MAX1420

12-Bit, 60Msps, +3.3V, Low-Power ADC with Internal Reference


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Description

The MAX1420, 3.3V, 12-bit analog-to-digital converter (ADC) features a fully-differential input, pipelined, 12-stage ADC architecture with wideband track-and-hold (T/H) and digital error correction, incorporating a fully-differential signal path. The MAX1420 is optimized for low-power, high dynamic performance applications in imaging and digital communications. The converter operates from a single 3.3V supply, and consumes only 221mW. The fully-differential input stage has a small signal -3dB bandwidth of 400MHz and may be operated with single-ended inputs.

An internal 2.048V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure accommodates an internal reference, or externally applied buffered or unbuffered reference for applications that require increased accuracy and a different input voltage range.

In addition to low operating power, the MAX1420 features two power-down modes: reference power-down and shutdown mode. In reference power-down, the internal bandgap reference is deactivated, which results in a typical 2mA supply current reduction. A full shutdown mode is available to maximize power savings during idle periods.

The MAX1420 provides parallel, offset binary, CMOS-compatible three-state outputs.

The MAX1420 is available in a 7mm x 7mm x 1.4mm, 48-pin TQFP package, and is specified over the commercial (0°C to +70°C) and the extended industrial (-40°C to +85°C) temperature range.

Pin-compatible lower speed versions of the MAX1420 are also available. Please refer to the MAX1421 data sheet for 40Msps and the MAX1422 data sheet for 20Msps.
MAX1420: Functional Diagram MAX1420: Functional Diagram Enlarge+

Key Features

  • 3.3V Single Power Supply
  • 67dB SNR at fIN = 5MHz
  • 66dB SNR at fIN = 15MHz
  • Internal 2.048V Precision Bandgap Reference
  • Differential, Wideband Input T/H Amplifier
  • Power-Down Modes
    • 218mW (Reference Shutdown Mode)
    • 10µW (Shutdown Mode)
  • Space-Saving 48-Pin TQFP Package

Applications/Uses

  • CCD Pixel Processing
  • IF and Baseband Digitization
  • IR Focal Plane Arrays
  • Medical Ultrasound Imaging
  • Radar
Part NumberInput Chan.Resolution
(bits)
Sample Rate
(Msps)
AC Specs
(MHz)
SFDR
(dBc)
ENOB
(bits)
SINAD
(dB)
SNR
(dB)
THD
(dB)
DNL
(±LSB)
INL
(±LSB)
Full Pwr. BW
(MHz)
ICC
(mA)
Data Bus InterfacePackage/PinsBudgetary
Price
max ≥@ fINminminmintypSee Notes
MAX1420 11260157210.26366-691215075µP/12
LQFP/48
$19.87 @1k
See All High-Speed ADCs (> 5Msps) (53)
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.


MAX1420EVKIT: Evaluation Kit for the MAX1420, MAX1421, and MAX1422
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

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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