Datasheet > SKY72302

SKY72302

更新时间： 2024-09-29 03:12:39

品牌	Logo	应用领域
思佳讯 - SKYWORKS		/
页数	文件大小	规格书
21页	166K
描述
Spur-Free, 6.1 GHz Dual Fractional-N Frequency Synthesizer

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SKY72302 数据手册

DATA SHEET

SKY72302: Spur-Free, 6.1 GHz Dual Fractional-N Frequency

Synthesizer

Applications

• 3 V operation

• General purpose RF systems

• 2.5G and 3G wireless infrastructures

• Broadband wireless access

• Low bit rate wireless telemetry

• Wireless Local Loop (WLL)

• Instrumentation

• 5 V output to loop filter

• EP-TSSOP (28-pin, 9.7 x 6.4 x 1.1 mm) Pb-free (MSL3, 260 °C

per JEDEC J-STD-020) package

Description

Skyworks SKY72302 direct digital modulation fractional-N

frequency synthesizer provides ultra-fine frequency resolution,

fast switching speed, and low phase-noise performance. This

synthesizer is a key building block for high-performance radio

system designs that require low power and fine step size.

Features

• Spur-free operation

The ultra-fine step size of less than 400 Hz allows this synthesizer

to be used in very narrowband wireless applications. With proper

temperature sensing or through control channels, the

synthesizer’s fine step size can compensate for crystal oscillator

or Intermediate Frequency (IF) filter drift. As a result, crystal

oscillators or crystals can replace temperature-compensated or

ovenized crystal oscillators, reducing parts count and associated

component cost. The device’s fine step size can also be used for

Doppler shift corrections.

• 6.1 GHz maximum operating frequency

• 1000 MHz maximum auxiliary synthesizer

• Ultra-fine step size, 400 Hz or less

• High internal reference frequency enables large loop bandwidth

implementations

• Very fast switching speed (e.g., below 100 µs)

• Phase noise to –80 dBc/Hz inside loop filter bandwidth

@ 6100 MHz

The SKY72302 has a phase noise floor of –80 dBc/Hz up to

6.1 GHz operation as measured inside the loop bandwidth. This is

permitted by the on-chip low noise dividers and low divide ratios

provided by the device’s high fractionality.

• Software programmable power-down modes

• High speed serial interface up to 100 Mbps

• Three-wire programming

Reference crystals or oscillators up to 50 MHz can be used with

the SKY72302. The crystal frequency is divided down by

independent programmable dividers (1 to 32) for the main and

auxiliary synthesizers. The phase detectors can operate at a

maximum speed of 25 MHz, which allows better phase noise due

to the lower division value. With a high reference frequency, the

loop bandwidths can also be increased. Larger loop bandwidths

improve the settling times and reduce in-band phase noise.

Therefore, typical switching times of less than 100 µs can be

achieved. The lower in-band phase noise also permits the use of

lower cost Voltage Controlled Oscillators (VCOs) in customer

applications.

• Programmable division ratios on reference frequency

• Phase detectors with programmable gains to provide a

programmable loop bandwidth

• Frequency power steering further enhances rapid acquisition

time

• On-chip crystal oscillator

• Frequency adjust for temperature compensation

• Direct digital modulation

Skyworks offers lead (Pb)-free, RoHS (Restriction of

Hazardous Substances) compliant packaging.

The SKY72302 has a frequency power steering circuit that helps

the loop filter to steer the VCO when the frequency is too fast or

too slow, further enhancing acquisition time.

Innovation to Go

Now available for purchase online.

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

101216K • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • May 16, 2007

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与SKY72302相关器件

型号	品牌	获取价格	描述	数据表
SKY72302-21	SKYWORKS	获取价格	SKY72302-21: Spur-Free, 6.1 GHz Dual Fractional-N Frequency Synthesizer
SKY72310-362LF	SKYWORKS	获取价格	Phase Locked Loop, 4 X 4 MM, ROHS COMPLIANT, QFN-24
SKY73001	SKYWORKS	获取价格	2 ? 3500 MHz Direct Conversion Mixer
SKY73001_06	SKYWORKS	获取价格	2 - 3500 MHz Direct Conversion Mixer
SKY73001-11	SKYWORKS	获取价格	2 ? 3500 MHz Direct Conversion Mixer
SKY73009	SKYWORKS	获取价格	400 -3000 MHz Direct Quadrature Demodulator
SKY73009-11	SKYWORKS	获取价格	400 -3000 MHz Direct Quadrature Demodulator
SKY73010	SKYWORKS	获取价格	300 - 2500 MHz Direct Quadrature Modulator
SKY73010-11	SKYWORKS	获取价格	300 - 2500 MHz Direct Quadrature Modulator
SKY73010-21	SKYWORKS	获取价格	Modulator, AM/Phase, 300MHz Min, 2500MHz Max, 4 X 4 MM, LEAD FREE, RFLGA-16

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