OF CA3096 ARRAY TO Q4’s EMITTER. *1% RESISTOR 100dB RANGE LOGARITHMIC PHOTODIODE AMPLIFIER 7 Q3 9 15V 8 LIGHT (900μM) 1MW 100μW 10μW 1μW 100nW 10nW RESPONSE DATA DIODE CURRENT 350μA 35μA 3.5μA 350nA 35nA 3.5nA CIRCUIT OUTPUT 10.0V 7.85V 5.70V 3.55V 1.40V –0.75V 10578 TA10 10578fc 13 LT1057/LT1058 PACKAGE DESCRIPTION H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) .335 – .370 (8.509 – 9.398) DIA .305 – .335 (7.747 – 8.509) .040 (1.016) MAX .050 (1.270) MAX GAUGE PLANE .165 – .185 (4.191 – 4.699) REFERENCE PLANE .500 – .750 (12.700 – 19.050) 45°TYP .028 – .034 (0.711 – 0.864) .027 – .045 (0.686 – 1.143) PIN 1 .200 (5.080) TYP SEATING PLANE .010 – .045* (0.254 – 1.143) .016 – .021** (0.406 – 0.533) .110 – .160 (2.794 – 4.064) INSULATING STANDOFF *LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND THE SEATING PLANE .016 – .024 **FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS (0.406 – 0.610) H8(TO-5) 0.200 PCD 0801 J8 Package 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) .300 BSC (7.62 BSC) CORNER LEADS OPTION (4 PLCS) .200 (5.080) MAX .015 – .060 (0.381 – 1.524) .005 (0.127) MIN .405 (10.287) MAX 8 7 6 5 .008 – .018 (0.203 – 0.457) 0° – 15° .023 – .045 (0.584 – 1.143) HALF LEAD OPTION .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .025 (0.635) RAD TYP 1 2 3 4 .220 – .310 (5.588 – 7.874) .045 – .065 (1.143 – 1.651) .014 – .026 (0.360 – 0.660) .100 (2.54) BSC NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .125 3.175 MIN J8 0801 J Package 14-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) .200 (5.080) MAX .015 – .060 (0.381 – 1.524) .005 (0.127) MIN .785 (19.939) MAX 14 13 12 11 10 9 8 .300 BSC (7.62 BSC) .008 – .018 (0.203 – 0.457) 0° – 15° .025 (0.635) .125 RAD TYP (3.175) MIN J14 0801 .220 – .310 (5.588 – 7.874) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .045 – .065 (1.143 – 1.651) .014 – .026 (0.360 – 0.660) .100 (2.54) BSC 1 2 3 4 5 6 7 OBSOLETE PACKAGES 10578fc 14 LT1057/LT1058 PACKAGE DESCRIPTION 8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .300 – .325 (7.620 – 8.255) .400* (10.160) MAX 8 .008 – .015 (0.203 – 0.381) 7 6 5 .065 (1.651) TYP .120 (3.048) .020 MIN (0.508) MIN .018 ± .003 (0.457 ± 0.076) N8 1002 .045 – .065 (1.143 – 1.651) .130 ± .005 (3.302 ± 0.127) ( +.035 .325 –.015 +0.889 8.255 –0.381 .255 ± .015* (6.477 ± 0.381) ) 1 2 3 4 INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) NOTE: 1. DIMENSIONS ARE .100 (2.54) BSC N Package 14-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .300 – .325 (7.620 – 8.255) 14 13 12 .770* (19.558) MAX 11 10 9 8 .020 (0.508) MIN .130 ± .005 (3.302 ± 0.127) .045 – .065 (1.143 – 1.651) .008 – .015 (0.203 – 0.381) +.035 .325 –.015 +0.889 –0.381 .255 ± .015* (6.477 ± 0.381) .065 (1.651) TYP .005 (0.125) .100 MIN (2.54) BSC .018 ± .003 (0.457 ± 0.076) ( 8.255 ) 1 2 3 4 5 6 7 INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) NOTE: 1. DIMENSIONS ARE .120 (3.048) MIN N14 1002 S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .045 ±.005 .050 BSC 8 .189 – .197 (4.801 – 5.004) NOTE 3 7 6 5 N N .245 MIN .160 ±.005 .228 – .244 (5.791 – 6.197) .150 – .157 (3.810 – 3.988) NOTE 3 N/2 .053 – .069 (1.346 – 1.752) .004 – .010 (0.101 – 0.254) .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 0°– 8° TYP 1 .030 ±.005 TYP 2 3 N/2 RECOMMENDED SOLDER PAD LAYOUT 1 NOTE: INCHES 1. DIMENSIONS IN (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) 2 3 4 .014 – .019 (0.355 – 0.483) TYP .016 – .050 (0.406 – 1.270) .050 (1.270) BSC SO8 0502 10578fc 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 LT1057/LT1058 TYPICAL APPLICATION SW Package 16-Lead Plastic Small Outline (Wide .300 Inch) (Reference LTC DWG # 05-08-1620) .030 ±.005 TYP N .050 BSC .045 ±.005 .398 – .413 (10.109 – 10.490) NOTE 4 16 15 14 13 12 11 10 9 N .420 MIN .325 ±.005 NOTE 3 .394 – .419 (10.007 – 10.643) 1 2 3 N/2 N/2 RECOMMENDED SOLDER PAD LAYOUT 1 .291 – .299 (7.391 – 7.595) NOTE 4 .010 – .029 × 45° (0.254 – 0.737) 0° – 8° TYP 2 3 4 5 6 7 8 .005 (0.127) RAD MIN .093 – .104 (2.362 – 2.642) .037 – .045 (0.940 – 1.143) .009 – .013 (0.229 – 0.330) NOTE 3 .016 – .050 (0.406 – 1.270) .050 (1.270) BSC .004 – .012 (0.102 – 0.305) NOTE: 1. DIMENSIONS IN .014 – .019 (0.356 – 0.482) TYP INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS 4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) S16 (WIDE) 0502 RELATED PARTS PART NUMBER LT1055/6 LT1880 LT1881/2 LT1884/5 LT6010 LT6011/12 LTC6078/9 LTC6241/2 DESCRIPTION Precision, High Speed, JFET Input Operational Amplifiers SOT-23, Rail-to-Rail Output, Picoamp Input Precision Op Amps Dual and Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps 135μA, 14nV/rtHz, Rail-to-Rail Output, Precision Low Power Op Amp with Shutdown Dual/Quad 135μA, 14nV/rtHz, Rail-to-Rail Output Precision Low Power Op Amp Micropower Precision, Dual/Quad CMOS Rail-to-Rail Input/Output Amplifiers Dual/Quad 18MHz, Low Noise, Rail-to-Rail CMOS Op Amps COMMENTS 12V/μs Slew Rate, 5.5MHz Bandwidth 150μV Max Offset Voltage, 900pA Max Input Bias Current 50μV Max Offset Voltage, 200pA Max Input Bias Current 50μV Max Offset Voltage, 400pA Max Input Bias Current 35μV Max Offset Voltage, 300pA Max Input Bias Current 60μV Max Offset Voltage, 300pA Max Input Bias Current Maximum Offset Drift: 0.7μV/°C O.1Hz to 10Hz Noise: 550n Vpp 10578fc 16 Linear Technology Corporation (408) 432-1900 ● FAX: (408) 434-0507 ● LT 0108 REV C • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 www.linear.com © LINEAR TECHNOLOGY CORPORATION 1989