ADS8327IBRSAR

The ADS8327 is a low power, 16-bit, 500-kSPS analog-to-digital converter with a unipolar input. The device includes a 16-bit capacitor-based SAR A/D converter with inherent sample and hold. The ADS8328 is based on the same core and includes a 2-to-1 input MUX with programmable option of TAG bit output. Both the ADS8327 and ADS8328 offer a high-speed, wide voltage serial interface and are capable of chain mode operation when multiple converters are used. These converters are available in a 16-lead TSSOP or 4x4 QFN packages and are fully specified for operation over the industrial -40°C to +85°C temperature range.

Applications

• Communications
• Transducer Interface
• Medical Instruments
• Magnetometers
• Industrial Process Control
• Data Acquisition Systems
• Automatic Test Equipment

Key features

• 2.7-V to 5.5-V Analog Supply, Low Power: – 10.6 mW (500 kHz, +VA = 2.7 V, +VBD = 1.8 V)
• 500-kHz Sampling Rate
• Excellent DC Performance – ±1.5 LSB Typ, ±2 LSB Max INL; ±0.6 LSB Typ, ±1 LSB Max DNL
• 16-Bit NMC Over Temperature
• ±0.5 mV Max Offset Error at 2.7 V – ±1 mV Max Offset Error at 5 V
• Excellent AC Performance at fIN = 10 kHz with 91 dB SNR, 100 dB SFDR, -96 dB THD
• Built-In Conversion Clock (CCLK)
• 1.65 V to 1.5×(+VA) I/O Supply
• SPI/DSP Compatible Serial – SCLK up to 50 MHz
• Comprehensive Power-Down Modes: Deep Power-Down, Nap Power-Down, Auto Nap Power-Down
• Unipolar Input Range: 0 V to VREF
• Software Reset
• Global CONVST (Independent of CS)
• Programmable Status/Polarity EOC/INT
• 16-Pin 4×4 QFN or 16-Pin TSSOP Packages
• Multi-Chip Daisy Chain Mode
• Programmable TAG Bit Output
• Auto/Manual Channel Select Mode