DAC39RF20
- 16-bit Multi-Nyquist DAC core
- DAC sample rate:
- NRZ, RF Modes: 22GSPS
- DES2xL, DES2xH modes: 44GSPS
- Maximum input data rate:
- 12-bit, Dual channel: 21GSPS/ch
- 16-bit, Dual channel: 15.75GSPS/ch
- 16-bit, Single channel: 22GSPS
- -3dB Output Bandwidth: 22GHz
- Performance at fOUT = 8.9GHz, DES2XL,
IOUT=40mA
- Noise floor (small signal, DEM/Dither off): –162dBFS/Hz
- SFDR (-0.1dBFS): –64dBc
- IMD3 (-7dBFS each tone) : –67dBc
- Additive phase noise, 10kHz offset: -133dBc/Hz
- Optional PLL/VCO for DAC clock generation
- Four integrated digital up-converters (DUC)
- Interpolation: 1x, 4x, 6x, 8x to 256x
- Complex baseband DUC for I/Q output
- Complex to real upconversion for direct RF sampling
- 64-bit frequency resolution NCOs
- Phase continuous, synchronous and reset options with frequency hopping
- Programmable FIR equalizer at DUC input or DAC input
- Direct digital synthesis (DDS) functions
- Four piecewise linear waveform generators
- 16 Prestored waveforms
- 256 Total vectors
- Automatic or synchronous external triggers
- Frequency, amplitude, phase interface streaming
- Four piecewise linear waveform generators
- JESD204C Interface
- 16 Lanes at up to 32.5Gbps
- Class C-S, subclass-1 compatible
- Automatic clock and SYSREF calibration and tracking
The DAC39RF20 is a single and dual channel digital-to-analog converter (DAC) with 16-bit resolution. With an external full rate clock, the devices support 22GSPS with single edge sampling modes (NRZ and RF) and 44GSPS in dual edge sampling modes (DES2XL, DES2XH). When using the internal PLL/VCO, the devices support 17GSPS with single edge sampling modes (NRZ and RF) and 34GSPS in dual edge sampling modes (DES2XL, DES2XH). The devices can be used as noninterpolating or interpolating DACs for either direct RF sampling or complex baseband signal generation. The maximum input data rate for two channels is 21GSPS (12-bit resolution) or 15.75GSPS (16-bit resolution). The maximum rate for one channel is 22GSPS (16-bit resolution). The device can generate signals greater than 10GHz bandwidth at frequencies exceeding 20GHz, enabling direct sampling through Ku band.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DAC39RF20: 22GSPS or 44GSPS, 16-Bit, Single and Dual Channel, Multi-Nyquist Digital-to-Analog Converter (DAC) with JESD204C Interface datasheet (Rev. A) | PDF | HTML | 2026/4/21 |
設計與開發
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DAC39RF20EVM — DAC39RF20 評估模組
DAC39RF20EVM 是一款用於評估德州儀器的 DAC39RF20 系列數位轉類比轉換器 (DAC) 的評估模組 (EVM)。EVM 可用於評估高達 22GSPS 取樣率的 DAC 性能。EVM 的設計目的是與基於現場可編程閘極陣列 (FPGA) 的模式產生器卡 TSW14J59EVM 搭配使用。EVM 上提供的 FPGA 夾層介面卡 (FMC) 連接器也使得將 DAC 與第三方供應商的 FPGA 開發板連接成為可能。此外，還提供了一個易於使用的軟體介面 GUI，可透過序列週邊設備介面 (SPI) 控制 DAC 和板載 LMK04828 時脈晶片。
DAC39RF10-OUTPUT-FULLSCALE-CALC — Output fullscale calculation tool for DAC39RFxx.
DAC39RF20-LATENCY-CALC — DAC39RF20 Latency Calculator
DAC39RF2X-DC-INTERFACE-CALC — DAC39RF2X DC Interface calculator
DAC39RF2X-SYSREF-FREQ-CALC — DAC39RF2X SYSREF Frequency Calculator
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| FCCSP (ANH) | 289 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。