參數(shù)資料
型號(hào): SKY72300-21
廠商: Skyworks Solutions Inc
文件頁(yè)數(shù): 12/22頁(yè)
文件大?。?/td> 0K
描述: IC SYNTHESIZER 2.1GHZ 28-EPTSSOP
產(chǎn)品目錄繪圖: 28-TSSOP
標(biāo)準(zhǔn)包裝: 1
類型: 分?jǐn)?shù) N 合成器
PLL:
輸入: 時(shí)鐘,晶體
輸出: 時(shí)鐘,晶體
電路數(shù): 1
比率 - 輸入:輸出: 2:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 2.1GHz
除法器/乘法器: 是/無(wú)
電源電壓: 2.7 V ~ 3.3 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-SOIC(0.173",4.40mm 寬)裸露焊盤
供應(yīng)商設(shè)備封裝: 28-TSSOP 裸露焊盤
包裝: 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁(yè)面: 587 (CN2011-ZH PDF)
其它名稱: 863-1076-6
DATA SHEET SKY72300-21 FREQUENCY SYNTHESIZER
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
2
September 11, 2009 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 101217N
The SKY72300-21 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.
The unit operates with a three-wire, high-speed serial interface. A
combination of large bandwidth, fine resolution, and the three-
wire, high-speed serial interface allows for a direct frequency
modulation of the VCO. This supports any continuous phase,
constant envelope modulation scheme such as Frequency
Modulation (FM), Frequency Shift Keying (FSK), Minimum Shift
Keying (MSK), or Gaussian Minimum Shift Keying (GMSK).
This capability can eliminate the need for In-phase and
Quadrature (I/Q) Digital-to-Analog Converters (DACs), quadrature
upconverters, and IF filters from the transmitter portion of the
radio system.
Figure 1 shows a functional block diagram for the SKY72300-21.
The device package and pinout for the 28-pin Exposed Pad Thin
Shrink Small Outline Package (EP-TSSOP) are shown in Figure 2.
Serial
Interface
Modulation
Unit
Main
Divider
Auxiliary
Divider
Fvco_aux
Fvco_main
Fpd_main
Fpd_aux
Fref_main
Fref_aux
Fref
CPout_aux
CPout_main
LD/PSmain
LD/PSaux
Fvco_main
Reference
Frequency
Oscillator
Reference
Frequency
Oscillator
Main
Phase/Freq.
Detector
and
Charge Pump
Auxiliary
Phase/Freq.
Detector
and
Charge Pump
Main
Divider
Auxiliary
Prescaler
Data
Mux
Mod_in
Mux_out
Clock
CS
Fractional
Unit
Fractional
Unit
ΔΣ
18-Bit
ΔΣ
10-Bit
Registers
Modulation
Data
Main
Divider
Modulation
Control
Ref Freq
Dividers
PD/Charge Pump
& Pwr-Dn/Mux Out
Control
Aux
Divider
Main
MSB/LSB
Dividend
Aux
Dividend
Lock Detection or
Power Steering
Lock Detection or
Power Steering
C1447
Figure 1. SKY72300-21 Functional Block Diagram
C1412
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Clock
Mod_in
Mux_out
VSUBdigital
GNDcml
VCCcml_main
Fvco_main
LD/PSmain
VCCcp_main
CPout_main
GNDcp_main
Xtalacgnd/OSC
Xtalin/OSC
CS
Data
VCCdigital
GNDdigital
VCCcml_aux
VCCvco_aux
Fvco_aux
GNDcp_aux
CPout_aux
VCCcp_aux
LD/PSaux
GNDxtal
VCCxtal
Xtalout/NC
Figure 2. SKY72300-21 Pinout, 28-Pin EP-TSSOP
(Top View)
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