The AD9139 is 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a maximum update rate of 1600 MSPS, permitting multicarrier generation up to the Nyquist frequency. The AD9139 TxDAC+® includes features optimized for wide band communications applications, including 1× and 2× interpolation, a DLL based high speed interface, sample error detection, and parity detection. A 3-wire serial port interface provides for the programming/readback of many internal parameters. Full-scale output current can be programmed over a range of 9 up to 33mA. The AD9139 is available in a 72-lead LFCSP.
- Selectable 1×, 2× interpolation filter
- Support input signal bandwidth up to 575 MHz
- Very small inherent latency variation: <2 DAC clock cycles
- Proprietary low spurious and distortion design
- SFDR > 85 dBc (bandwidth = 300 MHz) at zero IF
- Flexible 16-bit LVDS interface
- Supports word and byte load
- Multiple chip synchronization
- Fixed latency and data generator latency compensation
- FIFO eases system timing and includes error detection
- High performance, low noise PLL clock multiplier
- Digital inverse sinc filter
- Applications
- Wireless communications: 3G/4G and MC-GSM base stations, wideband repeaters, software defined radios
- Wideband communications: point-to-point, LMDS/MMDS
- Transmit diversity/MIMO
- Instrumentation
- Automated test equipment
