描述 The ADS8331 is a low-power, 16-bit, 500-k samples-per-second (SPS) analog-to-digital converter (ADC) with a unipolar, 4-to-1 multiplexer (mux) input. The device includes a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold.The ADS8332 is based on the same core and includes a unipolar 8-to-1 input mux. Both devices offer a high-speed, wide-voltage serial interface and are capable of daisy-chain operation when multiple converters are used.These converters are available in 24-pin, 4 × 4 QFN and 24-pin TSSOP packages and are fully specified for operation over the industrial –40°C to 85°C temperature range.特性Low-Power, Flexible Supply Range: 2.7-V to 5.5-V Analog Supply 8.7 mW (250 kSPS in Auto-NAP Mode, VA = 2.7 V, VBD = 1.65 V) 14.2 mW (500 kSPS, VA = 2.7 V, VBD = 1.65 V) Up to 500-kSPS Sampling Rate Excellent DC Performance: ±1.2 LSB Typical, ±2 LSB Maximum INL at 2.7 V ±0.6 LSB Typical, –1/1.5 LSB Maximum DNL at 2.7 V 16-Bit NMC Over Temperature Excellent AC Performance at 5 V, fIN = 1 kHz: 91.5-dB SNR, 101-dB SFDR, –100-dB THD Flexible Analog Input Arrangement: On-Chip 4-/8-Channel Mux With Breakout Auto/Manual Channel Select and Trigger Other Hardware Features: On-Chip Conversion Clock (CCLK) Software/Hardware Reset Programmable Status/Polarity EOC/INT Daisy-Chain Mode Global CONVST (Independent of CS) Deep, Nap, and Auto-NAP Powerdown Modes SPI™/DSP Compatible Serial Interface Separate I/O Supply: 1.65 V to VA SCLK up to 40 MHz (VA = VBD = 5 V) 24-Pin 4-mm × 4-mm VQFN and 24-Pin TSSOP Packages