The ADS8284 is a high-performance analog system-on-chip (SoC) device with an 18-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.
●The ADC driver is designed to leverage the very high noise performance of the differential ADC at optimum power usage levels.
●The ADS8284 outputs a buffered reference signal for level shifting of a ±4-V bipolar signal with an external resistance divider. A Vref/2 output signal is available to set the common-mode of a signal conditioning circuit. The device also includes an 18-/16-/8-bit parallel interface.
●The ADS8284 is available in a 9 mm × 9 mm, 64-pin QFN package and is characterized from -40°C to 85°C.
●For all available packages, see the orderable addendum at the end of the data sheet.
● 1.0-MHz Sample Rate, Zero Latency at Full Speed
● 18-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
● 18-/16-/8-Bit Parallel Interface
● SNR: 98.4dB Typ at 2-kHz I/P
● THD: –119dB Typ at 2-kHz I/P
● Power Dissipation: 331.25 mW at 1 MSPS Including
●ADC Driver
● Internal Reference
● Internal Reference Buffer
● 64-Pin QFN Package
