LT1468IDD-2#TRPBF

LT1468-2 200MHz, 30V/µs 16-Bit Accurate AV ≥ 2 Op Amp Features Description Stable in Gain AV ≥ 2 (AV = –1) n 200MHz Gain Bandwidth Product n 30V/μs Slew Rate n Settling Time: 800ns (10V Step, 150µV) n Specified at ±5V and ±15V Supplies n Low Distortion, – 96.5dB for 100kHz, 10V P-P n Maximum Input Offset Voltage: 75µV n Maximum Input Offset Voltage Drift: 2µV/°C n Maximum (–) Input Bias Current: 10nA n Minimum DC Gain: 1000V/mV n Minimum Output Swing into 2k: ±12.8V n Input Noise Voltage: 5nV/√Hz n Input Noise Current: 0.6pA/√Hz n Total Input Noise Optimized for 1k < R < 20k S n Available in an 8-Lead Plastic SO Package and 8-Lead DFN Package 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. n 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 data sheet. Applications 16-Bit DAC Current-to-Voltage Converter Precision Instrumentation n ADC Buffer n Low Distortion Active Filters n High Accuracy Data Acquisition Systems n Photodiode Amplifiers n n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical Application 16-Bit DAC I-to-V Converter Large Signal Transient, AV = –1 20pF DAC INPUTS 16 6k ® LTC 1597 – LT1468-2 + VS = ±15V AV = –1 RF = RG = 2k CF = 22pF 10V 2k VOUT 50pF 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 2V/DIV 0V 200ns/DIV 14682 TA02 14682fb 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 TOP VIEW NULL 1 8 DNC* 7 V+ –IN 2 6 OUT +IN 3 5 NULL V– 4 – + 8 DNC* 7 V+ 6 VOUT 5 NULL S8 PACKAGE 8-LEAD PLASTIC SO DD PACKAGE 8-LEAD (3mm × 3mm) PLASTIC DFN *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 TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT1468CS8-2#PBF LT1468CS8-2#TRPBF 14682 8-Lead Plastic Small Outline 0°C to 70°C LT1468IS8-2#PBF LT1468IS8-2#TRPBF 14682 8-Lead Plastic Small Outline –40°C to 85°C LT1468ACDD-2#PBF LT1468ACDD-2#TRPBF LDSY 8-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C LT1468AIDD-2#PBF LT1468AIDD-2#TRPBF LDSY 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C LT1468CDD-2#PBF LT1468CDD-2#TRPBF LDSY 8-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C LT1468IDD-2#PBF LT1468IDD-2#TRPBF LDSY 8-Lead (3mm × 3mm) Plastic DFN –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/ electrical characteristics 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 PARAMETER CONDITIONS TYP MAX UNITS VOS Input Offset Voltage S8 Package ±15V ± 5V 30 50 75 175 µV µV LT1468A, DD Package ±15V ± 5V 30 50 75 175 µV µV LT1468, DD Package ±15V ± 5V 100 150 200 300 µV µV ±5V to ±15V 13 50 IOS Input Offset Current VSUPPLY MIN nA 14682fb 2 LT1468-2 Electrical Characteristics 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 PARAMETER – Inverting Input Bias Current + Noninverting Input Bias Current IB CONDITIONS VSUPPLY MIN TYP MAX UNITS ±5V to ±15V 3 ±10 nA ±40 ±5V to ±15V –10 Input Noise Voltage 0.1Hz to 10Hz ±5V to ±15V 0.3 en Input Noise Voltage f = 10kHz ±5V to ±15V 5 nV/√Hz ±5V to ±15V IB in Input Noise Voltage f = 10kHz RIN Input Resistance VCM = ±12.5V Differential CIN Input Capacitance ±15V Input Voltage Range + ±15V ±5V Input Voltage Range – ±15V ±5V CMRR Common Mode Rejection Ratio VCM = ±12.5V VCM = ±2.5V PSRR Power Supply Rejection Ratio VS = ±4.5V to ±15V AVOL Large-Signal Voltage Gain VOUT = ±12.5V, RL = 10k VOUT = ±12.5V, RL = 2k VOUT = ±2.5V, RL = 10k VOUT = ±2.5V, RL = 2k VOUT Output Swing IOUT ±15V ±15V 100 50 12.5 2.5 0.6 pA/√Hz 240 150 MΩ kΩ 4 pF 13.5 3.5 V V –14.3 –4.3 ±15V ±5V nA µVP-P –12.5 –2.5 V V 96 96 110 112 dB dB 100 112 dB ±15V ±15V ±5V ±5V 1000 500 1000 500 9000 5000 6000 3000 V/mV V/mV V/mV V/mV RL = 10k RL = 2k RL = 10k RL = 2k ±15V ±15V ± 5V ±5V ±13.0 ±12.8 ±3.0 ±2.8 ±13.6 ±13.5 ±3.6 ±3.5 V V V V Output Current VOUT = ±12.5V VOUT = ±2.5V ±15V ±5V ±15 ±15 ±22 ±22 mA mA ISC Short-Circuit Current VOUT = 0V, VIN = ±0.2V ±15V ±25 ±40 mA SR Slew Rate RL = 2k (Note 5) ±15V ± 5V 20 15 30 22 V/µs V/µs Full-Power Bandwidth 10V Peak, (Note 6) 3V Peak, (Note 6) ±15V ±5V 475 1160 kHz kHz GBW Gain Bandwidth f = 100kHz, RL = 2k ±15V ±5V 200 190 MHz MHz ts Settling Time 10V Step, 0.01%, AV = –1 10V Step, 150µV, AV = –1 5V Step, 0.01%, AV = –1 ±15V ±15V ±5V 650 800 550 ns ns ns RO Output Resistance AV = –1, f = 100kHz ±15V 0.02 IS Supply Current ±15V ±5V 3.9 3.6 140 130 Ω 5.2 5.0 mA mA 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 PARAMETER CONDITIONS VSUPPLY VOS Input Offset Voltage S8 Package ±15V ± 5V LT1468A, DD Package LT1468, DD Package MIN TYP MAX UNITS ● ● 150 250 µV µV ±15V ± 5V ● ● 150 250 µV µV ±15V ± 5V ● ● 300 400 µV µV 14682fb 3 LT1468-2 Electrical Characteristics 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 PARAMETER CONDITIONS Input VOS Drift (Note 7) ±5V to ±15V ● IOS Input Offset Current ±5V to ±15V ● Input Offset Current Drift ±5V to ±15V – VSUPPLY MIN TYP MAX UNITS 0.7 2.0 µV/°C 65 nA 60 pA/°C Inverting Input Bias Current ±5V to ±15V Negative Input Current Drift ± 5V to ±15V IB+ Noninverting Input Bias Current ±5V to ±15V ● CMRR Common Mode Rejection Ratio VCM = ±12.5V VCM = ±2.5V ±15V ±5V ● ● PSRR Power Supply Rejection Ratio VS = ±4.5V to ±15V ● 98 dB AVOL Large-Signal Voltage Gain VOUT = ±12.5V, RL = 10k VOUT = ±12.5V, RL = 2k VOUT = ±2.5V, RL = 10k VOUT = ±2.5V, RL = 2k ±15V ±15V ±5V ±5V ● ● ● ● 500 250 500 250 V/mV V/mV V/mV V/mV VOUT Output Swing RL = 10k RL = 2k RL = 10k RL = 2k ±15V ±15V ±5V ±5V ● ● ● ● ±12.9 ±12.7 ±2.9 ±2.7 V V V V IOUT Output Current VOUT = ±12.5V VOUT = ±2.5V ±15V ±5V ● ● ±12.5 ±12.5 mA mA ISC Short-Circuit Current VOUT = 0V, VIN = ±0.2V ±15V ● ±17 mA SR Slew Rate RL = 2k (Note 5) ±15V ±5V ● ● 18 13 V/µs V/µs GBW Gain Bandwidth f = 100kHz, RL = 2k ±15V ± 5V ● ● 130 120 IS Supply Current ±15V ±5V ● ● IB ±15 ● 40 nA pA/°C ±50 nA 94 94 dB dB 200 190 MHz MHz 6.5 6.3 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 PARAMETER CONDITIONS VOS Input Offset Voltage S8 Package ±15V ± 5V LT1468A, DD Package LT1468, DD Package Input VOS Drift (Note 7) VSUPPLY MAX UNITS ● ● 230 330 µV µV ±15V ± 5V ● ● 230 330 µV µV ±15V ± 5V ● ● 400 500 µV µV ±5V to ±15V ● 2.5 µV/°C ±5V to ±15V ● 80 nA IOS Input Offset Current Input Offset Current Drift ±5V to ±15V IB– Inverting Input Bias Current ±5V to ±15V Negative Input Current Drift ±5V to ±15V + IB Noninverting Input Bias Current CMRR Common Mode Rejection Ratio VCM = ±12.5V VCM = ±2.5V PSRR Power Supply Rejection Ratio VS = ±4.5V to ±15V ±5V to ±15V ±15V ±5V MIN TYP 0.7 120 pA/°C ±30 ● 80 pA/°C ±60 ● nA nA ● ● 92 92 dB dB ● 96 dB 14682fb 4 LT1468-2 Electrical Characteristics 