MAX1422
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MAX1422

12-Bit, 20Msps, +3.3V, Low-Power ADC with Internal Reference

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Models 2
1ku List Price Starting From $8.71
Features
  • Single 3.3V Power Supply
  • 67dB SNR at fIN = 5MHz
  • Internal 2.048V Precision Bandgap Reference
  • Differential Wideband Input T/H Amplifier
  • Power-Down Modes
    • 130mW (Reference Shutdown Mode)
    • 10µW (Shutdown Mode)
  • Space-Saving 48-Pin TQFP Package
Additional Details
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The MAX1422 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 MAX1422 is optimized for lowpower, high dynamic performance applications in imaging and digital communications. The converter operates from a single 3.3V supply, consuming only 137mW while delivering a 67dB (typ) signal-to-noise ratio (SNR) at a 5MHz input frequency and a 20Msps sampling frequency. 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 ADCs full-scale range. A flexible reference structure accommodates an internally or externally applied buffered or unbuffered reference for applications requiring increased accuracy or a different input voltage range.

In addition to low operating power, the MAX1422 features two power-down modes, a reference power-down, and a shutdown mode. In reference power-down, the internal bandgap reference is deactivated, resulting in a 2mA (typ) supply current reduction. For idle periods, a full shutdown mode is available to maximize power savings.

The MAX1422 provides parallel, offset binary, CMOS-compatible three-state outputs.

The MAX1422 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 extended industrial (-40°C to +85°C) temperature ranges.

Pin-compatible higher-speed versions of the MAX1422 are also available. Please refer to the MAX1421 data sheet for 40Msps and the MAX1420 data sheet for 60Msps.

Applications

  • CCD Pixel Processing
  • Data Acquisition
  • IF and Baseband Digitization
  • Medical Ultrasound Imaging
  • Radar
Part Models 2
1ku List Price Starting From $8.71

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Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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MAX1422ECM+TD
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Product Lifecycle

PCN

Dec 3, 2021

- 2218E

ASSEMBLY

MAX1422ECM+D

PRODUCTION

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Part Models

Product Lifecycle

PCN

Dec 3, 2021

- 2218E

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ASSEMBLY

MAX1422ECM+D

PRODUCTION

Evaluation Kits 1

MAX1420EVKIT

Evaluation Kit for the MAX1420, MAX1421, and MAX1422

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MAX1420EVKIT

Evaluation Kit for the MAX1420, MAX1421, and MAX1422

Evaluation Kit for the MAX1420, MAX1421, and MAX1422

Features and Benefits

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

Product Detail

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.

Applications

  • CCD Pixel Processing
  • IF and Baseband Digitization
  • IR Focal Plane Arrays
  • Medical Ultrasound Imaging
  • Radar

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