Overview
The AD9148BBCZRL, produced by Analog Devices Inc., is a quad, 16-bit, high dynamic range digital-to-analog converter (DAC) designed for high-performance applications. This device operates at a sample rate of 1000 MSPS and is optimized for direct conversion transmit applications, including wireless infrastructure and digital high or low IF synthesis. The AD9148 features gain, phase, and offset compensation, making it suitable for interfacing with analog quadrature modulators such as the ADL5371, ADL5372, ADL5373, ADL5374, and ADL5375. The device is packaged in a 196-ball chip scale package ball grid array (CSPBGA) and operates from 1.8 V and 3.3 V supplies, with a total power consumption of 3 W at the maximum sample rate.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16-bit | |
| Sample Rate | 1000 MSPS | |
| Full-Scale Output Current | 8.7 mA to 31.7 mA | |
| Supply Voltages | 1.8 V, 3.3 V | |
| Total Power Consumption | 3 W (at maximum sample rate) | |
| Package Type | 196-ball CSPBGA (12mm x 12mm x 1.3mm) | |
| Operating Temperature Range | -40°C to +85°C | |
| Digital Interface | LVDS, supports 32- or 16-bit bus width | |
| Serial Peripheral Interface (SPI) | Maximum Clock Rate: 40 MHz |
Key Features
- Low noise and intermodulation distortion (IMD) for high-quality synthesis of wideband signals from baseband to high intermediate frequencies.
- A proprietary DAC output switching technique enhances dynamic performance.
- Current outputs easily configured for various single-ended or differential circuit topologies.
- LVDS data input interface includes FIFO to ease input timing.
- Auxiliary DACs for offset control and gain DACs for I and Q gain matching.
- Programmable I and Q phase compensation and digital gain control.
- On-chip fine complex NCO allows carrier placement anywhere in DAC bandwidth.
- High-performance, low noise PLL clock multiplier and multiple chip synchronization interface.
Applications
- Wireless infrastructure: LTE, TD-SCDMA, WiMAX, W-CDMA, CDMA2000, GSM.
- MIMO/transmit diversity.
- Digital high or low IF synthesis.
Q & A
- What is the sample rate of the AD9148?
The AD9148 operates at a sample rate of 1000 MSPS.
- What is the resolution of the AD9148?
The AD9148 is a 16-bit DAC.
- What are the supply voltages for the AD9148?
The device operates from 1.8 V and 3.3 V supplies.
- What is the total power consumption of the AD9148 at maximum sample rate?
The total power consumption is 3 W at the maximum sample rate.
- What type of package does the AD9148 come in?
The AD9148 is packaged in a 196-ball CSPBGA (12mm x 12mm x 1.3mm).
- What is the operating temperature range of the AD9148?
The operating temperature range is -40°C to +85°C.
- What type of digital interface does the AD9148 support?
The AD9148 supports LVDS with 32- or 16-bit bus width.
- What is the maximum clock rate of the SPI interface?
The maximum clock rate of the SPI interface is 40 MHz.
- What are some key features of the AD9148?
Key features include low noise and IMD, proprietary DAC output switching technique, and programmable I and Q phase compensation.
- In what applications is the AD9148 typically used?
The AD9148 is typically used in wireless infrastructure, MIMO/transmit diversity, and digital high or low IF synthesis.
