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LT1782 Micropower, Over-The-Top SOT-23, Rail-to-Rail Input and Output Op Amp FEATURES s s s s s s s s s s s s s s DESCRIPTIO Operates with Inputs Above V + Rail-to-Rail Input and Output Micropower: 55A Supply Current Max Small SOT-23 Package Low Input Offset Voltage: 800V Max Single Supply Input Range: 0V to 18V High Output Current: 18mA Min Specified on 3V, 5V and 5V Supplies Output Shutdown on 6-Lead Version Reverse Battery Protection to 18V High Voltage Gain: 1500V/mV Gain Bandwidth Product: 200kHz Slew Rate: 0.07V/s Operating Temperature Range: -40C to 85C The LT(R)1782 is a 200kHz op amp available in the small SOT-23 package that operates on all single and split supplies with a total voltage of 2.5V to 18V. The amplifier draws less than 55A of quiescent current and has reverse battery protection, drawing negligible current for reverse supply voltages up to 18V. The input range of the LT1782 includes ground, and a unique feature of this device is its Over-The-TopTM operation capability with either or both of its inputs above the positive rail. The inputs handle 18V both differential and common mode, independent of supply voltage. The input stage incorporates phase reversal protection to prevent false outputs from occurring even when the inputs are 9V below the negative supply. The LT1782 can drive loads up to 18mA and still maintain rail-to-rail capability. A shutdown feature on the 6-lead version can disable the part, making the output high impedance and reducing quiescent current to 5A. The LT1782 op amp is available in the 5- and 6-lead SOT-23 packages. For applications requiring higher speed, refer to the LT1783. , LTC and LT are registered trademarks of Linear Technology Corporation. Over-The-Top is a trademark of Linear Technology Corporation. APPLICATIO S s s s s s s s Portable Instrumentation Battery- or Solar-Powered Systems Sensor Conditioning Supply Current Sensing Battery Monitoring MUX Amplifiers 4mA to 20mA Transmitters TYPICAL APPLICATIO V+ 5V TO 18V 200 5V 0.2 200 Distribution of Input Offset Voltage 25 VS = 5V, 0V VCM = 2.5V Positive Supply Rail Current Sense PERCENTAGE OF AMPLIFIERS 20 15 + LT1782 2N3904 VOUT = 2(ILOAD) 0V TO 4.3V 2k 1782 TA01 10 - 5 LOAD ILOAD 0 -900 -600 -300 0 300 600 INPUT OFFSET VOLTAGE (V) U 900 1782 TA01a U U 1 LT1782 ABSOLUTE MAXIMUM RATINGS Total Supply Voltage (V + to V -) .............................. 18V Input Differential Voltage ........................................ 18V Input Pin Voltage to V - ............................... + 24V/-10V Shutdown Pin Voltage Above V - ............................ 18V Shutdown Pin Current ....................................... 10mA Output Short-Circuit Duration (Note 2) ........... Indefinite PACKAGE/ORDER INFORMATION TOP VIEW OUT 1 V- 2 +IN 3 +- 5V + ORDER PART NUMBER LT1782CS5 S5 PART MARKING LTLD 4 -IN S5 PACKAGE 5-LEAD PLASTIC SOT-23 TJMAX = 150C, JA = 250C/ W Consult factory for Industrial and Military grade parts. ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the specified temperature range, otherwise specifications are TA = 25C. VS = 3V, 0V; VS = 5V, 0V, VCM = VOUT = half supply, for the 6-lead part VPIN5 = 0V, pulse power tested unless otherwise specified. SYMBOL PARAMETER VOS Input Offset Voltage Input Offset Voltage Drift (Note 7) IOS IB Input Offset Current VCM = 18V (Note 3) Input Bias Current VCM = 18V (Note 3) SHDN or VS = 0V, VCM = 0V to 18V Input Bias Current Drift Input Noise Voltage en in RIN Input Noise Voltage Density Input Noise Current Density Input Resistance 0C TA 70C 0.1Hz to 10Hz f = 1kHz f = 1kHz Differential Common Mode, VCM = 0V to (VCC - 1V) Common Mode, VCM = 0V to 18V q CONDITIONS TA = 25C 0C TA 70C 0C TA 70C q q q q q q q CIN CMRR PSRR AVOL Input Capacitance Input Voltage Range Common Mode Rejection Ratio (Note 3) Power Supply Rejection Ratio Large-Signal Voltage Gain VCM = 0V to VCC - 1V VCM = 0V to 18V (Note 6) VS = 3V to 12.5V, VCM = VO = 1V VS = 3V, VO = 500mV to 2.5V, RL = 10k VS = 3V, 0C TA 70C VS = 5V, VO = 500mV to 4.5V, RL = 10k VS = 5V, 0C TA 70C 0 90 68 90 200 133 400 250 q q q q q 2 U U W WW U W (Note 1) Operating Temperature Range (Note 10) - 40C to 85C Specified Temperature Range ...................... 0C to 70C Junction Temperature........................................... 150C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec)................. 300C TOP VIEW OUT 1 V- 2 +IN 3 +- + 6V ORDER PART NUMBER LT1782CS6 S6 PART MARKING LTIS 5 SHDN 4 -IN S6 PACKAGE 6-LEAD PLASTIC SOT-23 TJMAX = 150C, JA = 230C/ W MIN TYP 400 2 0.7 8 6 0.1 0.01 1 50 0.05 MAX 800 950 5 2 1 15 12 UNITS V V V/C nA A nA A nA nA/C VP-P nV/Hz pA/Hz M G M pF 3.4 1.5 6.5 5 3 5 18 100 80 100 1500 1500 V dB dB dB V/mV V/mV V/mV V/mV LT1782 ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the specified temperature range, otherwise specifications are TA = 25C. VS = 3V, 0V; VS = 5V, 0V, VCM = VOUT = half supply, for the 6-lead part VPIN5 = 0V, pulse power tested unless otherwise specified. SYMBOL PARAMETER VOL Output Voltage Swing LOW CONDITIONS No Load ISINK = 5mA VS = 5V, ISINK = 10mA VS = 3V, No Load VS = 3V, ISOURCE = 5mA VS = 5V, No Load VS = 5V, ISOURCE = 10mA ISC Short-Circuit Current (Note 2) VS = 3V, Short to GND VS = 3V, Short to VCC VS = 5V, Short to GND VS = 5V, Short to VCC Minimum Supply Voltage Reverse Supply Voltage IS Supply Current (Note 4) Supply Current, SHDN ISHDN Shutdown Pin Current VPIN5 = 2V, No Load (Note 8) VPIN5 = 0.3V, No load (Note 8) VPIN5 = 2V, No Load (Note 8) VPIN5 = 5V, No Load (Note 8) VPIN5 = 2V, No Load (Note 8) VPIN5 = 18V, No Load (Note 8) (Note 8) (Note 8) VPIN5 = 5V to 0V, RL = 10k (Note 8) VPIN5 = 0V to 5V, RL = 10k (Note 8) f = 5kHz 0C TA 70C AV = -1, RL = 0C TA 70C VS = 5V, VOUT = 2V to 0.1%, AV = -1 VS = 3V, VO = 2VP-P, AV = 1, RL = 10k, f =1kHz VOUT = 2VP-P q q q q q q q q q q MIN TYP 3 200 400 MAX 8 500 800 UNITS mV mV mV V V V V mA mA mA mA VOH Output Voltage Swing HIGH 2.91 2.6 4.91 4.5 5 15 15 20 2.94 2.8 4.94 4.74 10 30 30 40 2.5 2.7 55 60 15 8 1 30 0.3 V V A A A nA A A A A V V s s kHz kHz V/s V/s s % kHz IS = -100A q q q q q q q q q q 18 40 5 0.5 2 5 0.05 10 2 100 6 110 100 0.035 0.031 200 0.07 45 0.003 11 Shutdown Output Leakage Current Maximum Shutdown Pin Current VL VH tON tOFF GBW SR tS THD FPBW Shutdown Pin Input Low Voltage Shutdown Pin Input High Voltage Turn-On Time Turn-Off Time Gain Bandwidth Product (Note 3) Slew Rate (Note 5) Settling Time Distortion Full-Power Bandwidth (Note 9) VS = 5V, VCM = 0V,VOUT = 0V, for the 6-lead part VSHDN = V - VOS Input Offset Voltage Input Offset Voltage Drift (Note 7) IOS IB Input Offset Current Input Bias Current Input Bias Current Drift Input Noise Voltage en in Input Noise Voltage Density Input Noise Current Density 0C TA 70C 0.1Hz to 10Hz f = 1kHz f = 1kHz TA = 25C 0C TA 70C 0C TA 70C 500 q q q q q 900 1050 5 2 15 V V V/C nA nA nA/C VP-P nV/Hz pA/Hz 2 0.7 8 0.01 1 50 0.05 3 LT1782 ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the specified temperature range, otherwise specifications are TA = 25C. VS = 5V, VCM = 0V,VOUT = 0V, for the 6-lead part VSHDN = V-, unless otherwise specified. SYMBOL PARAMETER RIN CIN CMRR AVOL VOL Input Resistance Input Capacitance Input Voltage Range Common Mode Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing LOW VCM = -5V to 13V VO = 4V, RL= 10k 0C TA 70C No Load ISINK = 5mA ISINK = 10mA No Load ISOURCE = 5mA ISOURCE = 10mA Short to GND 0C TA 70C VS = 1.5V to 9V q q q q q q q q q q q q CONDITIONS Differential Common Mode, VCM = -5V to 13V q q MIN 3.4 1.5 -5 68 55 40 TYP 6.5 3 5 MAX UNITS M M pF 13 80 150 -4.997 -4.8 -4.6 -4.992 -4.5 -4.2 V dB V/mV V/mV V V V V V V mA mA dB VOH Output Voltage Swing HIGH 4.91 4.6 4.5 18 15 90 4.94 4.8 4.74 30 100 45 60 65 20 8 30 1 -4.7 ISC PSRR IS Short-Circuit Current (Note 2) Power Supply Rejection Ratio Supply Current Supply Current, SHDN A A A nA A A A V V s s kHz kHz V/s V/s s kHz VPIN5 = -3V, VS = 5V, No Load (Note 8) VPIN5 = -4.7V, VS = 5V, No load (Note 8) VPIN5 = -3V, VS = 5V, No Load (Note 8) VPIN5 = 9V, VS = 9V (Note 8) VPIN5 = -7V, VS = 9V, No Load (Note 8) VS = 5V (Note 8) VS = 5V (Note 8) VPIN5 = 0V to -5V, RL = 10k (Note 8) VPIN5 = -5V to 0V, RL = 10k (Note 8) f = 5kHz 0C TA 70C AV = -1, RL = , VO = 4V, Measured at VO = 2V 0C TA 70C VOUT = 4V to 0.1%, AV = 1 VOUT = 8VP-P q q q q q q q q q q q 6 0.5 2 10 0.05 -3 100 6 120 110 0.0375 0.033 225 0.075 50 3 ISHDN Shutdown Pin Current Maximum Shutdown Pin Current Shutdown Output Leakage Current VL VH tON tOFF GBW SR tS FPBW Shutdown Pin Input Low Voltage Shutdown Pin Input High Voltage Turn-On Time Turn-Off Time Gain Bandwidth Product Slew Rate Settling Time Full-Power Bandwidth (Note 9) Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: A heat sink may be required to keep the junction temperature below absolute maximum. Note 3: VS = 5V limits are guaranteed by correlation to VS = 3V and VS = 5V or VS = 9V tests. Note 4: VS = 3V limits are guaranteed by correlation to VS = 5V and VS = 5V or VS = 9V tests. Note 5: Guaranteed by correlation to slew rate at VS = 5V, and GBW at VS = 3V and VS = 5V tests. Note 6: This specification implies a typical input offset voltage of 1.8mV at VCM = 18V and a maximum input offset voltage of 7.2mV at VCM = 18V. Note 7: This parameter is not 100% tested. Note 8: Specifications apply to 6-lead SOT-23 with shutdown. Note 9: Full-power bandwidth is calculated for the slew rate. FPBW = SR/2VP. Note 10: The LT1782 is guaranteed functional over the operating temperature range - 40C to 85C. 4 LT1782 TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Supply Voltage 