LTC6253-7 2GHz, 3.5mA Gain of 7 Stable Rail-to-Rail I/O Dual Op Amp FEATURES n n n n n n n n n n n n n n n DESCRIPTION Gain Bandwidth Product: 2GHz –3dB Frequency (AV = 7): 160MHz Low Quiescent Current: 3.5mA Max High Slew Rate: 500V/µs Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Low Broadband Voltage Noise: 2.75nV/√Hz Fast Output Recovery Supply Voltage Range: 2.5V to 5.25V Input Offset Voltage: 350µV Max Large Output Current: 90mA CMRR: 105dB Open Loop Gain: 60V/mV Operating Temperature Range: –40°C to 125°C MS10 Package with Independent Shutdown Pins The LTC®6253-7 is a dual high speed, low power, rail-torail input/output operational amplifier. On only 3.5mA of supply current, it features a 2GHz gain-bandwidth product, 500V/µs slew rate and a low 2.75nV/√Hz of input-referred noise. The combination of high bandwidth, high slew rate, low power consumption and low broadband noise makes the LTC6253-7 ideal for lower supply voltage, high speed signal conditioning systems. The device is stable for closed loop noise gains of 7 or higher. The LTC6253-7 maintains high efficiency performance from supply voltage levels of 2.5V to 5.25V and is fully specified at supplies of 2.7V and 5.0V. For applications that require power-down, the LTC6253-7 offers a shutdown pin which disables the amplifier and reduces current consumption to 42µA. APPLICATIONS n n n n n The LTC6253-7 can be used as a plug-in replacement for many commercially available op amps to reduce power or to improve input/output range and performance. Low Voltage, High Frequency Signal Processing Driving A/D Converters Rail-to-Rail Buffer Amplifiers Active Filters Battery Powered Equipment 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 LTC6253–7 Driving LTC2314–14 1024 Point FFT ADC Driver with Gain 5V 2.2µF 4.4V VIN = 0V TO 580mV + – V– REF OVDD VDD ½ LTC6253-7 V+ 100Ω OUT 1.21k –0.7V 2.2µF CS AIN LTC2314-14 8-PIN TSOT 47pF CS SCK SCK SDO SDO AMPLITUDE (dBFS) 2.2µF 3.3V GND 625234 TA01 200Ω 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 fS = 2Msps F1 = 20.5kHz F1 AMPLITUDE = –0.916dBFS SFDR = 89dB SNR = 72dB 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (kHz) 62537 TA01b 62537f For more information www.linear.com/LTC6253-7 1 LTC6253-7 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW 1 2 3 4 SHDNA 5 OUT A –IN A +IN A V– – + + – Total Supply Voltage (V+ to V –).................................5.5V Input Current (+IN, –IN, SHDN) (Note 2)............... ±10mA Output Current (Note 3)...................................... ±100mA Operating Temperature Range (Note 4).. –40°C to 125°C Specified Temperature Range (Note 5)... –40°C to 125°C Storage Temperature Range................... –65°C to 150°C Junction Temperature............................................ 150°C Lead Temperature (Soldering, 10 sec).................... 300°C 10 9 8 7 6 V+ OUT B –IN B +IN B SHDNB MS PACKAGE 10-LEAD PLASTIC MSOP TJMAX = 150°C, qJA = 160°C/W (NOTE 9) ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LTC6253IMS-7#PBF LTC6253IMS-7#TRPBF LTGWS 10-Lead Plastic MSOP –40°C to 85°C LTC6253HMS-7#PBF LTC6253HMS-7#TRPBF LTGWS 10-Lead Plastic MSOP –40°C to 125°C *Temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. 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/. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix. ELECTRICAL CHARACTERISTICS (VS = 5V) The l denotes the specifications which apply across the specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 5V, 0V; VSHDN = 2V; VCM = VOUT = 2.5V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = Half Supply MIN TYP MAX UNITS 50 l –350 –1000 350 1000 µV µV –2.2 –3.3 0.1 l 2.2 –3.3 mV mV –350 –550 50 l 350 550 µV µV –2.75 –4 0.1 l 2.75 4 mV mV VCM = V+ – 0.5V, NPN Mode DVOS Input Offset Voltage Match (Channel-to-Channel) (Note 7) VCM = Half Supply VCM = V+ – 0.5V, NPN Mode VOS TC Input Offset Voltage Drift IB Input Bias Current (Note 6) VCM = Half Supply Input Offset Current –0.75 –1.15 –0.1 0.75 1.15 µA µA 0.8 0.4 1.4 l 3.0 5.0 µA µA –0.5 –0.6 –0.03 l 0.5 0.6 µA µA –0.5 –0.6 –0.03 l 0.5 0.6 µA µA VCM = Half Supply VCM = V+ – 0.5V, NPN Mode en in µV/°C l VCM = V+ – 0.5V, NPN Mode IOS –3.5 l Input Noise Voltage Density f = 1MHz 2.75 nV/√Hz Input 1/f Noise Voltage f = 0.1Hz to 10Hz 2 µVP-P Input Noise Current Density f = 1MHz 4 pA/√Hz 62537f 2 For more information www.linear.com/LTC6253-7 LTC6253-7 ELECTRICAL CHARACTERISTICS (VS = 5V) The l denotes the specifications which apply across the specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 5V, 0V; VSHDN = 2V; VCM = VOUT = 