sky73112-11 Skyworks Solutions, Inc., sky73112-11 Datasheet

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sky73112-11

Manufacturer Part Number
sky73112-11
Description
Sky73112-11 750-850 Mhz High Performance Vco/synthesizer With Integrated Switch
Manufacturer
Skyworks Solutions, Inc.
Datasheet

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Part Number:
SKY73112-11
Manufacturer:
Skyworks
Quantity:
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Part Number:
SKY73112-11
Manufacturer:
SKYWORKS/思佳讯
Quantity:
20 000
DATA SHEET
SKY73112-11: 750-850 MHz High Performance
VCO/Synthesizer With Integrated Switch
Applications
Features
2G, 2.5G, and 3G base station transceivers:
General purpose RF systems
Frequency operation range: 750 to 850 MHz
Process-tolerant compensation for VCO
24-bit
Ultra-fine frequency resolution of 0.001 ppm
Flexible reference frequency selection
Three-wire serial interface up to 20 MHz clock frequency
Integrated PLL supply regulation for spur isolation
MCM (38-pin, 9 x 12 mm) SMT package (MSL3, 260 C per
JEDEC J-STD-020)
GSM, EDGE, CDMA, WCDMA
fractional-N synthesizer
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200736B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 30, 2009
FREF
LD
Vtune
7
Lr
Lr
Figure 1. SKY73112-11 Functional Block Diagram
cap [6:0]
Flag
Divider
R1
R1
7
Cal
SP1
PFD
RF
Low Pass Filter
(LD/Test)
Mux
PLL
Vtune
2
ME
FN
RF Charge
Pump
SC1
Modulator
2
Divider
ΔΣ
N
N
CPO RF
cap [6:0]
Calibration
Divide-by-2
Coarse
Digital
Description
Skyworks SKY73112-11 Voltage-Controlled Oscillator
(VCO)/Synthesizer is a fully integrated, high performance signal
source for high dynamic range transceivers. The device provides
ultra-fine frequency resolution, fast switching speed, and low
phase noise performance for 2G, 2.5G, and 3G base station
transceivers.
The SKY73112-11 VCO/Synthesizer is a key building block for
high-performance radio system designs that require low power
and a fine step size. Reference clock generators with an output
frequency up to 52 MHz can be used with the SKY73112-11. A
functional block diagram is shown in Figure 1. As indicated in this
diagram, the reference frequency is divided down by 1, 2, 4, or 8
in the R1 divider, depending on the value of the reference divisor
input (R1). Refer to the Reference Input Divider section (page 10)
for more information.
The SKY73112-11 VCO/Synthesizer is provided in a compact,
38-pin Multi-Chip Module (MCM). The device package and pinout
are shown in Figure 2. Signal pin assignments and functional pin
descriptions are provided in Table 1.
7
2
2
Buffer
Calibration
Complete
Prescaler
P/P+1
PS
Interface
3-Wire
Serial
VCO Out +
VCO Out –
SR Out +
SR Out –
RF
RF
IN
INB
Z = 1:4
RF Output
SW_EN
CLK
LE
DAT
S1040
1

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sky73112-11 Summary of contents

Page 1

... Reference clock generators with an output frequency MHz can be used with the SKY73112-11. A functional block diagram is shown in Figure 1. As indicated in this diagram, the reference frequency is divided down the R1 divider, depending on the value of the reference divisor input (R1) ...

Page 2

... GND 1 GND 2 GND 3 SW_EN 4 GND 5 GND 6 GND 7 GND 8 GND 9 RF_OUT Figure 2. SKY73112-11 Pinout– 38-Pin MCM Package (Top View) Description Pin # 20 GND 21 N FREF 24 GND 25 GND 26 GND 27 N/C 28 GND 29 GND 30 GND 31 GND 32 GND 33 N/C 34 ...

Page 3

... Figure 3. Preset timing parameter values are provided in Table 2. Although the SKY73112-11 uses supply, the internal voltage regulator has a 3.3 V output for the PLL. Therefore, the input DC voltage for the serial interface (CLK, DATA, and LE signals) should be set to 3 ...

Page 4

... Words 0-3 Bits [1:0] 2 LSB Decode (Register Address, LE Bits [1:0]) Table 3. SKY73112-11 Hold Registers and Addresses Hold Register Name Operation Mode Auto Calibration Control Frequency Control 1 Frequency Control 2 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 4 November 30, 2009 • ...

Page 5

... Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200736B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 30, 2009 DATA SHEET • SKY73112-11 VCO/SYNTHESIZER State Description Bits [4:2]: ...

Page 6

... DATA SHEET • SKY73112-11 VCO/SYNTHESIZER Table 4. Load Register Word 0 (Programs the Operation Mode Register Parameter Function test_mux Lock detect and diagnostic output select [17:15] rsvd Reserved [20:18] pre_curr_sel Prescaler current bias [22:21] prescale_sel Prescaler mode select [23] rsvd Reserved [25:24] Table 5. Load Register Word 1 (Programs the Auto Calibration Control Register) ...

Page 7

... Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200736B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 30, 2009 DATA SHEET • SKY73112-11 VCO/SYNTHESIZER State Description Bits [15:6]: ...

