Dual, 65Msps, 12-Bit, IF/Baseband ADC

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The MAX12527 is a dual 3.3V, 12-bit analog-to-digital converter (ADC) featuring fully differential wideband track-and-hold (T/H) inputs, driving internal quantizers. The MAX12527 is optimized for low power, small size, and high dynamic performance in intermediate frequency (IF) and baseband sampling applications. This dual ADC operates from a single 3.3V supply, consuming only 620mW while delivering a typical 69.8dB signal-tonoise ratio (SNR) performance at a 175MHz input frequency. The T/H input stages accept single-ended or differential inputs up to 400MHz. In addition to low operating power, the MAX12527 features a 166µW powerdown mode to conserve power during idle periods.

A flexible reference structure allows the MAX12527 to use the internal 2.048V bandgap reference or accept an externally applied reference and allows the reference to be shared between the two ADCs. The reference structure allows the full-scale analog input range to be adjusted from ±0.35V to ±1.15V. The MAX12527 provides a common-mode reference to simplify design and reduce external component count in differential analog input circuits.

The MAX12527 supports either a single-ended or differential input clock. User-selectable divide-by-two (DIV2) and divide-by-four (DIV4) modes allow for design flexibility and help eliminate the negative effects of clock jitter. Wide variations in the clock duty cycle are compensated with the ADC's internal duty-cycle equalizer (DCE).

The MAX12527 features two parallel, 12-bit-wide, CMOS-compatible outputs. The digital output format is pin-selectable to be either two's complement or Gray code. A separate power-supply input for the digital outputs accepts a 1.7V to 3.6V voltage for flexible interfacing with various logic levels. The MAX12527 is available in a 10mm x 10mm x 0.8mm, 68-pin thin QFN package with exposed paddle (EP), and is specified for the extended (-40°C to +85°C) temperature range.

For a 14-bit, pin-compatible version of this ADC, refer to the MAX12557 data sheet.

See a parametric table of the complete family of pin-compatible, 12-/14-bit high-speed ADCs.

MAX12527: Functional Diagram MAX12527: Functional Diagram Enlarge+

Key Features

  • Direct IF Sampling Up to 400MHz
  • Excellent Dynamic Performance
    • 70.4dB/69.8dB SNR at fIN = 70MHz/175MHz
    • 84.4dBc/80.2dBc SFDR at fIN = 70MHz/175MHz
  • 3.3V Low Power Operation
    • 647mW (Differential Clock Mode)
    • 620mW (Single-Ended Clock Mode)
  • Fully Differential or Single-Ended Analog Input
  • Adjustable Differential Analog Input Voltage
  • 750MHz Input Bandwidth
  • Adjustable, Internal or External, Shared Reference
  • Differential or Single-Ended Clock
  • Accepts 25% to 75% Clock Duty Cycle
  • User-Selectable DIV2 and DIV4 Clock Modes
  • Power-Down Mode
  • CMOS Outputs in Two's Complement or Gray Code
  • Out-of-Range and Data-Valid Indicators
  • Small, 68-Pin Thin QFN Package
  • 14-Bit Compatible Version Available (MAX12557)
  • Evaluation Kit Available (Order MAX12557EVKIT)


  • Digital Set-Top Boxes
  • I/Q Receivers
  • IF and Baseband Communication Receivers: Cellular, LMDS, Point-to-Point Microwave, MMDS, HFC, WLAN
  • Low-Power Data Acquisition
  • Portable Instrumentation
  • Ultrasound and Medical Imaging

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

Part Number# Input ChannelsResolution
Sample Rate
AC Specs
Full Pwr. BW
Data Bus InterfacePackage/PinsBudgetary
(max)(@ fIN)(min)(min)(typ)(See Notes)
MAX12527 2126517580.269.369.8-µP/12
$23.95 @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.

MAX12527EVKIT: Evaluation Kit for the MAX12527, MAX12528, MAX12529, MAX12557, MAX12558, and MAX12559
MAX12528EVKIT: Evaluation Kit for the MAX12527, MAX12528, MAX12529, MAX12557, MAX12558, and MAX12559
MAX12529EVKIT: Evaluation Kit for the MAX12527, MAX12528, MAX12529, MAX12557, MAX12558, and MAX12559
MAX12557EVKIT: Evaluation Kit for the MAX12527, MAX12528, MAX12529, MAX12557, MAX12558, and MAX12559
MAX12558EVKIT: Evaluation Kit for the MAX12527, MAX12528, MAX12529, MAX12557, MAX12558, and MAX12559
MAX12559EVKIT: Evaluation Kit for the MAX12527, MAX12528, MAX12529, MAX12557, MAX12558, and MAX12559
Product Reliability Reports: MAX12527.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.

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