2.5V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN CIN Input Capacitance Differential Mode Common Mode 2.5 0.8 pF pF RIN Input Resistance Differential Mode Common Mode 7.2 3 kΩ MΩ AVOL Large Signal Voltage Gain RL = 1k to Half Supply (Note 9) VCMR Input Common Mode Range PSRR Power Supply Rejection Ratio 60 V/mV V/mV 5 2.4 13 l V/mV V/mV 85 82 105 l dB dB VOL Output Swing Low (VOUT l 0 l 66.5 62 l 2.5 VS = 2.5V to 5.25V, VCM = 1V Supply Voltage Range (Note 5) – V–) No Load VS 70 ISINK = 5mA 40 65 mV mV 60 90 120 mV mV 150 200 320 mV mV 65 100 120 mV mV 115 170 210 mV mV 270 330 450 mV mV –90 –40 –32 mA mA l Output Swing High (V+ – VOUT) No Load l ISOURCE = 5mA l ISOURCE = 25mA l ISC Output Short-Circuit Current Sourcing l Sinking l IS Supply Current per Amplifier 60 40 VCM = Half Supply 100 3.5 4.8 mA mA 4.25 4.85 5.9 mA mA 42 55 75 µA µA l ISD Disable Supply Current VSHDN = 0.8V l ISHDNL ISHDNH SHDN Pin Current Low VSHDN = 0.8V SHDN Pin Current High mA mA 3.3 l VCM = V+ – 0.5V V 25 l ISINK = 25mA V dB dB 5.25 l VOH UNITS 35 16 VCM = 0V to 3.5V Common Mode Rejection Ratio MAX l RL = 100Ω to Half Supply (Note 9) CMRR TYP –3 –4 –1.6 l 0 0 µA µA –300 –600 35 l 300 600 nA nA 0.8 V VSHDN = 2V VL SHDN Pin Input Voltage Low l l VH SHDN Pin Input Voltage High IOSD Output Leakage Current in Shutdown VSHDN = 0.8V, Output Shorted to Either Supply 2 100 nA V tON Turn-On Time VSHDN = 0.8V to 2V 3.5 µs tOFF Turn-Off Time VSHDN = 2V to 0.8V 2 µs 62537f For more information www.linear.com/LTC6253-7 3 LTC6253-7 ELECTRICAL CHARACTERISTICS (VS = 5V) The l denotes the specifications which apply across the specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 5V, 0V; VSHDN = 2V; VCM = VOUT = 2.5V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS BW –3dB Closed Loop Bandwidth AV = 7, RL = 1k to Half Supply GBW Gain-Bandwidth Product f = 10MHz, RL = 1k to Half Supply MIN l tS , 0.1% Settling Time to 0.1% AV = 7, 2V Output Step RL = 1k, VCC = 4.5V, VEE = 0.5V SR Slew Rate AV = –6, 4V Output Step (Note 10) l 0.9 0.67 300 250 TYP MAX UNITS 160 MHz 2 GHz GHz 32 ns 500 V/µs V/µs FPBW Full Power Bandwidth VOUT = 4VP-P (Note 12) 13 MHz HD2/HD3 Harmonic Distortion RL = 1k to Half Supply, AV = +7, RF = 499Ω fC = 100kHz, VO = 2VP-P fC = 1MHz, VO = 2VP-P fC = 5MHz, VO = 2VP-P 99/94 73/71 60/56 dBc dBc dBc RL = 1kΩ to Half Supply, AV = +7, RF = 3kΩ fC = 100kHz, VO = 2VP-P fC = 1MHz, VO = 2VP-P fC = 5MHz, VO = 2VP-P 105/109 82/87 66/67 dBc dBc dBc Crosstalk AV = 7, RL = 1k to Half Supply, VOUT = 2VP-P, f = 2.5MHz –79 dB (VS = 2.7V) The l denotes the specifications which apply across the specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 2.7V, 0V; VSHDN = 2V; VCM = VOUT = 1.35V, unless otherwise noted. SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS MIN TYP MAX UNITS 0 –300 700 l 1250 1500 µV µV –1.6 –2.0 0.9 l 3.2 3.4 mV mV –350 –750 10 l 350 750 µV µV –2.8 –4 0.1 l 2.8 4 mV mV –275 l –1000 –1500 600 900 nA nA 0.6 0 1.175 l 2.5 4.0 µA µA –500 –600 –150 l 500 600 nA nA –500 –600 –30 l 500 600 nA nA VCM = Half Supply VCM = V+ – 0.5V, NPN Mode DVOS Input Offset Voltage Match (Channel-to-Channel) (Note 8) VCM = Half Supply VCM = V+ – 0.5V, NPN Mode VOS TC Input Offset Voltage Drift IB Input Bias Current (Note 7) VCM = V+ – 0.5V, NPN Mode IOS Input Offset Current 2.75 l VCM = Half Supply VCM = Half Supply VCM = V+ – 0.5V, NPN Mode Input Noise Voltage Density f = 1MHz Input 1/f Noise Voltage f = 0.1Hz to 10Hz in Input Noise Current Density f = 1MHz 3.6 pA/√Hz CIN Input Capacitance Differential Mode Common Mode 2.5 0.8 pF pF RIN Input Resistance Differential Mode Common Mode 7.2 3 kΩ MΩ en 2.9 µV/°C 2 nV/√Hz µVP-P 62537f 4 For more information www.linear.com/LTC6253-7 LTC6253-7 ELECTRICAL CHARACTERISTICS (VS = 2.7V) The l denotes the specifications which apply across the specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 2.7V, 0V; VSHDN = 2V; VCM = VOUT = 1.35V, unless otherwise noted. SYMBOL PARAMETER AVOL CMRR Large Signal Voltage Gain Common Mode Rejection Ratio VCMR Input Common Mode Range PSRR Power Supply Rejection Ratio CONDITIONS Output Swing Low (VOUT – V–) TYP 16.5 7 36 V/mV V/mV RL = 100Ω to Half Supply (Note 11) 2.3 1.8 6.9 l V/mV V/mV 80 77 105 l dB dB l 0 l 66.5 62 l 2.5 VCM = 0V to 1.2V VS = 2.5V to 5.25V, VCM = 1V No Load VS 70 mV mV 80 100 140 mV mV 110 150 190 mV mV 55 75 95 mV mV 125 150 200 mV mV 165 200 275 mV mV –35 –18 –14 mA mA l ISOURCE = 5mA l ISOURCE = 10mA l ISC Short-Circuit Current Sourcing l Sinking l IS Supply Current per Amplifier 20 17 VCM = Half Supply 40 3.5 4.5 mA mA 3.7 