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ADC34J44IRGZR bảng dữ liệu(PDF) 6 Page - Texas Instruments |
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ADC34J44IRGZR bảng dữ liệu(HTML) 6 Page - Texas Instruments |
6 / 90 page ADC34J42, ADC34J43, ADC34J44, ADC34J45 SBAS664B – MAY 2014 – REVISED NOVEMBER 2014 www.ti.com 7.4 Summary of Special Mode Registers Table 1 lists the location, value, and functions of special mode registers in the device. Table 1. Special Modes Summary MODE LOCATION VALUE AND FUNCTION DIS DITH CHA 01h [7:6], 134h[5,3] Creates a noise floor cleaner and improves SFDR; see the DIS DITH CHB 01h [5:4], 434h[5,3] Internal Dither Algorithm section. Dither mode 0000 = Dither disabled DIS DITH CHC 01h [3:2], 534h[5,3] 1111 = Dither enabled DIS DITH CHD 01h [1:0], 234h[5,3] SPECIAL MODE 1 CHA 06h[4:2] Use for better HD3. SPECIAL MODE 1 CHB 07h[4:2] 000 = Default after reset Special mode 1 010 = Use for frequency < 120 MHz SPECIAL MODE 1 CHC 08h[4:2] 111 = Use for frequency > 120 MHz SPECIAL MODE 1 CHD 09h[4:2] SPECIAL MODE 2 CHA 122h[1:0] Helps improve HD2. SPECIAL MODE 2 CHB 422h[1:0] Special mode 2 00 = Default after reset SPECIAL MODE 2 CHC 522h[1:0] 11 = Improves HD2 SPECIAL MODE 2 CHD 222h[1:0] 7.5 Thermal Information ADC34J4x THERMAL METRIC(1) RGZ (VQFN) UNIT 48 PINS RθJA Junction-to-ambient thermal resistance 25.7 RθJC(top) Junction-to-case (top) thermal resistance 18.9 RθJB Junction-to-board thermal resistance 3.0 °C/W ψJT Junction-to-top characterization parameter 0.2 ψJB Junction-to-board characterization parameter 3 RθJC(bot) Junction-to-case (bottom) thermal resistance 0.5 (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. 6 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Product Folder Links: ADC34J42 ADC34J43 ADC34J44 ADC34J45 |
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