ADS8331(Low-Power, 16-Bit, 500-kSPS, 4-Channel Unipolar Input,ADC With Serial Interface)IntroductionThe ADS8331 is a low-power, 16-bit, 500k samples-per-second (SPS) analog-to-digital converter (ADC) with a unipolar, 4-t0-1 multiplexer (mux) input. The device includes a 1 6-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 x 4 VQFN and 24-pin TSSOP packages and are fully specified for operation over the industrial -40°C to 85°C temperature range.FeatureLow-Power, Flexible Supply Range: – 2.7-V to 5.5-V Analog Supply – 8.7 mW (250 kSPS in Auto-NAP Mode,VA= 2.7V, VBD= 1.65 V) – 14.2 mW (500 kSPS, VA= 2.7 V,VBD= 1.65 V)Up to 500-KkSPS Sampling RateExcellent 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 TemperatureExcellent AC Performanceat5 V, fN= 1 kHz: – 91.5dB SNR, 101dB SFDR, -100dB THDFlexible Analog Input Arrangement – On-Chip 4, 8-Channel Mux With Breakout – Auto, Manual Channel Select and TriggerOther 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: 1.65V to VA – SCLKupto40MHz(VA=VBD=5V)24-Pin 4-mm x 4-mm VQFN and 24-Pin TSSOP PackagesAppearance
