ADI's AD9121 is a dual, 14-bit, high dynamic range digital-to-analog converter (DAC) that provides a sample rate of 1230 MSPS, permitting multi-carrier generation up to the Nyquist frequency.
The AD9121 TxDAC+ includes features optimized for direct-conversion transmitter applications, including complex digital modulation as well as 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. A 4-wire serial port interface provides for programming andread back of many internal parameters. Full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA. The AD9121 comes in a 72-lead LFCSP.
The AD9122 is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a sample rate of 1200 MSPS, permitting a multi-carrier generation up to the Nyquist frequency. It includes features optimized for direct-conversion transmitter applications, including complex digital modulation as well as 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. A 4-wire serial port interface provides for programming and read back of many internal parameters. Full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA. The AD9122 comes in a 72-lead LFCSP.
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- Single-carrier W-CDMA ACLR = 82 dBc at 122.88 MHz IF
- Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 Ω to 50 Ω
- Integrated two-, four-, and eight-time interpolator/complex modulator allows carrier placement anywhere in the DAC bandwidth (AD9121)
- Novel two-, four-, and eight-time interpolator/complex modulator allows carrier placement anywhere in the DAC bandwidth (AD9122)
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- Gain, DC offset, and phase adjustment for sideband suppression (AD9121)
- Digital gain and phase adjustment for sideband suppression (AD9122)
- Multiple chip-synchronization interfaces
- 72-lead, exposed paddle LFCSP
- Flexible LVDS interface allows word, byte (both), or nibble (AD9122 only)
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ADI's AD9121 is a dual, 14-bit, high dynamic range digital-to-analog converter (DAC) that provides a sample rate of 1230 MSPS, permitting multi-carrier generation up to the Nyquist frequency.
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