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ADS4122 Datasheet(PDF) 1 Page - Texas Instruments |
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ADS4122 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 82 page ADS4122, ADS4125 ADS4142, ADS4145 www.ti.com SBAS520A – FEBRUARY 2011 – REVISED MARCH 2011 14-/12-Bit, 65/125MSPS, Ultralow-Power ADC Check for Samples: ADS4122, ADS4125, ADS4142, ADS4145 1 FEATURES DESCRIPTION The ADS412x/4x are lower sampling speed variants 23 • Ultralow Power with 1.8V Single Supply: of the ADS41xx family of analog-to-digital converters – 103mW Total Power at 65MSPS (ADCs). These devices use innovative design – 153mW Total Power at 125MSPS techniques to achieve high dynamic performance, while consuming extremely low power at 1.8V supply. • High Dynamic Performance: The devices are well-suited for multi-carrier, wide – SNR: 72.2dBFS at 170MHz bandwidth communications applications. – SFDR: 81dBc at 170MHz The ADS412x/4x have fine gain options that can be • Dynamic Power Scaling with Sample Rate used to improve SFDR performance at lower • Output Interface: full-scale input ranges, especially at high input frequencies. They include a dc offset correction loop – Double Data Rate (DDR) LVDS with that can be used to cancel the ADC offset. At lower Programmable Swing and Strength sampling rates, the ADC automatically operates at – Standard Swing: 350mV scaled down power with no loss in performance. – Low Swing: 200mV The ADS412x/4x are available in a compact QFN-48 – Default Strength: 100Ω Termination pacakge and are specified over the industrial – 2x Strength: 50Ω Termination temperature range ( –40°C to +85°C). – 1.8V Parallel CMOS Interface Also Supported • Programmable Gain up to 6dB for SNR/SFDR Trade-Off • DC Offset Correction • Supports Low Input Clock Amplitude Down To 200mVPP • Package: QFN-48 (7mm × 7mm) ADS412x/ADS414x Family Comparison WITH ANALOG INPUT BUFFERS FAMILY 65MSPS 125MSPS 160MSPS 250MSPS 200MSPS 250MSPS ADS412x ADS4122 ADS4125 ADS4126 ADS4129 — ADS41B29 12-Bit Family ADS414x ADS4142 ADS4145 ADS4146 ADS4149 — ADS41B49 14-Bit Family 9-Bit — — — — — ADS58B19 11-Bit — — — — ADS58B18 — 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 PowerPAD is a trademark of Texas Instruments Incorporated. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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