The combination of programmable interpolation rate, high sample rates, and fine NCO modulation capability gives system designers flexibility when choosing D/A converter output frequencies. This is especially helpful in meeting four- to six-carrier GSM transmission specifications and other communications standards. Operating with the on-chip PLL at a D/A converter output frequency of 200 MHz, the AD9142 delivers a 79-dB ACLR for six-carrier GSM applications.
The AD9142 includes integrated interpolation filters with selectable interpolation factors of 2, 4, and 8. The dual D/A converter data interface supports word and byte load allowing customers to reduce input pins on lower data rates to save board space, power and cost. The AD9142 is available in a space-saving 72-pin LFCSP.
Pricing, Availability and Complementary Products
Complementary ADI components include the ADL537x and ADRF670x series quadrature modulators, and the AD9516 14-output clock generator IC.