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Description
The 8833X3-I is an IC chip that belongs to the RF synthesizer component category. It is a fractional-N frequency synthesizer with dual-modulus prescalers designed for RF operation up to 1.2GHz/K-PCS and for IF operation up to 520MHz. This component aims to solve fractional spur problems in other fractional-N synthesizers based on charge pump compensation and supports fast-locking, low phase noise phase-locked loops to be built easily.
Specifications and features
- High operating frequency dual synthesizer
- S1M8831A: 0.71 to 1.2GHz(RF)/ 45 to 520MHz(IF)
- S1M8833: 1.6 to 1.65GHz(RF)/ 45 to 520MHz(IF)
- Operating voltage range: 2.7 to 4.0V
- Low current consumption (S1M8831A: 5.0mA, S1M8833: 7.0mA)
- Selectable power saving mode (ICC = 1uA typical @ 3V)
- Dual-modulus prescaler and Fractional-N/Integer-N:
- S1M8831A (RF) 8/9 Fractional-N
- S1M8833 (RF) 16/17 Fractional-N
- S1M8831A/33 (IF) 8/9 Integer-N
- Excellent in-band phase noise ( – 85dBc/Hz @ PCS, -90dBc/Hz @CDMA)
- Improved fractional spurious performance ( < 80dBc)
- Frequency resolution (= 10kHz/64 @ fref = 9.84MHz)
- Fast channel switching time: < 500us
- Programmable charge pump output current: from 50uA to 800uA in 50uA steps
- Programmability via on-chip serial bus interface
Application Scenarios
- High-rate data-service cellular telephones (for CDMA): S1M8831A, S1M8833
- High-rate data-service portable wireless communications (for Korean-PCS): S1M8833
- Other wireless communications systems
Comparison
Advantages- Fractional-N frequency synthesizer with dual-modulus prescalers
- Supports fast-locking, low phase noise phase-locked loops to be built easily
- Excellent in-band phase noise and improved fractional spurious performance
- Fast channel switching time
Disadvantages- None mentioned
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Datasheet
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Additional Information
- Datasheet: Download 8833X3-I
- Chipdatas Part: CD86-8833X3-I
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/02 11:48 +0800
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