Analog Devices MAX2023 Product Info

• 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 P_OUT = +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

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.

Applications

• 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