A PCF8591 AD / DA chip introduced
PCF8591 is a monolithic , single supply, low power ,8-bit CMOS data acquisition device . PCF8591 has four analog inputs, one analog output and a serial I2C bus interface . PCF8591 the three address pins A0, A1 and A2 can be used for programming the hardware address , allowing access to the same I2C- bus PCF8591 8 devices without the need for additional hardware. PCF8591 device on the input and output address, control and data signals are bi-directional two-wire I2C-bus for transmission in a serial manner .