Overview
The AD9146BCPZ 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 optimized for direct conversion transmit applications. It offers a sample rate of 1230 MSPS, enabling multicarrier generation up to the Nyquist frequency. The AD9146 is designed to support complex digital modulation and includes features such as gain and offset compensation, making it suitable for a variety of high-performance communication systems.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 16 |
| Number of D/A Converters | 2 |
| Sample Rate | 1230 MSPS |
| Output Type | Current - Unbuffered |
| Differential Output | Yes |
| Settling Time | 20 ns (Typ) |
| Supply Voltage | AVDD33 = 3.3 V, DVDD18 = 1.8 V, CVDD18 = 1.8 V |
| Operating Temperature | -40°C to +85°C |
| Package Type | 48-Lead LFCSP (7mm x 7mm x 0.75mm w/ EP) |
Key Features
- Optimized for direct conversion transmit applications, including complex digital modulation.
- Gain and offset compensation.
- Outputs optimized to interface seamlessly with analog quadrature modulators.
- 3-wire serial port interface for programming and readback of internal parameters.
- Full-scale output current programmable over a range of 8.7 mA to 31.7 mA.
- LVDS data port supporting byte and nibble formats.
- 2-channel, 16-bit wide, eight-word deep FIFO to relax timing relationships between data arrival and DAC data rate clock.
Applications
- Direct conversion transmit applications in wireless communication systems.
- Complex digital modulation schemes.
- Analog quadrature modulation systems.
- High-performance communication systems requiring high dynamic range and precision.
- Wireless infrastructure, including base stations and repeaters.
Q & A
- What is the sample rate of the AD9146BCPZ?
The AD9146BCPZ has a sample rate of 1230 MSPS.
- How many bits does the AD9146BCPZ support?
The AD9146BCPZ is a 16-bit DAC.
- What type of output does the AD9146BCPZ provide?
The AD9146BCPZ provides current - unbuffered output.
- What is the settling time of the AD9146BCPZ?
The settling time of the AD9146BCPZ is typically 20 ns.
- What is the operating temperature range of the AD9146BCPZ?
The operating temperature range is -40°C to +85°C.
- What package type does the AD9146BCPZ come in?
The AD9146BCPZ comes in a 48-Lead LFCSP (7mm x 7mm x 0.75mm w/ EP) package.
- Does the AD9146BCPZ support LVDS data ports?
Yes, the AD9146BCPZ supports LVDS data ports in both byte and nibble formats.
- What is the purpose of the FIFO in the AD9146BCPZ?
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 full-scale output current of the AD9146BCPZ be programmed?
Yes, the full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA.
- What is the significance of the 3-wire serial port interface in the AD9146BCPZ?
The 3-wire serial port interface allows for programming and readback of many internal parameters.
