ADS4249 Datasheet | Texas Instruments

Features - 1 Maximum Sample Rate: 250 MSPS - Ultra-Low Power with Single 1.8-V Supply: - 560-m W Total Power at 250 MSPS - High Dynamic Performance: - 80-d Bc SFDR at 170 MHz - 71.7-d BFS SNR at 170 MHz - Crosstalk: > 90 d B at 185 MHz - Programmable Gain up to 6 d B for SNR/SFDR Trade-off - DC Offset Correction - Output Interface Options: - 1.8-V Parallel CMOS Interface - Double Data Rate (DDR) LVDS with Programmable Swing: - Standard Swing: 350 m V - Low Swing: 200 m V - Supports Low Input Clock Amplitude Down to 200 m VPP - Package: 9-mm × 9-mm, 64-Pin VQFN Package 2 Applications - Wireless munications Infrastructure - Software Defined Radios - Power Amplifier Linearization 3 Description The ADS4249 is a member of the ADS42xx ultralowpower family of dual-channel, 12-bit and 14-bit analog-to-digital converters (ADCs). Innovative design techniques are used to achieve high dynamic performance and consume extremely low power with a 1.8-V supply. This topology makes the ADS4249 well-suited for multi-carrier, wide-bandwidth munications applications. The ADS4249 has gain options that can be used to improve SFDR performance at lower full-scale input ranges. This device also includes a dc offset correction loop that can be used to cancel the ADC offset. Both DDR LVDS and parallel CMOS digital output interfaces are available in a pact VQFN-64 Power PAD™ package. The device includes internal references and the traditional reference pins and associated decoupling capacitors have been eliminated. The ADS4249 is specified over the industrial temperature range (- 40°C to 85°C). Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) VQFN (64) 9.00 mm × 9.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. ADS4249 Block Diagram INP_A INM_A Sampling Circuit 14-bit ADC CLKP CLKM INP_B INM_B Sampling...