The ADS7818 is a 12-bit sampling analog-to-digital converter (A/D) complete with sample/hold, internal 2.5V reference, and synchronous serial interface. It has low power, small size, and high-speed characteristics, making it ideal for battery operated systems such as wireless communication devices, portable multi-channel data loggers, and spectrum analyzers. It also provides low-cost isolation for remote data acquisition.
The ADS7818 is a 12‑bit successive‑approximation register (SAR) analog‑to‑digital converter featuring a built‑in 2.5 V band‑gap reference, single‑supply +5 V operation, and a serial synchronous interface. It offers 500 kHz throughput, 11 mW typical power dissipation, and operates over a temperature range of –40 °C to +85 °C.
Typical applications include battery‑operated systems, digital signal processing, high‑speed data acquisition, and wireless communication devices. The device is available in plastic mini‑DIP‑8 and MSOP‑8 packages and supports both internal and external reference options for flexible input ranges.
| Resolution | 12 bits |
|---|---|
| Throughput Rate | 500 kHz |
| Power Dissipation (typical) | 11 mW |
| Supply Voltage | +5 V (single supply) |
| Input Range | 0 to 5 V (unipolar) |
| Conversion Time | 1.625 µs |
| Power‑down Current | 0.5 mA |
Typical power consumption is 11 mW.
The device is offered in mini‑DIP‑8 and MSOP‑8 packages.
The conversion time is 1.625 µs.
The ADC accepts a unipolar input range of 0 V to 5 V.