4.6 5.5 mA mA 24 35 50 µA µA l ISD Disable Supply Current VSHDN = 0.8V l ISHDNL ISHDNH SHDN Pin Current Low SHDN Pin Current High VSHDN = 0.8V mA mA 2.9 l VCM = V+ – 0.5V V 28 40 l No Load dB dB 5.25 l ISINK = 10mA V 22 l Output Swing High (V+ – VOUT) UNITS l ISINK = 5mA VOH MAX RL = 1k to Half Supply (Note 11) Supply Voltage Range (Note 5) VOL MIN –1 –1.5 –0.5 l 0 0 µA µA –300 –600 45 l 300 600 nA nA 0.8 V VSHDN = 2V VL SHDN Pin Input Voltage l VH SHDN Pin Input Voltage l IOSD Output Leakage Current Magnitude in Shutdown VSHDN = 0.8V, Output Shorted to Either Supply tON Turn-On Time tOFF Turn-Off Time BW –3dB Closed Loop Bandwidth AV = +7, RL = 1k to Half Supply GBW Gain-Bandwidth Product f = 10MHz, RL = 1k to Half Supply 2.0 V 100 nA VSHDN = 0.8V to 2V 5 µs VSHDN = 2V to 0.8V 2 µs l 0.8 0.5 130 MHz 1.3 GHz GHz 62537f For more information www.linear.com/LTC6253-7 5 LTC6253-7 ELECTRICAL CHARACTERISTICS (VS = 2.7V) The l denotes the specifications which apply across the specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 2.7V, 0V; VSHDN = 2V; VCM = VOUT = 1.35V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS tS , 0.1 Settling Time to 0.1% AV = +7, 2V Output Step RL = 1k, VCC = 2.35V, VEE = –0.35V 25 ns SR Slew Rate AV = –6, 2V Output Step (Note 10) 300 V/µs FPBW MIN TYP MAX UNITS Full Power Bandwidth VOUT = 2VP-P (Note 12) 11 MHz Crosstalk AV = +7, RL = 1k to Half Supply, VOUT = 2VP-P, f = 2.5MHz –88 dB 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. If any of the input or shutdown pins goes 300mV beyond either supply or the differential input voltage exceeds 1.4V the input current should be limited to less than 10mA. This parameter is guaranteed to meet specified performance through design and/or characterization. It is not production tested. Note 3: A heat sink may be required to keep the junction temperature below the absolute maximum rating when the output current is high. This parameter is guaranteed to meet specified performance through design and/or characterization. It is not production tested. Note 4: The LTC6253-7I is guaranteed to meet specified performance from –40°C to 85°C. The LTC6253-7H is guaranteed to meet specified performance from –40°C to 125°C. Note 5: Supply voltage range is guaranteed by power supply rejection ratio test. Note 6: The input bias current is the average of the average of the currents at the positive and negative input pins. Note 7: Matching parameters are the difference between the two amplifiers on the LTC6253-7. Note 8: Thermal resistance varies with the amount of PC board metal connected to the package. The specified values are with short traces connected to the leads with minimal metal area. Note 9: The output voltage is varied from 0.5V to 4.5V during measurement. Note 10: Middle 2/3 of the output waveform is observed. RL = 1k to half supply. Note 11: The output voltage is varied from 0.5V to 2.2V during measurement. Note 12: FPBW is determined from distortion performance in a gain of +7 configuration with HD2, HD3 < –40dBc as the criteria for a valid output. TYPICAL PERFORMANCE CHARACTERISTICS VOS Distribution, VCM = V+ – 0.5V (NPN Stage) VOS Distribution, VCM = VS/2 (MS, PNP Stage) 40 VS = 5V, 0V 14 VCM = 4.5V 25 20 15 10 5 200 100 12 VOLTAGE OFFSET (µV) 30 PERCENT OF UNITS (%) PERCENT OF UNITS (%) 300 16 VS = 5V, 0V 35 VCM = 2.5V 0 –250 10 8 6 4 250 62537 G01 0 –2000 VS = 5V, 0V VCM = 2.5V 6 DEVICES 0 –100 –200 –300 –400 2 –150 –50 50 150 INPUT OFFSET VOLTAGE (µV) VOS vs Temperature, VS = 5V, 0V (PNP Stage) –500 –1200 –400 400 1200 INPUT OFFSET VOLTAGE (µV) 2000 62537 G03 –600 –55 –35 –15 5 25 45 65 85 105 125 TEMPERATURE (°C) 62537 G05 62537f 6 For more information www.linear.com/LTC6253-7 LTC6253-7 TYPICAL PERFORMANCE CHARACTERISTICS VOS vs Temperature, VS = 5V, 0V (NPN Stage) 2000 1200 500 0 –500 –1000 –1500 900 800 700 600 400 –55 –35 –15 5 25 45 65 85 105 125 TEMPERATURE (°C) 2.5 5 25 45 65 85 105 125 TEMPERATURE (°C) VS = ±2.5V CHANGE IN OFFSET VOLTAGE (µV) 1.5 1.0 0.5 –55°C 0 –0.5 25°C –1.0 125°C –1.5 5 0 –5 –10 –15 –2.5 –3.0 25 50 –100 –75 –50 –25 0 OUTPUT CURRENT (mA) 5 75 –20 100 125°C 0.1Hz to 10Hz Voltage Noise 2000 VS = 5V, 0V 1500 2500 INPUT BIAS CURRENT (nA) –1000 –2000 –3000 2000 VCM = 4.5V 1500 1000 500 VCM = 2.5V 0 –4000 1 1.5 2 2.5 3 3.5 4 4.5 COMMON MODE VOLTAGE (V) 5 62537 G12 –500 –55 20 40 60 80 100 120 140 160 180 200 TIME AFTER POWER–UP (s) 62357 G11 Input Bias Current vs Temperature –55°C 0 62537 G10 3000 1000 0.5 62537 G08 Warm-Up Drift vs Time –2.0 25°C 0 200 –300 10 2.0 Input Bias Current vs Common Mode Voltage 0 