Features and Benefits

  • 650MHz to 1200MHz 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 4-Carrier WCDMA 65dBc ACLR
  • +21dBm Typical OIP3
  • +58dBm Typical OIP2
  • +16.7dBm Typical OP1dB
  • -32dBm Typical LO Leakage
  • 43.5dBc Typical Sideband Suppression
  • -174dBm/Hz Output Noise Density
  • DC to 550MHz Baseband Input Allows a Direct Launch DAC Interface, Eliminating the Need for Costly I/Q Buffer Amplifiers
  • DC-Coupled Input Allows Ability for Customer Offset Voltage Control
Demodulator Operation:
  • +35.2dBm Typical IIP3
  • +76dBm Typical IIP2
  • > 30dBm IP1dB
  • 9.2dB Typical Conversion Loss
  • 9.3dB Typical NF
  • 0.06dB Typical I/Q Gain Imbalance
  • 0.15° I/Q Typical Phase Imbalance

Product Details

The MAX2021 low-noise, high-linearity, direct upconversion/downconversion quadrature modulator/demodulator is designed for RFID handheld and portal readers, as well as single and multicarrier 650MHz to 1200MHz GSM/EDGE, cdma2000®, WCDMA, and iDEN® 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 MAX2021 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 MAX2021 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.


  • Cable Modem Termination Systems (CMTS)
  • Digital and Spread-Spectrum Communication Systems
  • Fixed Broadband Wireless Access
  • GSM 850/GSM 900 EDGE Base Stations
  • Microwave Links
  • Military Systems
  • Predistortion Transmitters and Receivers
  • RFID Handheld and Portal Readers
  • Single and Multicarrier cdmaOne™ and cdma2000® Base Stations
  • Single and Multicarrier WCDMA 850 Base Stations
  • Video-on-Demand (VOD) and DOCSIS® Compliant Edge QAM Modulation
  • WiMAX Transmitters and Receivers

Product Lifecycle icon-recommended Production

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.

Product Recommendations

MAX2021 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.



Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help