Datasheet for AD9877:
- Manufacturer Part Number : AD9877
- Manufacturer : AD
- Description : Single Supply Cable Modem/Set Top Box Mixed Signal Front End (MxFE®)
- Series : AD9877
- Reference Price : USD 0
- Our Price : We have a better price, contact us by email
- Product Type : Integrated/Special Purpose A/D Converters
- Function : Mixed-Signal Front Ends (MxFE)
- Current Suggest : Production
- Status : Obsolete
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD9877
- 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 Cost 3.3 V CMOS MxFE® for MCNS-DOCSIS, DVB-, DAVIC-Compliant Set-Top Box and Cable Modem Applications
- 232 MHz Quadrature Digital Upconverter
- 12-Bit Direct IF DAC (TxDAC+®)
- Up to 65 MHz Carrier Frequency DDS
- Programmable Sampling Clock Rates
- Selectable Interpolation Filter
- Analog Tx Output Level Adjust
- 12-Bit, 33 MSPS Direct IF ADC
- Dual 8-Bit, 16.5 MSPS Sampling IQ ADCs
- Two 12-Bit Sigma-Delta Auxiliary DACs
- Direct Interface to AD8321/AD8325 or AD8322/AD8327
- PGA Cable Driver
The transmit path interpolation filter provides upsampling factors of 12x or 16x with an output signal bandwidth as high as 8.4 MHz. The direct digital synthesizer (DDS) can generate carrier frequencies up to 65 MHz with 26 bits of frequency tuning resolution. The transmit DAC resolution is 12 bits and can run at sampling rates as high as 232 MSPS. Analog output scaling from 0 to 7.5 dB in 0.5 dB steps is available to preserve transmit path SNR when reduced output levels are required.
The 12-bit ADC has excellent undersampling performance allowing it to deliver better than 10 ENOBs with IF inputs up to 75 MHz. The 12-bit IF ADC has a sampling rate of up to 33MHz, allowing it to process wideband signal inputs.
Two programmable sigma delta DACs are available which can be used to control external components such as variable gain amplifiers (VGAs) or voltage-controlled tuners.
The AD9877 integrates a CA port that enables a host processor to control the AD8321/AD8323 or AD8322/AD8327 programmable gain amplifier (PGA) cable drivers through the MxFE SPORT.
The AD9877 is available in a 100-pin MQFP package. It offers enhanced receive path undersampling performance and lower cost, compared with the pin compatible AD9873. The AD9877 is specified over the extended industrial (-40ºC to +85°C) temperature range.
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.
