LTC6258/LTC6259/LTC6260 1.3MHz, 20µA Power Efficient Rail-to-Rail I/O Op Amps DESCRIPTION FEATURES n n n n n n n n n n n n n n Gain Bandwidth Product: 1.3MHz Low Quiescent Current: 20µA C-Load™ Op Amp Drives all Capacitive Loads Offset Voltage: 400µV Maximum Rail-to-Rail Input and Output Supply Voltage Range: 1.8V to 5.25V EMI Rejection Ratio: 45dB at 1GHz Input Bias Current: 75nA Maximum CMRR/PSRR: 95dB/90dB Shutdown Current: 7µA Maximum Operating Temperature Range: –40°C to 125°C Single in 6-Lead TSOT-23, 2mm × 2mm DFN Packages Dual in 8-Lead MS8, MS10, TS0T-23, 2mm × 2mm DFN Packages Quad in MS16 Package APPLICATIONS n n n n The LTC®6258/LTC6259/LTC6260 are single/dual/quad operational amplifiers with low noise, low power, low supply voltage, and rail-to-rail inputs and outputs. They are unity gain stable with or without capacitive loads. They feature 1.3MHz gain-bandwidth product, 0.24V/µs slew rate while consuming only 20µA of supply current per amplifier operating on supply voltages ranging from 1.8V to 5.25V. The combination of low supply current, low supply voltage, high gain bandwidth product and low noise makes the LTC6258 family unique among rail-to-rail input/output op amps with similar supply current. These operational amplifiers are ideal for power efficient applications. For applications that require power-down, the LTC6258 in 2mm × 2mm DFN and LTC6259 MS10 packages respectively offer shutdown which reduces the current consumption to 7µA maximum. The LTC6258 family can be used as plug-in replacements for many commercially available op amps to reduce power and improve input/output range and performance. Micropower Active Filters Portable Instrumentation Battery or Solar Powered Systems Automotive Electronics L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Over-The-Top and C-Load are trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Low Noise Reference Reference Buffer Noise Density 5000 5V LT6656 IN OUT GND – + 22µF OP AMP, 44µF CLOAD OP AMP FILTERED REFERENCE REFERENCE OUTPUT INSTRUMENT ONLY 4500 OUT LTC6258 22µF 22µF 6258960 TA01 4000 NOISE DENSITY (nV/√Hz) V+ RIN1 2.7k 3500 3000 2500 2000 * 2.7K + 22µF FILTER 1500 1000 500 0 0.01 0.1 1 10 FREQUENCY (kHz) 100 6258960 TA01a 6258960fa For more information www.linear.com/LTC6258 1 LTC6258/LTC6259/LTC6260 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage: V+ – V–............................................5.5V Input Voltage .................................... V– – 0.2 to V+ + 0.2 Input Current: +IN, –IN, SHDN (Note 2)................ ±10mA Output Current: OUT............................................ ±20mA Output Short-Circuit Duration (Note 3)............. Indefinite Operating Temperature Range (Note 4)...... –40°C to 125°C Specified Temperature Range (Note 5) LTC6258I/LTC6259I/LTC6260I.............–40°C to 85°C LTC6258H/LTC6259H/LTC6260H....... –40°C to 125°C Maximum Junction Temperature........................... 150°C Storage Temperature Range................... –65°C to 150°C Lead Temperature (Soldering, 10 sec) TS8, MS8, MS only................................................ 300°C PIN CONFIGURATION TOP VIEW TOP VIEW 7 V– +IN 2 V– 3 8 V+ OUTA 1 6 OUT –INA 2 5 –IN 4 SHDN 5 +INB DC PACKAGE 8-LEAD (2mm × 2mm × 0.8mm) PLASTIC DFN TJMAX = 150°C, qJA = 80°C/W (NOTE 6) EXPOSED PAD (PIN 9) IS V–, MUST BE SOLDERED TO PCB TJMAX = 150°C, qJA = 80°C/W (NOTE 6) EXPOSED PAD (PIN 7) IS V–, MUST BE SOLDERED TO PCB TOP VIEW 1 2 3 4 8 7 6 5 – + 6 –INB V– 4 DC PACKAGE 6-LEAD (2mm × 2mm × 0.8mm) PLASTIC DFN + – OUTA –INA +INA V– 7 OUTB 9 V– +INA 3 TOP VIEW V+ OUTB –INB +INB OUTA –INA +INA V– 1 2 3 4 – + 8 7 6 5 + – V+ 1 V+ OUTB –INB +INB MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150°C, qJA = 163°C/W (NOTE 6) TS8 PACKAGE 8-LEAD PLASTIC TSOT-23 TJMAX = 150°C, qJA = 195°C/W (NOTE 6) TOP VIEW 1 2 3 4 5 – + + – OUTA –INA +INA V– SHDNA 10 9 8 7 6 OUTA –INA +INA V+ +INB –INB OUTB NC V+ OUTB –INB +INB SHDNB MS PACKAGE 10-LEAD PLASTIC MSOP TJMAX = 150°C, qJA = 160°C/W (NOTE 6) 1 2 3 4 5 6 7 8 – + + – + – TOP VIEW + – 16 15 14 13 12 11 10 9 OUTD –IND +IND V– +INC –INC OUTC NC MS PACKAGE 16-LEAD PLASTIC MSOP TJMAX = 150°C, qJA = 125°C/W (NOTE 6) TOP VIEW 6 V+ V– 2 +IN 3 + – OUT 1 5 SHDN 4 –IN S6 PACKAGE 6-LEAD PLASTIC TSOT-23 TJMAX = 150°C, qJA = 192°C/W (NOTE 6) 6258960fa 2 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 ORDER INFORMATION http://www.linear.com/product/LTC6258#orderinfo TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LTC6258IS6#TRMPBF LTC6258IS6#TRPBF LTGWD 6-Lead Plastic TSOT-23 –40°C to 85°C LTC6258HS6#TRMPBF LTC6258HS6#TRPBF LTGWD 6-Lead Plastic TSOT-23 –40°C to 125°C LTC6258IDC#TRMPBF LTC6258IDC#TRPBF LGZS 6-Lead Plastic DFN (2mm × 2mm × 0.8mm) –40°C to 85°C LTC6258HDC#TRMPBF LTC6258HDC#TRPBF LGZS 6-Lead Plastic DFN (2mm × 2mm × 0.8mm) –40°C to 125°C LTC6259ITS8#TRMPBF LTC6259ITS8#TRPBF LTGWX 8-Lead Plastic TSOT-23 –40°C to 85°C LTC6259HTS8#TRMPBF LTC6259HTS8#TRPBF LTGWX 8-Lead Plastic TSOT-23 –40°C to 125°C LTC6259IDC#TRMPBF LTC6259IDC#TRPBF LGWT 8-Lead (2mm × 2mm × 0.8mm) Plastic DFN –40°C to 85°C LTC6259HDC#TRMPBF LTC6259HDC#TRPBF LGWT 8-Lead (2mm × 2mm × 0.8mm) Plastic DFN –40°C to 125°C LTC6259IMS8#PBF LTC6259IMS8#TRPBF LTGWW 8-Lead Plastic MSOP –40°C to 85°C LTC6259HMS8#PBF LTC6259HMS8#TRPBF LTGWW 8-Lead Plastic MSOP –40°C to 125°C LTC6259IMS#PBF LTC6259IMS8#TRPBF LTGWY 10-Lead Plastic MSOP –40°C to 85°C LTC6259HMS#PBF LTC6259HMS8#TRPBF LTGWY 10-Lead Plastic MSOP –40°C to 125°C LTC6260IMS#PBF LTC6260IMS#TRPBF 6260 16-Lead Plastic MSOP –40°C to 85°C TUBE LTC6260HMS#PBF LTC6260HMS#TRPBF 6260 16-Lead Plastic MSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Parts ending with PBF are RoHS and WEEE Compliant. 