The 18-bit successive-approximation ADC operates at up to 1 MSPS with zero latency. The converter samples a true differential analog input over a ±VREF range and supports an external reference from 2.5 V to 5 V. It operates from a single 2.5 V supply with a separate logic interface compatible with 1.8 V, 2.5 V, 3 V, and 5 V systems. The serial interface is SPI, QSPI, MICROWIRE, and DSP compatible and supports daisy chaining with an optional busy indicator. Operation is specified from −40°C to +85°C in 10-lead MSOP and 3 mm × 3 mm 10-lead LFCSP packages.
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| Converter type | Successive approximation ADC |
| Resolution | 18bit |
| Throughput rate | 1MSPS |
| Analog input type | True differential |
| Analog input range | ±VREF |
| Reference voltage range | 2.5 to 5V |
| Integral nonlinearity | ±1 typical, ±2 maximumLSB |
| Dynamic range | 99 at VREF = 5 VdB |
| Signal-to-noise ratio | 98 at fIN = 1 kHz, VREF = 5 VdB |
| Total harmonic distortion | −119 at fIN = 1 kHz, VREF = 5 VdB |
| SINAD | 97 at fIN = 1 kHz, VREF = 5 VdB |
| Supply voltage | 2.5V |
| Logic interface compatibility | 1.8, 2.5, 3, and 5V |
| Power dissipation at 1 MSPS | 7 totalmW |
| Power dissipation at 10 kSPS | 70µW |
| Digital interface | SPI/QSPI/MICROWIRE/DSP-compatible serial |
| Operating temperature range | −40 to +85°C |
| Package options | 10-lead MSOP; 3 mm × 3 mm 10-lead LFCSP |
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