MC92303

Features: • DVB compliant QPSK/BPSK Coherent Demodulator• Variable Modulation Rate up to 30 MBaud to work with all present European DVB Channels• Selectable Input Format (Offset Binary/2's Complement)• DC Offset Removal, I/Q-swapping and Input Format Selection in one block&...

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SeekIC No. : 004417351 Detail

MC92303: Features: • DVB compliant QPSK/BPSK Coherent Demodulator• Variable Modulation Rate up to 30 MBaud to work with all present European DVB Channels• Selectable Input Format (Offset Bi...

floor Price/Ceiling Price

Part Number:
MC92303
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

• DVB compliant QPSK/BPSK Coherent Demodulator
• Variable Modulation Rate up to 30 MBaud to work with all present European DVB Channels
• Selectable Input Format (Offset Binary/2's Complement)
• DC Offset Removal, I/Q-swapping and Input Format Selection in one block
• Decimation Filters for Oversampling Ratios of 2/T, 3/T, 4/T, 6/T, 8/T, 12/T and 16/T
• Half Nyquist Baseband Filters (a=0.35)
• Internal Numerically Controlled Oscillator (NCO)
• Automatic Gain Control (AGC) provided to analog front-end
• Automatic Frequency Control (AFC) to ±Rs (Symbol Rate)
• Clock Synchronization with 1-Bit SD-Converter Output for ADC control
• Programmable Second Order Loop Filters for Carrier Recovery and AGC
• 3-bit Soft Decision output per Symbol with selectable format (Offset Binary/2's Complement/Sign Magnitude)
• Programmable Sampling Rates of the Digital Sigma-Delta Converters
• < 0.5 dB Implementation Loss from theory
• I2C Programmable Interface
• 0.5 CMOS Process at 3.3V



Application

The demodulator can be used to implement a DVB compliant demodulator with the circuitry shown in Figure 2. The 3 bit soft decision data of the demodulator is connected directly toa Viterbi Decoder or a combined Viterbi and Reed Solomon Decoder.




Description

The MC92303 is a coherent digital demodulator for QPSK and BPSK modulated signals utilized in Digital-TV applications according to the EBU defined DVB transmission standard for satellite Set-Top systems or similar. The MC92303 contains all the functionality required to lock onto signals with frequency offsets as large as the baud rate and extract the desired signal from a frequency band with adjacent channel interference and other undesirable signals.




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