LTC6268-10/LTC6269-10 4GHz Ultra-Low Bias Current FET Input Op Amp FEATURES DESCRIPTION n Gain Bandwidth Product: 4GHz The LTC 6268-10/LTC6269-10 is a single/dual 4GHz FET- n Low Input Bias Current: input operational amplifier with extremely low input bias n 3fA Typ. Room Temperature current and low input capacitance. It also features low n 4pA Max at 125C input-referred current noise and voltage noise making it an n ideal choice for high speed transimpedance amplifiers, and Current Noise (100kHz): 7fA/Hz n high-impedance sensor amplifiers. It is a decompensated Voltage Noise (1MHz): 4.0nV/Hz n op amp that is gain-of-10 stable. Extremely Low C 0.45pF IN n Rail-to-Rail Output It operates on 3.1V to 5.25V supply and consumes 16.5mA n A 10 V per amplifier. A shutdown feature can be used to lower n Slew Rate: +1500V/s, 1000V/s power consumption when the amplifier is not in use. n Supply Range: 3.1V to 5.25V The LTC6268-10 single op amp is available in 8-lead SOIC n Quiescent Current: 16.5mA and 6-lead SOT-23 packages. The SOIC package includes n Operating Temp Range: 40C to 125C two unconnected pins which can be used to create an input n Single in 8-Lead SO-8, 6-Lead TSOT-23 Packages pin guard ring to protect against board leakage currents. n Dual in 8-Lead MS8, 3mm 3mm 10-Lead The LTC6269-10 dual op amp is available in 8-lead MSOP DFN 10 Packages with exposed pad and 3mm 3mm 10-lead DFN packages. They are fully specified over the 40C to 85C and the 40C to 125C temperature ranges. APPLICATIONS L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Transimpedance Amplifiers Technology Corporation. All other trademarks are the property of their respective owners. n ADC Drivers n Photomultiplier Tube Post-Amplifier n Low I Circuits BIAS TYPICAL APPLICATION 20k TIA Frequency Response 20k Gain 210MHz Transimpedance Amplifier 90 87 84 PARASITIC 81 20k FEEDBACK C 2.5V 78 2.5V PD 75 72 V = I 20k I OUT PD PD LTC6268-10 69 BW = 210MHz + 66 63 2.5V 626810 TA01 60 10k 100k 1M 10M 100M 1G PD = OSI OPTOELECTRONICS, FCI-125G-006 FREQUENCY (Hz) 626810 TA01b 626810f 1 For more information www.linear.com/LTC6268-10 GAIN (dB)LTC6268-10/LTC6269-10 ABSOLUTE MAXIMUM RATINGS (Note 1) + Supply Voltage V to V ...........................................5.5V Specified Temperature Range (Note 4) + Input Voltage ...............................V 0.2V to V + 0.2V LTC6268-10I/LTC6269-10I ...................40C to 85C Input Current (+IN, IN) (Note 2) ........................... 1mA LTC6268-10H/LTC6269-10H .............. 40C to 125C Input Current (SHDN) ............................................ 1mA Maximum Junction Temperature .......................... 150C Output Current (I ) (Note 8, 9) .........................135mA Storage Temperature Range .................. 65C to 150C OUT Output Short-Circuit Duration (Note 3) ...Thermally Limited Lead Temperature S8, S6 and Operating Temperature Range MS8E (Soldering, 10 sec) .................................300C LTC6268-10I/LTC6269-10I ...................40C to 85C LTC6268-10H/LTC6269-10H .............. 40C to 125C PIN CONFIGURATION TOP VIEW TOP VIEW NC 1 8 SHDN + OUT 1 6 V + IN 2 7 V V 2 5 SHDN +IN 3 6 OUT +IN 3 4 IN NC 4 5 V S6 PACKAGE S8 PACKAGE 6-LEAD PLASTIC TSOT-23 8-LEAD PLASTIC SO T = 150C, = 192C/W (NOTE 5) JMAX JA T = 150C, = 120C/W (NOTE 5) JMAX JA TOP VIEW TOP VIEW OUTA 1 10 V+ + OUTA 1 8 V INA 2 9 OUTB 11 INA 2 9 7 OUTB +INA 3 8 INB +INA 3 V 6 INB V 4 7 5 +INB V +INB V 4 SDA 5 6 SDB MS8E PACKAGE 8-LEAD PLASTIC MSOP DD PACKAGE T = 150C, = 40C/W (NOTE 5) JMAX JA 10-LEAD (3mm 3mm) PLASTIC DFN EXPOSED PAD (PIN 9) IS V , IT IS RECOMMENDED TO SOLDER TO PCB T = 150C, = 43C/W (NOTE 5) JMAX JA EXPOSED PAD (PIN 11) IS V , IT IS RECOMMENDED TO SOLDER TO PCB 626810f 2 For more information www.linear.com/LTC6268-10