ltc6256 Linear Technology Corporation, ltc6256 Datasheet
ltc6256
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ltc6256 Summary of contents
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... For applications that require power-down, LTC6255 and LTC6256 in S6 and MS10 packages offer shutdown pins which reduces the current consumption to 7µA maximum. The LTC6255 family can be used as plug-in replacements for many commercially available op amps to reduce power or to improve input/output range and performance. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Over-The-Top is a trademark of Linear Technology Corporation ...
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... LTC6255/LTC6256/LTC6257 Absolute MAxiMuM rAtings (Note 1) + – Supply Voltage: V – V ...........................................5.5V Input Voltage . .................................. V 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 pin conFigurAtion TOP VIEW OUTA 1 –INA 2 – +INA – – – PACKAGE 8-LEAD (2mm 2mm) PLASTIC UTDFN T = 125° ...
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... LEAD FREE FINISH TAPE AND REEL LTC6255CS6#TRMPBF LTC6255CS6#TRPBF LTC6255IS6#TRMPBF LTC6255IS6#TRPBF LTC6255HS6#TRMPBF LTC6255HS6#TRPBF LTC6256CTS8#TRMPBF LTC6256CTS8#TRPBF LTC6256ITS8#TRMPBF LTC6256ITS8#TRPBF LTC6256HTS8#TRMPBF LTC6256HTS8#TRPBF LTFFW LTC6256CKC#TRMPBF LTC6256CKC#TRPBF LTC6256IKC#TRMPBF LTC6256IKC#TRPBF LTC6256CMS8#PBF LTC6256CMS8#TRPBF LTDXW LTC6256IMS8#PBF LTC6256IMS8#TRPBF LTC6256CMS#PBF LTC6256CMS#TRPBF LTC6256IMS#PBF LTC6256IMS#TRPBF LTC6257CMS#PBF LTC6257CMS#TRPBF LTC6257IMS#PBF LTC6257IMS#TRPBF LTC6257HMS#PBF LTC6257HMS#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. ...
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... LTC6255/LTC6256/LTC6257 5V electricAl chArActeristics temperature range, otherwise specifications are at T SYMBOL PARAMETER CMRR Common Mode Rejection Ratio IVR Input Voltage Range PSRR Power Supply Rejection Ratio A Large Signal Gain V V Output Swing Low (Input Overdrive 30mV). OL – Measured from V V Output Swing High (Input Overdrive 30mV Measured from V I Output Short-Circuit Current SC I Supply Current per Amplifier S Supply Current in Shutdown I Shutdown Pin Current SHDN V SHDN Input Low Voltage IL V SHDN Input High Voltage IH t Turn-On Time ON t Turn-Off Time OFF BW –3dB Closed Loop Bandwidth ...
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... Input Bias Current (Note Input Offset Current OS e Input Voltage Noise Density n Input Noise Voltage i Input Current Noise Density n R Input Resistance IN C Input Capacitance IN CMRR Common Mode Rejection Ratio IVR Input Voltage Range PSRR Power Supply Rejection Ratio A Large Signal Gain V V Output Swing Low (Input Overdrive 30mV), OL – Measured from V LTC6255/LTC6256/LTC6257 The denotes the specifications which apply over the full l = 25° 1.8V SUPPLY CM CONDITIONS – 0. – 0.3V CM – 0.3V, V – 0.3V CM – 0.3V ...
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... IN Note 5: The LTC6255C/LTC6256C/LTC6257C are guaranteed to meet the specified performance from 0°C to 70°C. The LTC6255C/LTC6256C/ LTC6257C are designed, characterized and expected to meet specified performance from –40°C to 85°C but are not tested or QA sampled at these temperatures. The LTC6255I/LTC6256I/LTC6257I are guaranteed to meet specified performance from –40°C to 85°C. The LTC6255H/ LTC6256H/LTC6257H 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. ...
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... –55°C, 25°C 0 125°C –5 –10 –15 –20 –25 –5 –4 –3 –2 – (mA) OUT 625567 G07 LTC6255/LTC6256/LTC6257 Input V Histogram OS 140 V = ±2. 2.2V CM 120 100 –1000 –600 –200 200 600 V (µ Supply Voltage (25°C) ...
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... LTC6255/LTC6256/LTC6257 typicAl perForMAnce chArActeristics Input Bias Current vs Supply Voltage 0. –5 +IN –10 –15 –IN –20 –25 1.8 2.8 3.8 4.8 SUPPLY VOLTAGE (V) 625567 G10 Supply Current vs Temperature 100 1.8V –40 – 110 TEMPERATURE (°C) 625567 G13 Output Short-Circuit Current vs Supply Voltage (Sourcing) ...
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... G19 Total Harmonic Distortion and Noise ±0. 10k G F 0.1 1kHz 0.01 500Hz 0.001 0.01 0 (V) OUTP-P 625567 G22 LTC6255/LTC6256/LTC6257 Wide Band Noise Voltage Density vs Frequency ±2. FREQUENCY (Hz) 625567 G20 Total Harmonic Distortion and Noise ±2. ...
