Overview
The AD9146BCPZRL is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the TxDAC+ family and is designed for high-performance applications requiring direct conversion transmit capabilities. The AD9146 offers a sample rate of 1230 MSPS, enabling multicarrier generation up to the Nyquist frequency. It is optimized for complex digital modulation and includes features such as gain and offset compensation, making it ideal for various communication and signal processing systems.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Resolution | 16-bit | |
| Sample Rate | 1230 MSPS | |
| Full-Scale Output Current | 8.7 mA to 31.7 mA | Programmable |
| Supply Voltages | AVDD33 = 3.3 V, DVDD18 = 1.8 V, CVDD18 = 1.8 V | |
| Package | 48-Lead LFCSP (7mm x 7mm x 0.75mm w/ EP) | |
| Differential Nonlinearity (DNL) | Specified in datasheet | TMIN to TMAX, IFS = 20 mA |
| Offset Error | Specified in datasheet | TMIN to TMAX, IFS = 20 mA |
Key Features
- Dual DAC structure for easy interface with common quadrature modulators, ideal for single sideband (SSB) transmitters.
- High dynamic range and low distortion, making it suitable for high-performance communication systems.
- Gain and offset compensation for precise control over output signals.
- A 3-wire serial port interface for programming and readback of internal parameters.
- Support for both MSB first and LSB first data formats through the serial port.
- LVDS data ports that can accept data in byte and nibble formats.
- A 2-channel, 16-bit wide, eight-word deep FIFO to relax the timing relationship between the data source and the DAC.
Applications
- Direct conversion transmit applications in wireless communication systems.
- Complex digital modulation schemes such as QAM, QPSK, and OFDM.
- High-performance signal processing systems requiring high dynamic range and low distortion.
- SSB transmitters and other communication equipment where precise control over output signals is necessary.
Q & A
- What is the sample rate of the AD9146BCPZRL?
The AD9146BCPZRL has a sample rate of 1230 MSPS.
- What is the resolution of the AD9146BCPZRL?
The AD9146BCPZRL is a 16-bit DAC.
- What are the supply voltages for the AD9146BCPZRL?
The supply voltages are AVDD33 = 3.3 V, DVDD18 = 1.8 V, and CVDD18 = 1.8 V.
- How is the full-scale output current of the AD9146BCPZRL controlled?
The full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA.
- What type of package does the AD9146BCPZRL come in?
The AD9146BCPZRL comes in a 48-Lead LFCSP package.
- Does the AD9146BCPZRL support both MSB first and LSB first data formats?
- What is the purpose of the FIFO in the AD9146BCPZRL?
The FIFO acts as a buffer to absorb timing variations between the data source and the DAC, increasing the timing budget of the interface.
- Can the AD9146BCPZRL be used with analog quadrature modulators?
- What is the significance of the exposed pad (EPAD) in the AD9146BCPZRL package?
The exposed pad (EPAD) must be soldered to the ground plane (AVSS) to provide an electrical, thermal, and mechanical connection to the board.
- What are some common applications of the AD9146BCPZRL?
