Overview
The DAC5674IPHPRG4, produced by Texas Instruments, is a high-performance 14-bit digital-to-analog converter (DAC) designed for high-speed digital data transmission in various communication and test and measurement applications. This device features an integrated 4× interpolation filter, an onboard clock multiplier, and an on-chip voltage reference. It is optimized for use in cellular base transceiver stations, arbitrary waveform generation, direct digital synthesis (DDS), and cable modem termination systems. The DAC5674 operates with an analog supply voltage of 3.3 V and a digital supply voltage of 1.8 V, making it suitable for a wide range of applications requiring high-speed and high-precision analog output.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 bits | |
| Maximum Output Update Rate | 400 MSPS | |
| Full-Scale Output Current | 2 mA to 20 mA | |
| Output Compliance Range | -1 V to 1.25 V | |
| Output Resistance | 300 kΩ | |
| Output Capacitance | 5 pF | |
| Reference Voltage | 1.14 V to 1.26 V | |
| Power Dissipation | 435 mW to 550 mW | |
| Operating Temperature Range | -40°C to 85°C | |
| Package Type | 48-Pin HTQFP PowerPAD |
Key Features
- Integrated 4× interpolation filter, implemented as a cascade of two 2× interpolation filters, allowing for low-pass or high-pass response configurations.
- Onboard clock multiplier with PLL, ensuring optimal jitter performance and supporting sine wave clock input signals.
- On-chip 1.2-V temperature-compensated band-gap reference and control amplifier for adjustable full-scale output current.
- Differential current-output supporting both single-ended and differential applications, with direct feed to the load without additional external output buffers.
- SLEEP mode reducing standby power to approximately 10 mW for optimized power consumption.
- CMOS compatible digital I/Os with 1.8-V and 3.3-V supply voltages.
Applications
- Cellular Base Transceiver Station Transmit Channel: Supports 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.
- High-frequency waveform reconstruction in various communication systems.
Q & A
- What is the resolution of the DAC5674?
The DAC5674 has a resolution of 14 bits.
- What is the maximum output update rate of the DAC5674?
The maximum output update rate is 400 MSPS.
- What is the range of the full-scale output current?
The full-scale output current can be adjusted from 2 mA to 20 mA.
- What type of interpolation filter does the DAC5674 feature?
The DAC5674 features an integrated 4× interpolation filter, implemented as a cascade of two 2× interpolation filters.
- What is the operating temperature range of the DAC5674?
The operating temperature range is -40°C to 85°C.
- What package type is the DAC5674 available in?
The DAC5674 is available in a 48-Pin HTQFP PowerPAD package.
- Does the DAC5674 support differential output?
Yes, the DAC5674 supports differential current-output.
- How does the DAC5674 reduce power consumption?
The DAC5674 features a SLEEP mode that reduces standby power to approximately 10 mW.
- What are some of the key applications of the DAC5674?
Key applications include cellular base transceiver stations, test and measurement, and cable modem termination systems.
- Can the DAC5674 be used with external reference voltage?
Yes, the DAC5674 allows for an external reference voltage to be applied for maximum flexibility.