700 Offset Voltage vs Output Current 3.0 62537 G09 VS = 5V, 0V 1200 VS = 2.7V, 0V –1300 VCM = 2.2V 6 DEVICES –1800 –55 –35 –15 5 25 45 65 85 105 125 TEMPERATURE (°C) 62537 G07 OFFSET VOLTAGE (mV) OFFSET VOLTAGE (µV) 600 V = 5V, 0V 400 S 200 –55°C 0 25°C –200 –400 125°C –600 –800 –1000 –1200 –1400 –1600 –1800 –2000 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 INPUT COMMON MODE VOLTAGE (V) 1700 –800 500 Offset Voltage vs Input Common Mode Voltage 2000 2200 1000 62537 G06 3000 2700 VOLTAGE NOISE (500nV/DIV) VS = 5V, 0V –2000 VCM = 4.5V 6 DEVICES –2500 –55 –35 –15 INPUT BIAS CURRENT (nA) 3200 VOLTAGE OFFSET (µV) VOLTAGE OFFSET (µV) 1000 –5000 VOS vs Temperature, VS = 2.7V, 0V (NPN Stage) VS = 2.7V, 0V 1100 VCM = 1.35V 6 DEVICES 1500 VOLTAGE OFFSET (µV) VOS vs Temperature, VS = 2.7V, 0V (PNP Stage) 1000 500 0 –500 –1000 –1500 –25 5 35 65 TEMPERATURE (°C) 95 125 62537 G13 –2000 0 1 2 3 4 5 6 7 TIME (1s/DIV) 8 9 10 62537 G14 62537f For more information www.linear.com/LTC6253-7 7 LTC6253-7 TYPICAL PERFORMANCE CHARACTERISTICS Input Noise Voltage and Noise Current vs Frequency Supply Current vs Supply Voltage (Per Amplifier) 5 5.0 1000 Supply Current vs Input Common Mode Voltage (Per Amplifier) VS = 5V, 0V AV = 1 4.0 in, VCM = 2.5V 10 0.1 en, VCM = 2.5V 1 10 100 25°C 3.0 2.5 –55°C 2.0 1.5 0 1 3 2 4 TOTAL SUPPLY VOLTAGE (V) 0 3.0 TA = –55°C SHDN PIN CURRENT (µA) SUPPLY CURRENT (mA) TA = 25°C 2.5 2.0 1.5 1.0 0.5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 SHDN PIN VOLTAGE (V) 4.5 5 0.50 0.25 VS = 5V, 0V 0 –0.25 –0.50 TA = 25°C –0.75 –1.00 TA = –55°C –1.25 –1.50 –1.75 TA = 125°C –2.00 –2.25 –2.50 –2.75 –3.00 0 0.5 1 1.5 2 2.5 3 3.5 4 SHDN PIN VOLTAGE (V) OFFSET VOLTAGE (mV) 12 10 –55°C 8 6 25°C 4 2 125°C 0 –2 –4 2 2.5 3 4 4.5 5 3.5 TOTAL SUPPLY VOLTAGE (V) 5.5 62537 G21 10 OUTPUT HIGH SATURATION VOLTAGE (V) 14 62537 G17 16 Minimum Supply Voltage, VCM = VS/2 (PNP Operation) VS = 5V, 0V 14 12 –55°C 10 8 6 4 25°C 125°C 2 0 4.5 –2 5 2 2.5 3 4 4.5 5 3.5 TOTAL SUPPLY VOLTAGE (V) Output Saturation Voltage vs Load Current (Output Low) 10 VS = ±2.5V 1 TA = 125°C TA = 25°C 0.1 0.01 0.01 TA = –55°C 0.1 1 10 LOAD CURRENT (mA) 5.5 62537 G20 Output Saturation Voltage vs Load Current (Output High) Minimum Supply Voltage, VCM = V+ – 0.5V (NPN Operation) VS = 5V, 0V 3.25 1.25 2.25 4.25 4.75 COMMON MODE VOLTAGE (V) 62537 G19 62537 G18 16 2 0.25 5 SHDN Pin Current vs SHDN Pin Voltage 5.0 3.5 –55°C 62537 G16 Supply Current Per Amplifier vs SHDN Pin Voltage TA = 125°C 3 0.5 62537 G15 4.0 25°C 1.0 in, VCM = 4.5V 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) VS = 5V, 0V 4.5 VCM = 2.5V 125°C 4 OFFSET VOLTAGE (mV) 1.0 125°C 3.5 SUPPLY CURRENT (mA) en, VCM = 4.5V OUTPUT HIGH SATURATION VOLTAGE (V) 100 SUPPLY CURRENT (mA) VOLTAGE NOISE (nV/√Hz) CURRENT NOISE (pA/√Hz) 4.5 100 62537 G22 VS = ±2.5V 1 TA = 125°C 0.1 TA = 25°C TA = –55°C 0.01 0.01 0.1 1 10 LOAD CURRENT (mA) 100 62537 G23 62537f 8 For more information www.linear.com/LTC6253-7 LTC6253-7 TYPICAL PERFORMANCE CHARACTERISTICS Output Short-Circuit Current vs Supply Voltage Open Loop Gain PULSE TESTED 0 –40 TA = 25°C TA = 125°C –80 SOURCE TA = –55°C 2 2.25 1.5 1.75 TOTAL SUPPLY VOLTAGE (±V) 2.5 RL = 100Ω TO MID SUPPLY 200 RL = 1k TO MID SUPPLY 100 0 –100 RL = 1k TO GND –200 –300 RL = 100Ω TO GND –400 –500 0 0.5 1 1.5 2 2.5 3 3.5 OUTPUT VOLTAGE (V) 4 62537 G24 20 4.5 400 RL = 1k TO GND 200 0 RL = 100Ω TO GND –200 0 0.5 1 1.5 2 OUTPUT VOLTAGE (V) GAIN (dB) 8 6 62537 G26 80 1M 10M 100M FREQUENCY (Hz) 50 40 GAIN 30 62537 G27 90 2500 80 2350 1700 50 1600 40 1500 30 GAIN BANDWIDTH PRODUCT 20 1300 3 3.50 4 4.50 SUPPLY VOLTAGE (V) VS = ±2.5V 30 20 VS = ±1.35V 10 0 400 100 FREQUENCY (MHz) 10 5 5.25 RL = 1kΩ 2200 60 1900 1600 1450 GBW, 5V SUPPLY PHASE MARGIN, 5V SUPPLY GBW, 2.7V SUPPLY PHASE MARGIN, 2.7V SUPPLY 50 40 30 1300 20 1150 1000 –55 –35 –15 62537 G30 80 70 2050 1750 90 PHASE MARGIN (DEG) 60 PHASE MARGIN (DEG) 70 PHASE MARGIN 1800 1200 2.50 40 Gain Bandwidth and Phase Margin vs Temperature PHASE MARGIN MEASURED AT AN OPEN LOOP GAIN OF 7V/V RL = 1kΩ 1400 60 62537 G29 Gain Bandwidth and Phase Margin vs Supply Voltage 1900 70 50 VS = ±1.35V 10 TA = 25°C RL = 1k 0 3 10 1G VS = ±2.5V PHASE 20 VS = ±2.5 V RF = 365Ω RL =1k 100k 2.5 PHASE (DEG) 10 2000 600 –600 5 60 12 2100 800 70 14 2200 RL = 1k TO MID SUPPLY 1000 80 0 10k VS = 2.7V, 0V TA = 25°C Open Loop Gain and Phase vs Frequency Gain vs Frequency (AV = 7) 16 2 1200 62537 G25 18 4 RL = 100Ω TO MID SUPPLY –400 GAIN BANDWIDTH PRODUCT (MHz) –160 1.25 GAIN (dB) –120 300 1400 INPUT OFFSET VOLTAGE (µV) 40 INPUT OFFSET