LT1468CDD-2-PBF

LT1468-2 200MHz, 30V/µs 16-Bit Accurate AV ≥ 2 Op Amp FEATURES n n n n n n n n n n n n n n n DESCRIPTION The LT®1468-2 is a precision high speed operational amplifier with 16-bit accuracy, decompensated to be stable in a gain of 2 or greater. The combination of precision and AC performance makes the LT1468-2 the optimum choice for high accuracy applications such as DAC current-to-voltage conversion and ADC buffers. The initial accuracy and drift characteristics of the input offset voltage and inverting input bias current are tailored for inverting applications. The 200MHz gain bandwidth ensures high open-loop gain at frequency for reducing distortion. In noninverting applications such as an ADC buffer, the low distortion and DC accuracy allow full 16-bit AC and DC performance. The high slew rate of the LT1468-2 improves large-signal performance in applications such as active filters and instrumentation amplifiers compared to other precision op amps. The LT1468-2 is specified on power supply voltages of ±5V and ±15V and from –40°C to 85°C. For a unity-gain stable op amp with same DC performance, see the LT1468 datasheet. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Stable in Gain AV ≥ 2 (AV = –1) 200MHz Gain Bandwidth Product 30V/μs Slew Rate Settling Time: 800ns (10V Step, 150μV) Specified at ±5V and ±15V Supplies Low Distortion, – 96.5dB for 100kHz, 10VP-P Maximum Input Offset Voltage: 75μV Maximum Input Offset Voltage Drift: 2μV/°C Maximum (–) Input Bias Current: 10nA Minimum DC Gain: 1000V/mV Minimum Output Swing into 2k: ±12.8V Input Noise Voltage: 5nV/√Hz Input Noise Current: 0.6pA/√Hz Total Input Noise Optimized for 1k < RS < 20k Available in an 8-Lead Plastic SO Package and 8-Lead DFN Package APPLICATIONS n n n n n n 16-Bit DAC Current-to-Voltage Converter Precision Instrumentation ADC Buffer Low Distortion Active Filters High Accuracy Data Acquisition Systems Photodiode Amplifiers TYPICAL APPLICATION 16-Bit DAC I-to-V Converter Large Signal Transient, AV = –1 10V VS = ±15V AV = –1 RF = RG = 2k CF = 22pF 20pF DAC INPUTS 16 6k – LT1468-2 2k VOUT 50pF 2V/DIV LTC 1597 ® + 0V OPTIONAL NOISE FILTER OFFSET: VOS + IB (6kΩ) < 1LSB SETTLING TIME TO 150μV = 1.6μs SETTLING LIMITED BY 6k AND 20pF TO COMPENSATE DAC OUTPUT CAPACITANCE 14682 TA01 200ns/DIV 14682 TA02 14682f 1 LT1468-2 ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (V+ to V –).................................36V Maximum Input Current (Note 2) ...........................10mA Output Short-Circuit Duration (Note 3) ............ Indefinite Operating Temperature Range ................. –40°C to 85°C 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) for S8 Only........................................................ 300°C PIN CONFIGURATION TOP VIEW NULL 1 –IN 2 +IN 3 V– 4 8 DNC* V+ OUT NULL NULL 1 –IN 2 +IN 3 V– 4 TOP VIEW 8 7 6 5 DNC* V+ VOUT NULL + – 7 6 5 DD PACKAGE 8-LEAD (3mm × 3mm) PLASTIC DFN S8 PACKAGE 8-LEAD PLASTIC SO *DO NOT CONNECT TJMAX = 150°C, θJA = 43°C/W EXPOSED PAD IS INTERNALLY CONNECTED TO V– TJMAX = 150°C, θJA = 190°C/W ORDER INFORMATION LEAD FREE FINISH LT1468CS8-2#PBF LT1468IS8-2#PBF LT1468ACDD-2#PBF LT1468AIDD-2#PBF LT1468CDD-2#PBF LT1468IDD-2#PBF TAPE AND REEL LT1468CS8-2#TRPBF