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/. 5V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VSUPPLY = 5V, VCM = VOUT = VSUPPLY/2, CL = 10pF, VSHDN is unconnected. SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS VCM = V – + 0.3V VCM = V + – 0.3V ∆VOS/∆T IB IOS en Input Offset Voltage Drift Input Bias Current (Note 7) Input Offset Current MIN TYP MAX UNITS –400 100 400 1000 µV µV –400 100 400 1000 µV µV l –1000 l –1000 VCM = V – + 0.3V, V+ – 0.3V 1.5 µV/°C = V – + 0.3V l –75 –5 75 nA VCM = V + – 0.3V l –75 0 75 nA VCM = V – + 0.3V l –75 –1 75 nA VCM = V + – 0.3V l –75 –1 75 VCM Input Voltage Noise Density f = 1kHz Input Noise Voltage f = 0.1Hz to 10Hz in Input Current Noise Density RIN Input Resistance f = 1kHz, VCM = 0V to 4V f = 1kHz, VCM = 4V to 5V Differential Common Mode 38 1 10 nA nV/√Hz 2 µVP-P 500 500 fA/√Hz fA/√Hz MΩ MΩ 6258960fa For more information www.linear.com/LTC6258 3 LTC6258/LTC6259/LTC6260 5V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VSUPPLY = 5V, VCM = VOUT = VSUPPLY/2, CL = 10pF, VSHDN is unconnected. SYMBOL PARAMETER CONDITIONS CIN Input Capacitance CMRR Common Mode Rejection Ratio Differential Common Mode VCM = 0.3V to 3.5V VCM = –0.1V to 5.1V IVR PSRR Input Voltage Range Power Supply Rejection Ratio AV Supply Voltage Range Large Signal Gain Output Swing Low (Input Overdrive 30mV). Measured from V– Supply Current per Amplifier 5.1 5.25 40 10 80 l 145 l 25 l ISOURCE = 1mA 35 l 100 l l l 4 1 16 11 20 l ISHDN Shutdown Pin Current VIL VIH tON tOFF GBW SHDN Input Low Voltage SHDN Input High Voltage Turn-On Time Turn-Off Time Gain-Bandwidth Product VSHDN = 0.6V VSHDN = 1.5V Disable Enable SHDN Toggle from 0V to 5V SHDN Toggle from 5V to 0V f = 10kHz l l l tS Settling Time, 0.5V to 4.5V, Unity Gain SR Slew Rate FPBW THD+N Full Power Bandwidth (Note 8) Total Harmonic Distortion and Noise ILEAK Output Leakage Current in Shutdown %MP EMIRR Large Signal Overshoot Electromagnetic Interference Rejection Ratio 0.1% 0.01% AV = –1, VOUT = 0.5V to 4.5V, CLOAD = 10pF, RF = RG = 10kΩ 4VP-P f = 500Hz, AV = 2, RL = 4kΩ, VOUTP-P = 1V VIN = 2.25V to 2.75V VSHDN = 0V, VOUT = 0V VSHDN = 0V, VOUT = 5V VIN = 0.5V to 4.5V, AV = 1, CL = 100nF Input Power –10dB to Input Pins at 1GHz 60 0 l l l l l 1.5 1.0 0.4 0.2 0.1 40 50 105 120 180 250 40 65 55 100 140 350 10 4 Supply Current in Shutdown MAX 90 12 No Load ISOURCE = 100µA IS l TYP 0.65 1.2 95 95 l Output Swing High (Input Overdrive 30mV). Measured from V+ Output Short-Circuit Current l 66 64 –0.1 78 68 1.8 14 2.8 3.5 0.5 No Load ISINK = 1mA ISC l l VOUT = 0.5V to 4.5V, RLOAD = 100k ISINK = 100µA VOH l l l VCM = 0.4V, VS = 1.8V to 5.25V VOUT = 0.5V to 4.5V, RLOAD = 10k VOL MIN 152 7 1.3 14 18 0.24 20 0.025 72 100 100 2.7 45 23 25 5 7 200 15 0.6 UNITS pF pF dB dB V dB dB V V/mV V/mV V/mV V/mV mV mV mV mV mV mV mV mV mV mV mV mV mA mA µA µA µA µA nA nA V V µs µs MHz MHz µs µs V/µs V/µs kHz % dB nA nA % dB 6258960fa 4 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 1.8V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VSUPPLY = 1.8V, VCM = VOUT = 0.4V, CL = 10pF, VSHDN is unconnected. SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS VCM = V– + 0.3V VCM = V+ – 0.3V ∆VOS/∆T IB IOS en Input Offset Voltage Drift Input Bias Current (Note 7) Input Offset Current –400 100 400 1000 µV µV l –1000 1.5 µV/°C 2 75 nA 5 75 nA VCM = V– + 0.3V l –75 2 75 nA VCM = V+ – 0.3V l –75 2 75 RIN Input Resistance Differential Common Mode CIN Input Capacitance Differential Common Mode CMRR Common Mode Rejection Ratio VCM = 0.2V to 1.6V 38 nA nV/√Hz 2 µVP-P 500 500 fA/√Hz fA/√Hz 1 10 MΩ MΩ 0.65 1.2 pF pF 90 dB dB l 70 61 l –0.1 90 l 78 68 dB dB 15 1.6 50 l V/mV V/mV 4 0.4 10 l V/mV V/mV VCM = 0.4V, VS = 1.8V to 5.25V VOUT = 0.5V to 1.3V, RLOAD = 100k VOUT = 0.5V to 1.3V, RLOAD = 10k Output Swing Low (Input Overdrive 30mV), Measured from V– µV µV –75 f = 1kHz, VCM = 0V to 0.8V f = 1kHz, VCM = 1V to 1.8V VOL 400 1000 –75 f = 0.1Hz to 10Hz Large Signal Gain 100 l Input Current Noise Density AV –400 l –1000 l Input Noise Voltage Input Voltage Range UNITS VCM = V+ – 0.3V VCM in Power Supply Rejection Ratio MAX = V– + 0.3V f = 1kHz, VCM = 0.4V IVR TYP VCM = V– + 0.3V, V+ – 0.3V Input Voltage Noise Density PSRR MIN No Load 1.9 15 30 50 mV mV 80 110 130 mV mV 150 200 230 mV mV l ISINK = 100µA l ISINK = 1mA l V 6258960fa For more information www.linear.com/LTC6258 5 LTC6258/LTC6259/LTC6260 1.8V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VSUPPLY = 1.8V, VCM = VOUT = 0.4V, CL = 10pF, VSHDN is unconnected. SYMBOL PARAMETER VOH Output Swing High (Input Overdrive 30mV), Measured from V+ CONDITIONS MIN No Load TYP MAX 25 40 50 mV mV 35 60 100 mV mV 95 140 300 mV mV l ISOURCE = 100µA l ISOURCE = 1mA l ISC IS Output Short-Circuit Current UNITS 4 1 10 l 17 10 20 l 21 23 µA µA 1.0 1.5 2 µA µA 50 0 80 10 nA nA 0.5 V Supply Current per Amplifier Supply Current in Shutdown l ISHDN Shutdown Pin Current VSHDN = 0.5V VSHDN = 1.5V l l VIL SHDN Input Low Voltage Disable l VIH SHDN Input High Voltage Enable l 1.5 mA mA V tON Turn-On Time SHDN Toggle From 0V to 1.8V 47 µs tOFF Turn-Off Time SHDN Toggle From 1.8V to 0V 17 µs GBW Gain-Bandwidth Product f = 10kHz 1.3 MHz MHz 7 12 µs µs l TS Settling Time, 0.3V to 1.5V, Unity Gain 0.1% 0.01% SR Slew Rate AV = –1, VOUT = 0.3V to 1.5V, CLOAD = 10pF RF = RG = 10kΩ FPBW Full Power Bandwidth (Note 8) 1.2VP-P THD+N