Design tool
DAC39RF20-DESIGN — DAC39RF20 Design Resources
Additional design and development resources
DAC39RF20
16-bit, 2-channel, 44GSPS, 20GHz analog BW, RF-sampling digital-to-analog converter
Data sheet
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
- Output frequency range: >18GHz
- Performance at fOUT = 10GHz, DES2xL mode
- Noise floor (small signal): –170dBFS/Hz
- SFDR (-0.1dBFS) : –55dBc
- IMD3 (-7dBFS each tone) : –60dBc
- Additive phase noise, 10kHz offset: -132dBc/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.
Technical documentation
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View all 2 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DAC39RF20: 22GSPS or 44GSPS, 16-bit, Single and Dual Channel, Multi-Nyquist Digital-to-Analog Converter (DAC) with JESD204C Interface datasheet | PDF | HTML | 04 Jun 2025 |
| EVM User's guide | DAC39RF20 Evaluation Module User's Guide | PDF | HTML | 16 Jul 2025 |
Design & development
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Evaluation board
DAC39RF20EVM — DAC39RF20 evaluation module
The DAC39RF20EVM is an evaluation module (EVM) for evaluating the DAC39RF20 family of digital-to-analog converters (DACs) from Texas Instruments. The EVM can be used to evaluate the performance of the DAC up to 22GSPS sampling rate. The EVM is designed to work with the field-programmable gate array (...)
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| FCCSP (ANH) | 289 | Ultra Librarian |
Ordering & quality
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