Overview
The DAC3174IRGCT is a dual-channel, 14-bit, 500-MSPS digital-to-analog converter (DAC) produced by Texas Instruments. This device is designed for high-speed and high-precision applications, utilizing a 14-bit low-voltage differential signaling (LVDS) digital bus. It features one or two independent dual-data rate (DDR) data clocks, providing flexibility in data input from different sources. The DAC3174IRGCT is pin-compatible with other Texas Instruments DAC models such as the DAC3164 and DAC3154, and it supports chip-to-chip synchronization through its FIFO input and output pointers.
The device is packaged in a 64-pin VQFN (9 mm × 9 mm) with an exposed pad, and it operates over the full industrial temperature range of –40°C to +85°C. The DAC outputs are current-sourcing with a compliance range of –0.5 V to +1 V.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution | Number of bits | 14 bits |
| Maximum Sample Rate | Maximum sampling frequency | 500 MSPS |
| Data Interface | Type of data interface | LVDS, single or dual DDR data clocks |
| Power Dissipation | Typical power consumption | 460 mW |
| Spectral Performance (20 MHz IF) | SNR and SFDR | SNR: 76 dBFS, SFDR: 78 dBc |
| Output Settling Time | Time to settle to 0.1% | 11 ns |
| Output Propagation Delay | Delay excluding digital latency | 2 ns |
| Output Rise Time | Time from 10% to 90% of full scale | 200 ps |
| Package | Type and size of package | 64-pin VQFN (9 mm × 9 mm) |
| Operating Temperature | Temperature range for operation | –40°C to +85°C |
Key Features
- Dual-channel, 14-bit resolution with a maximum sample rate of 500 MSPS.
- LVDS digital bus with single or dual DDR data clocks for flexible data input.
- Internal FIFO for independent data and sample clocks, with synchronization capabilities across multiple devices.
- Current-sourcing DAC outputs with a compliance range of –0.5 V to +1 V.
- Pin compatibility with other Texas Instruments DAC models like DAC3164 and DAC3154.
- Chip-to-chip synchronization through FIFO input and output pointers.
- Low power dissipation of 460 mW.
- High spectral performance with SNR of 76 dBFS and SFDR of 78 dBc at 20 MHz IF.
Applications
- Multi-carrier, multi-mode cellular infrastructure base stations.
- Radar systems.
- Signal intelligence applications.
- Software-defined radios.
- Test and measurement instrumentation.
Q & A
- What is the resolution and maximum sample rate of the DAC3174IRGCT?
The DAC3174IRGCT has a 14-bit resolution and a maximum sample rate of 500 MSPS.
- What type of data interface does the DAC3174IRGCT use?
The DAC3174IRGCT uses an LVDS digital bus with single or dual DDR data clocks.
- What is the power dissipation of the DAC3174IRGCT?
The typical power dissipation of the DAC3174IRGCT is 460 mW.
- What are the spectral performance metrics of the DAC3174IRGCT at 20 MHz IF?
The DAC3174IRGCT has an SNR of 76 dBFS and an SFDR of 78 dBc at 20 MHz IF.
- What is the output settling time of the DAC3174IRGCT?
The output settling time to 0.1% is 11 ns.
- What is the package type and size of the DAC3174IRGCT?
The DAC3174IRGCT is packaged in a 64-pin VQFN (9 mm × 9 mm) with an exposed pad.
- What is the operating temperature range of the DAC3174IRGCT?
The operating temperature range is –40°C to +85°C.
- Is the DAC3174IRGCT RoHS compliant?
- What are some typical applications of the DAC3174IRGCT?
Typical applications include multi-carrier cellular base stations, radar, signal intelligence, software-defined radios, and test and measurement instrumentation.
- Is the DAC3174IRGCT pin-compatible with other Texas Instruments DAC models?
