LT6411 650MHz Differential ADC Driver/Dual Selectable Gain Ampli er FEATURES DESCRIPTION 650MHz 3dB Small-Signal Bandwidth The LT 6411 is a dual ampli er with individually selectable 600MHz 3dB Large-Signal Bandwidth gains of +1, +2 and 1. The ampli ers have excellent dis- High Slew Rate: 3300V/s tortion performance for driving ADCs as well as excellent Easily Con gured for Single-Ended to Differential bandwidth and slew rate for video, data transmission and Conversion other high speed applications. Single-ended to differential 200MHz 0.1dB Bandwidth conversion with a system gain of 2 is particularly straight- User Selectable Gain of +1, +2 and 1 forward by con guring one ampli er with a gain of +1 No External Resistors Required and the other ampli er with a gain of 1. The LT6411 can 46.5dBm Equivalent OIP3 at 30MHz When Driving an be used on split supplies as large as 6V and on a single ADC supply as low as 4.5V. IM3 with 2V Composite, Differential Output: P-P Each ampli er draws only 8mA of quiescent current when 87dBc at 30MHz, 83dBc at 70MHz enabled. When disabled, the output pins become high 77dB SFDR at 30MHz, 2V Differential Output P-P impedance and each ampli er draws less than 350A. 6ns 0.1% Settling Time for 2V Step The LT6411 is manufactured on Linear Technologys Low Supply Current: 8mA per Ampi er proprietary, low voltage, complimentary, bipolar process Differential Gain of 0.02%, Differential Phase of 0.01 and is available in the ultra-compact, 3mm 3mm, 16pin 50dB Channel Separation at 100MHz QFN package. Wide Supply Range: 2.25V (4.5V) to 6.3V (12.6V) 3mm 3mm 16-Pin QFN Package , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. APPLICATIONS Differential ADC Driver Single-Ended to Differential Conversion Differential Video Line Driver TYPICAL APPLICATION 30MHz 2-Tone 32768 Point FFT, LT6411 Differential ADC Driver Driving an LTC 2249 14-Bit ADC 5V 0 32768 POINT FFT 10 TONE 1 AT 29.5MHz, 7dBFS V 20 CC TONE 2 AT 30.5MHz, 7dBFS 30 IM3 = 87dBc LT6411 40 24 + 50 1.9V 60 DC 70 370 370 A IN 80 LTC2249 30MHz 14-BIT ADC 370 370 90 INPUT 80Msps + 100 A IN 110 24 1.9V DC 120 6411 TA01a 130 + 140 V 0 5 10 15 20 25 30 35 40 EE DGND FREQUENCY (MHz) 6411 TA01b EN 6411f 1 AMPLITUDE (dBFS)LT6411 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1) Total Supply Voltage (V to V ) ..........................12.6V TOP VIEW CC EE Input Current (Note 2) ..........................................10mA Output Current (Continuous) ...............................70mA 16 15 14 13 V 1 12 DGND EN to DGND Voltage (Note 2) ..................................5.5V EE 2 11 V EN EE Output Short-Circuit Duration (Note 3) ............ Inde nite 17 3 10 V V EE CC Operating Temperature Range (Note 4) ... 40C to 85C NC 4 9 VCC Speci ed Temperature Range (Note 5) .... 40C to 85C 56 7 8 Storage Temperature Range ................... 65C to 125C Junction Temperature ........................................... 125C UD PACKAGE 16-LEAD (3mm 3mm) PLASTIC QFN T = 125C, = 68C/W, = 4.2C/W JMAX JA JC EXPOSED PAD (PIN 17) IS V , MUST BE SOLDERED TO PCB EE ORDER PART NUMBER UD PART MARKING* LT6411CUD LCGP LT6411IUD LCGP Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: