AD9761 - ADI

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

Part No

AD9761
Manufacturer

ADI
ChipWorker Part#

CW760515037
Description

10Bit, Complete, 40MSPS, dual Transmit D/A Converter
Documentation

Datasheet

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AD9761 Specifications

Attribute	Attribute Value

Part Number	AD9761
Manufacturer	ADI
ChipWorker Part#	CW760515037
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD9761 is a complete dual channel, high speed, 10-bit CMOS DAC. The AD9761 has been developed specifically for use in wide bandwidth communication applications (e.g., spread spectrum) where digital I and Q information is being processed during transmit operations. It integrates two 10-bit, 40 MSPS DACs, dual 2x interpolation filters, a voltage reference, and digital input interface circuitry. The AD9761 supports a 20 MSPS per channel input data rate that is then interpolated by 2x up to 40 MSPS before simultaneously updating each DAC.
The interleaved I and Q input data stream is presented to the digital interface circuitry, which consists of I and Q latches as well as some additional control logic. The data is de-interleaved back into its original I and Q data. An on-chip state machine ensures the proper pairing of I and Q data. The data output from each latch is then processed by a 2x digital interpolation filter that eases the reconstruction filter requirements. The interpolated output of each filter serves as the input of their respective 10-bit DAC.
The DACs utilize a segmented current source architecture combined with a proprietary switching technique to reduce glitch energy and to maximize dynamic accuracy. Each DAC provides differential current output thus supporting single-ended or differential applications. Both DACs are simultaneously updated and provide a nominal full-scale current of 10 mA. Also, the full-scale currents between each DAC are matched to within 0.07 dB (i.e., 0.75%), thus eliminating the need for additional gain calibration circuitry.
The AD9761 is manufactured on an advanced low cost CMOS process. It operates from a single supply of 2.7 V to 5.5 V and consumes 200 mW of power. To make the AD9761 complete it also offers an internal 1.20 V temperature-compensated bandgap reference.
### Features and Benefits
Complete 10-Bit, 40 MSPS Dual Transmit DAC
Excellent Gain and Offset Matching
Differential Nonlinearity Error: 0.5 LSB
Effective Numbe of Bits: 9.5
Signal-to-Noise and Distortion Ratio: 59 dB
Spurious-Free Dynamic Range: 71 dB
2x Interpolation Filters
20 MSPS/Channel Data Rate
Single Supply: 3V to 5.5 V
Low Power Dissipation: 93 mW
(3 V Supply @ 40 MSPS)
On-Chip Reference
28-Lead SSOP

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