50 INPUT OFFSET VOLTAGE CHANGE (V) TA = 125C 45 SUPPLY CURRENT (A) 40 35 30 25 20 2 4 6 8 10 12 14 SUPPLY VOLTAGE (V) 16 18 TA = 25C TA = -55C 0 TA = 125C -100 -200 -300 -400 0 1 2 3 4 TOTAL SUPPLY VOLTAGE (V) 5 1782 G02 TA = -55C TA = 25C VOUT (V) Input Bias Current vs Common Mode Voltage 6000 5000 4000 INPUT BIAS CURRENT (nA) VS = 5V, 0V OUTPUT SATURATION VOLTAGE (V) TA = 125C 3000 2000 1000 40 30 20 10 0 -10 15 16 18 3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 COMMON MODE VOLTAGE (V) 1782 G03 OUTPUT SATURATION VOLTAGE (V) TA = 25C TA = -55C Output Saturation Voltage vs Input Overdrive 100 OUTPUT SATURATION VOLTAGE (mV) 40 OUTPUT HIGH 35 OUTPUT CURRENT (mA) SINKING CURRENT 30 SOURCING CURRENT 25 10 OUTPUT LOW VS = 2.5V NO LOAD 1 0 10 20 30 40 50 INPUT OVERDRIVE (mV) 60 1782 G06 20 15 -50 -25 0 25 50 75 TEMPERATURE (C) 100 125 NOISE VOLTAGE (400nV/DIV) UW 1782 G01 Minimum Supply Voltage 400 300 200 100 4 5 Output Voltage vs Large Input Voltage VS = 5V, 0V 3 5V VIN 1 + - 2 0 -10-8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 VIN (V) 1782 G02a Output Saturation Voltage vs Load Current (Output High) 1 VS = 2.5V VOD = 30mV 1 Output Saturation Voltage vs Load Current (Output Low) VS = 2.5V VOD = 30mV 0.1 TA = 125C TA = 125C 0.1 TA = 25C TA = -55C TA = 25C 0.01 TA = -55C 0.01 1 0.001 10 100 1m SOURCING LOAD CURRENT (A) 10m 1782 G04 1 10 1 1m SINKING LOAD CURRENT (A) 10m 1782 G05 Output Short-Circuit Current vs Temperature VS = 5V 0.1Hz to 10Hz Noise Voltage VS = 2.5V 0 1 2 3 456 TIME (sec) 7 8 9 10 1782 G06a 1782 G07 5 LT1782 TYPICAL PERFOR A CE CHARACTERISTICS Noise Voltage Density vs Frequency 80 INPUT NOISE VOLTAGE DENSITY (nV/Hz) INPUT NOISE CURRENT DENSITY (pA/Hz) 70 60 50 40 30 20 GAIN (dB) 1 10 100 1k FREQUENCY (Hz) Gain Bandwidth Product vs Temperature 230 220 GAIN BANDWIDTH (kHz) 210 200 190 180 170 -50 f = 5kHz VS = 2.5V 0.11 0.10 SLEW RATE (V/s) 0.09 0.08 FALLING 0.07 0.06 0.05 0.04 -50 GAIN BAINDWIDTH PRODUCT (kHz) -25 0 25 50 75 TEMPERATURE (C) Gain Bandwidth Product and Phase Margin vs Load Resistance 70 PHASE MARGIN GAIN BANDWIDTH PRODUCT (kHz) POWER SUPPLY REJECTION RATIO (dB) 60 50 80 70 60 50 40 30 20 10 0 1k COMMON MODE REJECTION RATIO (dB) 250 200 150 100 50 1k VS = 2.5V AV = -1 RF = RG = 10k f = 5kHz GAIN BANDWIDTH PRODUCT 10k LOAD RESISTANCE () 6 UW 10k 1782 G08 Input Noise Current vs Frequency 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 1 10 100 1k FREQUENCY (Hz) 10k 1782 G09 Gain and Phase Shift vs Frequency 70 100 VS = 2.5V PHASE 80 60 40 20 GAIN 0 -20 -40 -60 -80 1k 10k 100k FREQUENCY (Hz) -100 1M 1782 G10 VS = 2.5V 60 50 40 30 20 10 0 -10 -20 -30 PHASE SHIFT (DEG) Slew Rate vs Temperature VS = 2.5V RISING 240 220 200 180 160 Gain Bandwidth Product and Phase Margin vs Supply Voltage PHASE MARGIN (DEG) 60 55 50 PHASE MARGIN GAIN BANDWIDTH PRODUCT AV = -1 RF = RG = 10k f = 5kHz 0 2 4 6 8 10 12 14 16 TOTAL SUPPLY VOLTAGE (V) 18 100 125 -25 0 25 50 75 TEMPERATURE (C) 100 125 1782 G11 1782 G12 1782 G13 PSRR vs Frequency 90 VS = 2.5V 110 100 90 80 70 60 50 40 30 PHASE MARGIN (DEG) CMRR vs Frequency VS = 2.5V POSITIVE SUPPLY NEGATIVE SUPPLY -10 100k 1782 G14 10k 100k FREQUENCY (Hz) 1M 1782 G15 1k 10k FREQUENCY (Hz) 100k 