Datasheet for AD9761:
- Manufacturer Part Number : AD9761
- Manufacturer : AD
- Description : 10-Bit, Complete, 40 MSPS, dual Transmit D/A Converter
- Series : AD9761
- Reference Price : USD 9.392
- 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 : AD9761
- 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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- 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
The AD9761 is a complete dual channel, high speed, 10-bitCMOS DAC. The AD9761 has been developed specifically foruse in wide bandwidth communication applications (e.g., spreadspectrum) where digital I and Q information is being processedduring transmit operations. It integrates two 10-bit, 40 MSPSDACs, dual 2x interpolation filters, a voltage reference, anddigital input interface circuitry. The AD9761 supports a20 MSPS per channel input data rate that is then interpolatedby 2x up to 40 MSPS before simultaneously updating eachDAC.
The interleaved I and Q input data stream is presented to thedigital interface circuitry, which consists of I and Q latches as wellas some additional control logic. The data is de-interleaved backinto its original I and Q data. An on-chip state machine ensures theproper pairing of I and Q data. The data output from each latch isthen processed by a 2x digital interpolation filter that eases thereconstruction filter requirements. The interpolated output of eachfilter serves as the input of their respective 10-bit DAC.
The DACs utilize a segmented current source architecture combinedwith a proprietary switching technique to reduce glitchenergy and to maximize dynamic accuracy. Each DAC providesdifferential current output thus supporting single-ended ordifferential applications. Both DACs are simultaneously updatedand provide a nominal full-scale current of 10 mA. Also,the full-scale currents between each DAC are matched to within0.07 dB (i.e., 0.75%), thus eliminating the need for additionalgain calibration circuitry.
The AD9761 is manufactured on an advanced low cost CMOSprocess. It operates from a single supply of 2.7 V to 5.5 V andconsumes 200 mW of power. To make the AD9761 complete italso offers an internal 1.20 V temperature-compensated bandgapreference.
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.