SKY73134 Datasheet, PDF (2/17 Pages) Skyworks Solutions Inc. – Wideband PLL Frequency Synthesizer

PRELIMINARY DATA SHEET • SKY73134 FREQUENCY SYNTHESIZER
OUT_BUFP
OUT_BUFN
Output
Buffer
÷1
÷2
÷3
÷4
÷8
Digital Frequency Control
VCO Calibration
VCO VCO VCO VCO
1
2
3
4
VCO
Buffer
Read/Write
SPI
VCO
Out
PLL
Buffer
VCO
In
N-Divider
R-Divider
Ref
Buffer
Phase Detector
Charge Pump
Lock Detect
CLK
DATA
LE
EXT_VCON
EXT_VCOP
REF_CLK
Figure 2. SKY73134 Block Diagram
Table 1. SKY73134 Signal Descriptions
Pin #
Name
Description
Pin #
Name
1 VCC_VCO
Supply for VCO
17 VCC_REF
2 VCC_CAP
External capacitor for VCO bias connected 18 GND_REF
to VCC_VCO pin
3 VCO_RES
External 15 kΩ resistor to set VCO bias
19 REF_CLK
4 OUT_BUFP
Positive LO output
20 PLL_RES
5 OUT_BUFN
6 VCC_OBUF
7 DIV_CAP
8 DIV_RES
9 VCC_DIV
10 VCTRL
11 VCC_PLL
12 VCC_CP
13 CP_OUT
14 LF_CTRL
15 LD_OUT
16 VCC_DIG
Negative LO output
Supply for output buffer
External capacitor for the divider bias
connected to the VCC_DIV pin
External 60 kΩ resistor to set the divider
bias
Supply for dividers
VCO tuning voltage
PLL supply
Supply for charge pump
Charge pump output
Loop filter component switch control
Lock detect output
Supply for digital blocks
21 EXT_VCOP
22 EXT_VCON
23 LE
24 DATA
25 CLK
26 N/C
27 N/C
28 N/C
29 N/C
30 N/C
31 N/C
32 N/C
S1838
Description
Supply for reference buffer
Reference buffer ground
Reference clock input
External 24 kΩ resistor for the PLL/charge
pump bias
Positive, external VCO input
Negative, external VCO input
Latch enable input for the SPI
Data input for the SPI
Clock input for the SPI
No connection
No connection
No connection
No connection
No connection
No connection
No connection
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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December 15, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201199A