DATA SHEET
SKY73010: 300 – 2500 MHz Direct Quadrature Modulator
Applications
• QPSK/GMSK/QAM/DQPSK modulators • Single-sideband modulators • Image reject mixers • CDMA base stations • GSM/EDGE, TDMA/TDMA-EDGE, and Trans-European Trunked Radio (TETRA) base stations • First upconverter in dual conversion receivers
Description
The SKY73010 is an integrated quadrature modulator for direct modulation of high frequency Amplitude Modulated (AM), Phase Modulated (PM), or compound carriers. A SiGe Bipolar Complementary Metal Oxide Semiconductor (BiCMOS) process is used to offer excellent linearity, noise floor, and carrier suppression performance. The device package and pinout for the 16-pin RF Land Grid Array (RFLGA) are shown in Figure 1. Figure 2 shows a functional block diagram for the SKY73010. Signal pin assignments and functional pin descriptions are provided in Table 1. Skyworks offers this part as a lead (Pb)-free “environmentally friendly” package that is RoHS compliant (European Parliament for the Restriction of Hazardous Substances).
Features
• Broad RF and LO frequency range: 300 to 2500 MHz • Carrier suppression greater than 35 dBc • Sideband suppression greater than 45 dBc • Modulation bandwidth DC to 250 MHz • Noise floor less than –153 dBm/Hz • Broadband LO/RF flatness • RFLGA™ (16-pin, 4 x 4 mm) Pb-free package (MSL3, 260 °C per JEDEC J-STD-020)
QREF
GND
IREF
ISIG
QSIG
1
16
15
14
13
ISIG IREF
GND
2
12
GND
GND
3
11
GND
LO
LO
4 10
–45 +45
RF OUT
VCC
5
6
7
8
9
GND
VCC
GND
QSIG
C1299
PD
RF
QREF
C1298
Figure 1. SKY73010 Pinout– 16-Pin RFLGA Package (Top View)
Figure 2. SKY73010 Functional Block Diagram
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DATA SHEET • SKY73010
Table 1. SKY73010 Signal Descriptions
Pin # 1 2 3 4 5 6 7 8 GND GND GND LO GND VCC PD RF Name Ground Ground Ground LO input Ground +5 VDC supply Power down Ground Description Pin # 9 10 11 12 13 14 15 16 GND VCC GND GND QSIG ISIG IREF QREF Name Ground +5 VDC supply Ground Ground Q input I input I reference Q reference Description
Circuit Design Considerations
The following design considerations are general in nature and must be followed regardless of final use or configuration. 1. Paths to ground should be made as short as possible. 2. The downset paddle of the SKY73010 direct quadrature modulator has special electrical and thermal grounding requirements. This pad is the main thermal conduit for heat dissipation. Since the circuit board acts as the heat sink, it must shunt as much heat as possible from the device. As such, design the connection to the ground pad to dissipate the maximum wattage produced to the circuit board. Multiple vias to the grounding layer are required. 3. Two external output bypass capacitors are required on the VCC pin. The values of these capacitors change with respect to the desired RF frequency. One capacitor should be used for low frequency bypassing and the other capacitor for high frequency bypassing. Special attention should be given so that the smaller value capacitor does not go into selfresonance at the desired RF frequency.
Package and Handling Information
Since the device package is sensitive to moisture absorption, it is baked and vacuum packed before shipping. Instructions on the shipping container label regarding exposure to moisture after the container seal is broken must be followed. Otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. The SKY73010 is rated to Moisture Sensitivity Level 3 (MSL3) at 260 °C. It can be used for lead or lead-free soldering. For additional information, refer to the Skyworks Application Note, PCB Design & SMT Assembly/Rework Guidelines for RFLGA Packages, document number 103147. Care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. Production quantities of this product are shipped in a standard tape and reel format. For packaging details, refer to the Skyworks Application Note, Tape and Reel, document number 101568.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY73010 are provided in Table 2. The recommended operating conditions are specified in Table 3 and electrical specifications are provided in Table 4. Typical performance characteristics are shown in Figures 3 through 7. Figure 8 provides a typical evaluation board schematic. Package dimensions for the 16-pin RFLGA are shown in Figure 9, and tape and reel dimensions are shown in Figure 10.