VOLTAGE (µV) TA = –55°C 1600 VS = 5V, 0V TA = 25°C 400 TA = 125°C 80 Open Loop Gain 500 TA = 25°C SINK 120 GAIN BANDWIDTH PRODUCT (MHz) OUTPUT SHORT-CIRCUIT CURRENT (mA) 160 10 5 25 45 65 85 105 125 TEMPERATURE ( °C) 62537 G31 62537f For more information www.linear.com/LTC6253-7 9 LTC6253-7 TYPICAL PERFORMANCE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency Output Impedance vs Frequency 100 AV = 7, RF = 499Ω VS = ±2.5V TA = 25°C 90 80 100 70 CMRR (dB) OUTPUT IMPEDANCE (Ω) 1k 10 VS = ±1.35V VS = ±2.5V 60 50 40 30 1 20 10 0.1 0.1 1 10 FREQUENCY (MHz) 100 0 100k 500 1M 10M 100M FREQUENCY (Hz) 62537 G32 62537 G33 Power Supply Rejection Ratio vs Frequency Slew Rate vs Temperature 650 VS = ±2.5V 70 625 600 60 50 PSRR– 40 30 20 10 100 1k 475 FALLING 450 SLEW RATE MEASURED AT MIDDLE 2/3 OF OUTPUT 350 –55 –35 –15 5 25 45 65 85 105 125 TEMPERATURE (°C) 10k 100k 1M 10M 100M 1G FREQUENCY (Hz) 62537 G35 Distortion vs Frequency, 5V Supply Series Output Resistor vs Capacitive Load (AV = 7) 42 RS = 20Ω 36 30 RS = 10Ω 24 18 –20 VS = ±2.5V –30 AV = 7, RF = 499Ω VOUT = 2VP-P –40 DISTORTION (dBc) VS = ±2.5V RF = 499Ω, RG = 82.5Ω, RL = ∞ 100mV OUTPUT STEP 48 OVERSHOOT (%) 500 375 54 RG 82.5Ω –50 –60 –70 3RD, RL = 100Ω VIN RF 499Ω – + RL –80 –90 2ND, RL = 1k –100 12 RS = 50Ω 6 0 RISING 525 400 62537 G34 60 550 425 10 0 VS = ±2.5V ∆VOUT = 4VP-P AV = –6V, R F = 590Ω 575 PSRR+ SLEW RATE (V/µs) POWER SUPPLY REJECTION RATIO (dB) 80 1G 10 –110 100 1000 CAPACITIVE LOAD (pF) 10000 3RD, RL = 1k 2ND, RL = 100Ω –120 0.01 0.1 1 FREQUENCY (MHz) 62537 G36 10 62537 G38 62537f 10 For more information www.linear.com/LTC6253-7 LTC6253-7 TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Frequency, 2.7V Supply –50 –20 3RD, RL = 100Ω RG 82.5Ω –50 –60 – + VIN –70 AV = 7,RF = 3kΩ, R G = 499Ω, R L = 1kΩ –60 VOUT = 2VP-P, VS = ±2.5V VOUT = 1VP-P, VS = ±1.35V –70 RF 499Ω RL –80 –90 2ND, RL = 1k –100 3RD, RL = 1k –110 –120 0.01 DISTORTION (dBc) DISTORTION (dBc) VS = ±1.35V –30 AV = 7, RF = 499Ω VOUT = 1VP-P –40 Distortion vs Frequency, (Moderate Loading, AV = 7) –80 –90 HD3, VS = ±1.35V –100 HD3, VS = ±2.5V –110 2ND, RL = 100Ω –120 0.1 1 FREQUENCY (MHz) HD2, VS = ±1.35V –130 0.01 10 HD2, VS = ±2.5V 0.1 1 FREQUENCY (MHz) 62537 G49 62537 G39 0.1% Settling Time vs Output Step Maximum Undistorted Output Signal vs Frequency 45 4 3 2 1 SHDN Pin Response Time VS = 4.5V, –0.5V AV = 7 40 SETTLING TIME (ns) OUTPUT VOLTAGE SWING (VP-P) 5 10 VS = ±2.5V AV = 7 RF = 499Ω RL = 1k HD2, HD3 ≤ –40dBc 0 0.01 0.1 1 10 FREQUENCY (MHz) 100 VOUT 1V/DIV 35 VSHDN 2V/DIV 30 25 –4 –3 –2 –1 0 1 2 OUTPUT STEP (V) 3 4 AV = 7 VS = ±2.5V RL = 1k VIN = 280mV 62537 G43 62537 G42 Large Signal Response Small Signal Response 62537 G45 2µs/DIV Output Overdriven Recovery OUTPUT 50mV/DIV 0mV VOUT 2V/DIV 0mV VIN 500mV/DIV 1V/DIV INPUT 10mV/DIV AV = 7 VS = ±2.5V TA = 25°C RL = 1k 20ns/DIV 62537 G46 AV = 7 VS = ±2.5V TA = 25°C RL = 1k 5ns/DIV 62537 G47 AV = 7 VS = ±2.5V TA = 25°C VIN = 1VP-P 20ns/DIV 62537 G48 62537f For more information www.linear.com/LTC6253-7 11 LTC6253-7 PIN FUNCTIONS –IN: Inverting Input of Amplifier. Input range from V– to V+. V– : Negative Supply Voltage. Typically 0V. This can be made a negative voltage as long as 2.5V ≤ (V+ – V–) ≤ 5.25V. +IN: Non-Inverting Input of Amplifier. Input range from V– to V+. SHDN: Active Low Shutdown. Threshold is typically 1.1V referenced to V–. Floating this pin will turn the part on. V+ : Positive Supply Voltage. Total supply voltage ranges from 2.5V to 5.25V. OUT: Amplifier Output. Swings rail-to-rail and can typically source/sink over 90mA of current at a total supply of 5V. APPLICATIONS INFORMATION Circuit Description The LTC6253-7 has an input and output signal range that extends from the negative power supply to the positive power supply. Figure 1 depicts a simplified schematic of the amplifier. The input stage is comprised of two differential amplifiers, a PNP stage, Q1/Q2, and an NPN stage, Q3/Q4 that are active over different common mode input voltages. The PNP stage is active between the negative supply to nominally 1.2V below the positive supply. As the input voltage approaches the positive supply, the 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, at the input stage, devices Q17 to Q19 act to cancel the bias current of the PNP input pair. When Q1/Q2 are active, the current in Q16 is controlled to be the same as the current in Q1 and Q2. Thus, the base current of Q16 is nominally equal to the base current of the input devices. The base current of Q16 is then mirrored by devices Q17 to Q19 to cancel the base