| Resolution (Bits) | 18 |
| Number of input channels | 1 |
| Sample rate (Max) (kSPS) | 1000 |
| Interface type | Byte-Wide, Parallel |
| Architecture | SAR |
| Input type | Pseudo-Differential, Single-Ended |
| Rating | Catalog |
| Reference mode | Ext, Int |
| Input range (Max) (V) | 4.1 |
| Input range (Min) (V) | 0 |
| Features | Oscillator |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 220 |
| Analog voltage AVDD (Min) (V) | 4.75 |
| SNR (dB) | 94 |
| Analog voltage AVDD (Max) (V) | 5.25 |
| INL (Max) (+/-LSB) | 3.5 |
| Digital supply (Min) (V) | 2.7 |
| Digital supply (Max) (V) | 5.25 |
- 0 to 1 MSPS Sampling Rate
- 18-Bit NMC Ensured Over Temperature
- Low ±0.1 mV Offset Error
- Low 0.2 ppm/°C Offset Error Temperature Drift
- Low 0.6 ppm/°C Gain Error Temperature Drift
- Zero Latency
- Low Power: 220 mW at 1 MSPS
- Unipolar Single-Ended Input Range: 0 V to Vref
- Onboard Reference
- Onboard Reference Buffer
- High-Speed Parallel Interface
- Wide Digital Supply 2.7 V ~ 5.25 V
- 8-/16-/18-Bit Bus Transfer
- 7x7 QFN Package
- APPLICATIONS
- Medical Instruments
- Optical Networking
- Transducer Interface
- High Accuracy Data Acquisition Systems
- Magnetometers
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.