Page 8

... DATA SHEET • SKY73112-11 VCO/SYNTHESIZER Table 8. DPLL Digital Control Bits Serial Port Name dpll_clk_dly(0) dpll_clk_dly(1) dpll_temp_comp(0) dpll_temp_comp(1) dpll_temp_comp(2) dpll_temp_comp(3) dpll_temp_comp(4) dpll_temp_comp_en dpll_ext_test(0) dpll_ext_test(1) dpll_ext_test(2) dpll_ext_test(3) dpll_ext_test(4) dpll_ext_test(5) dpll_ext_test(6) dpll_ext_test(7) dpll_flag_override dpll_flag_value Figure 5. VCO Auto-Tuning Enable Process Flow Due to POR or Frequency Change Skyworks Solutions, Inc. • ...

Page 9

... The phase detector and charge pump detect and integrate the phase and frequency errors of the divided down VCO output versus the reference clock. This results in a feedback adjustment of the control voltage for the VCO. DATA SHEET • SKY73112-11 VCO/SYNTHESIZER Word 3 Word 1 (Bit [20] high) D25 ...

Page 10

... November 30, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200736B Because of the way the SKY73112-11, the number 3.5 must be added to the division number to obtain the final division ratio. The calculated value for D correct synthesizer frequency, RF: ...

Page 11

... Otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. The SKY73112-11 is rated to Moisture Sensitivity Level 3 (MSL3) at 260 C. It can be used for lead or lead-free soldering. For and removing the Total ...

Page 12

... November 30, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200736B Electrostatic Discharge (ESD) Sensitivity The SKY73112-11 ESD threshold level is 250 VDC for the RF_OUT pin and 2000 VDC for all other pins using Human Body Model (HBM) testing ...

Page 13

... Note 1: Performance is guaranteed only under the conditions listed in this Table. Note 2: Characterized performance may change if the SKY73112-11 is configured differently than the test conditions specified here. This characterization used a 6.5 MHz fixed comparison frequency for the PLL loop filter. The PLL synthesizer is programmable maximum comparison frequency of 26 MHz but with degraded performance. ...

Page 14

... DATA SHEET • SKY73112-11 VCO/SYNTHESIZER Table 12. SKY73112-11 Spur Suppression Measurements (VCC = °C, Charge Pump Current = 600 Offset from Center Frequency (Hz) 200-600 No spur 600-800 No spur >800 (2163.111 kHz, –106 dBc) –60 –70 –80 –90 –100 –110 –120 –130 –140 – ...

Page 15

... C ° –40 C 0.8 0.6 0.4 0.2 0 813 828 843 753 Figure 13. Integrated Phase Noise vs Frequency and Supply DATA SHEET • SKY73112-11 VCO/SYNTHESIZER 753 MHz 814 MHz 844 MHz 400 500 S1106 768 783 798 813 828 RF Frequency (MHz) 768 783 798 813 ...

Page 16

... DATA SHEET • SKY73112-11 VCO/SYNTHESIZER 500 400 300 200 100 0 753 768 783 798 RF Frequency (MHz) Figure 14. Phase Settling Time vs Frequency and Temperature –85 –87 –89 –91 –93 –95 753 768 783 798 RF Frequency (MHz) Figure 16. Phase Noise @ 10 kHz Offset vs Frequency and Temperature – ...

Page 17

... C ° –167 –40 C –171 –175 –179 –183 813 828 843 753 Figure 27. Phase Noise @ 6000 kHz Offset vs Frequency and DATA SHEET • SKY73112-11 VCO/SYNTHESIZER 768 783 798 813 828 RF Frequency (MHz) Supply Voltage 798 768 783 813 828 RF Frequency (MHz) Supply Voltage ...

Page 18

... GND 2 GND 3 GND 4 SW_EN 5 GND SKY73112 6 GND 7 GND 8 GND 9 GND 10 RF_OUT × Figure 28. SKY73112-11 Typical Application Schematic GND 28 GND 27 × N/C 26 GND 25 GND 24 GND 23 Frequency FREF Reference 22 LD Lock Detect 21 × N/C 20 GND 18 19 Latch Enable Data ...

Page 19

... Top View All measurements are in millimeters Figure 29. PCB Layout Footprint for the SKY73112- MCM Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200736B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 30, 2009 ...

Page 20

... Detail B SMT Pad Scale This Rotation Rotated 180 CW CCW 1 1.5 Solder Mask Edges Detail E Scale: 2X Figure 30. SKY73112-11 38-Pin MCM Package Dimensions 38X SMT Pad 0 Pin 38 C Pin 1 Indicator See Detail D Pin Bottom View Metal Pad Edge 0.5 ± 0.1 2X (0.1) 0.65 ± ...

Page 21

... Ao and Bo measurement point to be 0.30 mm from bottom pocket 6. All measurements are in millimeters Figure 31. SKY73112-11 Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200736B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 30, 2009 DATA SHEET • ...

Page 22

... DATA SHEET • SKY73112-11 VCO/SYNTHESIZER Ordering Information Model Name SKY73112-11 750-850 MHz VCO/Synthesizer Copyright © 2007, 2009 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer ...

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