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GENERAL DESCRIPTION
The Quadrature Phase Shift Keying (QPSK) transmitter is a monolithic bipolar IC dedicated for quadrature modulation of the I and Q signals. It includes:
• Two double-balanced mixers
• Symmetrical Voltage Controlled Oscillator (VCO) with 0 to 90 degree signal generation for modulation
• Phase-Locked Loop (PLL) for IF frequency control
• Conversion mixer
• PLL for RF frequency control
• Gain controlled output amplifier
• 3-wire bus and an output buffer. Two PLLs are incorporated, the first PLL includes:
• Fixed main divider
• Crystal oscillator and its programmable reference divider
• Phase/frequency detector combined with a fixed charge pump.The second PLL includes:
• Divide-by-four preamplifier
• 12-bit programmable divider
• Crystal oscillator and its programmable reference divider
• Phase/frequency detector combined with a ‘clever’ charge pump which drives the tuning amplifier, including 9 V output.FEATURES
• Programmable gain
• PLL controlled carrier frequency
• 3-wire transmission bus
• 5 V supply voltage.APPLICATIONS
• QPSK modulation.
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Similar parts: 430483 , Click to view
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Datasheet
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Popular parts of the same kind
- Datasheet: Download A80502133SY022
- Chipdatas Part: CD93-A80502133SY022
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/13 01:41 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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