LT6600-5 Very Low Noise, Differential Ampli er and 5MHz Lowpass Filter FEATURES DESCRIPTION n Programmable Differential Gain via Two External The LT 6600-5 combines a fully differential ampli er with a Resistors 4th order 5MHz 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 5MHz bandwidth. In contrast, with the LT6600-5, two external resistors program differential gain, and the lters 5MHz Cutoff n cutoff frequency and passband ripple are internally set. 82dB S/N with 3V Supply and 2V Output P-P n The LT6600-5 also provides the necessary level shifting Low Distortion, 2V , 800 Load P-P to set its output common mode voltage to accommodate 1MHz: 93dBc 2nd, 96dBc 3rd n the reference voltage requirements of A/Ds. Fully Differential Inputs and Outputs n Compatible with Popular Differential Ampli er Using a proprietary internal architecture, the LT6600-5 Pinouts integrates an anti-aliasing lter and a differential ampli- n Available in an SO-8 Package er/driver without compromising distortion or low noise performance. At unity gain the measured in band sig- nal-to-noise ratio is an impressive 82dB. At higher gains APPLICATIONS the input referred noise decreases so the part can process n High Speed ADC Anti-Aliasing and DAC Smoothing in smaller input differential signals without signi cantly Networking or Cellular Base Station Applications degrading the output signal-to-noise ratio. n High Speed Test and Measurement Equipment The LT6600-5 also features low voltage operation. The n Medical Imaging differential design provides outstanding performance for n Drop-in Replacement for Differential Ampli ers a 2V signal level while the part operates with a single P-P L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. 3V supply. All other trademarks are the property of their respective owners. For similar devices with other cutoff frequencies, refer to the LT6600-20, LT6600-10 and LT6600-2.5. TYPICAL APPLICATION Dual, Matched, 5MHz Lowpass Filter 5MHz Phase Distribution 3V (50 Units) 0.1F 30 R IN 3 1 4 + 0.01F 25 7 I IN LT6600-5 Q 2 OUT 20 8 + 5 R 6 IN 806 15 GAIN = V R IN OCM 3V 0.1F (1V-1.5V) 10 R 3 IN 1 4 + 5 0.01F 7 Q IN LT6600-5 I OUT 2 0 8 135 134.5134133.5133132.5132 131.5 + 5 5MHz PHASE (DEG) R 6 IN 66005 TA01 66005fb 1 PERCENTAGE OF UNITS (%)LT6600-5 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW Total Supply Voltage .................................................11V + Input Current (Note 8) ..........................................10mA IN 1 8 IN Operating Temperature Range (Note 6).... 40C to 85C V 2 7 V OCM MID + Speci ed Temperature Range (Note 7) .... 40C to 85C V V 3 6 + Junction Temperature ........................................... 150C OUT OUT 4 5 Storage Temperature Range ...................65C to 150C S8 PACKAGE 8-LEAD PLASTIC SO Lead Temperature (Soldering, 10 sec) .................. 300C T = 150C, = 100C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT6600CS8-5 PBF LT6600CS8-5 TRPBF 66005 8-Lead Plastic SO 40C to 85C LT6600IS8-5 PBF LT6600IS8-5 TRPBF 6600I5 8-Lead Plastic SO 40C to 85C LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT6600CS8-5 LT6600CS8-5 TR 66005 8-Lead Plastic SO 40C to 85C LT6600IS8-5 LT6600IS8-5 TR 6600I5 8-Lead Plastic SO 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. For more information on lead free part marking, go to: