The ADS8481 is an 18-bit, 1-MSPS A/D converter with an internal 4.096-V reference and a pseudo-differential unipolar single-ended input. The device includes a 18-bit capacitor-based SAR A/D converter with inherent sample and hold. The ADS8481 offers a full 18-bit interface, a 16-bit option where data is read using two read cycles, or an 8-bit bus option using three read cycles.
The ADS8481 is available in a 7x7 QFN package and is characterized over the industrial -40°C to 85°C temperature range.
| Resolution (Bits) | 18 |
| Sample rate (max) (ksps) | 1000 |
| Number of input channels | 1 |
| Interface type | Byte-Wide, Parallel |
| Architecture | SAR |
| Input type | Pseudo-Differential, Single-ended |
| Rating | Catalog |
| Reference mode | External, Internal |
| Input voltage range (max) (V) | 4.1 |
| Input voltage range (min) (V) | 0 |
| Features | Oscillator |
| Operating temperature range (°C) | -40 to 85 |
| Power consumption (typ) (mW) | 220 |
| Analog supply (min) (V) | 4.75 |
| Analog supply voltage (max) (V) | 5.25 |
| SNR (dB) | 94 |
| Digital supply (min) (V) | 2.7 |
| Digital supply (max) (V) | 5.25 |
| VQFN (RGZ) | 48 | 49 mm² 7 x 7 |
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