LT1468IS8-2#TRPBF LT1468ACDD-2#TRPBF LT1468AIDD-2#TRPBF LT1468CDD-2#TRPBF LT1468IDD-2#TRPBF PART MARKING* PACKAGE DESCRIPTION 14682 14682 LDSY LDSY LDSY LDSY 8-Lead Plastic Small Outline 8-Lead Plastic Small Outline 8-Lead (3mm × 3mm) Plastic DFN 8-Lead (3mm × 3mm) Plastic DFN 8-Lead (3mm × 3mm) Plastic DFN 8-Lead (3mm × 3mm) Plastic DFN SPECIFIED TEMPERATURE RANGE 0°C to 70°C –40°C to 85°C 0°C to 70°C –40°C to 85°C 0°C to 70°C –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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/ The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCM = 0V unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS S8 Package LT1468A, DD Package LT1468, DD Package IOS Input Offset Current VSUPPLY ±15V ± 5V ±15V ± 5V ±15V ± 5V ±5V to ±15V MIN TYP 30 50 30 50 100 150 13 MAX 75 175 75 175 200 300 50 UNITS μV μV μV μV μV μV nA 14682f ELECTRICAL CHARACTERISTICS 2 LT1468-2 ELECTRICAL CHARACTERISTICS SYMBOL IB IB – + The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCM = 0V unless otherwise noted. PARAMETER Inverting Input Bias Current Noninverting Input Bias Current Input Noise Voltage 0.1Hz to 10Hz f = 10kHz f = 10kHz VCM = ±12.5V Differential Input Noise Voltage Input Noise Voltage Input Resistance Input Capacitance Input Voltage Range + Input Voltage Range – CMRR Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain VCM = ±12.5V VCM = ±2.5V VS = ±4.5V to ±15V VOUT = ±12.5V, RL = 10k VOUT = ±12.5V, RL = 2k VOUT = ±2.5V, RL = 10k VOUT = ±2.5V, RL = 2k RL = 10k RL = 2k RL = 10k RL = 2k VOUT = ±12.5V VOUT = ±2.5V VOUT = 0V, VIN = ±0.2V RL = 2k (Note 5) 10V Peak, (Note 6) 3V Peak, (Note 6) f = 100kHz, RL = 2k 10V Step, 0.01%, AV = –1 10V Step, 150μV, AV = –1 5V Step, 0.01%, AV = –1 AV = –1, f = 100kHz ±15V ±15V ±5V ±5V ±15V ±15V ± 5V ±5V ±15V ±5V ±15V ±15V ± 5V ±15V ±5V ±15V ±5V ±15V ±15V ±5V ±15V ±15V ±5V 140 130 CONDITIONS VSUPPLY ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V ±15V ±15V ±15V ±15V ±5V ±15V ±5V ±15V ±5V 96 96 100 1000 500 1000 500 ±13.0 ±12.8 ±3.0 ±2.8 ±15 ±15 ±25 20 15 12.5 2.5 100 50 MIN TYP 3 –10 0.3 5 0.6 240 150 4 13.5 3.5 –14.3 –4.3 110 112 112 9000 5000 6000 3000 ±13.6 ±13.5 ±3.6 ±3.5 ±22 ±22 ±40 30 22 475 1160 200 190 650 800 550 0.02 3.9 3.6 5.2 5.0 –12.5 –2.5 MAX ±10 ±40 UNITS nA nA μVP-P nV/√Hz pA/√Hz MΩ kΩ pF V V V V dB dB dB V/mV V/mV V/mV V/mV V V V V mA mA mA V/μs V/μs kHz kHz MHz MHz ns ns ns Ω mA mA en in RIN CIN PSRR AVOL VOUT Output Swing IOUT ISC SR Output Current Short-Circuit Current Slew Rate Full-Power Bandwidth GBW ts Gain Bandwidth Settling Time RO IS Output Resistance Supply Current The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. 0°C ≤ TA ≤ 70°C, VCM = 0V unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS S8 Package LT1468A, DD Package LT1468, DD Package VSUPPLY ±15V ± 5V ±15V ± 5V ±15V ± 5V ● ● ● ● ● ● MIN TYP MAX 150 250 150 250 300 400 UNITS μV μV μV μV μV μV 14682f 3 LT1468-2 ELECTRICAL CHARACTERISTICS SYMBOL IOS IB IB – The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. 