Total Harmonic Distortion and Noise f = 500Hz, AV = 2, RL = 4kΩ, VOUTP-P = 1V VIN = 0.65V to 0.15V 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 as well as ESD protection diodes to each power supply. If the differential input voltage exceeds 1.4V or the input extends more than 500mV beyond the power supply, the input current should be limited to less than 10mA. Note 3: A heat sink may be required to keep the junction temperature below the absolute maximum rating when the output is shorted indefinitely. Note 4: LTC6258I/LTC6259I/LTC6260I and LTC6258H/LTC6259H/ LTC6260H are guaranteed functional over the temperature range of –40°C to 125°C. l 1.0 0.4 0.16 0.1 0.22 V/µs V/µs 58 kHz 0.04 68 % dB Note 5: The LTC6258I/LTC6259I/LTC6260I are guaranteed to meet specified performance from –40°C to 85°C. The LTC6258H/LTC6259H/ LTC6260H are guaranteed to meet specified performance from –40°C to 125°C. Note 6: Thermal resistance varies with the amount of PC board metal connected to the package. The specified values are for short traces connected to the leads. Note 7: The input bias current is the average of the currents into the positive and negative input pins. Note 8: Full power bandwidth is calculated from the slew rate FPBW = SR/π • VP-P. 6258960fa 6 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 TYPICAL PERFORMANCE CHARACTERISTICS Input VOS Histogram 100 VS = ±2.5V VCM = 0V 300 70 200 60 100 50 40 30 VOS (µV) 80 70 60 50 40 –200 20 20 –300 10 10 –400 250 0 –350 –250 –150 –50 50 VOS (µV) 350 6258 G01 9 200 VS = ±2.5V VCM=0V HGRADE IND 10 250 –500 –40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) 350 6258 G02 6258 G03 VOS vs Common Mode Voltage 160 8 VOS (µV) 7 6 5 500 VCM = 0.4V 120 300 80 200 40 100 0 –40 4 0 –100 –80 –200 2 –120 –300 1 –160 –400 0 –200 1.8 3 –5 –4 –3 –2 –1 0 1 2 3 DISTRIBUTION (µV/°C) 4 5 2.4 3.0 3.6 4.2 SUPPLY VOLTAGE (V) 4.8 6258 G04 Input Bias Current vs Common Mode Voltage VOS vs IOUT 20 VS = ±2.5V VCM = 0V –40°C 25°C 125°C 0.6 VS = 5V 16 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1 2 3 4 5 6258 G07 0.5 1.5 20 +IN –IN VS = 1.8V 16 12 8 4 0 –4 –8 –12 –20 2.5 3.5 VCM (V) 4.5 5.5 6258 G06 Input Bias Current vs Common Mode Voltage –16 –5 –4 –3 –2 –1 0 1 IOUT (mA) –500 –0.5 INPUT BIAS CURRENT (nA) 0.8 5.4 6258 G05 INPUT BIAS CURRENT (nA) 1.0 VS = 5V 400 VOS (µV) 11 150 VOS vs Supply Voltage (25°C) Input Offset Drift Distribution VOS (mV) 0 –100 30 150 VS = ±2.5V VCM = 0V 400 80 0 –350 –250 –150 –50 50 VOS (µV) NUMBER OF UNITS VOS vs Temperature 500 VS = ±2.5V VCM = 2.2V 90 NUMBER OF PARTS NUMBER OF PARTS 90 Input VOS Histogram 100 +IN –IN 12 8 4 0 –4 –8 –12 –16 0 0.5 1 1.5 2 2.5 3 VCM (V) 3.5 4 4.5 5 6258 G08 –20 0 0.3 0.6 0.9 1.2 VCM (V) 1.5 1.8 6258 G09 6258960fa For more information www.linear.com/LTC6258 7 LTC6258/LTC6259/LTC6260 TYPICAL PERFORMANCE CHARACTERISTICS Input Bias Current vs Supply Voltage 10 20 +IB (nA) –IB (nA) 15 INPUT BIAS CURRENT (nA) INPUT BIAS CURRENT (nA) 6 4 2 0 –2 –4 –6 –8 2.3 2.8 3.3 3.8 4.3 SUPPLY VOLTAGE (V) 4.8 5 0 –5 +IB, VCM = 2V –IB, VCM = 2V +IB, VCM = –2V –IB, VCM = –2V –10 SUPPLY CURRENT (µA) 10 5 10 40 70 TEMPERATURE (°C) 100 130 SATURATION VOLTAGE FROM TOP RAIL (mV) VCM = 0.4V 15 –20 –100 –150 –40°C/5V 25°C/5V 85°C/5V 125°C/5V –40°C/1.8V 25°C/1.8V 85°C/1.8V 125°C/1.8V –200 –250 –300 –350 0 10 125°C 25°C –40°C 2.8 3.3 3.8 4.3 SUPPLY VOLTAGE (V) 4.8 5.3 6258 G16 0 0.5 1 1.5 2 2.5 3 3.5 SUPPLY VOLTAGE (V) 4 0.5 1 1.5 LOAD CURRENT (mA) 2 350 250 200 150 100 50 0 0 0.5 1 1.5 LOAD CURRENT (mA) 2 6258 G15 0.1Hz to 10Hz Output Voltage Noise 5 VS = ±2.5V VCM = 0.4V AV = 1 4 25 3 20 15 10 0 1.8 125°C 25°C –40°C 2.3 2.8 3.3 3.8 4.3 SUPPLY VOLTAGE (V) 5 –40°C/5V 25°C/5V 85°C/5V 125°C/5V –40°C/1.8V 25°C/1.8V 85°C/1.8V 125°C/1.8V 300 VCM = 0.4V 5 4.5 6258 G12 NOISE VOLTAGE (µV) MAXIMUM SINKING CURRENT (mA) MAXIMUM SOURCING CURRENT (mA) 30 15 2.3 0 Output Short-Circuit Current vs Supply Voltage (Sinking) 20 25°C –40°C 125°C 6258 G14 VCM = 0.4V 0 1.8 6 Output Saturation Voltage vs Load Current –50 Output Short-Circuit Current vs Supply Voltage (Sourcing) 5 8 2 0 6258 G13 25 10 Output Saturation Voltage vs Load Current 20 0 –50 12 6262 G11 Supply Current vs Temperature Per Channel VS = 5V VS = 1.8V 14 4 –20 –40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) 5.3 VS = 5V VCM = 0.4V 16 6258 G10 25 18 10 –15 –10 1.8 20 VS = ±2.5V SUPPLY CURRENT (uA) VCM = 0.4V SATURATION VOLTAGE FROM BOTTOM RAIL (mV) 8 Supply Current vs Supply Voltage per Channel Input Bias Current vs Temperature 4.8 5.3 6259 G17 2 1 0 –1 –2 –3 –4 –5 0 1 2 3 4 5 6 TIME (s) 7 8 9 10 6258 G18 6258960fa 8 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 TYPICAL PERFORMANCE CHARACTERISTICS Noise Voltage Density vs Frequency Input Referred Current Noise vs Frequency 400 350 300 250 200 150 100 50 1 10 100 1k 10k FREQUENCY (Hz) 100k 1M 1 1 1kHz 500Hz 0.01 0.1 GAIN (dB) 72 20 63 10 54 0 45 –10 36 –20 27 1 –50 10k 10 60 50 40 5 4 40 30 20 20 10 10 6258 G25 5 Capacitive Load Handling Overshoot vs Capacitive Load 50 30 10M 2.6 3.4 4.2 SUPPLY VOLTAGE (V) 6258 G24 OVERSHOOT (%) 70 60 PSRR (dB) CMRR (dB) 0 1.8 VS = 5V VCM = 0.4V 90 70 100k 1M FREQUENCY (Hz) 0.1 0 10M 100k 1M FREQUENCY (Hz) 100 80 10k RISING FALLING Power Supply Rejection Ratio vs Frequency VCM = ±2.5V VCM = 0V 1k 0.2 6258 G23 80 0 0.3 9 6258 G23 Common Mode Rejection Ratio vs Frequency 90 18 GAIN PHASE –40 VS = 5V VSTEP = VS – 1V 0.4 AV = –1 RG=RF = 10kΩ 81 30 –30 1kHz 500Hz 100 VS = ±2.5V VCM = 0V 40 6259 G21 0.5 90 PHASE THD+N (%) 50 1 Slew Rate vs Supply Voltage