Overview
The DAC5674IPHPR is a high-speed digital-to-analog converter (DAC) produced by Texas Instruments. It features a 14-bit resolution and is integrated with a 4x-interpolation filter, an on-board clock multiplier, and an on-chip voltage reference. This device is designed for high-speed digital data transmission in both wired and wireless communication systems, as well as for high-frequency direct-digital synthesis (DDS) and waveform reconstruction in test and measurement applications.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 14-bit |
| Maximum Input Data Rate | 200 MSPS |
| Maximum Update Rate | 400 MSPS |
| Spurious Free Dynamic Range (SFDR) | 76 dBc over full first Nyquist zone |
| ACPR W-CDMA at 15.36 MHz IF | 74 dBc |
| ACPR W-CDMA at 30.72 MHz IF | 69 dBc |
| Interpolation Filter | Selectable 2x or 4x |
| Passband Ripple | 0.05 dB |
| Stopband Attenuation | 80 dB |
| Stopband Transition | 0.4-0.6 Fdata |
| Clock Multiplier | On-chip 2x/4x PLL, PLL Bypass Mode |
| Output Current | Differential Scalable Current Outputs: 2 mA to 20 mA |
| Supply Voltages | 1.8-V Digital, 3.3-V Analog |
| Interface Compatibility | 1.8/3.3-V CMOS Compatible |
| Power Dissipation | 435 mW at 400 MSPS |
| Package | 48-Pin HTQFP (PHP) |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- Selectable 2x or 4x interpolation filter with linear phase response
- Interpolation filters configurable in either low-pass or high-pass mode
- On-chip 2x/4x PLL clock multiplier with PLL bypass mode
- Differential scalable current outputs: 2 mA to 20 mA
- On-chip 1.2-V reference
- 1.8-V digital and 3.3-V analog supply operation
- 1.8/3.3-V CMOS compatible interface
- Excellent SFDR and ACPR performance for multicarrier transmission
- Support for direct digital synthesis (DDS) and arbitrary waveform generation
Applications
- Cellular Base Transceiver Station Transmit Channel
- CDMA: W-CDMA, CDMA2000, IS-95
- TDMA: GSM, IS-136, EDGE/UWC-136
- Test and Measurement: Arbitrary Waveform Generation
- Direct Digital Synthesis (DDS)
- Cable Modem Termination System
Q & A
- What is the resolution of the DAC5674?
The DAC5674 has a 14-bit resolution.
- What is the maximum input data rate of the DAC5674?
The maximum input data rate is 200 MSPS.
- What is the maximum update rate of the DAC5674?
The maximum update rate is 400 MSPS.
- What is the SFDR performance of the DAC5674?
The SFDR is 76 dBc over the full first Nyquist zone.
- What types of interpolation filters does the DAC5674 support?
The DAC5674 supports selectable 2x or 4x interpolation filters.
- Can the interpolation filters be configured in different modes?
Yes, the interpolation filters can be configured in either low-pass or high-pass mode.
- What is the power dissipation of the DAC5674 at 400 MSPS?
The power dissipation is 435 mW at 400 MSPS.
- What are the supply voltage requirements for the DAC5674?
The DAC5674 operates from 1.8-V digital and 3.3-V analog supply voltages.
- What is the operating temperature range of the DAC5674?
The operating temperature range is -40°C to 85°C.
- What are some of the key applications of the DAC5674?
Key applications include cellular base transceiver stations, CDMA and TDMA systems, test and measurement, and direct digital synthesis (DDS).
