LO-RF LEAKAGE (dBm) LT5527 400MHz to 3.7GHz 5V High Signal Level Downconverting Mixer FEATURES DESCRIPTION n 50 Single-Ended RF and LO Ports The LT 5527 active mixer is optimized for high linearity, n Wide RF Frequency Range: 400MHz to 3.7GHz* wide dynamic range downconverter applications. The n High Input IP3: 24.5dBm at 900MHz IC includes a high speed differential LO buffer ampli er 23.5dBm at 1900MHz driving a double-balanced mixer. Broadband, integrated n Conversion Gain: 3.2dB at 900MHz transformers on the RF and LO inputs provide single-ended 2.3dB at 1900MHz 50 interfaces. The differential IF output allows convenient n Integrated LO Buffer: Low LO Drive Level interfacing to differential IF lters and ampli ers, or is n High LO-RF and LO-IF Isolation easily matched to drive 50 single-ended, with or without n Low Noise Figure: 11.6dB at 900MHz an external transformer. 12.5dB at 1900MHz The RF input is internally matched to 50 from 1.7GHz n Very Few External Components to 3GHz, and the LO input is internally matched to 50 n Enable Function from 1.2GHz to 5GHz. The frequency range of both ports n 4.5V to 5.25V Supply Voltage Range is easily extended with simple external matching. The IF n 16-Lead (4mm 4mm) QFN Package output is partially matched and usable for IF frequencies up to 600MHz. APPLICATIONS The LT5527s high level of integration minimizes the total n Cellular, WCDMA, TD-SCDMA and UMTS solution cost, board space and system-level variation. Infrastructure L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n GSM900/GSM1800/GSM1900 Infrastructure *Operation over a wider frequency range is possible with reduced performance. Consult factory for information and assistance. n 900MHz/2.4GHz/3.5GHz WLAN n MMDS, WiMAX n High Linearity Downmixer Applications TYPICAL APPLICATION High Signal Level Downmixer for Multi-Carrier Wireless Infrastructure 1.9GHz Conversion Gain, IIP3, SSB NF and LO-RF Leakage vs LO Power LO INPUT 3dBm (TYP) 24 20 IIP3 22 25 LT5527 20 30 IF = 240MHz 18 35 LOW SIDE LO T = 25C A 16 40 4.7pF V = 5V CC 14 45 + 100nH IF 12 50 SSB NF 1nF 10 55 IF 8 60 220nH OUTPUT LO-RF 4.7pF RF 240MHz RF 6 65 INPUT 4 70 G C IF BIAS 2 75 100nH 9 7 5 3 1 1 3 V V GND EN CC2 CC1 LO POWER (dBm) 5527 TA01b 5V 1nF 1F 5527 TA01a 5527fa 1 G , SSB NF (dB), IIP3 (dBm) CLT5527 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW Supply Voltage (V , V , IF+, IF) .......................5.5V CC1 CC2 Enable Voltage ................................ 0.3V to V + 0.3V 16 15 14 13 CC NC 1 12 GND LO Input Power (380MHz to 4GHz) ......................10dBm + NC 2 11 IF LO Input DC Voltage ..............................1V to V + 1V CC 17 RF IF 3 10 Continuous RF Input Power NC 4 9 GND (400MHz to 4GHz) ...............................................12dBm 5 6 7 8 RF Input Power (400MHz to 4GHz) ......................15dBm RF Input DC Voltage ...............................................0.1V UF PACKAGE Operating Temperature Range ................40C to 85C 16-LEAD (4mm s 4mm) PLASTIC QFN T = 125C, = 37C/W JMAX JA Storage Temperature Range ...................65C to 125C EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB Junction Temperature (T ) ................................... 125C J ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT5527EUF PBF LT5527EUF TRPBF 5527 40C to 85C 16-Lead (4mm 4mm) Plastic QFN Consult LTC Marketing for parts speci ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based nish parts. For more information on lead free part marking, go to: