LT6236/LT6237/LT6238 Rail-to-Rail Output 215MHz, 1.1nV/Hz Op Amp/SAR ADC Driver Fea T Descrip T n Low Noise: 1.1nV/Hz The LT 6236/LT6237/LT6238 are single/dual/quad low n Low Supply Current: 3.5mA/Amp Max noise, rail-to-rail output op amps that feature 1.1nV/Hz n Low Offset Voltage: 350V Max input referred noise voltage density and draw only 3.5mA n Fast Settling Time: 570ns to 18-Bit, 2V Output of supply current per amplifier. These amplifiers combine P-P n Low Distortion: THD = 116.8dB at 2kHz very low noise and supply current with a 215MHz gain n Wide Supply Range: 3V to 12.6V bandwidth product and a 70V/s slew rate. Low noise, fast n Output Swings Rail-to-Rail settling time and low offset voltage make this amplifier n 215MHz Gain-Bandwidth Product optimal to drive low noise, high speed SAR ADCs. The n Specified Temperature Range: 40C to 125C LT6236 includes a shutdown feature that can be used to n LT6236 Shutdown to 10A Max reduce the supply current to less than 10A. n LT6236 in Low Profile (1mm) ThinSOT Package This amplifier family has an output that swings within n Dual LT6237 in 3mm 3mm 8-Lead DFN and 8-Lead 50mV of either supply rail to maximize the signal dynamic MSOP Packages range in low supply applications and is specified on 3.3V, n LT6238 in 16-Lead SSOP Package 5V and 5V supplies. The LT6236/LT6237/LT6238 are upgrades to the LT6230/ a T LT6231/LT6232, offering similar performance with reduced wideband noise beyond 100kHz. n 16-Bit and 18-Bit SAR ADC Drivers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n Active Filters ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property n of their respective owners. Low Noise, Low Power Signal Processing Typical a T Differentially Driving a SAR ADC LT6237 Driving LTC2389-18 f = 2kHz, IN 1dBFS, 32768-Point FFT + V = 6V S 0 V = 7.3V + OUT P-P 10 IN + HD2 = 129.5dBc 20 LOWPASS FILTERS HD3 = 118.7dBc 1/2 LT6237 30 SFDR = 117.7dB 38.3 49.9 40 THD = 116.8dB 50 SNR = 99.7dB + IN 18-BIT 270pF 60 SINAD = 98.9dB 70 LTC2389-18 80 90 270pF IN 2.5Msps 38.3 49.9 100 110 623637 TA01a 120 1/2 LT6237 130 140 IN + 150 V = 2V S 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 FREQUENCY (MHz) 62367 TA01b 623637fb 1 For more information www.linear.com/LT6236 AMPLITUDE (dBFS) ion pplica ions pplica ion uresLT6236/LT6237/LT6238 a Te Maxi Mu M r a T (Note 1) + Total Supply Voltage (V to V ) ..............................12.6V Specified Temperature Range (Note 5).....40C to125C Input Current (Note 2) ......................................... 40mA Maximum Junction Temperature .......................... 150C Output Short-Circuit Duration (Note 3) ............ Indefinite Storage Temperature Range .................. 65C to 150C Operating Temperature Range (Note 4).. 40C to 125C p c F T TOP VIEW TOP VIEW OUT A 1 16 OUT D IN A 2 15 IN D TOP VIEW + OUT A 1 8 V TOP VIEW +A D +IN A 3 14 +IN D + + IN A 2 7 OUT B OUT 1 6 V OUT A 1 8 V + 9 V 4 13 V IN A 2 7 OUT B +IN A IN B 3 6 V 2 5 ENABLE +IN A 3 6 IN B +IN B 5 12 +IN C + V 4 5 +IN B +IN 3 4 IN V 4 5 +IN B B C IN B 6 11 IN C MS8 PACKAGE S6 PACKAGE OUT B 7 10 OUT C 8-LEAD PLASTIC MSOP DD PACKAGE 6-LEAD PLASTIC TSOT-23 8-LEAD (3mm 3mm) PLASTIC DFN T = 150C, = 273C/W NC 8 9 NC JMAX JA T = 150C, = 192C/W JMAX JA T = 150C, = 43C/W JMAX JA UNDERSIDE METAL CONNECTED TO V GN PACKAGE (PCB CONNECTION OPTIONAL) 16-LEAD NARROW PLASTIC SSOP T = 150C, = 110C/W JMAX JA o r D i n F Ma T SPECIFIED LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT6236CS6 TRMPBF LT6236CS6 TRPBF LTGHM 6-Lead Plastic TSOT-23 0C to 70C LT6236IS6 TRMPBF LT6236IS6 TRPBF LTGHM 6-Lead Plastic TSOT-23 40C to 85C LT6236HS6 TRMPBF LT6236HS6 TRPBF LTGHM 6-Lead Plastic TSOT-23 40C to 125C LT6237CDD PBF LT6237CDD TRPBF LGHN 8-Lead (3mm 3mm) Plastic DFN 0C to 70C LT6237IDD PBF LT6237IDD TRPBF LGHN 8-Lead (3mm 3mm) Plastic DFN 40C to 85C LT6237HDD PBF LT6237HDD TRPBF LGHN 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT6237CMS8 PBF LT6237CMS8 TRPBF LTGHP 8-Lead Plastic MSOP 0C to 70C LT6237IMS8 PBF LT6237IMS8 TRPBF LTGHP 8-Lead Plastic MSOP 40C to 85C LT6237HMS8 PBF LT6237HMS8 TRPBF LTGHP 8-Lead Plastic MSOP 40C to 125C LT6238CGN PBF LT6238CGN TRPBF 6238 16-Lead Narrow Plastic SSOP 0C to 70C LT6238IGN PBF LT6238IGN TRPBF 6238 16-Lead Narrow Plastic SSOP 40C to 85C LT6238HGN PBF LT6238HGN TRPBF 6238 16-Lead Narrow Plastic SSOP 40C to 125C TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on lead based finish parts. For more information on lead free part marking, go to: