آر اف (فرکانس رادیویی) و بی‌سیم سایر آی سی‌ و ماژول‌های آر اف

Product Attributes

Introduction

The MAX2395 fully monolithic quasi-direct modulator IC is designed for use in WCDMA/UMTS transmitters. The quasi-direct modulation architecture reduces system cost, component count, and board space compared to transmitters using an IF SAW filter with IF VCO and IF synthesizer blocks. The MAX2395 includes I/Q baseband filters, an IF I/Q modulator with VGA, a fully monolithic VCO with PLL, an upconverter mixer, an RF VGA, and a power amplifier (PA) driver. The use of the quasi-direct modulator scheme ensures 5% (typ) EVM and a 30dB (min) carrier suppression. The RF VGA and IF VGA provide a nominal 90dB of output power control. No external local oscillators are required, enabling efficient implementation of variable duplex offset systems. The PLL is programmed by loading data on the SPI/MICROWIRE-compatible 3-wire serial bus. The IC operates from a single +2.7V to +3.3V supply. The devices are available in space-saving 28-pin QFN and thin QFN exposed-pad packages (5mm×5mm).

Features

• 5% EVM for Pout = +6dBm
• 1920MHz to 1980MHz Operation
• +2.7V to +3.3V Single-Supply Operation
• +6dBm Output Power at 72mA
• 81dB Minimum Automatic Gain-Control (AGC) Range
• Automatic ICC Throttle Back for Optimal Power Consumption
• No IF SAW Filter Necessary
• On-Chip RF PLL, with Fully Monolithic VCO
• Ultra-Low External Component Count

Applications

• WCDMA Phones
• UMTS/EDGE Phones
• W-TDD Phones