Hycon Technology is a manufacturer of Ultra-low power 24-bit Delta-sigma A/D converters, with 2, 4 or 6 channels it is suitble for all applications. The family is available in small packages (SSOP-16)
The internal PGA, temp-sensor and the sampling-rate selection makes the HY310-family an interesting product.
If your application requires more features, the HY11 family is a High-end A/D-converte with 8-bit RISC controller.
All products are LOW power and very attractive in cost.