AD9773BSVZ

Digital To Analog Converters Overview

The AD9773BSVZ is a 12-bit, dual-channel digital-to-analog converter (DAC) from Analog Devices, operating at a maximum DAC update rate of 400 MSPS. It features selectable 2×, 4×, or 8× interpolating filters and supports fS/2, fS/4, and fS/8 digital quadrature modulation with image rejection capabilities. The device includes an internal PLL clock multiplier, programmable channel gain and offset adjustment, and a fully compatible SPI interface for register control. Powered by a single 3.3 V supply, it typically dissipates 1.2 W and is housed in an 80-lead thin quad flat package with an exposed pad (TQFP_EP).

Digital To Analog Converters Feature Summary

• 12-bit resolution with 400 MSPS maximum output data rate.
• Selectable 2×, 4×, or 8× interpolation filters to simplify reconstruction filter requirements.
• Digital quadrature modulation and image rejection architecture for simplified transmit chains.
• Internal 1.2 V temperature-compensated band gap voltage reference.

Digital To Analog Converters Applications

• Analog quadrature modulation architectures.
• 3G, multicarrier GSM, TDMA, and CDMA systems.
• Broadband wireless and point-to-point microwave radios.

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'SVZ' against the manufacturer's current ordering guide to confirm package type and RoHS compliance status. Ensure that the required thermal performance is supported by the PCB layout, as the TQFP_EP package relies on soldering the exposed pad to the ground plane for adequate heat dissipation.

Digital To Analog Converters Selection Notes

Select this component when system requirements demand high linearity (SFDR > 70 dBc) and flexible digital upconversion options. The internal interpolation filters reduce baseband processing load, while the programmable gain and offset registers allow for calibration of LO feedthrough and sideband suppression errors in analog modulators.

Digital To Analog Converters Part Context

The AD9773BSVZ belongs to the AD977x family of pin-compatible, high-performance interpolating TxDAC+ converters. This family shares functional block diagrams and software compatibility, allowing designers to scale between different resolutions and speeds within the same package footprint without redesigning the hardware interface.

Digital To Analog Converters Replacement Considerations

The AD9773BSVZ is part of a pin-compatible family. Verify if other members like the AD9775 or AD9777 meet specific resolution or speed requirements while maintaining board compatibility.