1782 G16 LT1782 TYPICAL PERFOR A CE CHARACTERISTICS Output Impedance vs Frequency 10k VS = 2.5V OUTPUT IMPEDANCE () OUTPUT IMPEDANCE () 1k AV = 100 AV = 10 OUTPUT STEP (V) 100 10 AV = 1 1 0.1 100 1k 10k 100k FREQUENCY (Hz) Capacitive Load Handling Overshoot vs Capacitive Load 40 35 30 OVERSHOOT (%) 12 VS = 5V, 0V VCM = 2.5V OUTPUT SWING (VP-P) 25 20 15 10 5 0 10 100 1000 CAPACITIVE LOAD (pF) 10000 1782 G19 6 4 2 VS = 1.5V AV = 1 AV = 5 AV = 10 THD + NOISE (%) Total Harmonic Distortion + Noise vs Load Resistance 10 VS = 3V TOTAL AV = 1 VIN = 2VP-P AT 1kHz VS = 1.5V VIN = 1V 0.1 VS = 3V, 0V VIN = 0.5V TO 2.5V 0.01 VS = 3V, 0V VIN = 0.2V TO 2.2V THD + NOISE (%) f = 1kHz, RL = 10k AV = 1 VS = 1.5V VCM = 0V AV = -1, RF = RG = 100k VS = 1.5V VCM = 0V INPUT OFFSET VOLTAGE CHANGE (50V/DIV) 1 THD + NOISE (%) 0.001 100 1k 10k LOAD RESISTANCE TO GROUND () UW 1M 1782 G17 Disabled Output Impedance vs Frequency (Note 8) 1M VS = 2.5V VPIN5 (SHUTDOWN) = 2.5V 100k 4 3 2 1 0 -1 -2 Settling Time to 0.1% vs Output Step AV = 1 AV = -1 10k VS = 5V 1k AV = 1 -3 100 100 1k 10k 100k FREQUENCY (Hz) 1M 1782 G17a AV = -1 -4 25 30 35 40 50 60 SETTLING TIME (s) 70 80 1782 G18 Undistorted Output Swing vs Frequency 1 Total Harmonic Distortion + Noise vs Frequency VS = 3V, 0V VOUT = 2VP-P VCM = 1.2V RL = 10k 10 8 VS = 5V DISTORTION 1% AV = 1 0.1 0.010 AV = -1 RF = RG = 100k AV = 1 0 100 0.001 1k 10k FREQUENCY (Hz) 100k 1782 G20 10 1k 100 FREQUENCY (Hz) 10k 1782 G21 Total Harmonic Distortion + Noise vs Output Voltage Amplitude 10 Open-Loop Gain VS = 5V 1 RL = 10k RL = 50k 0.1 0.01 AV = 1 VS = 3V. 0V VCM = 1.5V 0 AV = -1, RF = RG = 100k VS = 3V, 0V VCM = 1.5V 3 RL = 2k 0.001 100k 1 2 OUTPUT VOLTAGE AMPLITUDE (VP-P) -6 -5 -4 -3 -2 -1 0 1 2 3 OUTPUT VOLTAGE (V) 4 5 6 1782 G22 1782 G23 1782 G24 7 LT1782 TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Shutdown Voltage 50 TA = 125C 40 SUPPLY CURRENT (A) TA = 25C 30 TA = -55C 20 VS = 5V, 0V 10 0 0 0.5 1 1.5 2 SHUTDOWN PIN VOLTAGE (V) 2.5 1782 G25 APPLICATIO S I FOR ATIO Supply Voltage The positive supply pin of the LT1782 should be bypassed with a small capacitor (typically 0.1F) within an inch of the pin. When driving heavy loads, an additional 4.7F electrolytic capacitor should be used. When using split supplies, the same is true for the negative supply pin. The LT1782 is protected against reverse battery voltages up to 18V. In the event a reverse battery condition occurs, the supply current is typically less than 1nA. Inputs The LT1782 has two input stages, NPN and PNP (see the Simplified Schematic), resulting in three distinct operating regions as shown in the Input Bias Current vs Common Mode typical performance curve. For input voltages about 0.8V or more below V +, the PNP input stage is active and the input bias current is typically -8nA. When the input common mode voltage is within 0.5V of the positive rail, the NPN stage is operating and the input bias current is typically 15nA. Increases in temperature will cause the voltage at which operation switches from the PNP input stage to the NPN input stage to move towards V +. The input offset voltage of the NPN stage is untrimmed and is typically 1.8mV. 8 U W UW Large-Signal Response Small-Signal