Testing Procedure
The following In-Phase and Quadrature (I/Q) input settings were used to measure the CDMA Adjacent Channel Power Reduction (ACPR): • Pilot Channel Active • Sync Channel Active • Paging Channel Active • Six Traffic Channels Active • 32x oversampling • Equifilter
Electrostatic Discharge (ESD) Sensitivity
The SKY73010 is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions.
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DATA SHEET • SKY73010
Table 2. SKY73010 Absolute Maximum Ratings (TA = +25 °C, unless otherwise noted)
Parameter +3 V supply voltage Power dissipation LO input power IF input voltage Thermal resistance Operating case temperature Storage case temperature RTH TOPR TSTG –40 –40 44 +85 +150 VCC PDIS PLOIN 0 Symbol Min 4.5 Typical Max 6.0 750 +6 1.5 Units V mW dBm Vpp °C/W °C °C
Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal values.
Table 3. SKY73010 Recommended Operating Conditions
Parameter +5 V supply voltage Current consumption Operating case temperature VCC ICC TOPR –40 Symbol Min 4.5 Typical 5.0 90 Max 5.5 110 +85 Units V mA °C
Table 4. SKY73010 Electrical Characteristics (1 of 2) (VCC = 5 V, IF = 2 MHz, LO input power = –3 dBm, TC = 25 °C, unless otherwise noted)
Parameter Local Oscillator Input frequency range Input power level Input impedance I/Q Signal Reference Input Input frequency range Reference voltage RF Output (400 MHz) Output –1 dB compression point CDMA output channel power CDMA ACPR Optimized carrier suppression Carrier suppression Sideband suppression Optimized sideband suppression Broadband noise floor Output impedance Optimized I/Q phase and amplitude balance @ 20 MHz offset from carrier CDMA RF output power = –12 dBm Optimized I/Q DC offsets 50 28 30 50 –152 2.0:1 –150 35 35 3 –12 73 dBm dBm dBc dBc dBc dBc dBc dBm/Hz Ω DC 3.6 4.1 250 MHz V 300 –3 2.0:1 2500 +3 MHz dBm VSWR Symbol Test Conditions Min Typical Max Units
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DATA SHEET • SKY73010
Table 4. SKY73010 Electrical Characteristics (2 of 2) (VCC = 5 V, IF = 2 MHz, LO input power = –3 dBm, TC = 25 °C, unless otherwise noted)
Parameter RF Output (900 MHz) Output –1 dB compression point CDMA output channel power CDMA ACPR Optimized carrier suppression Carrier suppression Sideband suppression Optimized sideband suppression Broadband noise floor Output impedance RF Output (1900 MHz) Output –1 dB compression point CDMA output channel power CDMA ACPR Optimized carrier suppression Carrier suppression Sideband suppression Optimized sideband suppression Broadband noise floor Output impedance Optimized I/Q phase and amplitude balance @ 20 MHz offset from carrier CDMA RF output power = –18 dBm Optimized I/Q DC offsets 20 28 –6.0 –3.5 –18 70 50 28 40 50 –155 2.0:1 –152 dBm dBm dBc dBc dBc dBc dBc dBm/Hz Ω Optimized I/Q phase and amplitude balance @ 20 MHz offset from carrier CDMA RF output power = –12 dBm Optimized I/Q DC offsets 50 24 32 50 –153 2.0:1 –150 35 45 –1.5 +1.5 –12 72 dBm dBm dBc dBc dBc dBc dBc dBm/Hz Ω Symbol Test Conditions Min Typical Max Units
