Overview
The AD9788BSVZ is a high-performance, 16-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD9785/AD9787/AD9788 family, which includes 12-bit, 14-bit, and 16-bit DACs, respectively. The AD9788BSVZ is designed to provide a sample rate of 800 MSPS, enabling multicarrier generation up to the Nyquist frequency. It is optimized for direct conversion transmit applications, including complex digital modulation, and features gain, phase, and offset compensation.
The device is manufactured on a 0.18 μm CMOS process and operates from 1.8 V and 3.3 V supplies. It is packaged in a 100-lead TQFP (Thin Quad Flat Package) with an exposed pad, ensuring efficient heat dissipation and compact design.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 | - | - | Bits |
| Differential Nonlinearity (DNL) | ±0.2 | ±0.5 | ±2.1 | LSB |
| Integral Nonlinearity (INL) | ±0.3 | ±1.0 | ±3.7 | LSB |
| Offset Error | -0.001 | 0 | +0.001 | % FSR |
| Gain Error (with Internal Reference) | ±2 | - | - | % FSR |
| Full-Scale Output Current | 8.66 | 20.2 | 31.66 | mA |
| Output Compliance Range | -1.0 | - | +1.0 | V |
| Output Resistance | 10 | - | - | MΩ |
| Maximum Clock Rate | - | - | 800 MHz | - |
| Operating Range | -40 | - | +85 | °C |
Key Features
- Auxiliary DACs for I and Q gain matching and offset control
- Programmable I and Q phase compensation
- Internal digital upconversion capability
- Multiple chip synchronization interface
- High-performance, low-noise PLL clock multiplier
- Digital inverse sinc filter
- Full-scale output current programmable over a range of 10 mA to 30 mA
- Serial peripheral interface (SPI) for programming and readback of internal parameters
- Optimized to interface seamlessly with analog quadrature modulators, such as the ADL5375 family
Applications
- Wireless infrastructure: W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM
- Digital high or low IF synthesis
- Transmit diversity
- Wideband communications: LMDS/MMDS, point-to-point
Q & A
- What is the resolution of the AD9788BSVZ DAC?
The AD9788BSVZ is a 16-bit DAC.
- What is the maximum sample rate of the AD9788BSVZ?
The maximum sample rate is 800 MSPS.
- What is the operating voltage range for the AD9788BSVZ?
The device operates from 1.8 V and 3.3 V supplies.
- What is the package type of the AD9788BSVZ?
The device is packaged in a 100-lead TQFP with an exposed pad.
- What are the key applications of the AD9788BSVZ?
Key applications include wireless infrastructure, digital high or low IF synthesis, transmit diversity, and wideband communications.
- Does the AD9788BSVZ support multiple chip synchronization?
Yes, it includes a multiple chip synchronization interface.
- What is the purpose of the auxiliary DACs in the AD9788BSVZ?
The auxiliary DACs are used for I and Q gain matching and offset control.
- Can the full-scale output current of the AD9788BSVZ be programmed?
Yes, the full-scale output current can be programmed over a range of 10 mA to 30 mA.
- What interface is used for programming and readback of internal parameters in the AD9788BSVZ?
A serial peripheral interface (SPI) is used for programming and readback of internal parameters.
- Is the AD9788BSVZ optimized for use with specific analog quadrature modulators?
Yes, it is optimized to interface seamlessly with analog quadrature modulators, such as the ADL5375 family from Analog Devices.
