ADS61B49 Datasheet | Texas Instruments

FEATURES - Integrated High Impedance Analog Input Buffer - Maximum Sample Rate: 250 MSPS - 14-Bit Resolution - ADS61B49 - 12-Bit Resolution - ADS61B29 - 790 m W Total Power Dissipation at 250 MSPS - Double Data Rate (DDR) LVDS and Parallel CMOS Output Options - Programmable Fine Gain up to 6 d B for SNR/SFDR Trade-Off and 1-Vpp Full-Scale Operation - DC Offset Correction - Supports Input Clock Amplitude Down to 400 m VPP Differential - 48-QFN Package (7mm × 7mm) - Pin patible with ADS6149 Family APPLICATIONS - Multicarrier, Wide Bandwidth munications - Wireless Multi-Carrier munications Infrastructure - Software Defined Radio - Power Amplifier Linearization Feedback ADC - 802.16d/e - Test and Measurement Instrumentation - High Definition Video - Medical Imaging - Radar Systems DESCRIPTION The ADS61B49 (ADS61B29) is a 14-bit (12-bit) A/D converter with a sampling rate up to 250 MSPS. It bines high dynamic performance and low power consumption in a pact 48-QFN package. An integrated analog buffer makes it well-suited for multi-carrier, wide bandwidth munications applications. The buffer maintains constant performance and input impedance across a wide frequency range. The ADS61B49 (ADS61B29) has fine gain options that can be used to improve SFDR performance at lower full-scale input ranges. It includes a dc offset correction loop that can be used to cancel the ADC offset. Both Double Data Rate (DDR) LVDS and parallel CMOS digital output interfaces are available. At lower sampling rates, the ADC automatically operates at scaled down power with no loss in performance. It includes internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. The device is specified over the industrial temperature range (- 40°C to 85°C). ANALOG BUFFER ADS614X 14-Bit Family NO YES ADS612X 12-Bit Family NO YES 250 MSPS ADS6149 ADS61B49 ADS6129 ADS61B29 210 MSPS ADS6148 ADS6128...