Overview
The DAC5672AIPFB is a high-performance, dual-channel, 14-bit digital-to-analog converter (DAC) produced by Texas Instruments. This monolithic device operates at update rates of up to 275 MSPS, making it suitable for high-speed applications such as I/Q baseband or direct IF communication. The DAC5672A features an on-chip voltage reference, high spurious-free dynamic range (SFDR), and excellent third-order two-tone intermodulation (IMD3) performance. It is designed for use in various communication systems, medical instrumentation, and arbitrary waveform generators, among other applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14-bit | |
| Update Rate | Up to 275 MSPS | |
| Supply Voltage | 3 V to 3.6 V | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | 48-Pin Thin-Quad Flat Pack (TQFP) | |
| Power Consumption | 330 mW (active), 9 mW (power-down mode) | mW |
| Spurious-Free Dynamic Range (SFDR) | 84 dBc at 5 MHz | dBc |
| Third-Order Two-Tone Intermodulation (IMD3) | 79 dBc at 15.1 MHz and 16.1 MHz | dBc |
| WCDMA Adjacent Channel Leakage Ratio (ACLR) | 78 dB at Baseband, 73 dB at 30.72 MHz | dB |
| On-Chip Reference Voltage | 1.2 V | V |
Key Features
- Dual-channel, 14-bit digital-to-analog conversion
- High update rate of up to 275 MSPS
- Single-supply operation: 3 V to 3.6 V
- High SFDR: 84 dBc at 5 MHz
- High IMD3: 79 dBc at 15.1 MHz and 16.1 MHz
- WCDMA ACLR: 78 dB at Baseband, 73 dB at 30.72 MHz
- Independent or single resistor gain control
- Dual or interleaved data mode
- On-chip 1.2-V temperature-compensated reference voltage
- Low power consumption: 330 mW (active), 9 mW (power-down mode)
- High-impedance, differential-current output
- External resistors for scaling full-scale output current (2 mA to 20 mA)
Applications
- Cellular Base Transceiver Station Transmit Channel: CDMA, W-CDMA, CDMA2000, IS-95, TDMA: GSM, IS-136, EDGE, and UWC-136
- Medical and Test Instrumentation
- Arbitrary Waveform Generators (ARB)
- Direct Digital Synthesis (DDS)
- Cable Modem Termination System (CMTS)
Q & A
- What is the resolution and update rate of the DAC5672A?
The DAC5672A has a 14-bit resolution and an update rate of up to 275 MSPS.
- What is the operating temperature range of the DAC5672A?
The DAC5672A operates over an industrial temperature range of -40°C to 85°C.
- What is the power consumption of the DAC5672A in active and power-down modes?
The power consumption is 330 mW in active mode and 9 mW in power-down mode.
- What is the SFDR and IMD3 performance of the DAC5672A?
The SFDR is 84 dBc at 5 MHz, and the IMD3 is 79 dBc at 15.1 MHz and 16.1 MHz.
- Does the DAC5672A have an on-chip reference voltage?
- What are the typical applications of the DAC5672A?
The DAC5672A is used in cellular base transceiver stations, medical and test instrumentation, arbitrary waveform generators, direct digital synthesis, and cable modem termination systems.
- What package type is the DAC5672A available in?
The DAC5672A is available in a 48-pin Thin-Quad Flat Pack (TQFP) package.
- Can the DAC5672A operate in dual or interleaved data modes?
- How can the full-scale output current be scaled in the DAC5672A?
The full-scale output current can be scaled using external resistors, typically between 2 mA and 20 mA.
- Is the DAC5672A pin compatible with other DAC models?
