DAC14135 Datasheet | National Semiconductor

Description The DAC14135 is a monolithic 14-bit, 135MSPS digital-to-analog converter. The device has been optimized for use in cellular base stations and other applications where high resolution, high sampling rate, wide dynamic range, and pact size are required. The DAC14135 has many integrated features including a proprietary segmented DAC core, differential current outputs, a band-gap voltage reference, and TTL/CMOS patible inputs. The converter features an 85d Bc spurious free dynamic range (SFDR) at low frequencies and a 70d Bc SFDR with 20MHz output signals. The 48-pin TSSOP package provides an extremely small footprint for applications where space is a critical consideration. The DAC14135 operates from a single +5V power supply. The digital power supply can also operate from +3.3V for lower power consumption and patibility with +3.3V data inputs. The DAC14135 is fabricated in a 0.5µm CMOS process and is specified over the industrial temperature range of -40°C to +85°C. National Semiconductor thoroughly tests each part to verify full pliance with the guaranteed specifications. Features - 135 MSPS - Wide dynamic range SFDR @ 1MHz fout: 85d Bc SFDR @ 5MHz fout: 79d Bc SFDR @ 20MHz fout: 70d Bc - Differential Current Outputs - Low power consumption: 185m W - Very small package: 48-pin TSSOP - TTL/CMOS (+3.3V or +5V) inputs Applications - Cellular Basestations: GSM, WCDMA, DAMPS, etc. - Multi-carrier Basestations - Multi-standard Basestations - Direct digital synthesis (DDS) - ADSL modems - HFC modems W-CDMA ACPR -30 -40 -50 ACPR Lower 72.1d B Fs = 32.768MSPS ACPR Upper 73d B Four-Tone SFDR SFDR > 70d Bc Fs = 135MSPS Fout1 = 6.2MHz Fout2 = 9.31MHz Fout3 = 18.8MHz Fout4 = 21.95MHz Ampl. = 0d BFS -20 Power (d B) Power (d B) -60 -70 -80 -90 -100 -110 -120 2 4 6 8 10 12 14 16 -40 -60 -80 -100 5 10 15 20 25 30 Frequency (MHz) Frequency (MHz) © 1999 National Semiconductor Corporation Printed in the U.S.A. http://.national. DAC14135 Electrical Characteristics PARAMETE...