Dual SAR analog-to-digital converter provides two simultaneous 16-bit conversions at up to 500 kSPS in normal mode. The device supports two selectable input pairs and can operate as a 4-channel ADC with two channels sampled at the same time. It uses 5 V analog and digital core supplies with a 2.7 V to 5.25 V digital I/O supply for 3 V or 5 V logic interfaces. Serial and parallel digital interfaces are supported, and impulse mode reduces power at lower sampling rates. The converter is specified for operation from -40 °C to +85 °C and is offered in 48-lead LQFP and LFCSP packages.
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| Resolution | 16bit |
| ADC architecture | Successive approximation register |
| Throughput rate, normal mode | 500kSPS |
| Throughput rate, impulse mode | 444kSPS |
| Number of simultaneous ADC channels | 2 |
| Selectable analog input pairs | 2 |
| Analog input voltage range | 0 to 2 × VREFV |
| External reference voltage range | 2.3 to AVDD/2V |
| Signal-to-noise ratio | 90 typ at 20 kHz inputdB |
| Total harmonic distortion | -100 typ at 100 kHz inputdB |
| Spurious-free dynamic range | 105 typ at 100 kHz inputdB |
| Input bandwidth | 10 typMHz |
| Aperture delay | 2 typns |
| Aperture jitter | 5 typps rms |
| Analog supply voltage | 4.75 to 5.25V |
| Digital core supply voltage | 4.75 to 5.25V |
| Digital I/O supply voltage | 2.7 to 5.25V |
| Power dissipation at 500 kSPS | 120 typ, 135 maxmW |
| Operating temperature range | -40 to +85°C |
| Digital interface | 16-bit parallel or serial |
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