0°C ≤ TA ≤ 70°C, VCM = 0V unless otherwise noted. PARAMETER Input VOS Drift Input Offset Current Input Offset Current Drift Inverting Input Bias Current Negative Input Current Drift + CONDITIONS (Note 7) VSUPPLY ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V ± 5V to ±15V ±5V to ±15V ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● MIN TYP 0.7 60 MAX 2.0 65 ±15 UNITS μV/°C nA pA/°C nA pA/°C nA dB dB dB V/mV V/mV V/mV V/mV V V V V mA mA mA V/μs V/μs 40 ±50 94 94 98 500 250 500 250 ±12.9 ±12.7 ±2.9 ±2.7 ±12.5 ±12.5 ±17 18 13 130 120 200 190 6.5 6.3 Noninverting Input Bias Current Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain VCM = ±12.5V VCM = ±2.5V VS = ±4.5V to ±15V VOUT = ±12.5V, RL = 10k VOUT = ±12.5V, RL = 2k VOUT = ±2.5V, RL = 10k VOUT = ±2.5V, RL = 2k RL = 10k RL = 2k RL = 10k RL = 2k VOUT = ±12.5V VOUT = ±2.5V VOUT = 0V, VIN = ±0.2V RL = 2k (Note 5) f = 100kHz, RL = 2k CMRR PSRR AVOL ±15V ±5V ±15V ±15V ±5V ±5V ±15V ±15V ±5V ±5V ±15V ±5V ±15V ±15V ±5V ±15V ± 5V ±15V ±5V VOUT Output Swing IOUT ISC SR GBW IS Output Current Short-Circuit Current Slew Rate Gain Bandwidth Supply Current MHz MHz mA mA The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. –40°C ≤ TA ≤ 85°C, VCM = 0V unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS S8 Package LT1468A, DD Package LT1468, DD Package Input VOS Drift IOS IB IB – VSUPPLY ±15V ± 5V ±15V ± 5V ±15V ± 5V ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V ● ● ● ● ● ● ● ● ● ● ● ● ● MIN TYP MAX 230 330 230 330 400 500 UNITS μV μV μV μV μV μV μV/°C nA pA/°C nA pA/°C nA dB dB dB 14682f (Note 7) 0.7 120 2.5 80 ±30 Input Offset Current Input Offset Current Drift Inverting Input Bias Current Negative Input Current Drift Noninverting Input Bias Current Common Mode Rejection Ratio Power Supply Rejection Ratio VCM = ±12.5V VCM = ±2.5V VS = ±4.5V to ±15V 80 ±60 92 92 96 + CMRR PSRR ±15V ±5V 4 LT1468-2 ELECTRICAL CHARACTERISTICS SYMBOL AVOL PARAMETER Large-Signal Voltage Gain The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. –40°C ≤ TA ≤ 85°C, VCM = 0V unless otherwise noted. CONDITIONS VOUT = ±12V, RL = 10k VOUT = ±10V, RL = 2k VOUT = ±2.5V, RL = 10k VOUT = ±2.5V, RL = 2k RL = 10k RL = 2k RL = 10k RL = 2k VOUT = ±12.5V VOUT = ±2.5V VOUT = 0V, VIN = ±0.2V RL = 2k (Note 5) f = 100kHz, RL = 2k VSUPPLY ±15V ±15V ±5V ±5V ±15V ±15V ±5V ±5V ±15V ±5V ±15V ±15V ±5V ±15V ±5V ±15V ±5V ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● MIN 300 150 300 150 ±12.8 ±12.6 ±2.8 ±2.6 ±7 ±7 ±12 15 11 110 100 TYP MAX UNITS V/mV V/mV V/mV V/mV V V V V mA mA mA V/μs V/μs VOUT Output Swing IOUT ISC SR GBW IS Output Current Short-Circuit Current Slew Rate Gain Bandwidth Supply Current 200 190 7.0 6.8 MHz MHz mA mA 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: The inputs are protected by back-to-back diodes and two 100Ω series resistors. If the differential input voltage exceeds 0.7V, the input current should be limited to 10mA. Input voltages outside the supplies will be clamped by ESD protection devices and input currents should also be limited to 10mA. Note 3: A heat sink may be required to keep the junction temperature below absolute maximum when the output is shorted indefinitely. Note 4: The LT1468C-2 is guaranteed to meet specified performance from 0°C to 70°C and is designed, characterized and expected to meet these extended temperature limits, but is not tested at – 40°C and at 85°C. The LT1468I-2 is guaranteed