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ADS8254IRGCR Arkusz danych(PDF) 1 Page - Texas Instruments |
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ADS8254IRGCR Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 36 page 1 FEATURES APPLICATIONS DESCRIPTION ADS8254 www.ti.com................................................................................................................................................................................................... SLAS643 – MARCH 2009 16-BIT, 1-MSPS, PSEUDO-BIPOLAR DIFFERENTIAL SAR ADC WITH ON-CHIP ADC DRIVER (OPA) AND 4-CHANNEL DIFFERENTIAL MULTIPLEXER • Medical Imaging/CT Scanners • 1.0-MHz Sample Rate, Zero Latency at Full Speed • Automated Test Equipment • High-Speed Data Acquisition Systems • 16-Bit Resolution • High-Speed Closed-Loop Systems • Supports Pseudo-Bipolar Differential Input Range: -4 V to +4 V with 2-V Common-Mode • Built-In Four Channel, Differential Ended Multiplexer; with Channel Count Selection and The ADS8254 is a high-performance analog Auto/Manual Mode system-on-chip (SoC) device with an 16-bit, 1-MSPS A/D converter, 4-V internal reference, an on-chip • On-Board Differential ADC Driver (OPA) ADC driver (OPA), and a 4-channel differential • Buffered Reference Output to Level Shift multiplexer. The channel count of the multiplexer and Bipolar ±4-V Input with External Resistance auto/manual scan modes of the device are user Divider selectable. • Reference/2 Output to Set Common-Mode for The ADC driver is designed to leverage the very high External Signal Conditioner noise performance of the differential ADC at optimum • 16-/8-Bit Parallel Interface power usage levels. • SNR: 95.4dB Typ at 2-kHz I/P The ADS8254 outputs a buffered reference signal for level shifting of a ±4-V bipolar signal with an external • THD: –118dB Typ at 2-kHz I/P resistance divider. A Vref/2 output signal is available • Power Dissipation: 331.25 mW at 1 MSPS to set the common-mode of a signal conditioning • Internal Reference circuit. The device also includes an 16-/8-bit parallel • Internal Reference Buffer interface. • 64-Pin QFN Package The ADS8254 is available in a 9 mm x 9 mm, 64-pin QFN package and is characterized from -40°C to 85°C. HIGH-SPEED SAR CONVERTER FAMILY TYPE/SPEED 500 kHz ~600 kHz 750 kHz 1 MHz 1.25 MHz 2 MHz 3 MHz 4MHz ADS8383 ADS8381 ADS8481 18-Bit Pseudo-Diff ADS8380 (s) ADS8382 (s) ADS8284 ADS8484 18-Bit Pseudo-Bipolar, Fully Diff ADS8482 ADS8327 ADS8370 (s) ADS8371 ADS8471 ADS8401 ADS8411 16-Bit Pseudo-Diff ADS8328 ADS8405 ADS8410 (s) ADS8319 ADS8318 ADS8372 (s) ADS8472 ADS8402 ADS8412 ADS8422 16-Bit Pseudo-Bipolar, Fully Diff ADS8254 ADS8406 ADS8413 (s) 14-Bit Pseudo-Diff ADS7890 (s) ADS7891 12-Bit Pseudo-Diff ADS7886 ADS7883 ADS7881 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. PRODUCTION DATA information is current as of publication date. Copyright © 2009, 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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