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

Please check latest availability status for a specific part variant.


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.

MAX2023: Typical Application Circuit MAX2023: Typical Application Circuit Enlarge+

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


  • 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

See parametric specs for I/Q Demodulators (3)

Part NumberBand/ Freq.
(mm x mm)
MAX2023 1500 to 25006.0 x 6.0

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

See parametric specs for I/Q Modulators (3)

Part NumberFreq.
Input IP3
LO Leakage at RF
Noise Figure
MAX2023 150025003823.5-549.65295

MAX2023EVKIT: MAX2023 Evaluation Kit
Product Reliability Reports: MAX2023.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
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Type ID Title
Evaluation Board5411MAX2023EVKIT MAX2023 Evaluation Kit