AD7983 is a 16-bit, 1.33 MSPS PulSAR ADC that provides 10-lead MSOP (MSOP-8 size) and 10-lead 3 mm × 3 mm QFN1 (LFCSP) packages, a supply voltage range of 2.5 V, and supports single supply and multi-channel paralleling.
The AD7983 is a 16‑bit successive‑approximation (PulSAR) analog‑to‑digital converter offering up to 1.33 MSPS throughput. It operates from a single 2.5 V supply, supports 1.8 V‑5 V logic levels, and provides low power dissipation (≈10.5 mW at full speed). The device features a pseudo‑differential input range, no missing codes, and high linearity (INL ±0.6 LSB, DNL ±0.14 LSB).
Designed for precision measurement applications, the AD7983 includes a versatile serial interface (SPI, QSPI, Microwire, DSP‑compatible) and can be daisy‑chained. The datasheet provides detailed specifications, timing diagrams, pin descriptions, layout recommendations, and ordering information to aid designers in integrating the ADC into PCB designs.
| Resolution | 16 Bits |
|---|---|
| Throughput | 1.33 MSPS |
| Supply Voltage (VDD) | 2.5 V (single‑supply) |
| Reference Voltage Range | 2.9 V to 5.1 V |
| Integral Linearity Error (ILE) | -1.0 LSB to +0.6 LSB |
| Gain Error Temperature Drift | +0.41 ppm/°C |
| Zero Temperature Drift | 0.54 ppm/°C |
| Dynamic Range | 93 dB |
| Signal‑to‑Noise Ratio (SNR) | 90.5 dB – 92 dB |
| Spurious‑Free Dynamic Range (SFDR) | 114 dB |
| Total Harmonic Distortion (THD) | -115 dB |
| SINAD | 91.6 dB |
The AD7983 provides a 16‑bit resolution.
It can convert at up to 1.33 MSPS.
The device operates from a single 2.5 V supply (VDD).
Analog inputs must stay within –0.3 V to VREF + 0.3 V (or ±0.3 V).