current of the input devices Q1/ Q2. A pair of complementary common emitter stages, Q14/ Q15, enable the output to swing from rail-to-rail. V+ V+ + ESDD1 I2 R3 V– ESDD2 + I1 D6 D8 D5 D7 –IN Q13 + VBIAS Q5 Q3 Q1 Q17 Q18 Q9 V+ Q19 ESDD5 OUT ESDD3 V– I3 Q2 BUFFER AND OUTPUT BIAS Q10 Q16 Q15 V– Q4 ESDD4 R5 Q12 Q11 +IN R4 Q7 ESDD6 Q8 Q6 R1 V– R2 Q14 625234 F01 Figure 1. LTC6253-7 Simplified Schematic Diagram 62537f 12 For more information www.linear.com/LTC6253-7 LTC6253-7 APPLICATIONS INFORMATION Input Offset Voltage Input Protection The offset voltage will change depending upon which input stage is active. The PNP input stage is active from the negative supply rail to approximately 1.2V below the positive supply rail, then the NPN input stage is activated for the remaining input range up to the positive supply rail with the PNP stage inactive. The offset voltage magnitude for the PNP input stage is trimmed to less than 350µV with 5V total supply at room temperature, and is typically less than 150μV. The offset voltage for the NPN input stage is less than 2.2mV with 5V total supply at room temperature. The LTC6253-7’s input stages are protected against a large differential input voltage of 1.4V or higher by 2 pairs of back-to-back diodes to prevent the emitter-base breakdown of the input transistors. In addition, the input and shutdown pins have reverse biased diodes connected to the supplies. The current in these diodes must be limited to less than 10mA. The amplifiers should not be used as comparators or in other open loop applications. Input Bias Current The LTC6253-7 uses a bias current cancellation circuit to compensate for the base current of the PNP input pair. This results in a typical IB of about 100nA. When the input common mode voltage is less than 200mV, the bias cancellation circuit is no longer effective and the input bias current magnitude can reach a value above 4µA. For common mode voltages ranging from 0.2V above the negative supply to 1.2V below the positive supply, the low input bias current allows the amplifiers to be used in applications with high source resistances where errors due to voltage drops must be minimized. Output The LTC6253-7 has excellent output drive capability. The amplifiers can typically deliver 90mA of output drive current at a total supply of 5V. The maximum output current is a function of the total supply voltage. As the supply voltage to the amplifier decreases, the output current capability also decreases. Attention must be paid to keep the junction temperature of the IC below 150°C (refer to the Power Dissipation Section) when the output is in continuous short-circuit. The output of the amplifier has reverse-biased diodes connected to each supply. If the output is forced beyond either supply, extremely high current will flow through these diodes which can result in damage to the device. Forcing the output to even 1V beyond either supply could result in several hundred milliamps of current through either diode. ESD The LTC6253-7 has reverse-biased ESD protection diodes on all inputs and outputs as shown in Figure 1. There is an additional clamp between the positive and negative supplies that further protects the device during ESD strikes. Hot plugging of the device into a powered socket must be avoided since this can trigger the clamp resulting in larger currents flowing between the supply pins. Capacitive Loads The LTC6253-7 has been optimized for speed and should not be used to drive large capacitors without resistive isolation. Increased capacitance at the output creates an additional pole in the open loop frequency response, worsening the phase margin. When driving capacitive loads, a resistor of 10Ω to 100Ω should be connected between the amplifier output and the capacitive load to avoid ringing or oscillation. The feedback should be taken directly from the amplifier output. Higher voltage gain configurations tend to have better capacitive drive capability than lower gain configurations due to lower closed loop bandwidth and hence higher phase margin. The graphs titled Series Output Resistor vs Capacitive Load demonstrate the transient response of the amplifier when driving capacitive loads with various series resistors. 