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DATA SHEET • SKY73010
5.0 0.0 –5.0
4
2
POUT (dBm)
0
POUT (dBm)
1200
–10.0 –15.0 –20.0 –25.0 0 200 400 600 800 1000 450 MHz 900 MHz 1900 MHz
–2
–4
–6
–8 0 500 1000 1500 2000 2500 3000
VIN (mVp-p)
Frequency (MHz)
Figure 3. Continuous Wave (CW) Intermediate Frequency (IF) Input Voltage vs Output Power
Figure 4. Output 1 dB Compression Points vs RF Frequency
–40.0 885 kHz offset –45.0 –50.0 1.26 MHz offset
–40.0 885 kHz offset –45.0 –50.0 1.26 MHz offset
ACPR (dBc)
ACPR (dBc)
–55.0 –60.0 –65.0 –70.0 –75.0 –80.0 –25.0 –20.0 –15.0 –10.0 –5.0 0.0
–55.0 –60.0 –65.0 –70.0 –75.0 –80.0 –25.0 –20.0 –15.0 –10.0 –5.0 0.0
Channel POUT (dBm)
Channel POUT (dBm)
Figure 5. 450 MHz CDMA ACPR vs Channel Output Power
Figure 6. 900 MHz CDMA ACPR vs Channel Output Power
–40.0 –45.0 –50.0 885 kHz offset 1.26 MHz offset
ACPR (dBc)
–55.0 –60.0 –65.0 –70.0 –75.0 –80.0 –30.0
–25.0
–20.0
–15.0
–10.0
–5.0
0.0
Channel POUT (dBm)
Figure 7. 1900 MHz CDMA ACPR vs Channel Output Power
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DATA SHEET • SKY73010
R1 2.2 kΩ C9 0.10 µF C10 3.0 pF R2 2.2 kΩ C2 0.10 µF C7 0.10 µF SMA R4 2.2 kΩ C6 0.10 µF
1 16 15 14 13
C8 3.0 pF
C5 3.0 pF
GND
IREF
ISIG
QREF
QSIG
C1 0.10 µF SMA R3 2.2 kΩ C4 0.10 µF C3 3.0 pF
1 2 3 4 5 6 7 8
2
GND
GND
12
3
GND
SKY73010
GND
11
4
LO
VCC
10
C12 0.10 µF
GND GND VCC PD RF
C11 3.0 pF
SMA
8-Pin Header
5
6
7
8
9
C13 0.10 µF
C14 3.0 pF
SMA
S420
Figure 8. SKY73010 Evaluation Board Schematic
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DATA SHEET • SKY73010
Pin #1 4.04 ± 0.05
1.98 To metal pad edge 0.75
13 14 15 16 1
Pin #1 mark
4.04 ± 0.05
0.80 Typ
12
2
0.75
11 3
3.20
1.60
10
4
1.98 To metal pad edge
9
8
7
6
5
Detail A Exposed Metal 0.80 Typ
Top View
Bottom View
Solder Mask Exposed Metal
1.00 ± 0.10
Mold Substrate
Package Edge
0.38 (16x)
0.30 Ref
Side View
0.30 (16x) 0.40 (16x)
0.04
All measurements in millimeters
Detail A
C1445
Figure 9. SKY73010 16-Pin RFLGA Package Dimensions
Pin #1 Indicator
8.00 ± 0.10
4.00 ± 0.10
1.50 ± 0.10
2.00 ± 0.05 1.75 ± 0.10
B
5.50 ± 0.05
A
A
B
1.50 ± 0.25
0.292 ± 0.02
12.00 +0.30/–0.10
8o Max Notes: 1. Carrier tape material: black conductive polycarbonate or polysterene 2. Cover tape material: transparent conductive PSA 3. Cover tape size: 9.3 mm width 4. All measurements are in millimeters
7o Max
4.30 ± 0.10
1.73 ± 0.10
4.35 ± 0.10
A
B
S187
Figure 10. SKY73010 16-Pin RFLGA Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
103127C • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 21, 2004
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DATA SHEET • SKY73010
Ordering Information
Model Name SKY73010 300-2500 MHz Direct Quadrature Modulator Manufacturing Part Number SKY73010-11 TW12-D692 Evaluation Kit Part Number
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October 21, 2004 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 103127C