LTC5569 Datasheet | Linear Technology

Features n High IIP3: 26.8d Bm at 1950MHz n 2d B Conversion Gain n Low Noise Figure: 11.7d B at 1950MHz n 17d B NF Under 5d Bm Blocking n 44d B Channel Isolation n Low Power: 3.3V/600m W Total n Very Small Solution Size n Enable Pins for Each Mixer n Wide IF Frequency Range n LO Input 50Ω Matched in All Modes n - 40°C to 105°C Operation n 16-Lead (4mm × 4mm) QFN package APPLICATIONS n Wireless Infrastructure Diversity Receivers n MIMO Infrastructure Receivers n Remote Radio Units LTC5569 300MHz to 4GHz 3.3V Dual Active Downconverting Mixer DESCRIPTION The LTC®5569 dual active downconverting mixer is optimized for diversity and MIMO receiver applications that require low power and small size. Each mixer includes an independent LO buffer amplifier, active mixer core, and bias circuit with enable pin. The symmetry of the IC assures that a phase and amplitude coherent LO is applied to each mixer. The RF inputs are 50Ω matched from 1.4GHz to 3.3GHz, and easily matched for higher or lower RF frequencies with simple external matching. The LO input is 50Ω matched from 1GHz to 3.5GHz, even when one or both mixers are disabled. The LO input is easily matched for higher or lower frequencies, as low as 350MHz, with simple external matching. The low capacitance differential IF outputs are usable up to 1.6GHz. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Diversity Receiver with 190MHz Bandpass IF Matching 1n F 190MHz 10n F RF MAIN 2.7p F RFA 270n H IFA+ 270n H 1n F IFA- VCCA 3.3V 10n F BIAS ENA ENA 3.9p F LO LO LO RF DIVERSITY 2.7p F RF IFB+ 10n F 270n H IFB- 270n H BIAS ENB VCCB 1n F 190MHz ENB 3.3V 10n F 1n F DUAL IF VGA DUAL ADC 5569...