LTC6605CDJC-7#PBF Analog Devices

LTC6605-7 Dual Matched 7MHz Filter with Low Noise, Low Distortion Differential Ampli er FEATURES DESCRIPTION n Two Matched 7MHz 2nd Order Lowpass Filters with The LTC 6605-7 contains two independent, fully differen- Differential Ampli ers tial ampli ers con gured as matched 2nd order lowpass Gain Match: 0.35dB Max, Passband lters. The f of the lters is adjustable in the range of 3dB Phase Match: 1.2 Max, Passband 6.5MHz to 10MHz. Single-Ended or Differential Inputs The internal op amps are fully differential, feature very n < 90dBc Distortion in Passband low noise and distortion, and are compatible with 16-bit n 2.1nV/Hz Op Amp Noise Density dynamic range systems. The inputs can accept single- n Pin-Selectable Gain (0dB/12dB/14dB) ended or differential signals. An input pin is provided n Pin-Selectable Power Consumption (0.35mA/ for each ampli er to set the common mode level of the 16.2mA/33.1mA) differential outputs. n Rail-to-Rail Output Swing Internal laser-trimmed resistors and capacitors determine Adjustable Output Common Mode Voltage Control a precise, very well matched (in gain and phase) 7MHz Buffered, Low Impedance Outputs n 2nd order lter response. A single optional external re- 2.7V to 5.25V Supply Voltage n sistor per channel can tailor the frequency response for Small 22-Pin 6mm 3mm 0.75mm DFN Package each ampli er. Three-state BIAS pins determine each ampli ers power APPLICATIONS consumption, allowing a choice between shutdown, me- n WCDMA ADC Driver/Filter dium power or full power. n Antialiasing Filter The LTC6605-7 is available in a compact 6mm 3mm n Single-Ended to Differential Conversion 22-pin leadless DFN package and operates over a 40C n DAC Smoothing Filter to 85C temperature range. n Zero-IF Direct Conversion Receivers , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Dual, Matched 6.5MHz Lowpass Filter Channel to Channel Phase Matching 120 292 TYPICAL UNITS + 1 22 T = 25C A 2 + 21 3V f = 7MHz 100 IN 0.1F V V 3V 3 20 OUTA INA 0.1F + 80 4 19 5 18 60 LTC6605-7 6 17 + 7 16 40 8 15 3V + 0.1F 20 V 3V V 9 14 OUTB INB 0.1F + 10 13 0 1.2 0.8 0.4 0 0.4 0.8 1.2 11 12 PHASE MATCH (DEG) 66057 TA01 66057 TA01b 66057f 1 NUMBER OF UNITSLTC6605-7 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) + TOP VIEW Total Supply Voltage (V to V ) ................................5.5V Input Current (Note 2) ..........................................10mA +IN4 A 1 22 OUT A + Output Short-Circuit Duration (Note 3) ............ Inde nite +IN1 A 2 21 V A Operating Temperature Range (Note 4).... 40C to 85C BIAS A 3 20 V Speci ed Temperature Range (Note 5) .... 40C to 85C IN1 A 4 19 V OCMA Junction Temperature ........................................... 150C IN4 A 5 18 +OUT A Storage Temperature Range ................... 65C to 150C 23 V 6 17 V +IN4 B 7 16 OUT B + +IN1 B 8 15 V B BIAS B 9 14 V IN1 B 10 13 V OCMB IN4 B 11 12 +OUT B DJC PACKAGE 22-LEAD (6mm 3mm) PLASTIC DFN T = 150C, = 46.5C/W JMAX JA EXPOSED PAD (PIN 23) IS V , MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC6605CDJC-7 PBF LTC6605CDJC-7 TRPBF 66057 22-Lead (6mm 3mm) Plastic DFN 0C to 70C LTC6605IDJC-7 PBF LTC6605IDJC-7 TRPBF 66057 22-Lead (6mm 3mm) Plastic DFN 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. *The temperature grade is identi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based nish parts. For more information on lead free part marking, go to: