10-Bit, 105Msps, Single +3.3V, Low-Power ADC with Internal Reference

 

Part Number	Replacement	Explanation

Description

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The MAX1449 3.3V, 10-bit analog-to-digital converter (ADC) features a fully differential input, a pipelined 10-stage ADC architecture with wideband track-and-hold (T/H), and digital error correction incorporating a fully differential signal path. The ADC is optimized for lowpower, high-dynamic performance in imaging and digital communications applications. The converter operates from a single 2.7V to 3.6V supply, consuming only 186mW while delivering a 58.5dB (typ) signal-to-noise ratio (SNR) at a 20MHz input frequency. The fully differential input stage has a -3dB 400MHz bandwidth and may be operated with single-ended inputs. In addition to low operating power, the MAX1449 features a 5µA power-down mode for idle periods.

An internal 2.048V precision bandgap reference is used to set the ADC's full-scale range. A flexible reference structure allows the user to supply a buffered, direct, or externally derived reference for applications requiring increased accuracy or a different input voltage range.

See a parametric table of the complete family of pin-compatible, 10-bit high-speed ADCs.

The MAX1449 has parallel, offset binary, CMOS-compatible, three-state outputs that can be operated from 1.7V to 3.6V to allow flexible interfacing. The device is available in a 5mm x 5mm 32-pin TQFP package and is specified over the extended industrial (-40°C to +85°C) temperature range.

MAX1449: Functional Diagram Enlarge+

Key Features

• Single 3.3V Operation
• Excellent Dynamic Performance
  • 58.5dB SNR at f_IN = 20MHz
  • 72dBc SFDR at f_IN = 20MHz
• Low Power
  • 62mA (Normal Operation)
  • 5µA (Shutdown Mode)
• Fully Differential Analog Input
• Wide 2V_P-P Differential Input Voltage Range
• 400MHz -3dB Input Bandwidth
• On-Chip 2.048V Precision Bandgap Reference
• CMOS-Compatible Three-State Outputs
• 32-Pin TQFP Package
• Evaluation Kit Available (MAX1448 EV Kit)

Applications/Uses

• Baseband and IF Digitization
• CCD Imaging
• Digital Set-Top Boxes
• Ultrasound Imaging
• Video Digitizing Applications