Gain and Phase vs Frequency 0.1 VOUTP-P (V) 0.1 VOUTP–P (V) 6258 G20 VS = ±2.5V VCM = 0V AV = 2 RG = RF = 10kΩ 0.1 0.01 0.01 1 FREQUENCY (MHz) Total Harmonic Distortion and Noise 0.01 0.01 0.1 0.1 6258 G19 1 VS = ±0.9V VCM = 0V AV = 2 RG = RF = 10kΩ VS = 2.5V VCM = 0V SLEW RATE (V/µs) 0 10 THD+N (%) VS = ±2.5V VCM = 0V 450 INPUT REFERRED CURRENT NOISE (pA/√Hz) INPUT REFERRED VOLTAGE NOISE (nV/√Hz) 500 Total Harmonic Distortion and Noise 0 100 VS = ±2.5V VCM = 0V AV = 1 VIN = ±2V 3 2 1 1k 10k 100k FREQUENCY (Hz) 1M 10M 6258 G26 0 0.01 0.1 1 10 CAPACITIVE LOAD (nF) 100 6258 G27 6258960fa For more information www.linear.com/LTC6258 9 LTC6258/LTC6259/LTC6260 TYPICAL PERFORMANCE CHARACTERISTICS Large-Signal Response 50 2.0 40 0 –0.5 10pF 100pF 1nF 10nF 100nF –1.0 –1.5 –2.0 –2.5 0 200 0.4 0 –10 CLOAD CLOAD CLOAD CLOAD CLOAD –20 –30 –40 400 600 TIME (µs) 0.6 10 800 –50 1000 0 200 = 10pF = 100pF = 1nF = 10nF = 100nF 400 600 TIME (µs) 10k –0.8 800 10 0 –10 CLOAD CLOAD CLOAD CLOAD CLOAD –20 –30 –40 –50 0 200 = 10pF = 100pF = 1nF = 10nF = 100nF 400 600 TIME (µs) 800 1000 10 1 AV = 10 AV = 1 0.1 0.01 0.1 1 FREQUENCY (kHz) 10 EMI REJECTION RATIO (dB) SUPPLY CURRENT (µA) 15 10 TA = 125°C TA = 25°C TA = –40°C 5 0 0 0.4 0.8 1.2 VSHDN (V) 1.6 2 6258 G33 Electromagnetic Interference Rejection Ratio VS = 2.5V VCM = 0V INPUT POWER = –10dBm 90 10 TA = 125°C TA = 25°C TA = –40°C 1.6 1000 VS = 5V VCM = 0.4V 6258 G32 100 0.8 1.2 VSHDN (V) 800 Supply Current vs SHDN Pin Voltage 100 15 0.4 400 600 TIME (µs) 20 20 0 200 6258 G30 1k VS = 1.8V VCM = 0.4V 5 0 25 Supply Current vs SHDN Pin Voltage 0 –1.0 VS = ±2.5V VCM = 0V 6258 G31 25 1000 SUPPLY CURRENT (µA) OUTPUT IMPEDANCE (Ω) VOLTAGE (mV) 20 CLOAD = 10pF CLOAD = 100pF CLOAD = 1nF CLOAD = 10nF CLOAD = 100nF –0.6 Output Impedance vs Frequency VS = ±0.9V AV = 1 RLOAD = 100kΩ 30 0.0 –0.2 6259 G30 Small-Signal Response 40 0.2 –0.4 6258 G28 50 VS = ±0.9V AV = 1 RLOAD = 100kΩ 0.8 20 VOLTAGE (mV) 0.5 VS = ±2.5V AV = 1 RLOAD = 100kΩ 30 VS = ±2.5V AV = 1 RLOAD = 100kΩ 1.0 Large-Signal Response 1.0 VOLTAGE (V) 1.5 VOLTAGE (V) Small-Signal Response 2.5 80 70 60 50 40 30 +IN –IN 20 10 2 0 10 6258 G34 100 1000 FREQUENCY (MHz) 10000 6258 G35 6258960fa 10 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 PIN FUNCTIONS –IN: Inverting Input of the Amplifier. Voltage range of this pin can go from V– – 0.1V to V+ + 0.1V. +IN: Noninverting Input of Amplifier. This pin has the same voltage range as –IN. V+: Positive Power Supply. Typically the voltage is from 1.8V to 5.25V. Split supplies are possible as long as the voltage between V+ and V– is between 1.8V and 5.25V. A bypass capacitor of 0.1µF as close to the part as possible should be used between power supply pins or between supply pins and ground. V–: Negative Power Supply. It is normally tied to ground. It can also be tied to a voltage other than ground as long as the voltage between V+ and V– is from 1.8V to 5.25V. If it is not connected to ground, bypass it with a capacitor of 0.1µF as close to the part as possible. SHDN: Active Low Shutdown. Shutdown threshold is 0.6V above negative rail. If left unconnected, the amplifier will be on. OUT: Amplifier Output. Rail-to rail amplifier output capable of delivering 4mA. 6258960fa For more information www.linear.com/LTC6258 11 LTC6258/LTC6259/LTC6260 SIMPLIFIED SCHEMATIC V+ R3 R6 + V+ I2 R5 Q15 V– ESDD1 R4 + ESDD2 C2 I1 Q12 Q11 ESDD5 Q13 +IN SHDN LOGIC D6 D8 D5 D7 Q5 Q4 –IN Q1 CC Q2 ESDD3 ESDD4 V– Q3 + VBIAS Q9 V– BUFFER AND OUTPUT BIAS Q10 V+ OUT I3 ESDD6 Q8 Q16 C1 Q17 Q18 Q19 Q7 Q14 Q6 R1 V– R2 6258960 F01 Figure 1. LTC6258/LTC6259/LTC6260 Simplified Schematic 6258960fa 12 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 OPERATION The LTC6258 family input signal range extends beyond the negative and positive power supplies. Figure 1 depicts a Simplified Schematic of the amplifier. The input stage is comprised of two differential amplifiers, a PNP stage Q1/ Q2 and NPN stage Q3/Q4 that are active over different ranges of common mode input voltage. The PNP stage is active between the negative power supply to approximately 1V below the positive supply. As the input voltage approaches the positive supply, transistor 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 remaining input common mode range. Also for the input stage, devices Q17, Q18 and Q19 act to cancel the bias current of the PNP input pair. When Q1/Q2 is active, the current in Q16 is controlled to be the same as the current Q1/Q2. Thus, the base current of Q16 is normally equal to the base current of the input devices of Q1/Q2. Similar circuitry (not shown) is used to cancel the base current of Q3/Q4. The buffer and output bias stage uses a special compensation technique to take full advantage of the process technology to drive high capacitive loads. The common emitter topology of Q14/Q15 enables the output to swing from rail to rail. 6258960fa For more information www.linear.com/LTC6258 13 LTC6258/LTC6259/LTC6260 APPLICATIONS INFORMATION Low Supply Voltage and Low Power Consumption Ground Sensing and Rail to Rail Output The LTC6258 family of operational amplifiers can operate with power supply voltages from 1.8V to 5.25V. Each amplifier draws 20µA. The low supply voltage capability and low supply current are ideal for portable applications. The LTC6258 family delivers over 4mA of output drive current. The output stage is a rail-to-rail topology that is capable of swinging to within 300mV of either rail. If output swing to the negative rail is required, an external pull down resistor