AD9778 - Dual 14-Bit, 1 GSPS, Digital-to-Analog Converter

AD9778是AD公司的一款数模转换器 (DAC)产品，AD9778是Dual 14-Bit, 1 GSPS, Digital-to-Analog Converter，本站介绍了AD9778的封装应用图解、特点和优点、功能等，并给出了与AD9778相关的AD元器件型号供参考。

AD9778 - Dual 14-Bit, 1 GSPS, Digital-to-Analog Converter - 数模转换器 (DAC) - 数模转换器 (DAC) - Analog Devices

产品描述

The AD9776/AD9778/AD9779 are dual, 12-/14-/16-bit, high dynamic range, digital-to-analog converters (DACs) that provide a sample rate of 1 GSPS, permitting multicarrier generation up to the Nyquist frequency. They include features optimized for direct conversion transmit applications, including complex digital modulation, and gain and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quad-rature modulators such as the AD8349. A serial peripheral interface (SPI) provides for programming/readback of many internal parameters. Full-scale output current can be programmed over a range of 10 mA to 30 mA. The devices are manufactured on an advanced 0.18 μm CMOS process and operate on 1.8 V and 3.3 V supplies for a total power consumption of 1.0 W. They are enclosed in 100-lead TQFP packages.

Product Highlights

Ultralow noise and intermodulation distortion (IMD) enable high quality synthesis of wideband signals from baseband to high intermediate frequencies.
A proprietary DAC output switching technique enhances dynamic performance.
The current outputs are easily configured for various single-ended or differential circuit topologies.
CMOS data input interface with adjustable set up and hold.
Novel 2×, 4×, and 8× interpolator/coarse complex modulator allows carrier placement anywhere in DAC bandwidth.

Applications

Wireless infrastructure
WCDMA, CDMA2000, TD-SCDMA, WiMax, GSM

Digital high or low IF synthesis

Internal digital upconversion capability

Transmit diversity

Wideband communications: LMDS/MMDS, point-to-point

Data Sheet, Rev. A, 3/07

优势和特点

Low power: 1.0 W @ 1 GSPS, 600 mW @ 500 MSPS, full operating conditions

SFDR = 78 dBc to fOUT = 100 MHz

Single carrier WCDMA ACLR = 79 dBc @ 80 MHz IF

Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 Ω to 50 Ω

Novel 2×, 4×, and 8× interpolator/coarse complex modulator allows carrier placement anywhere in DAC bandwidth

Auxiliary DACs allow control of external VGA and offset control

Multiple chip synchronization interface

High performance, low noise PLL clock multiplier

Digital inverse sinc filter

100-lead, exposed paddle TQFP package

相关的评估套件共有1个

AD-DAC-FMC - AD-DAC-FMC-ADP：

利用AD-DAC-FMC-ADP适配板，ADI公司的所有DPG2兼容型高速DAC评估板都能够用在配备FMC连接器的Xilinx®评估板上。该适配板采用低引脚数(LPC)的FMC连接器，因此能够用在LPC或HPC主机上（例如ML605或SP605）。

有关兼容评估板的列表，请查看数据模式发生器(DPG)高速DAC评估平台页面的“DPG2”信息。

AD-DAC-FMC - 无：

无

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