MAX2022
High-Dynamic-Range, Direct Up/Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator
Highest Linearity, Lowest Noise 2GHz ZIF Modulator Enables Four-Carrier WCDMA Tx
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Overview
Features and Benefits
- 1500MHz to 3000MHz RF Frequency Range
- 1500MHz to 3000MHz LO 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: (2140MHz):
- Meets Four-Carrier WCDMA 65dBc ACLR
- 23.3dBm Typical OIP3
- 51.5dBm Typical OIP2
- 45.7dBc Typical Sideband Suppression
- -40dBm Typical LO Leakage
- -173.2dBm/Hz Typical Output Noise, Eliminating the Need for an RF Output Filter
- Broadband Baseband Input
- DC-Coupled Input Provides for Direct Launch DAC Interface, Eliminating the Need for Costly I/Q Buffer Amplifiers
- Demodulator Operation (1890MHz):
- 39dBm Typical IIP3
- 58dBm Typical IIP2
- 9.2dB Typical Conversion Loss
- 9.4dB Typical NF
Product Details
The MAX2022 low-noise, high-linearity, direct conversion quadrature modulator/demodulator is designed for single and multicarrier 1500MHz to 3000MHz UMTS/WCDMA, LTE/TD-LTE, cdma2000®, and DCS/PCS 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 MAX2022 also yields a high level of component integration. This device includes two matched passive mixers for modulating or demodulating in-phase and quadrature signals, three 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 MAX2022 operates from a single +5V supply. It is available in a compact 36-pin TQFN package (6mm x 6mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.
Applications
- Digital and Spread-Spectrum Communication Systems
- Fixed Broadband Wireless Access
- Microwave Links
- Military Systems
- PHS/PAS Base Stations
- Predistortion Transmitters
- Private Mobile Radios (PMRs)
- Single and Multicarrier cdmaOne™ and cdma2000® Base Stations
- Single and Multicarrier DCS 1800/PCS 1900 EDGE Base Stations
- Single and Multicarrier WCDMA/UMTS, and LTE/TDLTE Base Stations
- Wireless Local Loop (WLL)
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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