to a negative supply can be added. For 5V/0V op amp supplies, a pull down resistor of 10k to –2V will allow a ‘true zero’ output swing. In this case, the output can swing all the way to the bottom rail while maintaining 45dB of open loop gain. Since the inputs can go 100mV beyond either rail, the op amp can easily perform ‘true ground’ sensing. High Capacitive Load Driving Capability and Wide Bandwidth The LTC6258 family is optimized for wide bandwidth low power applications. They have a high gain-bandwidth to power ratio and are unity gain stable. When the load capacitance increases, the increased capacitance at the output pushes the non-dominant pole to lower frequency in the open loop frequency response, worsening the phase and gain margin. The LTC6258 family are designed to directly drive up to 100nF of capacitive load in unity gain configuration (see Typical Performance Characteristics, Capacitive Load Handling). Low Input Referred Noise The LTC6258 family provides a low input referred noise of 38nV/√Hz at 1kHz. The average noise voltage density over a 100kHz bandwidth is less than 80nV/√Hz. The LTC6258 family is ideal for low noise and low power signal processing applications. Low Input Offset Voltage The LTC6258 family has a low offset voltage of 400μV, which is essential for precision applications. The offset voltage is trimmed with a proprietary trim algorithm to ensure low offset voltage over the entire common mode voltage range. Low Input Bias Current The LTC6258 family uses a bias current cancellation circuit to compensate for the base current of the input transistors. When the input common mode voltage is within 200mV of either rail, the bias cancellation circuit is no longer active. For common mode voltages ranging from 0.2V above the negative supply to 0.2V below the positive supply, the low input bias current allows the amplifiers to be used in applications with high resistance sources. The maximum output current is a function of total supply voltage. As the supply voltage to the amplifier increases, the maximum output current also increases. Attention must be paid to keep the junction temperature of the IC below 150°C when the output is in continuous short-circuit. The output of the amplifier has reverse-biased diodes connected to each supply. The output should not be forced more than 0.5V beyond either supply, otherwise current will flow through these diodes. EMI Rejection Electromagnetic interference (EMI) rejection is built into the LTC6258 op amp family. Rejection is measured by injecting 200mVP-P (–10dBm) RF signal into the pins and measuring the offset change (delta_VOS). The rejection ratio is calculated as 20log (100mV/delta_VOS). Input Protection and Output Overdrive To prevent breakdown of the input transistors, the input stages are protected against a large differential input voltage by two pairs of back-to-back diodes, D5 to D8. If the differential input voltage exceeds 1.4V, the current in these diodes must be limited to less than 10mA. These amplifiers are not intended for open loop applications such as comparators. When the output stage is overdriven, internal limiting circuitry is activated to improve overdrive recovery. In some applications, this circuitry may draw as much as 1mA supply current. 6258960fa 14 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 APPLICATIONS INFORMATION ESD Active Filter The LTC6258 family has reverse-biased ESD protection diodes on all inputs and output as shown in Figure 1. The bandpass filter Figure 3a is AC-coupled to an input. As a result, LTC6259 input does not place a burden on the previous stage to develop an absolute common mode voltage. A simple resistor divider with RA1 and RA2 provides biasing for the LTC6259 inputs. Pegging the op amp inputs to a fixed voltage helps to reduce distortion that might arise with moving common mode. This filter is centered at 10kHz. The exact resistance and capacitance values can be tweaked upwards or downwards, depending on whether lowest resistor noise or lowest total supply current is more important. Supply Voltage Ramping Fast ramping of the supply voltage can cause a current glitch in the internal ESD protection circuits. Depending on the supply inductance, this could result in a supply voltage transient that exceeds the maximum rating. A supply voltage ramp time of greater than 1ms is recommended. Feedback Components Care must be taken to ensure that the pole formed by the feedback resistors and the parasitic capacitance at the inverting input does not degrade stability. For example, in a gain of +2 configuration with gain and feedback resistors of 100k, a poorly designed circuit board layout with parasitic capacitance of 5pF (part +PC board) at the amplifier’s inverting input will cause the amplifier to oscillate due to a pole formed at 640kHz. An additional capacitor of 4.7pF across the feedback resistor as shown in Figure 2 will eliminate any ringing or oscillation. C1 4.7nF R2 21k IN R1 10k R8 10k C3 4.7nF C2 4.7nF R3 562Ω V+ CD2 0.1µF – + CD1 1µF Shutdown The single and dual versions have package options with SHDN pins that can shut down the amplifier to less than 7µA supply current. The SHDN pin voltage needs to be within 0.6V of V– for the amplifier to shut down. During shutdown, the output is in a high output impedance state. When left floating, the SHDN pin is internally pulled up to the positive supply and the amplifier remains enabled. U1 OUT LT6259 RA2 499k RA1 499k V+ 6258 F03a Figure 3a. 10kHz Bandpass Filter 5dB 5dB/DIV 4.7pF 100k –45dB 6258 F03b – 100k LTC6258 CPAR + VIN VOUT Figure 3b. Frequency Response of 10kHz Bandpass Filter of Figure 3a 6258960 F02 Figure 2. 