Overview
The DAC904E/2K5 is a high-speed Digital-to-Analog Converter (DAC) from Texas Instruments, offering a 14-bit resolution within the family of high-performance converters. This DAC is designed to provide excellent dynamic performance, making it suitable for a variety of applications. It features pin compatibility with other family members, such as the DAC908, DAC900, and DAC902, which offer 8-, 10-, and 12-bit resolutions, respectively. The DAC904E/2K5 supports update rates in excess of 165MSPS and is particularly optimized for high Spurious-Free Dynamic Range (SFDR) for both single-tone and multi-tone signals, which is crucial for communication system transmit signal paths.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 14-bit |
| Update Rate | Up to 165MSPS |
| Supply Voltage | +2.7V to +5.5V |
| Power Consumption | 170mW at +5V, 45mW in power-down mode |
| Output Current | Nominal range of 20mA, adjustable from 2-20mA |
| Output Compliance | Up to 1.25V |
| Output Impedance | 200kΩ |
| Package | SO-28, TSSOP-28 |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- SINGLE +5V OR +3V OPERATION
- HIGH SFDR: 20MHz Output at 100MSPS: 64dBc
- LOW GLITCH: 3pV-s
- LOW POWER: 170mW at +5V
- INTERNAL REFERENCE: Optional external reference, adjustable full-scale range, and multiplying option
- Differential or single-ended analog signal interface
- Edge-triggered input latches
- Compatible with +3V and +5V CMOS logic families
Applications
- Communication Transmit Channels: WLL, Cellular Base Station, Digital Microwave Links, Cable Modems
- Waveform Generation: Direct Digital Synthesis (DDS), Arbitrary Waveform Generation (ARB)
- Medical/Ultrasound
- High-Speed Instrumentation and Control
- Video, Digital TV
Q & A
- What is the resolution of the DAC904E/2K5?
The DAC904E/2K5 has a 14-bit resolution. - What is the maximum update rate of the DAC904E/2K5?
The DAC904E/2K5 supports update rates in excess of 165MSPS. - What is the operating voltage range of the DAC904E/2K5?
The DAC904E/2K5 can operate on a single supply voltage from +2.7V to +5.5V. - How much power does the DAC904E/2K5 consume?
The DAC904E/2K5 consumes 170mW at +5V and 45mW in power-down mode. - What is the output current range of the DAC904E/2K5?
The output current range is nominal at 20mA but can be adjusted from 2-20mA. - What are the package options for the DAC904E/2K5?
The DAC904E/2K5 is available in SO-28 and TSSOP-28 packages. - What is the operating temperature range of the DAC904E/2K5?
The operating temperature range is -40°C to 85°C. - Can the DAC904E/2K5 be used in differential or single-ended configurations?
Yes, the DAC904E/2K5 supports both differential and single-ended analog signal interfaces. - Is the DAC904E/2K5 compatible with different logic families?
Yes, it is compatible with both +3V and +5V CMOS logic families. - What are some common applications of the DAC904E/2K5?
Common applications include communication transmit channels, waveform generation, medical/ultrasound, high-speed instrumentation and control, and video/digital TV.
