CBM94DA67
High-performance 14-bit DAC with 250MSPS update rate, 80dB SFDR, and LVDS input for communications and waveform generation.
Product Overview
Description
The CBM94DA67 is a high-performance 14-bit digital-to-analog converter designed for communications and waveform generation applications. It features a current-steering architecture achieving 250MSPS update rate with excellent dynamic performance.
With 80dB SFDR and 72dB SNR, the CBM94DA67 delivers high-fidelity signal reconstruction for transmitters and arbitrary waveform generators. The differential current output provides flexible interfacing to various loads.
The DAC accepts LVDS digital inputs and provides differential current output. Operating from 1.8V and 3.3V supplies, it consumes only 350mW typical power. The device is available in a compact 7x7mm QFN package.
Product Series
CBM
Primary Application
4G/5G base station transmitters
Key Features
- High 250MSPS update rate
- Excellent 80dB SFDR performance
- Low 350mW power consumption
- Differential current output
- LVDS digital inputs
- Compact 7x7mm QFN package
- Industrial temperature range
Specifications
| Resolution | 14-bit |
|---|---|
| Update Rate | 250 MSPS |
| SFDR | 80 dBc @ 70MHz |
| SNR | 72 dB @ 70MHz |
| Power Consumption | 350 mW |
| Output | Differential current |
| Interface | LVDS |
| Package | 7x7mm QFN-48 |
| Temperature Range | -40°C to +85°C |
Applications
4G/5G base station transmitters
Electronic system design
Wideband communications
Communication and interface
Arbitrary waveform generators
Electronic system design
Direct digital synthesis
Electronic system design
Medical imaging
Medical electronics
Test and measurement
Data acquisition and conversion
FAE Expert Insights
"The CBM94DA67 is an excellent DAC that pairs perfectly with the CBM94AD67 ADC for complete transceiver designs. The 80dB SFDR is impressive for this performance class and enables clean signal generation for communications. I particularly appreciate the differential current output which provides flexibility in interfacing to various loads and filters. The LVDS input integrates well with FPGA-based systems. For best SFDR performance, ensure clean power supplies and proper clocking. The 350mW power consumption is competitive. For cost-sensitive communication designs requiring high-speed DACs, this device offers excellent value."
High-performance DAC ideal for communications transmitters
— Michael Chen, BeiLuo
Frequently Asked Questions
What is the output format of CBM94DA67?
The CBM94DA67 provides differential current output: (1) Output current - 20mA full-scale nominal; (2) Compliance voltage - up to 1.25V; (3) Differential output - IOUTP and IOUTN pins; (4) Load options - resistive load to ground or center-tapped transformer; (5) Reconstruction filter - external filter required for smoothing; (6) Output impedance - high impedance current source. The current output provides flexibility in interfacing to various loads and enables excellent dynamic performance.
Use resistive load or transformer coupling based on application requirements.