General Description

The MAX1181 is a 3V, dual 10-bit, analog-to-digital converter (ADC) featuring fully-differential wideband track-and-hold (T/H) inputs, driving two pipelined, nine stage ADCs. The MAX1181 is optimized for low-power, high-dynamic performance applications in imaging, instrumentation, and digital communication applications. The MAX1181 operates from a single 2.7V to 3.6V supply, consuming only 246mW, while delivering a typical signal-to-noise ratio (SNR) of 59dB at an input frequency of 20MHz and a sampling rate of 80Msps. The T/H driven input stages incorporate 400MHz (-3dB) input amplifiers. The converters may also be operated with single-ended inputs. In addition to low operating power, the MAX1181 features a 2.8mA sleep mode, as well as a 1µA power-down mode to conserve power during idle periods.

Features

♦ Single 3V Operation

♦ Excellent Dynamic Performance

    59dB SNR at fIN = 20MHz

    73dB SFDR at fIN = 20MHz

♦ Low Power

    82mA (Normal Operation)

    2.8mA (Sleep Mode)

    1µA (Shutdown Mode)

♦ 0.02dB Gain and 0.25° Phase Matching (typ)

♦ Wide ±1VP-P Differential Analog Input Voltage Range

♦ 400MHz, -3dB Input Bandwidth

♦ On-Chip 2.048V Precision Bandgap Reference

♦ User-Selectable Output Format—Two’s Complement or Offset Binary

♦ 48-Pin TQFP Package with Exposed Pad for Improved Thermal Dissipation

♦ Evaluation Kit Available

Applications

    High-Resolution Imaging

    I/Q Channel Digitization

    Multichannel IF Undersampling

    Instrumentation

    Video Application