General Description

The MAX12555 is a 3.3V, 14-bit, 95Msps analog-to-digital converter (ADC) featuring a fully differential wideband track-and-hold (T/H) input amplifier, driving a low-noise internal quantizer. The analog input stage accepts single-ended or differential signals. The MAX12555 is optimized for high dynamic performance, low power, and small size. Excellent dynamic performance is maintained from baseband to input frequencies of 175MHz and beyond, making the MAX12555 ideal for intermediatefrequency (IF) sampling applications.

Features

♦ Direct IF Sampling Up to 400MHz

♦ Excellent Dynamic Performance

    74dB/72dB SNR at fIN = 3MHz/175MHz

    87.4dBc/76.2dBc SFDR at fIN = 3MHz/175MHz

♦ Low Noise Floor: 74.6dBFS

♦ 3.3V Low-Power Operation

    465mW (Single-Ended Clock Mode)

    497mW (Differential Clock Mode)

    300µW (Power-Down Mode)

♦ Fully Differential or Single-Ended Analog Input

♦ Adjustable Full-Scale Analog Input Range ±0.35V to ±1.10V

♦ Common-Mode Reference

♦ CMOS-Compatible Outputs in Two’s Complement or Gray Code

♦ Data-Valid Indicator Simplifies Digital Interface

♦ Data Out-of-Range Indicator

♦ Miniature, 6mm x 6mm x 0.8mm 40-Pin Thin QFN Package with Exposed Paddle

♦ Evaluation Kit Available (Order MAX12555EVKIT)

Applications

    IF and Baseband Communication Receivers Cellular, Point-to-Point Microwave, HFC, WLAN

    Medical Imaging Including Positron Emission Tomography (PET)

    Video Imaging

    Portable Instrumentation

    Low-Power Data Acquisition