LT5511 High Signal Level Upconverting Mixer FEATURES DESCRIPTIO n Wide RF Output Frequency Range to 3000MHz The LT 5511 mixer is designed to meet the high linearity n Broadband RF and IF Operation requirements of cable TV infrastructure downstream trans- n +17dBm Typical Input IP3 (at 950MHz) mitters and wireless infrastructure transmit systems. The n +6dBm IF Input for 1dB RF Output Compression IC includes a differential LO buffer amplifier driving a n Integrated LO Buffer: 10dBm Drive Level double-balanced mixer. The LO, RF and IF ports can be n Single-Ended or Differential LO Input easily matched to a broad range of frequencies for differ- n Double-Balanced Mixer ent applications. The high performance capability of the n Enable Function LO buffer allows the use of a single-ended source, thus n Single 4.0V 5.25V Supply Voltage Range eliminating the need for an LO balun. n 16-Pin TSSOP Exposed Pad Package The LT5511 mixer delivers +17dBm typical input 3rd order intercept point at 950MHz, and +15.5dBm IIP3 at U 1900MHz, with IF input signal levels of 5dBm. The input APPLICATIO S 1dB compression point is typically +6dBm. n CATV Downlink Infrastructure , LTC and LT are registered trademarks of Linear Technology Corporation. n Wireless Infrastructure n High Linearity Mixer Applications TYPICAL APPLICATIO V CC ENABLE 5V RF Output Power LT5511 and 3rd Order Intermodulation V BIAS V LO EN CC CC vs Input Power (Two Input Tones) BIAS 10 950MHz 44MHz + + IF RF 0 TO P OUT DOWNMIXER 10 MOD RF 20 IF 30 40 IM3 50 60 70 GND P = 10dBm LO 80 f = 950MHz RF1 + f = 949MHz RF2 LO 90 LO T = 25C A 5511 F01a 100 LO INPUT 20 15 10 5 0 5 994MHz IF INPUT POWER (dBm/TONE) 10dBm 5511 F01b Figure 1. High Signal Level Upmixer for CATV Downlink Infrastructure. 5511i 1 P , IM3 (dBm/TONE) OUT U ULT5511 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) TOP VIEW ORDER PART Supply Voltage ....................................................... 5.5V + 1 LO 16 LO NUMBER Enable Voltage ................................ 0.3V to V + 0.3V CC NC 2 15 V LO CC LO Input Power (Differential) .............................. 10dBm LT5511EFE GND 3 14 GND IF Input Power (Differential) ............................... 10dBm + + IF 4 13 RF + IF , IF DC Currents .............................................. 25mA IF 5 12 RF Operating Temperature Range .................40 C to 85 C GND 6 11 GND V BIAS 7 10 EN Storage Temperature Range ..................65 C to 150 C CC FE PART MARKING GND 8 9 NC Lead Temperature (Soldering, 10sec)................... 300 C FE PACKAGE 5511EFE 16-LEAD PLASTIC TSSOP T = 150 C, q = 38 C/W JMAX JA EXPOSED PAD IS GROUND (MUST BE SOLDERED TO PRINTED CIRCUIT BOARD) Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS V = 5V , EN = High, T = 25 C CC DC A IF Input Frequency Range (Note 6) 1 to 300 MHz LO Input Frequency Range (Note 6) 30 to 2700 MHz RF Output Frequency Range (Note 6) 10 to 3000 MHz 950MHz Application: (Test Circuit Shown in Figure 2) V = 5V , EN = High, T = 25 C, IF Input = 50MHz at 5dBm, LO Input = 1GHz at 10dBm, CC DC A RF Output Measured at 950MHz, unless otherwise noted. (Notes 2, 3) IF Input Return Loss With External Matching, Z = 50W 14 dB O LO Input Power 15 to 5 dBm LO Input Return Loss With External Matching, Z = 50W 14 dB O RF Output Return Loss With External Matching, Z = 50W 17 dB O Conversion Gain 0dB LO to RF Leakage 46 dBm Input 1dB Compression 5.9 dBm Input 3rd Order Intercept Two-Tone, 5dBm/Tone, D f = 1MHz 17 dBm Input 2nd Order Intercept Single-Tone, 5dBm 52 dBm SSB Noise Figure 15 dB 5511f 2 U WWW