AD9789 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD9789
Manufacturer

ADI
ChipWorker Part#

CW1205271138
Description

14Bit, 2400MSPS RF DAC with 4Channel Signal Processing
Documentation

Datasheet

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AD9789 Specifications

Attribute	Attribute Value

Part Number	AD9789
Manufacturer	ADI
ChipWorker Part#	CW1205271138
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD9789 is a flexible QAM encoder/interpolator/upconverter combined with a high performance, 2400 MSPS, 14-bit RF digital-to-analog converter (DAC). The flexible digital interface can accept up to four channels of complex data. The QAM encoder supports constellation sizes of 16, 32, 64, 128, and 256 with SRRC filter coefficients for all standards.
The on-chip rate converter supports a wide range of baud rates with a fixed DAC clock. The digital upconverter can place the channels from 0 to 0.5 × fDAC. This permits four contiguous channels to be synthesized and placed anywhere from dc to fDAC/2.
The AD9789 includes a serial peripheral interface (SPI) for device configuration and status register readback. The flexible digital interface can be configured for data bus widths of 4, 8, 16, and 32 bits. It can accept real or complex data.
The AD9789 operates from 1.5 V, 1.8 V, and 3.3 V supplies for a total power consumption of 1.6 W. It is supplied in a 164-ball chip scale package ball grid array for lower thermal impedance and reduced package parasitics. No special power sequencing is required. The clock receiver powers up muted to prevent start-up noise.
**Product Highlights**
1. Highly integrated and configurable QAM mappers, interpolators, and upconverters for direct synthesis of 1 to 4 DOCSIS or DVB compatible channels in a block.
2. Low noise and intermodulation distortion (IMD) performance enable high quality synthesis of signals up to 1 GHz.
3. Flexible data interface supports LVDS for outstanding SFDR or CMOS input data for less demanding applications.
4. Interface is configurable from 4-bit nibbles to 32-bit words and can run at up to 150 MHz CMOS or 150 MHz LVDS DDR.
5. Manufactured on a CMOS process, the AD9789 uses a proprietary switching technique that enhances dynamic performance.
**Applications**
Broadband communications systems
CMTS/DVB
Cellular infrastructure
Point-to-point wireless
### Features and Benefits
Power: 1.7 W (IFS = 20 mA; fDAC = 2.4 GHz, LVDS I/F)
Excellent dynamic performance:
DOCSIS 3.0 ACLR: 4 QAM carriers
-75 dBc @ fOUT = 200 MHz
-71 dBc @ fOUT = 800 MHz (noise)
-67 dBc @ fOUT = 800 MHz (harmonics)
Unequalized MER = 42 db
On-chip and bypassable:
4 QAM encoders with SRRC filters, 16X – 512X
interpolation, rate converters and modulators
Flexible data interface:
4, 8, 16, or 32 bits wide with parity
Direct to RF synthesis support w/ Fs Mix Mode
Built-in self-test (BIST) supports
Input connectivity check
Internal random data generator

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- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
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- Electrical testing
- Surface testing

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