Overview
The DAC5674IPHP is a 14-bit resolution high-speed digital-to-analog converter (DAC) produced by Texas Instruments. It is designed for high-speed digital data transmission in wired and wireless communication systems, as well as for high-frequency direct-digital synthesis (DDS) and waveform reconstruction in test and measurement applications. The device features an integrated 4x-interpolation filter, an on-board clock multiplier, and an on-chip voltage reference. This configuration allows for efficient and high-quality signal processing, particularly in reducing system complexity and costs in heterodyne transmitter architectures.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 14 bits |
| Maximum Input Data Rate | 200 MSPS |
| Maximum Update Rate DAC | 400 MSPS |
| SFDR Over Full First Nyquist Zone | 76 dBc at Fout = 21 MHz |
| 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 |
| Supply Voltages | 1.8 V (Digital), 3.3 V (Analog) |
| Power Dissipation | 435 mW at 400 MSPS |
| Package | 48-Pin HTQFP |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- Selectable 2x or 4x interpolation filter with linear phase and 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 temperature compensated bandgap reference.
- 1.8-V and 3.3-V CMOS compatible interface.
- Low passband ripple (0.05 dB) and high stopband attenuation (80 dB).
- SLEEP mode for reduced power consumption (approximately 10 mW).
- Differential transformer coupled output with 50-ohm doubly terminated load support.
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 DAC5674IPHP?
The DAC5674IPHP has a 14-bit resolution.
- What is the maximum input data rate of the DAC5674IPHP?
The maximum input data rate is 200 MSPS.
- What is the maximum update rate of the DAC5674IPHP?
The maximum update rate is 400 MSPS.
- What are the key applications of the DAC5674IPHP?
The key applications include cellular base transceiver stations, CDMA, TDMA, test and measurement, direct digital synthesis (DDS), and cable modem termination systems.
- What type of interpolation filter does the DAC5674IPHP have?
The DAC5674IPHP has a selectable 2x or 4x interpolation filter.
- What is the power dissipation of the DAC5674IPHP at maximum operating conditions?
The power dissipation is 435 mW at 400 MSPS.
- What is the operating temperature range of the DAC5674IPHP?
The operating temperature range is -40°C to 85°C.
- Does the DAC5674IPHP support differential current outputs?
Yes, it supports differential scalable current outputs from 2 mA to 20 mA.
- Can the DAC5674IPHP be used in low-power mode?
Yes, it has a SLEEP mode that reduces the standby power to approximately 10 mW.
- What type of package does the DAC5674IPHP come in?
The DAC5674IPHP comes in a 48-Pin HTQFP package.
