ADS8254

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 FEATURES 1 1.0-MHz Sample Rate, Zero Latency at Full Speed 16-Bit Resolution 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 Auto/Manual Mode On-Board Differential ADC Driver (OPA) Buffered Reference Output to Level Shift Bipolar ±4-V Input with External Resistance Divider Reference/2 Output to Set Common-Mode for External Signal Conditioner 16-/8-Bit Parallel Interface SNR: 95.4dB Typ at 2-kHz I/P THD: –118dB Typ at 2-kHz I/P Power Dissipation: 331.25 mW at 1 MSPS Internal Reference Internal Reference Buffer 64-Pin QFN Package APPLICATIONS Medical Imaging/CT Scanners Automated Test Equipment High-Speed Data Acquisition Systems High-Speed Closed-Loop Systems DESCRIPTION The ADS8254 is a high-performance analog system-on-chip (SoC) device with an 16-bit, 1-MSPS A/D converter, 4-V internal reference, an on-chip ADC driver (OPA), and a 4-channel differential multiplexer. The channel count of the multiplexer and auto/manual scan modes of the device are user selectable. Th...