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.
| Resolution (Bits) | 16 |
| Sample rate (max) (ksps) | 500 |
| Number of input channels | 8 |
| Interface type | SPI |
| Architecture | SAR |
| Input type | Pseudo-Differential, Single-ended |
| Multichannel configuration | Multiplexed |
| Rating | Catalog |
| Reference mode | External |
| Input voltage range (max) (V) | 4.2 |
| Input voltage range (min) (V) | 0 |
| Features | Daisy-Chainable |
| Operating temperature range (°C) | -40 to 85 |
| Power consumption (typ) (mW) | 14.2 |
| Analog supply (min) (V) | 2.7 |
| Analog supply voltage (max) (V) | 5.5 |
| SNR (dB) | 91.5 |
| Digital supply (min) (V) | 1.65 |
| Digital supply (max) (V) | 5.5 |
| TSSOP (PW) | 24 | 49.92 mm² 7.8 x 6.4 |
| VQFN (RGE) | 24 | 16 mm² 4 x 4 |
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