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

Product Details

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.

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
Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) 12
# Input Channels 1
Sample Rate (Msps) (max) 60
Data Bus Interface µP/12
AC Specs (MHz) (@ fIN) 15
SFDR (dBc) (min) 72
ENOB (bits) (min) 10.2
SINAD (dB) 63
SNR (dB) 66
THD (dB) -69
DNL (±LSB) 1
INL (±LSB) 2
Package/Pins LQFP/48
Budgetary
Price (See Notes)
$19.87 @1k
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Simplified Block Diagram

MAX1420: Functional Diagram MAX1420: Functional Diagram Zoom icon

Technical Docs

Design & Development

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Description

The MAX1420 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains all the components necessary to evaluate the performance of the MAX1420, MAX1421, or MAX1422, 12-bit, +3.3V, analog-to-digital converters (ADCs). The MAX1420/MAX1421/MAX1422 ADCs accept 2Vp-p differential analog inputs. The offset binary digital output produced by the ADC can be easily sampled with a user-provided high-speed logic analyzer or data-acquisition system. The EV kit comes with the 60Msps part (MAX1420) installed. Order a free sample of the MAX1421CCM or MAX1422CCM to evaluate the 40Msps or 20Msps parts.

View Details

Features

  • Up to 60Msps Sampling Rate
  • Low Voltage, Low Power Operation
  • Clock-Shaping Circuitry
  • Easy Data Capture Configuration
  • Fully Assembled and Tested

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Parameters

Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) 12
# Input Channels 1
Sample Rate (Msps) (max) 60
Data Bus Interface µP/12
AC Specs (MHz) (@ fIN) 15
SFDR (dBc) (min) 72
ENOB (bits) (min) 10.2
SINAD (dB) 63
SNR (dB) 66
THD (dB) -69
DNL (±LSB) 1
INL (±LSB) 2
Package/Pins LQFP/48
Budgetary
Price (See Notes)
$19.87 @1k

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

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.

Simplified Block Diagram

MAX1420: Functional Diagram MAX1420: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal