AD9767ASTZ

The AD9767ASTZ is a high-performance, dual-port, high-speed, 2-channel, 14-bit CMOS digital-to-analog converter (DAC). It integrates two high-quality TxDAC+® cores, a voltage reference, and digital interface circuitry into a small 48-lead LQFP package, providing exceptional AC and DC performance while supporting update rates of up to 125 MSPS.

Key features of the AD9767ASTZ include:

1. Dual-Channel DAC: The device offers two independent DAC channels, allowing for flexible transmission of I and Q information in communication applications.
2. High Resolution and Speed: With 14-bit resolution and a maximum update rate of 125 MSPS, the AD9767ASTZ is capable of handling high-speed, high-precision signal conversion.
3. Excellent Performance: The DAC exhibits outstanding SFDR (to Nyquist frequency) of 75 dBc at a 5 MHz output, as well as excellent gain and offset matching of 0.1%.
4. Independent Gain Control: The GAINCTRL pin allows for two modes of setting the full-scale current (IOUTFS) of the two DACs. This can be done either with two external resistors (for independent setting of each DAC’s IOUTFS) or with a single external resistor (for setting both DACs’ IOUTFS together).
5. Differential Current Output: Each DAC provides a differential current output, supporting both single-ended and differential applications.
6. Low Power Consumption: The AD9767ASTZ operates on a single 3.3 V to 5 V power supply and consumes 380 mW of power. Additionally, it features a power-saving mode that reduces power consumption to 50 mW.
7. Flexible Data Interface: The device has a flexible dual-port interface that allows for data input in either a dual-port or interleaved mode. In interleaved mode, the input data stream is demuxed into original I and Q data, which are then latched and converted by the two DACs, updating at half the input data rate.
8. Built-in Reference Voltage Source: The AD9767ASTZ includes a 1.20 V temperature-compensated bandgap reference voltage source.

Applications for the AD9767ASTZ include communication base stations, digital synthesis, quadrature modulation, and 3D ultrasound imaging. Its compact size, high performance, and low power consumption make it an ideal choice for these and other demanding applications.