62537f For more information www.linear.com/LTC6253-7 13 LTC6253-7 APPLICATIONS INFORMATION Feedback Components Power Dissipation When feedback resistors are used to set up gain, 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 if the amplifier is set up in a gain of +11 configuration with a gain resistor of 1k and a feedback resistor of 10k, a parasitic capacitance of 7pF (device + PC board) at the amplifier’s inverting input will cause the part to oscillate, due to a pole formed at 25MHz. An additional capacitor of 0.7pF across the feedback resistor as shown in Figure 2 will eliminate any ringing or oscillation. In general, if the resistive feedback network results in a pole whose frequency lies within the closed loop bandwidth of the amplifier, a capacitor can be added in parallel with the feedback resistor to introduce a zero whose frequency is close to the frequency of the pole, improving stability. The LTC6253-7 is housed in a small 10-lead MS package and typically has a thermal resistance (qJA) of 160°C/ W. It is necessary to ensure that the die’s junction temperature does not exceed 150°C. The junction temperature, TJ, is calculated from the ambient temperature, TA, power dissipation, PD, and thermal resistance, qJA: 2 10k – VOUT + Example: For an LTC6253-7 operating on ±2.5V supplies and driving a 100Ω load to ground, the worst-case power dissipation is approximately given by PD(MAX)/Amp = (5 • 4.8mA) + (1.25)2/100 = 39.6mW 1k VIN The power dissipation in the IC is a function of the supply voltage, output voltage and load resistance. For a given supply voltage with output connected to ground or supply, the worst-case power dissipation PD(MAX) occurs when the supply current is maximum and the output voltage at half of either supply voltage for a given load resistance. PD(MAX) is approximately (since IS actually changes with output load current) given by: V PD(MAX) = (VS •IS(MAX) ) + S / RL 2 0.7pF CPAR TJ = TA + (PD • qJA) 62537 F02 Figure 2. 0.7pF Feedback Cancels Parasitic Pole If both amplifiers are loaded simultaneously then the total power dissipation is 79.2mW. At the Absolute Maximum ambient operating temperature, the junction temperature under these conditions will be: Shutdown The LTC6253-7 has SHDN pins that can shut down the amplifier to 42µA typical supply current. The SHDN pin needs to be taken within 0.8V of the negative supply for the amplifier to shut down. When left floating, the SHDN pin is internally pulled up to the positive supply and the amplifier remains on. TJ = TA + PD • 160°C/W = 125 + (0.079W • 160°C/W) = 137°C which is less than the absolute maximum junction temperature for the LTC6253-7 (150°C). 62537f 14 For more information www.linear.com/LTC6253-7 LTC6253-7 TYPICAL APPLICATIONS ADC Driver with Gain VS+ Figure 3 shows the LTC6253-7 acting as a gain of 7 stage driving the LTC2314-14 14-bit A/D converter. With a gain of 7V/V, for a 20.5kHz signal a handsome SFDR of 89dB can be obtained at a –1dBFS input signal, with an SNR of 72dB, at a sampling frequency of 2Msps. Figure 4 shows the FFT of the ADC’s output. 5V 4.4V VIN = 0V TO 580mV + – ½ LTC6253-7 R1 V+ 100Ω OUT V– R2 1.21k –0.7V C1 47pF CS CS SCK SDO SDO + U3 ½ LTC6253 VOUT VS– – + IN– – R2 1.2k VS– R8 750Ω R6 750Ω 62537 F05 AV = 41 BW = 47MHz VS = ±1.65V IS = 9mA Figure 5. High Speed Low Voltage Instrumentation Amplifier GND 62537 F03 Figure 3. ADC Driver with Gain fS = 2Msps F1 = 20.5kHz F1 AMPLITUDE = –0.916dBFS SFDR = 89dB SNR = 72dB are channels from an LTC6253-7. Op amp U3 can be an LTC6252 or one channel of an LTC6253. An RC snubber is used at the common terminal of the 30Ω gain setting resistors to eliminate the effects of any board layout induced coupling from the output of an amplifier to the negative input of the other amplifier. Figure 6 shows the measured frequency response of the instrumentation amplifier for 40 36 32 28 GAIN (dB) AMPLITUDE (dBFS) VS+ R3 30.1Ω U2 ½ LTC6253-7 R3 200Ω 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 C1 R9 15pF 200Ω R4 30.1Ω SCK R7 750Ω R1 1.2k REF OVDD LTC2314-14 8-PIN TSOT R5 750Ω – C7 2.2µF VDD AIN U1 ½ LTC6253-7 3.3V C6 2.2µF C5 2.2µF + IN+ 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (kHz) 62537 F04 Figure 4. Dynamic Performance, LTC6253-7 Driving LTC2314-14 24 20 16 12 8 4 0 10k High Speed Low Voltage Instrumentation Amplifier Figure 5 shows a high speed three op amp instrumentation amplifier with a gain of 41V/V and bandwidth of 47MHz, operating from a total supply of 3.3V. Op amps U1 and U2 100k 1M 10M FREQUENCY (Hz) 100M 400M 62537 F06 Figure 6. Instrumentation Amplifier Frequency Response 62537f For more information www.linear.com/LTC6253-7 15 LTC6253-7 TYPICAL APPLICATIONS a load of 1k. Figure 7 shows the measured CMRR across frequency. Figure 8 shows the transient response with a 1.6VP-P output step, with the input applied to the positive input of the instrumentation amplifier, with the negative input grounded. RF RG – RC VIN VOUT + 62537 F09 100 Figure 9. Low Gain Stage with Higher Noise Gain 90 70 15 60 13 50 11 40 9 30 7 GAIN (dB) CMRR (dB) 80 20 10 0 10k 100k 1M 10M FREQUENCY (Hz) 100M 400M 62537 F07 Figure 7. Instrumentation Amplifier CMRR VS = ±2.5V RL = 1k 5 3 1 –1 –3 –5 100k 1M 10M 100M FREQUENCY (Hz) 1G 62537 F10 OUTPUT 800mV/DIV 0V Figure 10. Frequency Response, Low Gain Stage Using the LTC6253-7 INPUT 20mV/DIV 0V 50ns/DIV 62537 F08 Figure 8. Instrumentation Amplifier Transient Response Using a Gain-of-7 Stable Op Amp to Achieve Low Closed Loop Gains Many applications may demand higher slew rates and bandwidths associated with decompensated op amps like the LTC6253-7, but with lower closed loop gains. Any circuit using the LTC6253-7 will be stable as long as the noise gain (gain for any noise referred to the inputs of the operational amplifier) is 7 or higher. Figure 9 shows how such a circuit can be implemented. The overall signal gain is 1 + RF/RG, however the noise gain is 1 + RF/(RG||RC). Figure 10 shows the measured frequency response of such a circuit. The low frequency gain is 9.5dB (~3V/V) and is achieved by making RF = 499Ω and RG = 249Ω. Resistor RC is chosen to be 124Ω, leading to a noise gain of approximately 7V/V. The measured bandwidth of the circuit is an impressive 147MHz. Figure 11 shows a 4VP-P output at a frequency of 13MHz. Note that for RG = ∞, RC = 82.5Ω, a closed loop gain of +1 can be obtained, with a noise gain of 7V/V, and such a circuit can be implemented with the LTC6253-7. 2V/DIV 20ns/DIV 62537 F11 Figure 11. Transient Response, Sinusoidal Input 62537f 16 For more information www.linear.com/LTC6253-7 LTC6253-7 PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LTC6253-7#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) 3.00 ±0.102 (.118 ±.004) (NOTE 4) 4.90 ±0.152 (.193 ±.006) DETAIL “A” 0.497 ±0.076 (.0196 ±.003) REF 10 9 8 7 6 0° – 6° TYP GAUGE PLANE 1 2 3 4 5 0.53 ±0.152 (.021 ±.006) DETAIL “A” 0.18 (.007) SEATING PLANE 1.10 (.043) MAX 0.86 (.034) REF 0.17 – 0.27 (.007 – .011) TYP 0.50 (.0197) NOTE: BSC 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 62537f 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 itsinformation circuits as described herein will not infringe on existing patent rights. For more www.linear.com/LTC6253-7 17 LTC6253-7 TYPICAL APPLICATION Frequency Response 50 101V/V 100MHz Gain Block – 100Ω 2.5V – 100Ω ½ LTC6253-7 2.5V ½ LTC6253-7 + VIN 40 909Ω + GAIN (dB) 909Ω VOUT 30 20 10 –2.5V –2.5V 62537 TA02a 0 100k 1M 10M FREQUENCY (Hz) 100M 400M 62537 TA02b RELATED PARTS PART NUMBER DESCRIPTION COMMENTS Operational Amplifiers LTC6252/LTC6253/ LTC6254 Single/Dual/Quad High Speed Rail-to-Rail Input and Output Op Amps 720MHz, 3.5mA, 2.75nV/√Hz, 280V/µs, 0.35mV, Unity Gain Stable LTC6268-10/ LTC6269-10 Single/Dual High Speed FET Input Op Amp 4GHz, 4nV/√Hz, ±3fA Input Bias Current LT1818/LT1819 Single/Dual Wide Bandwidth, High Slew Rate Low Noise and Distortion Op Amps 400MHz, 9mA, 6nV/√Hz, 2500V/µs, 1.5mV –85dBc at 5MHz LT1806/LT1807 Single/Dual Low Noise Rail-to-Rail Input and Output Op Amps 325MHz, 13mA, 3.5nV/√Hz, 140V/µs, 550µV, 85mA Output Drive LTC6246/LTC6247/ LTC6248 Single/Dual/Quad High Speed Rail-to-Rail Input and Output Op Amps 180MHz, 1mA, 4.2nV/√Hz, 90V/µs, 0.5mV LT6230/LT6231/ LT6232 Single/Dual/Quad Low Noise Rail-to-Rail Output Op Amps 215MHz, 3.5mA, 1.1nV/√Hz, 70V/µs, 350µV LT6200/LT6201 Single/Dual Ultralow Noise Rail-to-Rail Input/Output Op Amps 165MHz, 20mA, 0.95nV/√Hz, 44V/µs, 1mV LT6202/LT6203/ LT6204 Single/Dual/Quad Ultralow Noise Rail-to-Rail Op Amp 100MHz, 3mA, 1.9nV/√Hz, 25V/µs, 0.5mV LT1468 16-Bit Accurate Precision High Speed Op Amp 90MHz, 3.9mA, 5nV/√Hz, 22V/µs, 175µV, –96.5dB THD at 10VP-P, 100kHz LT1801/LT1802 Dual/Quad Low Power High Speed Rail-to-Rail Input and Output Op Amps 80MHz, 2mA, 8.5nV√Hz, 25V/µs, 350µV LT1028 Ultralow Noise, Precision High Speed Op Amps 75MHz, 9.5mA, 0.85nV/√Hz, 11V/µs, 40µV LTC6350 Low Noise Single-Ended to Differential Converter/ADC Driver 33MHz (–3dB), 4.8mA, 1.9nV/√Hz, 240ns Settling to 0.01% 8VP-P ADCs LTC2393-16 1Msps 16-Bit SAR ADC 94dB SNR LTC2366 3Msps, 12-Bit ADC Serial I/O 72dB SNR, 7.8mW No Data Latency TSOT-23 Package LTC2365 1Msps, 12-Bit ADC Serial I/O 73dB SNR, 7.8mW No Data Latency TSOT-23 Package 62537f 18 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 For more information www.linear.com/LTC6253-7 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LTC6253-7 LT 0216 • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2016