Response VS = 5V AV = 1 CL = 15pF 1782 G26 VS = 5V AV = 1 CL = 15pF 1782 G27 U U A Schottky diode in the collector of the input NPN transistors, along with special geometries for these NPN transistors, allows the LT1782 to operate with either or both of its inputs above V +. At about 0.3V above V +, the NPN input transistor is fully saturated and the input bias current is typically 4A at room temperature. The input offset voltage is typically 1.8mV when operating above V +. The LT1782 will operate with its inputs 18V above V - regardless of V +. The inputs are protected against excursions as much as 10V below V - by an internal 6k resistor in series with each input and a diode from the input to the negative supply. The input stage of the LT1782 incorporates phase reversal protection to prevent the output from phase reversing for inputs up to 9V below V -. There are no clamping diodes between the inputs and the maximum differential input voltage is 18V. Output The output of the LT1782 can swing to within 60mV of the positive rail with no load and within 3mV of the negative rail with no load. When monitoring voltages within 60mV of the positive rail or within 3mV of the negative rail, gain should be taken to keep the output from clipping. The LT1782 can sink and source over 30mA at 5V supplies, LT1782 APPLICATIO S I FOR ATIO sourcing current is reduced to 10mA at 3V total supplies as noted in the Electrical Characteristics. The LT1782 is internally compensated to drive at least 600pF of capacitance under any output loading conditions. A 0.22F capacitor in series with a 150 resistor between the output and ground will compensate these amplifiers for larger capacitive loads, up to 10,000pF, at all output currents. Distortion There are two main contributors to distortion in op amps: output crossover distortion as the output transitions from sourcing to sinking current, and distortion caused by nonlinear common mode rejection. If the op amp is operating inverting, there is no common mode induced distortion. If the op amp is operating in the PNP input stage (input is not within 0.8V of V +), the CMRR is very good, typically 100dB. When the LT1782 switches between input stages, there is significant nonlinearity in the CMRR. Lower load resistance increases the output crossover distortion but has no effect on the input stage transition distortion. For lowest distortion, the LT1782 should be SI PLIFIED SCHE ATIC V+ Q1 D1 SHDN R1 30k Q4 J1 - IN Q17 2A +IN Q26 Q9 Q10 Q13 Q14 R3 6k Q7 Q8 Q11 Q12 Q16 Q15 Q21 Q18 Q20 OUT R2 6k Q2 D3 Q3 Q22 + Q25 Q23 Q24 Q5 Q6 D4 U operated single supply, with the output always sourcing current and with the input voltage swing between ground and (V + - 0.8V). See the Typical Performance Characteristics curves, "Total Harmonic Distortion + Noise vs Ouput Voltage Amplitude." Gain The open-loop gain is almost independent of load when the output is sourcing current. This optimizes performance in single supply applications where the load is returned to ground. The typical performance curve of open-loop gain for various loads shows the details. Shutdown The 6-lead part includes a shutdown feature that disables the part, reducing quiescent current and making