A 16-bit charge redistribution SAR analog-to-digital converter provides fully differential conversion at up to 2 MSPS in wideband warp and warp modes. The converter operates from a single 2.5 V analog and digital core supply with a 2.3 V to 3.6 V output interface supply. It includes an internal conversion clock, 2.048 V reference and buffer, error correction circuitry, and serial or parallel digital interface ports. Performance includes ±1.5 LSB maximum INL, 92.5 dB typical dynamic range, and −115 dB typical THD at a 20 kHz input with a 2.5 V reference. Pb-free 48-lead LQFP and LFCSP packages are specified for −40°C to +85°C operation.
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| Resolution | 16bit |
| ADC architecture | Charge redistribution SAR |
| Input configuration | Fully differential |
| Throughput rate, wideband warp/warp modes | 2 maxMSPS |
| Throughput rate, normal mode | 1.5 maxMSPS |
| Integral nonlinearity | ±0.5 typ, ±1.5 maxLSB |
| No missing codes | 16bit |
| Dynamic range | 92.5 typdB |
| Signal-to-noise ratio | 92 typ at 20 kHz, VREF = 2.5 VdB |
| SINAD | 91 min, 92 typ at 20 kHz, VREF = 2.5 VdB |
| Total harmonic distortion | -115 typ at 20 kHz, VREF = 2.5 VdB |
| Spurious-free dynamic range | 117 typ at 20 kHz, VREF = 2.5 VdB |
| Internal reference voltage | 2.048 typV |
| Internal reference drift | ±8 typppm/°C |
| Differential input range | ±VREF, VREF up to 2.5V |
| Analog supply voltage AVDD | 2.37 to 2.63, 2.5 typV |
| Digital core supply voltage DVDD | 2.37 to 2.63, 2.5 typV |
| Output interface supply voltage OVDD | 2.30 to 3.6V |
| Digital interface | Parallel 16-bit or 8-bit bus; serial SPI/QSPI/MICROWIRE/DSP compatible |
| Power dissipation with internal reference | 70 typ, 85 max at 2 MSPSmW |
| Power-down dissipation | 2µW |
| Operating temperature range | -40 to +85°C |
| Pb-free | Yes |
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