The document is AD7943/AD7945/AD7948 datasheet, which introduces the features and characteristics of these products, including 12-Bit Multiplying DACs, Guaranteed Specifications with +3.3 V/+5 V Supply, Low Power: 5 �W typ Fast Interface, Low Glitch: 60 nV-s with Amplifier Connected, Fast Settling: 600 ns to 0.01% with AD843 etc.
The AD7943, AD7945 and AD7948 are fast 12‑bit current‑output DACs that operate from a single +5 V supply (normal mode) or +3.3 V to +5 V (biased mode). They are offered in DIP, SOP and SSOP packages and support serial, parallel or byte‑wide interfaces depending on the model.
Key specifications include 12‑bit resolution, ±0.5 LSB accuracy, low power consumption (≈5 µA IDD), fast 40 ns write strobe, 600 ns settling time, and low glitch (60 nV‑s). The datasheet also provides ordering information, absolute maximum ratings, pin configurations and timing diagrams for each device.
| Resolution | 12 bits |
|---|---|
| IDD (AD7943) | 5 µA max |
| Gain Temperature Coefficient | 2 ppm FSR/°C typ |
| Output Voltage Settling Time | 600 ns typ to 0.01 % FS |
| Digital‑to‑Analog Glitch Impulse | 60 nV‑s typ |
| Total Harmonic Distortion | –83 dB typ |
All three devices have a 12‑bit resolution, meaning 1 LSB = VREF/2¹².
The AD7943 draws up to 5 µA of supply current.
The output settles in about 600 ns to 0.01 % of full‑scale range.