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 PARAMETER CONDITIONS VSUPPLY AVOL Large-Signal Voltage Gain VOUT = ±12V, RL = 10k VOUT = ±10V, RL = 2k VOUT = ±2.5V, RL = 10k VOUT = ±2.5V, RL = 2k ±15V ±15V ±5V ±5V ● ● ● ● 300 150 300 150 VOUT Output Swing RL = 10k RL = 2k RL = 10k RL = 2k ±15V ±15V ±5V ±5V ● ● ● ● ±12.8 ±12.6 ±2.8 ±2.6 IOUT Output Current VOUT = ±12.5V VOUT = ±2.5V ±15V ±5V ● ● ±7 ±7 mA mA ISC Short-Circuit Current VOUT = 0V, VIN = ±0.2V ±15V ● ±12 mA SR Slew Rate RL = 2k (Note 5) ±15V ±5V ● ● 15 11 V/µs V/µs GBW Gain Bandwidth f = 100kHz, RL = 2k ±15V ±5V ● ● 110 100 IS Supply Current ±15V ±5V ● ● 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. MIN TYP MAX UNITS V/mV V/mV V/mV V/mV V V V V 200 190 MHz MHz 7.0 6.8 mA mA 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 V+ 7 5 4 25°C 3 –55°C 2 80 60 –1.0 INPUT BIAS CURRENT (nA) COMMON MODE RANGE (V) SUPPLY CURRENT (mA) 125°C Input Bias Current vs Input Common Mode Voltage TA = 25°C ΔVOS < 100µV –0.5 6 1 Input Common Mode Range vs Supply Voltage –1.5 –2.0 2.0 1.5 1.0 0 5 10 15 SUPPLY VOLTAGE (±V) 20 14682 G01 40 20 0 –20 IB– IB+ –40 –60 0.5 V– VS = ±15V TA = 25°C 0 3 9 12 6 SUPPLY VOLTAGE (±V) 15 18 14682 G02 –80 –15 –10 –5 5 10 0 INPUT COMMON MODE VOLTAGE (V) 15 14682 G03 14682fb 5 LT1468-2 Typical Performance Characteristics Input Bias Current vs Temperature Input Noise Spectral Density VS = ±15V INPUT VOLTAGE NOISE (nV/√Hz) IB– 0 –10 IB+ –20 –30 –40 –50 –25 50 25 75 0 TEMPERATURE (°C) 100 1 en 10 1 125 in 100 1 10 0.1 100 1k FREQUENCY (Hz) 14682 G06 Open-Loop Gain vs Resistive Load 5 140 –10 –15 –20 –25 S0-8 ±15V 20 40 60 80 100 120 TIME AFTER POWER UP (s) 160 VS = ±15V 125 120 110 140 Output Voltage Swing vs Supply Voltage –1.0 RL = 10k OUTPUT VOLTAGE SWING (V) OUTPUT VOLTAGE SWING (V) –1 –2 –3 –4 4 3 2 RL = 2k 1 RL = 10k V– TA = 25°C 0 5 10 15 SUPPLY VOLTAGE (±V) 10 100 1k LOAD RESISTANCE (Ω) 14682 G10 VS = ±5V 120 110 90 –50 –25 10k 50 25 75 0 TEMPERATURE (°C) 100 VS = ±15V Output Short-Circuit Current vs Temperature 60 85°C 25°C –40°C –2.0 –2.5 2.5 2.0 1.5 V– 0.5 40°C 85°C 125 14682 G09 Output Voltage Swing vs Load Current –1.5 1.0 20 130 14682 G08 V+ –0.5 RL = 2k 140 100 14682 G07 V+ VS = ±15V VS = ±5V 130 RL = 2k 150 115 –35 0 Open-Loop Gain vs Temperature TA = 25°C 135 S0-8 ±5V OPEN-LOOP GAIN (dB) OFFSET VOLTAGE DRIFT (µV) 0 –40 TIME (1s/DIV) 14682 G05 Warm-Up Drift vs Time –30 0.01 100k 10k 14682 G04 –5 VS = ±15V OPEN-LOOP GAIN (dB) INPUT BIAS CURRENT (nA) 10 VS = ±15V TA = 25°C AV = 101 RS = 100k FOR in INPUT CURRENT NOISE (pA/√Hz) 20 0.1Hz to 10Hz Voltage Noise 10 VOLTAGE NOISE (100nV/DIV) 1000 OUTPUT SHORT-CIRCUIT CURRENT (mA) 30 25°C –20 –15 –10 –5 0 10 5 OUTPUT CURRENT (mA) 15 20 14682 G11 55 VS = ±15V VIN = ±0.2V 50 45 SOURCE SINK 40 35 30 25 20 15 10 –50 –25 50 25 0 75 TEMPERATURE (°C) 100 125 14682 G12 14682fb 6 LT1468-2 Typical Performance Characteristics 80 60 PHASE 50 60 GAIN 30 20 0 20 TA = 25°C 10 AV = –1 RF = RG = 5.1k 0 CF = 5pF RL = 2k –10 100k 10k 1M 10M FREQUENCY (Hz) PHASE (DEG) 40 40 GAIN (dB) 6 Gain vs Frequency, AV = –1 TA = 25°C 5 AV = –1 4 RF = RG = 2k CF = 6.8pF 3 RL = 500Ω 2 CL = 100pF CL = 47pF CL = 22pF 1 0 NO CL –1 –2 –20 –3 –40 –5 100k AV = –1 15 10 VS = ±15V 5 TA = 25°C RL = 2k THD