the output high impedance. The part can be shut down by bringing the SHDN pin 1.2V or more above V -. When shut down, the supply current is about 5A and the output leakage current is less than 1A (V - VOUT V +). In normal operation, the SHDN pin can be tied to V - or left floating. See the Typical Performance Characteristics curves, "Supply Current vs Shutdown Pin Voltage." Q19 D5 R4 40k R5 40k V- 1782 SS W W U U W 9 LT1782 PACKAGE DESCRIPTIO 0.35 - 0.55 (0.014 - 0.022) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DIMENSIONS ARE INCLUSIVE OF PLATING 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 4. MOLD FLASH SHALL NOT EXCEED 0.254mm 5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ) 10 U Dimensions in inches (millimeters) unless otherwise noted. S5 Package 5-Lead Plastic SOT-23 (LTC DWG # 05-08-1633) 2.80 - 3.00 (0.110 - 0.118) (NOTE 3) 2.60 - 3.00 (0.102 - 0.118) 1.50 - 1.75 (0.059 - 0.069) 1.90 (0.074) REF 0.00 - 0.15 (0.00 - 0.006) 0.95 (0.037) REF 0.90 - 1.45 (0.035 - 0.057) 0.09 - 0.20 (0.004 - 0.008) (NOTE 2) 0.35 - 0.50 0.90 - 1.30 (0.014 - 0.020) (0.035 - 0.051) FIVE PLACES (NOTE 2) S5 SOT-23 0599 LT1782 PACKAGE DESCRIPTIO 0.35 - 0.55 (0.014 - 0.022) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DIMENSIONS ARE INCLUSIVE OF PLATING 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 4. MOLD FLASH SHALL NOT EXCEED 0.254mm 5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ) 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. U Dimensions in inches (millimeters) unless otherwise noted. S6 Package 6-Lead Plastic SOT-23 (LTC DWG # 05-08-1634) 2.80 - 3.00 (0.110 - 0.118) (NOTE 3) PIN 1 1.90 (0.074) REF 0.00 - 0.15 (0.00 - 0.006) 0.95 (0.037) REF 2.6 - 3.0 (0.110 - 0.118) 1.50 - 1.75 (0.059 - 0.069) 0.90 - 1.45 (0.035 - 0.057) 0.09 - 0.20 (0.004 - 0.008) (NOTE 2) 0.35 - 0.50 0.90 - 1.30 (0.014 - 0.020) (0.035 - 0.051) SIX PLACES (NOTE 2) S6 SOT-23 0898 11 LT1782 TYPICAL APPLICATIO S Current Source VCC INPUT DIFFERENTIAL VOLTAGE INPUT BELOW GROUND 1782 TA03 RELATED PARTS PART NUMBER LT1783 LT1490/LT1491 LT1636 LT1638/LT1639 DESCRIPTION Micropower Over-The-Top SOT-23 Rail-to-Rail Input and Output Op Amp Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps Single Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp Dual/Quad, 1.2MHz, 0.4V/s, Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps COMMENTS SOT-23 Package, Micropower 210A per Amplifier, Rail-to-Rail Input and Output , 1.25MHz GBW Single Supply Input Range: -0.4V to 44V, Micropower 50A per Amplifier, Rail-to-Rail Input and Output , 200kHz GBW 55A Supply Current, VCM Extends 44V Above VEE, Independent of VCC, MSOP Package, Shutdown Function 170A Supply Current, Single Supply Input Range: -0.4V to 44V, Rail-to-Rail Input and Output 1782f LT/TP 0400 4K * PRINTED IN USA 12 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408)432-1900 q FAX: (408) 434-0507 q www.linear-tech.com + U LT1634-1.25 R1 + LT1782 2N3906 1.25V R1 1782 TA02 - IOUT = Protected Fault Conditions OK! -18V V+ LT1782 LT1782 OK! 5V 24V + REVERSE BATTERY INPUT OVERVOLTAGE OK! 5V OK! 5V 18V + LT1782 LT1782 10V (c) LINEAR TECHNOLOGY CORPORATION 1999 |
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