6258960fa For more information www.linear.com/LTC6258 15 LTC6258/LTC6259/LTC6260 APPLICATIONS INFORMATION 4.7nF 21k V+ 154k MOD OUT GND + V LTC6992-1 10k V+ 976k 0.1µF 10k 4.7nF 0.1µF 4.7nF – + OUT LT6258 562Ω DIV SET 154k 1µF 182k 499k 499k V+ 6258 F04a Figure 4a. Low Power Squarewave - Sinewave Oscillator Low Power Sine Wave Generator 5.0 Figures 4b and 4c show the LTC6992-1 output and bandpass filter output. THD of the sine wave is –30.5 dBc. Note, even harmonics that appear in the distortion products of the filtered output already appear in the source square wave. 4.0 LTC6992–1 OUTPUT (V) A low power sine wave generator can be derived by driving a square wave into the bandpass filter. A complete schematic is shown in Figure 4a. The LTC6992-1 easily configures as a 50% duty cycle 10kHz square wave, and can drive the relatively benign loading seen in the bandpass filter. 3.0 2.0 1.0 0 50µs/Div 6258 F04b Figure 4b. Low Power Sine Generator Low Noise Reference 20 FILTERED OUTPUT SQUARE WAVE 0 AMPLITUDE (dB) The LT6656 is a 1µA precision series voltage reference. Yet with low power comes low drive current capability and higher noise. The LTC6259 can be used as a buffer that follows a filter to enhance the utilization of the LT6656 in low power applications. Figure 5a shows such a configuration. First a very low cutoff frequency follows the LT6656 output (RIN1 and CIN1, lower than 5Hz cutoff). Choice of filter resistor RIN1 is such that the bias current in the LTC6259, multiplied by the resistance value, is lower than the nominal offset voltage of the op amp. CIN1 can be larger or smaller, with more or less filtering accordingly. The voltage withstanding requirement of CIN1 is low, resulting in large capacitance in a small volume. –20 –40 –60 –80 –100 –120 0 10 20 30 40 50 60 70 80 90 100 FREQUENCY (kHz) 6258 F04c Figure 4c. FFT 6258960fa 16 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 APPLICATIONS INFORMATION 5V V+ LT6656 IN OUT – + RIN1 2.7k GND OUT LTC6258 22µF 22µF 22µF 6258960 F05a Figure 5a. Low Noise Reference Use LT6656 for a Low Current Starting Reference Voltage spectral noise densities are shown in Figure 5b. Larger noise from the reference below 10kHz noticeably drops down once a filter (RIN1 and CIN1) follow the reference. The op amp, configured in unity gain, with a large 44µF load, remains stable and contributes only a small amount of low frequency noise. Figure 5c shows the transient response of the combination of RIN1-CIN1 filter and op amp circuit, with and without the 44µF output capacitor. 5000 4000 3500 3000 2500 2000 1000 500 0 0.01 Figure 6a shows a voltage controlled LED drive circuit. When VIN is at 0V, the op amp supply current is nominally 20μA. The offset, for example, could be 450µV, appears across R1, inducing a 0.45mA current in the LED. Some applications want a guaranteed zero LED current at VIN = 0, and this is the purpose of R5. R5 forces 2.5μA current through R7, creating a negative 0.6mV sense offset. This offset guarantees a zero LED current. 0.1 1 10 FREQUENCY (kHz) 100 6258 F05b Figure 5b. Noise Density, Reference Buffer 3.0 2.8 2.6 INPUT NO 44µF OUTPUT CAP ADD 44µF OUTPUT CAP 2.4 VOLTS (V) Analog LED Control * 2.7k + 22µF FILTER 1500 Figure 5c shows the time domain response of the reference buffer. The total measured supply current consumption is 21µA. OP AMP, 44µF CLOAD OP AMP FILTERED REFERENCE REFERENCE OUTPUT INSTRUMENT ONLY 4500 NOISE DENSITY (nVrms/rt(Hz)) This circuit takes advantage of the ability of the LTC6259 to drive large capacitive loads. Use of a large output capacitor attached to the LT6659 enables significant bypassing of follow-on circuits that use the reference voltage. In total, the combination of LT6656 and LTC6259, in this configuration, develops a reference voltage, with low noise, at low power, and with appreciably large available bypass capacitance. 2.2 2.0 1.8 1.6 1.4 1.2 1.0 200ms/Div 6258 F05c Figure 5c. Reference Buffer Transient Response 6258960fa For more information www.linear.com/LTC6258 17 LTC6258/LTC6259/LTC6260 APPLICATIONS INFORMATION 5V D1 D R5 2M VIN – + R2 97.6k C1 100nF R3 2.2k LTC6258 R4 51Ω C2 10nF M1 2N7002 VG R7 237Ω R6 100k R1 1Ω 6258 F06a Figure 6a. Lower Power LED Driver with Voltage Command 100 MEASURED CALCULATED LED CURRENT (mA) 80 60 40 20 20 µA SUPPLY WHEN LED OFF 0 0 1 2 3 INPUT VOLTAGE (V) 4 5 6258 F06b Figure 6b. LED Current Indeed, the circuit works nicely. Once the input voltage is near 0, the LED current output is 0 and the total supply current is 20µA. Gain from the input voltage to LED current is 0.022A/V, as can be taken from the R2/R3 voltage divider and the sense resistor value. LED Current = VIN R3 • R1 R2+R3 Self-Oscillating LED Driver Taking the circuit of the above application a step further, the circuit of Figure 7a combines edge detection with use of the shutdown pin of the LTC6259. R2 and R3 bring in a divided down copy of the supply voltage as a reference into the positive terminal. The op amp forces this voltage on the sense resistor RSENSE in “LED ON” operation. In that sense this circuit is similar to the one above. However, whereas the previous circuit assumes an always-on operation mode, this new circuit hijacks the shutdown pin. C2 can AC couple fast action signals into the signal VC. Hence when the gate voltage VG increases when “LED ON” begins, VC will suddenly rise. VC connects to the shutdown