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... LTC6255/LTC6256/LTC6257 typicAl perForMAnce chArActeristics Slew Rate vs Supply Voltage 2.5 2.0 RISING 1.5 FALLING 1.0 – 0 – 1V STEP 10k 1.5 2.5 3.5 4 SUPPLY VOLTAGE (V) S 625567 G25 Capacitive Load Handling Overshoot vs Capacitive Load ±2. ± 0.01 0 (nF) LOAD ...
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... TIME (µs) 625567 G31 Output Impedance vs Frequency 1000 V = ±2. 100 0.1 0.01 0.01 0 100 1k FREQUENCY (Hz) 625567 G12 LTC6255/LTC6256/LTC6257 Large-Signal Response 2.5 2.0 1 ±2. 1 100nF LOAD 0.5 0 –0.5 –1.0 –1.5 –2.0 –2.5 100 TIME (µs) Supply Current vs SHDN Pin Voltage ...
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... ESDD4 ESDD3 – Q16 Q17 Q18 – V Figure 1. LTC6255/LTC6256/LTC6257 Simplified Schematic – Negative Power Supply normally tied to ground. It can also be tied to a voltage other than ground as long as the voltage between 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. The voltage range extends to within millivolts of each supply rail ...
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... Capacitive Load Handling). Higher gain configurations tend to have better capacitive drive capability than lower gain configurations due to lower closed loop bandwidth and hence higher phase margin. LTC6255/LTC6256/LTC6257 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. ...
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... LTC6255/LTC6256/LTC6257 ApplicAtions inForMAtion 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. Ground Sensing and Rail to Rail Output The LTC6255 family has excellent output drive capability, delivering over 10mA of output drive current. The output stage is a rail-to-rail topology that is capable of swinging to within 30mV 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 2.1k 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 80dB of open loop gain ...
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... V IN 1/2 LTC6256 – –0.9V 90.9k 10k 10k Figure 3. Gain of 100 Amplifier (3dB Bandwidth of 200kHz on 130µA Supply Current) LTC6255 Very Low Power 2nd Order Lowpass Filter The LTC6256 circuit shown in Figure 2nd order, 100kHz, Butterworth lowpass filter. The filter’s differential output maximizes the dynamic range in very low voltage operation. A general 2nd order lowpass circuit is shown in A, 1.8V, 140µA, 100kHz, Lowpass Filter (Single-Ended Input and Differential Output) 1.8V 2.49k 100pF 8 2.49k 10k 2 – ...
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... LTC6255/LTC6256/LTC6257 typicAl ApplicAtions – LTC6255 10µ 100k 100k + V Figure 5 RC Component Equations − − Q Gain + 1 π π Gain R 1 Gain ...
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... R INSTALLED UP 10% TO 90% RISE TIME: 10mA TO 1A, 2µs 0mA TO 1A, ADD 2.7µs DELAY Figure 6: LTC6255 Applied as a LED Current Driver with 2µs Rise Time LTC6255/LTC6256/LTC6257 this is the purpose of R through R5 creating a negative 1.2mV output offset at R3. This guarantees a zero LED current, but note that the op amp supply current rises from 65µ still respectable 650µA in this case due to internal protection circuitry for the output stage. For reduced current, the LTC6255 can ...
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... LTC6255/LTC6256/LTC6257 pAckAge Description 1.37 ±0.05 2.55 ±0.05 0.64 ±0.05 1.15 ±0.05 0.45 BSC 1.35 REF RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED KC Package 8-Lead Plastic UTDFN (2mm × 2mm) (Reference LTC DWG # 05-08-1749 Rev Ø) 2.00 ±0.10 0.70 ±0.05 PIN 1 BAR PACKAGE TOP MARK OUTLINE (SEE NOTE 6) 0.25 ± ...
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... REF 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 LTC6255/LTC6256/LTC6257 S6 Package 6-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1636) 1.22 REF 1.50 – 1.75 2.80 BSC 1.4 MIN (NOTE 4) 0.95 BSC 0.80 – ...
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... LTC6255/LTC6256/LTC6257 pAckAge Description 0.52 MAX 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF 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 ...
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... 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 LTC6255/LTC6256/LTC6257 MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660 Rev F) DETAIL “ ...
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... LTC6255/LTC6256/LTC6257 pAckAge Description 5.23 (.206) MIN 0.305 ± 0.038 (.0120 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) 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" ...
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... 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 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC6255/LTC6256/LTC6257 MS Package 16-Lead Plastic MSOP (Reference LTC DWG # 05-08-1669 Rev Ø) 0.889 0.127 (.035 .005) 3.20 – ...
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... LTC6255/LTC6256/LTC6257 typicAl ApplicAtion 2µs Rise Time Analog 1A Pulsed LED Current Driver. LTC6255 Applied as a LED Current Driver with 2µs Rise Time • 200mA/V LED SHDN 9.76k LTC6255 200 – 220pF 100k 1M GUARANTEES LED OFF WHEN OP AMP SHDN. OTHERWISE OPTIONAL FORCES LED COMPLETELY OFF WHEN OTHERWISE OPTIONAL. ...