The ADS7818 is a 12-bit sampling analog-to-digitalconverter (A/D) complete with sample/hold, internal2.5V reference, and synchronous serial interface. Typicalpower dissipation is 11mW at a 500kHz throughputrate. The device can be placed into a power downmode which reduces dissipation to just 2.5mW. Theinput range is zero to two times the reference voltage,and the internal reference can be overdriven by anexternal voltage.Low power, small size, and high-speed make theADS7818 ideal for battery operated systems such aswireless communication devices, portable multi-channeldata loggers, and spectrum analyzers. The serialinterface also provides low-cost isolation for remotedata acquisition. The ADS7818 is available in a plasticmini-DIP-8 or an MSOP-8 package and is guaranteedover the –40°C to +85°C temperature range.