ADI AD9125BCPZRL

The AD9125 is a dual, 16-bit, high dynamic range TxDAC+ digital-to-analog converter (DAC) that provides a sample rate of 1000 MSPS, permitting a multicarrier generation up to the Nyquist frequency. It includes features optimized for direct conversion transmit applications, including complex digital modulation, and gain and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x F-MOD series. A 4-wire serial port interface allows programming/readback of many internal parameters. Full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA. The AD9125 comes in a 72-lead LFCSP.

• Flexible CMOS interface allows dual-word, word, or byte load
• Single-carrier W-CDMA ACLR τ = 80 dBc at 122.88 MHz IF
• Analog output: adjustable 8.7 mA to 31.7 mA, R1 = 25 Ω to 50 Ω
• Novel 2x/4x/8x interpolator/complex modulator allows carrier placement anywhere in the DAC bandwidth
• Gain and phase adjustment for sideband suppression
• Multichip synchronization interface
• High performance, low noise PLL clock multiplier
• Digital inverse sinc filter
• Low power: 900 mW at 500 MSPS, full operating conditions
• 72-lead, exposed paddle LFCSP

• Wireless infrastructure
• W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE
• Digital high or low IF synthesis
• Transmit diversity
• Wideband communications: LMDS/MMDS, point-to-point
• Cable modem termination systems