Datasheet for AD9778:
- Manufacturer Part Number : AD9778
- Manufacturer : AD
- Description : Dual 14-Bit, 1 GSPS, Digital-to-Analog Converter
- Series : AD9778
- Reference Price : USD 20.808
- Our Price : We have a better price, contact us by email
- Product Type : High Speed D/A Converters ≥30MSPS
- Function : Standard High Speed D/A Converters
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD9778
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- 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
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 quadrature 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
WCDMA, CDMA2000, TD-SCDMA, WiMax, GSM
Data Sheet, Rev. A, 3/07
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
