SKY73070-11 Skyworks Solutions Inc, SKY73070-11 Datasheet - Page 7

• Manufacturer Part Number: SKY73070-11
• Description: IC MIXER DWNCONVRSN SGL 20-MCM
• Manufacturer: Skyworks Solutions Inc

Specifications of SKY73070-11

• Rf Type: CDMA, EDGE, GSM, UMTS, WCDMA
• Frequency: 700MHz ~ 1GHz
• Number Of Mixers: 1
• Gain: 9.5dB
• Noise Figure: 8.3dB
• Secondary Attributes: Down Converter
• Current - Supply: 210mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Package / Case: 20-MCM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 863-1085-2

Evaluation Board Description
The SKY73070 Evaluation Board is used to test the performance
of the SKY73070 downconversion mixer. An assembly drawing for
the Evaluation Board is shown in Figure 19 and the layer detail is
provided in Figure 20.
Circuit Design Configurations
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 and as low
2. The ground pad of the SKY73070 provides critical electrical
Figure 17. LO to IF Leakage vs Frequency and Temperature
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impedance as possible.
and thermal functionality. 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. Therefore, design the connection to the ground
pad to dissipate the maximum heat produced by the circuit
board. For more information on soldering the SKY73070, refer
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Figure 15. 2RF – 2LO vs Frequency and Temperature
200716F • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • January 21, 2008
839
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
854
854
RF Frequency (MHz)
RF Frequency (MHz)
869
869
884
884
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899
–40
+25
+85
–40
+25
+85
o
o
o
o
o
o
C
C
C
C
C
C
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3. Skyworks recommends including external bypass capacitors
4. Components L5 and L4 (see Figure 21) are high-Q, low loss
5. Components R7 and R8 (see Figure 21) allow for external
A schematic diagram for the SKY73070 Evaluation Board is
shown in Figure 21.
Figure 18. LO to RF Leakage vs Frequency and Temperature
Figure 16. RF to IF Isolation vs Frequency and Temperature
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to the Package and Handling Information section of this Data
Sheet.
on the VCC voltage inputs of the device.
inductors. These inductors must be able to pass currents in
excess of 200 mA DC.
adjustment of the IF amplifier bias points. To reduce the IF
amplifier bias current, connect pin 20 to ground through
external resistor R8. To increase the IF amplifier bias current,
connect pin 20 to VCC through external resistor R7. For
operation as specified in Tables 3 and 4, these resistors are
not required.
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DATA SHEET • SKY73070 DOWNCONVERSION MIXER
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854
854
RF Frequency (MHz)
RF Frequency (MHz)
869
869
884
884
899
899
+25
+85
+25
+85
–40
–40
o
o
o
o
o
o
C
C
C
C
C
C
914
914
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