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ADS4242IRGCR bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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ADS4242IRGCR bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 104 page ADS4222, ADS4225, ADS4226 ADS4242, ADS4245, ADS4246 www.ti.com SBAS533C – MARCH 2011 – REVISED JUNE 2011 Dual-Channel, 14-/12-Bit, 160/125/65MSPS Ultralow-Power ADC Check for Samples: ADS4222, ADS4225, ADS4226, ADS4242, ADS4245, ADS4246 1 FEATURES APPLICATIONS 23 • Ultralow Power with Single 1.8V Supply, • Wireless Communications Infrastructure CMOS Output: • Software Defined Radio – 183mW total power at 65MSPS • Power Amplifier Linearization – 277mW total power at 125MSPS – 332mW total power at 160MSPS DESCRIPTION • High Dynamic Performance: The ADS424x/422x are low-speed variants of the ADS42xx ultralow-power family of dual-channel, – 88dBc SFDR at 170MHz 14-bit/12-bit analog-to-digital converters (ADCs). – 71.4dBFS SNR at 170MHz Innovative design techniques are used to achieve • Crosstalk: > 90dB at 185MHz high-dynamic performance, while consuming • Programmable Gain up to 6dB for extremely low power with 1.8V supply. This topology SNR/SFDR Trade-off makes the ADS424x/422x well-suited for multi-carrier, • DC Offset Correction wide-bandwidth communications applications. • Output Interface Options: The ADS424x/422x have gain options that can be – 1.8V parallel CMOS interface used to improve SFDR performance at lower full-scale input ranges. These devices include a dc – Double data rate (DDR) LVDS with offset correction loop that can be used to cancel the programmable swing: ADC offset. Both DDR (double data rate) LVDS and – Standard swing: 350mV parallel CMOS digital output interfaces are available – Low swing: 200mV in a compact QFN-64 PowerPAD ™ package. • Supports Low Input Clock Amplitude The devices include internal references while the Down to 200mVPP traditional reference pins and associated decoupling • Package: QFN-64 (9mm × 9mm) capacitors have been eliminated. All devices are specified over the industrial temperature range ( –40°C to +85°C). ADS424x/422x FAMILY COMPARISON(1) 250MSPS 160MSPS 125MSPS 65MSPS ADS424x ADS4249 ADS4246 ADS4245 ADS4242 14-bit family ADS422x ADS4229 ADS4226 ADS4225 ADS4222 12-bit family (1) See for details on migrating from the ADS62P49 family. PERFORMANCE SUMMARY ADS4246 ADS4245 ADS4242 ADS4226 ADS4225 ADS4222 SFDR (dBc), fIN = 20MHz 86 88 91 86 88 91 SFDR (dBc), fIN = 170MHz 82 88 85 82 88 85 SNR (dBFS), fIN = 20MHz 72.8 73.4 73.6 70.5 70.8 70.9 SNR (dBFS), fIN = 170MHz 70.4 71.4 71.2 69.5 69.9 69.9 Total power (mW/channel) 166 138 91 166 138 91 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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