AD9778A
PRODUCTIONDual, 14-Bit, 1 GSPS, Digital-to-Analog Converter
- Part Models
- 2
- 1ku List Price
- Starting From $33.39
Part Details
- Low power: 1.0 W @ 1 GSPS, 600 mW @ 500 MSPS, full operating conditions
- Single carrier W-CDMA ACLR = 80 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
The AD9776A/AD9778A/AD9779A are dual, 12-/14-/16-bit, high dynamic range digital-to-analog converters (DACs) that provide a sample rate of 1 GSPS, permitting a multicarrier generation up to the Nyquist frequency. They include features optimized for direct conversion transmission 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 ADL537x FMOD series from Analog Devices, Inc. A 3-wire interface 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 a 100-lead thin quad flat package (TQFP).
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 setup and hold.
- Novel 2×, 4×, and 8× interpolator/coarse complex modulator allows carrier placement anywhere in DAC bandwidth.
Applications
- Wireless infrastructure W-CDMA, CDMA2000, TD-SCDMA, WiMax, GSM, LTE
- Digital high or low IF synthesis
- Internal digital upconversion capability
- Transmit diversity
- Wideband communications: LMDS/MMDS, point-to-point
Documentation
Data Sheet 1
Application Note 2
Solutions Bulletin & Brochure 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD9778ABSVZ | 100-Lead TQFP (14mm x 14mm w/ EP) | ||
| AD9778ABSVZRL | 100-Lead TQFP (14mm x 14mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Mar 7, 2012 - 11_0074 Addition of ASE, Shanghai as an Alternative Assembly Source for Select LQFP and TQFP-EP Packages |
||
| AD9778ABSVZ | PRODUCTION | |
| AD9778ABSVZRL | PRODUCTION | |
|
Jun 16, 2009 - 09_0027 Conversion to Laser Mark for the LQFP Packages (Single Grades) |
||
| AD9778ABSVZ | PRODUCTION | |
| AD9778ABSVZRL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 1
Ace Evaluation Software
Run this executable to install ACE on your computer for product evaluation.
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Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Clock ICs 6 | ||
| AD9510 | RECOMMENDED FOR NEW DESIGNS | 1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Eight Outputs |
| AD9511 | RECOMMENDED FOR NEW DESIGNS | 1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Five Outputs |
| AD9512 | RECOMMENDED FOR NEW DESIGNS | 1.2 GHz Clock Distribution IC, Two 1.6 GHz Inputs, Dividers, Delay Adjust, Five Outputs |
| AD9513 | RECOMMENDED FOR NEW DESIGNS | 800 MHz Clock Distribution IC, Dividers, Delay Adjust, Three Outputs |
| AD9514 | RECOMMENDED FOR NEW DESIGNS | 1.6 GHz Clock Distribution IC, Dividers, Delay Adjust, Three Outputs |
| AD9515 | RECOMMENDED FOR NEW DESIGNS | 1.6 GHz Clock Distribution IC, Dividers, Delay Adjust, Two Outputs |
| Modulators & Demodulators 15 | ||
| ADL5370 | PRODUCTION | 300 MHz TO 1000 MHz Quadrature Modulator |
| ADL5371 | RECOMMENDED FOR NEW DESIGNS | 500 MHz TO 1500 MHz Quadrature Modulator |
| ADL5372 | PRODUCTION | 1500 MHz TO 2500 MHz Quadrature Modulator |
| ADL5373 | PRODUCTION | 2300 MHz TO 3000 MHz Quadrature Modulator |
| ADL5374 | Obsolete | 3000 MHz TO 4000 MHz Quadrature Modulator |
| ADL5375 | PRODUCTION | 400 MHz TO 6 GHz Broadband Quadrature Modulator |
| AD8349 | PRODUCTION | 700 MHz TO 2.7 GHz Direct Up-Conversion Quadrature Modulator |
| ADL5385 | RECOMMENDED FOR NEW DESIGNS | 30 MHz TO 2200 MHz Quadrature Modulator |
| ADL5386 | Obsolete | 50 MHz to 2200 MHz Quadrature Modulator with Integrated Detector and VVA |
| ADRF6701 | Obsolete | 400 MHz to 1250 MHz Quadrature Modulator with 750 MHz to 1150 MHz Fractional-N PLL and Integrated VCO |
| ADRF6702 | Obsolete | 1200 MHz to 2400 MHz Quadrature Modulator with 1550 MHz to 2150 MHz Fractional-N PLL & Integrated VCO |
| ADRF6703 | Obsolete | 1550 MHz to 2650 MHz Quadrature Modulator with 2100 MHz to 2600 MHz Fractional-N PLL & Integrated VCO |
| ADRF6704 | Obsolete | 2050 MHz to 3000 MHz Quadrature Modulator with 2500 MHz to 2900 MHz Fractional-N PLL & Integrated VCO |
| AD8345 | PRODUCTION | 140 MHz to 1000 MHz Quadrature Modulator |
| AD8346 | PRODUCTION | 2.5 GHz Direct Conversion Quadrature Modulator |
| Operational Amplifiers 2 | ||
| AD8021 | PRODUCTION | Low Noise, High Speed Amplifier for 16-Bit Systems |
| ADA4897-1 | RECOMMENDED FOR NEW DESIGNS | 1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers |
Evaluation Kits
AD9778A Evaluation Board
Resources
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