12-Bit, 65Msps, IF Sampling ADC

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The MAX1211 is a 3.3V, 12-bit analog-to-digital converter (ADC) featuring a fully differential wideband track-and-hold (T/H) input, driving the internal quantizer. The MAX1211 is optimized for low power, small size, and high dynamic performance in intermediate frequency (IF) sampling applications. This ADC operates from a single 3.0V to 3.6V supply, consuming only 340mW while delivering a typical signal-to-noise ratio (SNR) performance of 66.8dB at a 175MHz input frequency. The T/H-driven input stage accepts single-ended or differential inputs. In addition to low operating power, the MAX1211 features a 0.15mW power-down mode to conserve power during idle periods.

A flexible reference structure allows the MAX1211 to use its internal precision bandgap reference or accept an externally applied reference. A common-mode reference is provided to simplify design and reduce external component count in differential analog input circuits.

The MAX1211 supports both a single-ended and differential input clock drive. Wide variations in the clock duty cycle are compensated with the ADC's internal duty-cycle equalizer.

The MAX1211 features parallel, CMOS-compatible outputs. The digital output format is pin selectable to be either two's complement or Gray code. A data-valid indicator eliminates external components that are normally required for reliable digital interfacing. A separate power input for the digital outputs accepts a voltage from 1.7V to 3.6V for flexible interfacing with various logic levels. The MAX1211 is available in a 6mm x 6mm x 0.8mm, 40- pin thin QFN package with exposed paddle (EP), and is specified for the extended industrial (-40°C to +85°C) temperature range.

See a parametric table of the complete family of pin-compatible, 12-/14-bit high-speed ADCs.
MAX1211: Functional Diagram MAX1211: Functional Diagram Enlarge+

Key Features

  • Direct IF Sampling Up to 400MHz
  • 700MHz Input Bandwidth
  • Excellent Dynamic Performance
    • 66.8dB SNR at fIN = 175MHz
    • 79.7dBc SFDR at fIN = 175MHz
  • 3.3V Low-Power Operation
    • 314mW (Single-Ended Clock Mode)
    • 340mW (Differential Clock Mode)
  • Differential or Single-Ended Clock
  • Accepts 20% to 80% Clock Duty Cycle
  • Fully Differential or Single-Ended Analog Input
  • Adjustable Full-Scale Analog Input Range
  • Common-Mode Reference
  • Power-Down Mode
  • CMOS-Compatible Outputs in Two's Complement or Gray Code
  • Data-Valid Indicator Simplifies Digital Interface
  • Out-of-Range Indicator
  • Miniature, 40-Pin Thin QFN Package with Exposed Paddle
  • Evaluation Kit Available (Order MAX1211EVKIT)


  • Cellular, LMDS, Point-to-Point Microwave, MMDS, HFC, WLAN
  • IF and Baseband Communication Receivers: Cellular, Point-to-Point Microwave, HFC, WLAN
  • Low-Power Data Acquisition
  • Portable Instrumentation
  • Ultrasound and Medical Imaging

See parametric specs for High-Speed ADCs (> 5Msps) (49)

Part NumberInput ChannelsResolution
Sample Rate
AC Specs
Full Pwr. BW
max@ fINminminSee Notes
MAX1211 1126517579.766.566.8-
$16.63 @1k

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.

MAX1211EVKIT: Evaluation Kit for the MAX1211, MAX1206, MAX1207, MAX1208, MAX1209, and MAX19538
Request Reliability Report for: MAX1211 
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.

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