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MAX2023：High-Dynamic-Range, Direct Up-/Downconversion 1500MHz to 2500MHz Quadrature Mod/Demod

Highest Linearity, Lowest Noise 1.5GHz to 2.3GHz ZIF Modulator/Demodulator Enables Zero-IF Direct-Conversion Architectures for DCS/PCS EDGE BTS Transmitters

The MAX2023 low-noise, high-linearity, direct upconversion/downconversion quadrature modulator/demodulator is designed for single and multicarrier 1500MHz to 2300MHz DCS 1800/PCS 1900 EDGE, cdma2000®, WCDMA, and PHS/PAS base-station applications. Direct conversion architectures are advantageous since they significantly reduce transmitter or receiver cost, part count, and power consumption as compared to traditional IF-based double-conversion systems. In addition to offering excellent linearity and noise performance, the MAX2023 also yields a high level of component integration. This device includes two matched passive mixers for modulating or demodulating in-phase and quadrature signals, two LO mixer amplifier drivers, and an LO quadrature splitter. On-chip baluns are also integrated to allow for single-ended RF and LO connections. As an added feature, the baseband inputs have been matched to allow for direct interfacing to the transmit DAC, thereby eliminating the need for costly I/Q buffer amplifiers. The MAX2023 operates from a single +5V supply. It is available in a compact 36-pin TQFN package (6mm x 6mm) with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Key Features 1500MHz to 2500MHz RF Frequency Range Scalable Power: External Current-Setting Resistors Provide Option for Operating Device in Reduced-Power/Reduced-Performance Mode 36-Pin, 6mm x 6mm TQFN Provides High Isolation in a Small Package Modulator Operation: Meets GSM Spurious Emission of -75dBc at 600kHz Offset at POUT = +6dBm +23.5dBm Typical OIP3 +61dBm Typical OIP2 +16dBm Typical OP1dB -54dBm Typical LO Leakage 48dBc Typical Sideband Suppression -165dBc/Hz Output Noise Density Broadband Baseband Input of 450MHz Allows a Direct Launch DAC Interface, Eliminating the Need for Costly I/Q Buffer Amplifiers DC-Coupled Input Allows Ability for Offset Voltage Control Demodulator Operation: +38dBm Typical IIP3 +59dBm Typical IIP2 +30dBm Typical IP1dB 9.5dB Typical Conversion Loss 9.6dB Typical NF 0.025dB Typical I/Q Gain Imbalance 0.56° I/Q Typical Phase Imbalance

MAX2023: Typical Application Circuit Applications/Uses Cable Modem Termination Systems (CMTS) Digital and Spread-Spectrum Communication Systems Fixed Broadband Wireless Access Microwave Links Military Systems PHS/PAS Base Stations Predistortion Transmitters and Receivers Single and Multicarrier cdmaOne™ and cdma2000® Base Stations Single and Multicarrier WCDMA/LTE/TD-LTE Base Stations Single-Carrier DCS 1800/PCS 1900 EDGE Base Stations Video-on-Demand (VOD) and DOCSIS® Compliant Edge QAM Modulation

DataSheet

Parametrics

Design kits & evaluation modules

• MAX2023EVKIT

Quality and Environmental Data

• MAX2023.pdf

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