LT6600-10 Very Low Noise, Differential Ampli er and 10MHz Lowpass Filter FEATURES DESCRIPTION n Programmable Differential Gain via Two External The LT 6600-10 combines a fully differential ampli er with a Resistors 4th order 10MHz lowpass lter approximating a Chebyshev n Adjustable Output Common Mode Voltage frequency response. Most differential ampli ers require n Operates and Speci ed with 3V, 5V, 5V Supplies many precision external components to tailor gain and n 0.5dB Ripple 4th Order Lowpass Filter with 10MHz bandwidth. In contrast, with the LT6600-10, two external Cutoff resistors program differential gain, and the lters 10MHz n 82dB S/N with 3V Supply and 2V Output cutoff frequency and passband ripple are internally set. P-P n Low Distortion, 2V , 800 Load The LT6600-10 also provides the necessary level shifting P-P 1MHz: 88dBc 2nd, 97dBc 3rd to set its output common mode voltage to accommodate 5MHz: 74dBc 2nd, 77dBc 3rd the reference voltage requirements of A/Ds. n Fully Differential Inputs and Outputs Using a proprietary internal architecture, the LT6600-10 n Compatible with Popular Differential Ampli er Pinouts integrates an antialiasing lter and a differential ampli- n SO-8 and DFN-12 Packages er/driver without compromising distortion or low noise performance. At unity gain the measured in band signal- APPLICATIONS to-noise ratio is an impressive 82dB. At higher gains the n High Speed ADC Antialiasing and DAC Smoothing in input referred noise decreases so the part can process Networking or Cellular Base Station Applications smaller input differential signals without signi cantly n High Speed Test and Measurement Equipment degrading the output signal-to-noise ratio. n Medical Imaging The LT6600-10 also features low voltage operation. The n Drop-In Replacement for Differential Ampli ers differential design provides outstanding performance for L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear a 2V signal level while the part operates with a single Technology Corporation. All other trademarks are the property of their respective owners. P-P 3V supply. For similar devices with other cutoff frequencies, refer to the LT6600-20, LT6600-15, LT6600-5 and LT6600-2.5. TYPICAL APPLICATION (S8 pin numbers shown) An 8192 Point FFT Spectrum 0 INPUT IS A 4.7MHz SINEWAVE 10 LT6600-10 2V P-P f = 66MHz 5V SAMPLE 20 0.1F 5V 30 R IN 40 3 402 + 1 49.9 V 50 4 + 7 + 60 V MID A 18pF LTC1748 D 2 IN OUT 70 49.9 V 0.01F OCM 8 80 5 V + IN V CM V R 90 IN 6 402 100 1F 110 GAIN = 402/R IN 0 4 8 12 16 20 24 28 32 6600 TA01a FREQUENCY (MHz) 6600 TA01b 66001fe 1 FREQUENCY (dB)LT6600-10 ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage .................................................11V Junction Temperature ........................................... 150C Input Current (Note 8) ..........................................10mA Storage Temperature Range ................... 65C to 150C Operating Temperature Range (Note 6).... 40C to 85C Lead Temperature (Soldering, 10 sec) .................. 300C Speci ed Temperature Range (Note 7) .... 40C to 85C PIN CONFIGURATION TOP VIEW TOP VIEW + 1 IN IN 12 + NC IN 1 8 IN NC 2 11 3 V 10 V OCM MID V 2 V 7 OCM MID 13 + V 4 9 V + V 3 6 V NC 5 8 V + OUT 4 5 OUT + OUT 6 7 OUT S8 PACKAGE DF PACKAGE 8-LEAD PLASTIC SO 12-LEAD (4mm s 4mm) PLASTIC DFN T = 150C, = 100C/W T = 150C, = 43C/W, = 4C/W JMAX JA JMAX JA JC EXPOSED PAD (PIN 13) IS V , MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT6600CS8-10 PBF LT6600CS8-10 TRPBF 660010 8-Lead Plastic SO 0C to 70C LT6600IS8-10 PBF LT6600IS8-10 TRPBF 600I10 8-Lead Plastic SO 40C to 85C LT6600CDF-10 PBF LT6600CDF-10 TRPBF 60010 12-Lead (4mm 4mm) Plastic DFN 0C to 70C LT6600IDF-10 PBF LT6600IDF-10 TRPBF 60010 12-Lead (4mm 4mm) Plastic DFN 40C to 85C LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT6600CS8-10 LT6600CS8 TR 660010 8-Lead Plastic SO 0C to 70C LT6600IS8-10 LT6600IS8-10 TR 600I10 8-Lead Plastic SO 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based nish parts. The temperature grade is identi ed by a label on the shipping container for the DFN Package. For more information on lead free part marking, go to: