AD7854/AD7854L is a 3V to 5V single supply, 200 kSPS 12-bit sampling ADC. It features low power consumption, flexible parallel interface, automatic power management, and is suitable for battery-powered systems, instrumentation and control systems, etc.
The AD7854 and AD7854L are single‑supply 12‑bit analog‑to‑digital converters from Analog Devices. The AD7854 is optimized for high speed (200 kSPS) while the AD7854L targets low‑power applications (100 kSPS). Both devices operate from a 3 V to 5.5 V supply, provide self‑calibration and system‑calibration options, and feature a flexible parallel interface.
The datasheet details electrical specifications, timing parameters, absolute maximum ratings, pin functions, and on‑chip register maps. It also includes an ordering guide, package options (28‑lead DIP, SOIC, SSOP), and application notes for battery‑powered systems, instrumentation, and high‑speed modems.
| Resolution | 12 bits |
|---|---|
| Normal‑mode power consumption (AD7854) | 15 mW at Vpp = 3 V |
| Normal‑mode power consumption (AD7854L) | 5.5 mW at Vpp = 3 V |
| Maximum conversion rate | 200 kSPS (AD7854), 100 kSPS (AD7854L) |
| Supply voltage range | 3 V to 5.5 V |
| Input voltage range (unipolar) | 0 to Vapp |
| Package options | 28‑Lead DIP, SOIC, SSOP |
| Signal‑to‑Noise + Distortion Ratio (SNR) | 70 dB min |
The AD7854 can sample up to 200 kSPS, while the low‑power AD7854L can sample up to 100 kSPS.
In normal mode the AD7854 uses about 15 mW (Vpp = 3 V) and the AD7854L uses about 5.5 mW (Vpp = 3 V).
Yes, the device includes automatic power‑down after conversion and additional sleep‑mode power‑down options.