This paper presents a small area CMOS current-steering segmented digital-to-analog converter (DAC) design used in a RF transmitter stage for 2.45GHz Bluetooth applications. The current source design strategy is based on an iterative scheme which variables are adjusted by a simple way, satisfying the requirements, minimizing power consumption and reaching the design specifications. A theoretical analysis of static-dynamic requirements and a new layout strategy of small area consumption for the current-steering DAC design is included. The DAC was designed and implemented in 0.35mm 4M2P CMOS technolyogy. Some performance results obtained through experimental test are: chip active area of only 200mm-200mm, full scale output current of 700mA at 3.3V power supply, INL=0.3LSB, DNL=0.37LSB, SFDR=58dB for output sine wave frequency of Fout = 1MHz and Fs = 50MHz sampling frequency, SFDR=52dB for Fout = 1MHz and Fs = 10MHz.