Overview
The DAC38J84IAAVR, produced by Texas Instruments, is a high-performance, low-power, 16-bit, quad-channel digital-to-analog converter (DAC) with a JESD204B interface. This device is part of the DAC37J84/DAC38J84 family and is notable for its high sample rates and advanced features that simplify complex transmit architectures. The DAC38J84 supports a maximum sample rate of 2.5 GSPS, making it one of the fastest 16-bit DACs in the industry. It is designed for applications requiring high-speed data conversion and precise signal generation.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16-Bit |
| Maximum Sample Rate | 2.5 GSPS |
| Maximum Input Data Rate | 1.23 GSPS |
| Interface | JESD204B |
| Serial Input Lanes | 8 JESD204B lanes |
| Maximum Bit Rate per Lane | 12.5 Gbps |
| Multi-DAC Synchronization | Subclass 1 |
| PLL | On-Chip Very Low Jitter PLL |
| Interpolation | Selectable 1x - 16x |
| Complex Mixers | Independent Complex Mixers with 48-bit NCO |
| Package | 10x10mm, 144-Ball Flip-Chip BGA |
| Power Dissipation | 1.8W at 2.5 GSPS |
Key Features
- Fully bypassable 2x to 16x digital interpolation filters with over 90 dB of stop-band attenuation.
- Independent complex mixers with 48-bit Numerically Controlled Oscillator (NCO) for flexible and accurate carrier placement.
- Wideband Digital Quadrature Modulator Correction (QMC) and Group Delay Correction (QDC) for complete IQ compensation.
- Sinx/x Correction Filters and Fractional Sample Group Delay Correction.
- Multi-Band Mode: Digital Summation of Independent Complex Signals.
- 3/4-Wire Serial Control Bus (SPI): 1.5V – 1.8V.
- Integrated Temperature Sensor and JTAG Boundary Scan.
- Programmable Power Amplifier (PA) protection mechanism.
Applications
- Cellular Base Stations
- Diversity Transmit
- Wideband Communications
- Direct Digital Synthesis (DDS) instruments
- Millimeter/Microwave Backhaul
- Automated Test Equipment
- Cable Infrastructure
Q & A
- What is the maximum sample rate of the DAC38J84?
The maximum sample rate of the DAC38J84 is 2.5 GSPS.
- What interface does the DAC38J84 use?
The DAC38J84 uses the JESD204B interface.
- How many serial input lanes does the DAC38J84 have?
The DAC38J84 has 8 JESD204B serial input lanes.
- What is the maximum bit rate per lane for the DAC38J84?
The maximum bit rate per lane is 12.5 Gbps.
- Does the DAC38J84 support multi-DAC synchronization?
- What type of PLL does the DAC38J84 have?
The DAC38J84 has an on-chip very low jitter PLL.
- What is the interpolation range of the DAC38J84?
The interpolation range is selectable from 1x to 16x.
- Does the DAC38J84 have integrated temperature sensing?
- What is the package type and size of the DAC38J84?
The package is a 10x10mm, 144-Ball Flip-Chip BGA.
- What are some common applications of the DAC38J84?
Common applications include cellular base stations, diversity transmit, wideband communications, and automated test equipment.
