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MAX1421 Datasheet 12-Bit / 40Msps / +3.3V / Low-Power ADC

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-1900; Rev 0; 5/01 12-Bit, 40Msps, +3.3V, Low-Power ADC with Internal.

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General Description

The MAX1421 is a +3.3V, 12-bit analog-to-digital converter (ADC), featuring 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 MAX1421 is optimized for low-power, high-dynamic performance applications in imaging and digital communications.

The converter operates from a single +3.3V supply, consuming only 188mW while delivering a typical signal-to-noise ratio (SNR) of 66dB at an input frequency of 15MHz and a sampling frequency of 40Msps.

Key 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 typical 2mA supply current reduction. For idle periods, a full shutdown mode is available to maximize power savings. The MAX1421 provides parallel, offset binary, CMOScompatible three-state outputs. The MAX1421 is available in a 7mm x 7mm, 48-pin TQFP package, and is specified over the commercial (0°C to +70°C) and the extended industrial (-40°C.

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