The AD9146 is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a sample rate of 1230 MSPS, permitting multicarrier generation up to the Nyquist frequency.
The AD9146 TxDAC+® includes features optimized for direct conversion transmit applications, including complex digital mod-ulation, and gain and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x F-MOD series from Analog Devices, Inc. A 3-wire serial port interface provides for program-ming/readback of many internal parameters. Full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA. The AD9146 comes in a 48-lead LFCSP.
- Flexible LVDS interface allows byte or nibble load
- Single-carrier W-CDMA ACLR = 80 dBc at 122.88 MHz IF
- Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 ohms to 50 ohms
- Integrated 2×/4× interpolator/complex modulator allows carrier placement anywhere in the DAC bandwidth
- Gain, dc offset, and phase adjustment for sideband suppression
- Multiple chip synchronization interfaces
- High performance, low noise PLL clock multiplier
- Digital inverse sinc filter
- Low power: 1.2 W @ 1.0 GSPS, 800 mW @ 500 MSPS, full operating conditions
- 48-lead, exposed paddle LFCSP
