The AD9776A/AD9778A/AD9779A are dual, 12-/14-/16-bit, with wide dynamic rangeDigital-to-analog converters(DAC)，提供1 GSPS采样速率，允许高至奈奎斯特频率的多载波生成。这些数模转换器已经为直接转换传输应用进行最优化，包括法和(delete)数字复调制、增益与偏移补偿。Digital-to-analog converters输出已进行优化，可以同ADI公司的ADL537x FMOD系列等模拟正交调制器进行无缝接口。串行外设接口(SPI)为许多内部参数提供可编程/回读。满幅输出电流可以在10 mA～30 mA范围进行设置。这些模数转换器是利用先进的0.18µm CMOS工艺制作的，工作电压范围为1.8 V～3.3 V，全部功耗为1.0 W。它们采用100引脚薄型扁平四面封装(TQFP)
Product features
- Ultra-low noise and intermodulation distortion (IMD) for high-quality synthesis of wideband signals from baseband to high IF
- Digital analog-to-digital converter output conversion technology with independent intellectual property rights provides dynamic performance
- Current output configurations can be easily provided for a variety of single-ended or differential current topologies
- CMOS data input interface with adjustable setting and holding
- Novel 2×, 4×, and 8× classifier/coarse integrated regulator allow carrier layout at any bandwidth of the digital-to-analog converter
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- Wireless infrastructure
- WCDMA, CDMA2000, TD-SCDMA, WiMax, GSM
- Digital high IF or low IF synthesis
- Internal digital upconversion capability
- Launch diversity
- Broadband communications: LMDS/MMDS, peer-to-peer
- Datasheet, Rev. PrB, 5/07