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MAX1420：12-Bit, 60Msps, +3.3V, Low-Power ADC with Internal Reference

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

MAX1420: Functional Diagram Applications/Uses CCD Pixel Processing IF and Baseband Digitization IR Focal Plane Arrays Medical Ultrasound Imaging Radar

DataSheet

Parametrics

Design kits & evaluation modules

• MAX1420EVKIT

Quality and Environmental Data

• MAX1420.pdf

Ordering Information