to meet the extended temperature limits. Note 5: Slew rate is measured between ±8V on the output with ±12V input for ±15V supplies and ±2V on the output with ±3V input for ±5V supplies. Note 6: Full power bandwidth is calculated from the slew rate measurement: FPBW = SR/2πVP Note 7: This parameter is not 100% tested. TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Supply Voltage and Temperature 7 6 COMMON MODE RANGE (V) SUPPLY CURRENT (mA) 125°C 5 4 25°C 3 –55°C 2 1 0 5 10 15 SUPPLY VOLTAGE (±V) 20 14682 G01 Input Common Mode Range vs Supply Voltage V+ –0.5 –1.0 –1.5 –2.0 TA = 25°C ΔVOS < 100μV INPUT BIAS CURRENT (nA) 80 60 40 20 0 –20 –40 –60 0 3 9 12 6 SUPPLY VOLTAGE (±V) 15 18 Input Bias Current vs Input Common Mode Voltage VS = ±15V TA = 25°C IB– IB+ 2.0 1.5 1.0 0.5 V– –80 –15 –10 –5 5 10 0 INPUT COMMON MODE VOLTAGE (V) 15 14682 G02 14682 G03 14682f 5 LT1468-2 TYPICAL PERFORMANCE CHARACTERISTICS Input Bias Current vs Temperature 30 VS = ±15V 20 INPUT BIAS CURRENT (nA) 10 0 –10 –20 –30 –40 –50 –25 IB+ IB– 1000 INPUT VOLTAGE NOISE (nV/√Hz) VS = ±15V TA = 25°C AV = 101 RS = 100k FOR in 1 Input Noise Spectral Density 10 INPUT CURRENT NOISE (pA/√Hz) 0.1Hz to 10Hz Voltage Noise VS = ±15V 100 in en 10 0.1 50 25 75 0 TEMPERATURE (°C) 100 125 1 1 10 100 1k FREQUENCY (Hz) 10k 0.01 100k 14682 G05 VOLTAGE NOISE (100nV/DIV) TIME (1s/DIV) 14682 G06 14682 G04 Warm-Up Drift vs Time 5 0 OFFSET VOLTAGE DRIFT (μV) 135 OPEN-LOOP GAIN (dB) –5 –10 –15 –20 –25 –30 –35 –40 0 20 40 60 80 100 120 TIME AFTER POWER UP (s) 140 14682 G07 Open-Loop Gain vs Resistive Load 140 160 TA = 25°C VS = ±15V VS = ±5V OPEN-LOOP GAIN (dB) 150 Open-Loop Gain vs Temperature RL = 2k VS = ±15V 140 130 VS = ±5V 120 110 100 90 –50 –25 S0-8 ±5V 130 125 120 115 110 10 100 1k LOAD RESISTANCE (Ω) 10k 14682 G08 S0-8 ±15V 50 25 75 0 TEMPERATURE (°C) 100 125 14682 G09 Output Voltage Swing vs Supply Voltage V+ –1 OUTPUT VOLTAGE SWING (V) –2 –3 –4 4 3 2 1 V – Output Voltage Swing vs Load Current V+ –0.5 –1.0 OUTPUT VOLTAGE SWING (V) –1.5 –2.0 –2.5 25°C –40°C OUTPUT SHORT-CIRCUIT CURRENT (mA) VS = ±15V 60 85°C 55 50 45 40 35 30 25 20 15 Output Short-Circuit Current vs Temperature VS = ±15V VIN = ±0.2V SOURCE SINK RL = 2k RL = 10k 2.5 2.0 1.5 1.0 40°C 25°C RL = 2k TA = 25°C 0 RL = 10k 5 10 15 SUPPLY VOLTAGE (±V) 20 14682 G10 85°C V– 0.5 –20 –15 –10 –5 0 10 5 OUTPUT CURRENT (mA) 15 20 10 –50 –25 50 25 0 75 TEMPERATURE (°C) 100 125 14682 G11 14682 G12 14682f 6 LT1468-2 TYPICAL PERFORMANCE CHARACTERISTICS Open-Loop Gain and Phase vs Frequency 70 60 50 GAIN (dB) 40 30 20 GAIN PHASE 100 80 60 GAIN (dB) 40 20 0 PHASE (DEG) 6 Gain vs Frequency, AV = –1 TA = 25°C 5 AV = –1 4 RF = RG = 2k CF = 6.8pF 3 RL = 500Ω 2 1 0 –1 –2 –3 –40 –60 100M 14682 G13 Output Impedance vs Frequency 100 VS = ±15V TA = 25°C 10 OUTPUT IMPEDANCE (Ω) AV = 100 1 AV = 10 0.1 AV = –1 0.01 CL = 100pF CL = 47pF CL = 22pF NO CL TA = 25°C 10 AV = –1 RF = RG = 5.1k 0 CF = 5pF RL = 2k –10 100k 10k 1M 10M FREQUENCY (Hz) –20 –4 –5 100k 1M 10M FREQUENCY (Hz) 100M 14682 G14 14682 G15 0.001 10k 100k 1M 10M FREQUENCY (Hz) 100M Undistorted Output Swing vs Frequency, VS = ±15V 30 OUTPUT VOLTAGE SWING (VP-P) OUTPUT VOLTAGE SWING (VP-P) 25 AV = –1 20 15 10 VS = ±15V 5 TA = 25°C RL = 2k THD