pin; a rising edge on the shutdown pin enables the LTC6259, which is already active, to stay on. However, M3 is also on while M1 is on, and as a result will work with R9 to charge C2 slowly until VC falls below the shutdown threshold. At that moment, the active low shutdown kicks in, and the LTC6259 turns off. A negative falling VG voltage again feeds through C2, and a falling VC and hence a falling shutdown pin voltage keeps the circuit in an “LED OFF” state for some time. M3 turns off, and C2 discharges until VC is high enough to reactivate the LTC6259. It may seem a bit odd to develop such a circuit when a microprocessor or a LTC6992 can provide on-off capability in combination with a single MOSFET and resistor. The problem with those circuits, however, is the lack of control over the LED current. In the circuit of this application, a voltage is controlled across a sense resistor. There is no dependence on the LED voltage in how much current drives the LED. And generation of the on-off, or blinking, comes with the addition of only a handful of low cost components. 6258960fa 18 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 APPLICATIONS INFORMATION 5V CF 470nF R2 275k R3 15k – + C1 1nF LED U2 R4 51Ω R7 470k D VG LTC6258 RF VC 100Ω RGATE 10k M1 2N7002 M3 2N7002 VG R9 140k C2 1µF R8 1M VC R5 1M RSENSE 10Ω 6258 F07a The figure shows the sense resistor voltage (red) and the shutdown pin voltage (blue). The shutdown voltage is tied to VC; the gate drive couples through C2 as already described. 300.0 4.0 240.0 3.0 180.0 2.0 120.0 1.0 0 60.0 –1.0 0 –60.0 50ms/Div 6258 F07b SHUTDOWN PIN VOLTAGE (V) It is interesting to note that the LED current depends on the supply in this implementation in as much as the supply feeds through R2 and R3 to create a reference. The supply also figures into the time of the on and off cycle since the supply powers the edge detection and relaxation part of the circuitry. When the supply falls, the LED current drops and the cycle time increases. This change of behavior can help in battery powered LED blinking applications to predict end of life. SENSE RESISTOR VOLTAGE (mV) Figure 7a. LED Driver with Self-Oscillation –2.0 Figure 7b. LED Blinker Circuit Components RF and CF may apparently slow edges down greatly. Adding this much delay is not essential, but it can help to smooth out any hiccups that occur when the part goes through a startup sequence after the shutdown pin goes inactive. 47µs as a time constant is insignificant in the time scale of the blinking (10’s or 100’s of ms). The 47µs is much smaller than any time constant associated with C2 and its resistors. 6258960fa For more information www.linear.com/LTC6258 19 LTC6258/LTC6259/LTC6260 PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTCLTC6258#packaging for the most recent package drawings. S6 Package 6-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1636) 0.62 MAX 2.90 BSC (NOTE 4) 0.95 REF 1.22 REF 3.85 MAX 2.62 REF 1.4 MIN 2.80 BSC 1.50 – 1.75 (NOTE 4) PIN ONE ID RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.30 – 0.45 6 PLCS (NOTE 3) 0.95 BSC 0.80 – 0.90 0.20 BSC 0.01 – 0.10 1.00 MAX DATUM ‘A’ 0.30 – 0.50 REF 0.09 – 0.20 (NOTE 3) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 1.90 BSC S6 TSOT-23 0302 6258960fa 20 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTC6259#packaging for the most recent package drawings. TS8 Package 8-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1637 Rev A) 0.40 MAX 2.90 BSC (NOTE 4) 0.65 REF 1.22 REF 1.4 MIN 3.85 MAX 2.62 REF 2.80 BSC 1.50 – 1.75 (NOTE 4) PIN ONE ID RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.22 – 0.36 8 PLCS (NOTE 3) 0.65 BSC 0.80 – 0.90 0.20 BSC 0.01 – 0.10 1.00 MAX DATUM ‘A’ 0.30 – 0.50 REF 0.09 – 0.20 (NOTE 3) 1.95 BSC TS8 TSOT-23 0710 REV A NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 6258960fa For more information www.linear.com/LTC6258 21 LTC6258/LTC6259/LTC6260 PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTC6259#packaging for the most recent package drawings. MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660 Rev G) 0.889 ±0.127 (.035 ±.005) 5.10 (.201) MIN 3.20 – 3.45 (.126 – .136) 3.00 ±0.102 (.118 ±.004) (NOTE 3) 0.65 (.0256) BSC 0.42 ± 0.038 (.0165 ±.0015) TYP 8 7 6 5 0.52 (.0205) REF RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) 3.00 ±0.102 (.118 ±.004) (NOTE 4) 4.90 ±0.152 (.193 ±.006) DETAIL “A” 0° – 6° TYP GAUGE PLANE 0.53 ±0.152 (.021 ±.006) DETAIL “A” 1 2 3 4 1.10 (.043) MAX 0.86 (.034) REF 0.18 (.007) SEATING PLANE 0.22 – 0.38 (.009 – .015) TYP 0.65 (.0256) BSC 0.1016 ±0.0508 (.004 ±.002) MSOP (MS8) 0213 REV G NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 6258960fa 22 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTC6259#packaging for the most recent package drawings. MS Package 10-Lead Plastic MSOP (Reference LTC DWG # 05-08-1661 Rev F) 0.889 ±0.127 (.035 ±.005) 5.10 (.201) MIN 3.20 – 3.45 (.126 – .136) 3.00 ±0.102 (.118 ±.004) (NOTE 3) 0.50 0.305 ±0.038 (.0197) (.0120 ±.0015) BSC TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) 10 9 8 7 6 3.00 ±0.102 (.118 ±.004) (NOTE 4) 4.90 ±0.152 (.193 ±.006) DETAIL “A” 0.497 ±0.076 (.0196 ±.003) REF 0° – 6° TYP GAUGE PLANE 1 2 3 4 5 0.53 ±0.152 (.021 ±.006) DETAIL “A” 0.18 (.007) SEATING PLANE 0.86 (.034) REF 1.10 (.043) MAX 0.17 – 0.27 (.007 – .011) TYP 0.50 (.0197) BSC NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 0.1016 ±0.0508 (.004 ±.002) MSOP (MS) 0213 REV F 6258960fa For more information www.linear.com/LTC6258 23 LTC6258/LTC6259/LTC6260 PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTC6260#packaging for the most recent package drawings. MS Package 16-Lead Plastic MSOP (Reference LTC DWG # 05-08-1669 Rev A) 0.889 ±0.127 (.035 ±.005) 5.10 (.201) MIN 3.20 – 3.45 (.126 – .136) 4.039 ±0.102 (.159 ±.004) (NOTE 3) 0.50 (.0197) BSC 0.305 ±0.038 (.0120 ±.0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) DETAIL “A” 3.00 ±0.102 (.118 ±.004) (NOTE 4) 4.90 ±0.152 (.193 ±.006) 0° – 6° TYP 0.280 ±0.076 (.011 ±.003) REF 16151413121110 9 GAUGE PLANE 0.53 ±0.152 (.021 ±.006) DETAIL “A” 0.18 (.007) SEATING PLANE 1.10 (.043) MAX 0.17 – 0.27 (.007 – .011) TYP 1234567 8 0.50 (.0197) BSC NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 0.86 (.034) REF 0.1016 ±0.0508 (.004 ±.002) MSOP (MS16) 0213 REV A 6258960fa 24 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTC6258#packaging for the most recent package drawings. DC6 Package 6-Lead Plastic DFN (2mm × 2mm) (Reference LTC DWG # 05-08-1703 Rev C) 0.70 ±0.05 2.55 ±0.05 1.15 ±0.05 0.60 ±0.10 (2 SIDES) PACKAGE OUTLINE 0.25 ±0.05 0.50 BSC 1.37 ±0.10 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS R = 0.125 TYP 0.60 ±0.10 (2 SIDES) 0.40 ±0.10 4 6 2.00 ±0.10 (4 SIDES) PIN 1 BAR TOP MARK (SEE NOTE 6) PIN 1 NOTCH R = 0.20 OR 0.25 × 45° CHAMFER R = 0.05 TYP 0.200 REF 0.75 ±0.05 3 (DC6) DFN REV C 0915 1 0.25 ±0.05 0.50 BSC 1.37 ±0.10 (2 SIDES) 0.00 – 0.05 BOTTOM VIEW—EXPOSED PAD NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WCCD-2) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 6258960fa For more information www.linear.com/LTC6258 25 LTC6258/LTC6259/LTC6260 PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTC6259#packaging for the most recent package drawings. DC8 Package 8-Lead Plastic DFN (2mm × 2mm) (Reference LTC DWG # 05-08-1719 Rev A) 0.70 ±0.05 2.55 ±0.05 1.15 ±0.05 0.64 ±0.05 (2 SIDES) PACKAGE OUTLINE 0.25 ±0.05 0.45 BSC 1.37 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED R = 0.05 TYP 2.00 ±0.10 (4 SIDES) PIN 1 BAR TOP MARK (SEE NOTE 6) R = 0.115 TYP 5 8 0.40 ±0.10 0.64 ±0.10 (2 SIDES) PIN 1 NOTCH R = 0.20 OR 0.25 × 45° CHAMFER (DC8) DFN 0409 REVA 4 0.200 REF 1 0.23 ±0.05 0.45 BSC 0.75 ±0.05 1.37 ±0.10 (2 SIDES) 0.00 – 0.05 BOTTOM VIEW—EXPOSED PAD NOTE: 1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 6258960fa 26 For more information www.linear.com/LTC6258 LTC6258/LTC6259/LTC6260 REVISION HISTORY REV DATE DESCRIPTION A 04/17 Added SOT-23 package. PAGE NUMBER 1, 2, 3, 20 6258960fa 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. For more information www.linear.com/LTC6258 27 LTC6258/LTC6259/LTC6260 TYPICAL APPLICATION LED Driver with Self Oscillation LED Blinker Current R3 15k – + C1 1nF U2 R4 51Ω R7 470k D VG LTC6258 RF VC 100Ω RGATE 10k M1 2N7002 M3 2N7002 VG R9 140k RSENSE 10Ω C2 1µF R8 1M VC R5 1M 6258 TA03 300.0 4.0 240.0 3.0 180.0 2.0 120.0 1.0 0 60.0 –1.0 0 –60.0 50ms/Div 6258 TA04 SHUTDOWN PIN VOLTAGE (V) R2 275k LED SENSE RESISTOR VOLTAGE (mV) 5V CF 470nF –2.0 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC6255/LTC6256/ 6.5MHz, 65µA Power Efficient RR Op Amp LTC6257 6.5MHz, 65µA, RR IN/OUT, 1.8V to 5.25V LTC6261/LTC6262/ 30MHz, 240µA Power Efficient RR Op Amp LTC6263 30MHz, 240µA, RR IN/OUT, 1.8V to 5.25V LTC6246/LTC6247/ 180MHz, 1mA, Power Efficient Rail-to-Rail Op Amps LTC6248 180MHz GBW, 1mA, 500μV VOS, RR In/Out, 2.5V to 5.25V, 90V/µs Slew Rate LT1498/LT1499 10MHz, 6V/µs, Dual/Quad,Rail-to-Rail Input and Output, Precision C-Load Op Amps 10MHz GBW, 1.7mA, 475μV VOS, RR In/Out, 2.2V to ±15V, 10nF CLOAD LTC6081/LTC6082 Precision Dual/Quad CMOS Rail-to-Rail Input/Output Amplifiers 3.6MHz GBW, 330μA, 70μV VOS, RR In/Out, 2.7V to 5.5V, 100dB CMRR LTC2050/LTC2051/ Zero-Drift Operational Amplifiers in SOT-23 LTC2052 3MHz GBW, 800μA, 3μV VOS, V– to V+ – 1V In, RR Out, 2.7V to 6V, 130dB CMRR/PSRR LTC1050/LTC1051/ Precision Zero-Drift, Operational Amplifierwith Internal LTC1052 Capacitors 2.5MHz GBW, 1mA, 5μV VOS, V– to V+ – 2.3V In, RR Out, 4.75V to 16V, 120dB CMRR, 125dB PSRR LTC6084/LTC6085 Dual/Quad 1.5MHz, Rail-to-Rail, CMOS Amplifiers 1.5MHz GBW, 110μA, 750μV VOS, RR In/Out, 2.5V to 5.5V LT1783 1.25MHz, Over-The-Top® Micropower, Rail-to-Rail Input and Output Op Amp in SOT-23 1.25MHz GBW, 300μA, 800μV VOS, RR In/Out, 2.5V to 18V LT1637/LT1638/ LT1639 1.1MHz, 0.4V/μs Over-The-Top Micropower, Rail-to-Rail Input and Output Op Amps 1.1MHz GBW, 250μA, 350μV VOS, RR In/Out, 2.7V to 44V, 110dB CMRR LTC2054/LTC2055 Single/Dual Micropower Zero-Drift Operational Amplifiers 500kHz GBW, 150μA, 3μV VOS, V– to V+ – 0.5V In, RR Out, 2.7V to 6V LT6010/LT6011/ LT6012 135μA, 14nV/√Hz, Rail-to-Rail Output Precision Op Amp with Shutdown 330kHz GBW, 135μA, 35μV VOS, V– + 1.0V to V+ – 1.2V In, RR Out, 2.7V to 36V LT1782 Micropower, Over-The-Top, SOT-23, Rail-to-Rail Input and 200kHz GBW, 55μA, 800μV VOS, RR In/Out, 2.5V to 18V Output Op Amp LT1636 Over-The-Top, Micropower Rail-to-Rail, Input and Output Op Amp 200kHz GBW, 50μA, 225μV VOS, RR In/Out, 2.7V to 44V, –40°C to 125°C LT1490A/LT1491A Dual/Quad Over-The-Top, Micropower Rail-to-Rail Input and Output Op Amps 200kHz GBW, 50μA, 500μV VOS, RR In/Out, 2V to 44V LT2178/LT2179 17μA Max, Dual and Quad, Single Supply, Precision Op Amps 85kHz GBW, 17μA, 70μV VOS, RR In/Out, 5V to 44V LT6000/LT6001/ LT6002 Single, Dual and Quad, 1.8V, 13μA Precision Rail-to-Rail Op Amps 50kHz GBW, 16μA , 600μV VOS(MAX), RR In/Out, 1.8V to 18V 6258960fa 28 LT 0417 REV A • PRINTED IN USA www.linear.com/LTC6258 For more information www.linear.com/LTC6258 LINEAR TECHNOLOGY CORPORATION 2017