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ADS4145IRGZT bảng dữ liệu(PDF) 4 Page - Texas Instruments |
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ADS4145IRGZT bảng dữ liệu(HTML) 4 Page - Texas Instruments |
4 / 81 page ADS4122, ADS4125 ADS4142, ADS4145 SBAS520A – FEBRUARY 2011 – REVISED MARCH 2011 www.ti.com RECOMMENDED OPERATING CONDITIONS Over operating free-air temperature range, unless otherwise noted. ADS4122/5, ADS4142/5 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 ADS4122/ADS4142, low-speed mode enabled by default 20 65 MSPS ADS4125/ADS4145, low-speed mode enabled 20 80 MSPS ADS4125/ADS4145, low-speed mode disabled >80 125 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 Low-speed enabled 40 50 60 % Low-speed disabled 35 50 65 % 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 = 03h, register data = 03h Set the MODE 2 register bit to get best performance at high input Mode 2 signal frequencies greater than 230MHz. Register address = 4Ah, register data = 01h (1) With 0dB gain. See the 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 obtain 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. 4 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): ADS4122 ADS4125 ADS4142 ADS4145 |
Số phần tương tự - ADS4145IRGZT |
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Mô tả tương tự - ADS4145IRGZT |
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