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ADS4126IRGZ25 Datasheet(PDF) 6 Page - Texas Instruments |
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ADS4126IRGZ25 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 77 page ADS4126, ADS4129 ADS4146, ADS4149 SBAS483D – NOVEMBER 2009 – REVISED APRIL 2010 www.ti.com RECOMMENDED OPERATING CONDITIONS Over operating free-air temperature range, unless otherwise noted. ADS412x, ADS414x MIN TYP MAX UNIT SUPPLIES AVDD Analog supply voltage 1.7 1.8 1.9 V DRVDD Digital supply voltage 1.7 1.8 1.9 V ANALOG INPUTS Differential input voltage range(1) 2 VPP Input common-mode voltage VCM ± 0.05 V Maximum analog input frequency with 2VPP input amplitude (2) 400 MHz Maximum analog input frequency with 1VPP input amplitude (2) 800 MHz CLOCK INPUT Input clock sample rate ADS4129/ADS4149 1 250 MSPS ADS4126/ADS4146 1 160 MSPS Input clock amplitude differential (VCLKP – VCLKM) Sine wave, ac-coupled 0.2 1.5 VPP LVPECL, ac-coupled 1.6 VPP LVDS, ac-coupled 0.7 VPP LVCMOS, single-ended, ac-coupled 1.8 V Input clock duty cycle 50 % DIGITAL OUTPUTS CLOAD Maximum external load capacitance from each output pin to DRGND 5 pF Differential load resistance between the LVDS output pairs (LVDS RLOAD 100 Ω mode) TA Operating free-air temperature –40 +85 °C HIGH PERFORMANCE MODES(3)(4)(5) Set the MODE 1 register bits to get best performance across sample Mode 1 clock and input signal frequencies. Register address = 0x03, register data = 0x03 Set the MODE 2 register bit to get best performance at high input Mode 2 signal frequencies. Register address = 0x4A, register data = 0x01 (1) With 0dB gain. See the Fine Gain section in the Application Information for relation between input voltage range and gain. (2) See the Theory of Operation section in the Application Information. (3) It is recommended to use these modes to get best performance. These modes can be set using the serial interface only. (4) See the Serial Interface section for details on register programming. (5) Note that these modes cannot be set when the serial interface is not used (when the RESET pin is tied high); see the Device Configuration section. 6 Submit Documentation Feedback Copyright © 2009–2010, Texas Instruments Incorporated Product Folder Link(s): ADS4126 ADS4129 ADS4146 ADS4149 |
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