SKY73032 Datasheet, PDF (5/11 Pages) Skyworks Solutions Inc. – 700 - 1000 MHz High Gain and Linearity Single Downconversion Mixer for 2G/3G Base Station Transceiver Applications

PRELIMINARY DATA SHEET • SKY73032 DOWNCONVERSION MIXER
Table 4. SKY73032 Electrical Specifications (2 of 2)
(Voltage Supply = +5 V, TC = +25 °C, LO = 0 dBm, RF Frequency = 870 MHz, IF Frequency = 200 MHz, LO Frequency = 1070 MHz, Unless
Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
RF port input return loss
ZIN_RF
With external matching
–14
dB
components
LO port input return loss
ZIN_LO
With external matching
–14
dB
components
IF port input return loss
ZOUT_IF
With external matching
–14
dB
components
Evaluation Board Description
The SKY73032 Evaluation Board is used to test the performance
of the SKY73032 downconversion mixer. An assembly drawing for
the Evaluation Board is shown in Figure 3 and the layer detail is
provided in Figure 4.
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
impedance as possible.
2. The ground pad of the SKY73032 provides critical electrical
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 SKY73032, refer
to the Package and Handling Information section of this Data
Sheet.
3. Skyworks recommends including external bypass capacitors
on the VCC voltage inputs of the device.
4. Components L3 and L4 (see Figure 5) are high-Q, low loss
inductors. These inductors must be able to pass currents in
excess of 200 mA DC.
5. Components R7 and R8 (see Figure 5) allow for external
adjustment of the IF amplifier bias points. For operation as
specified in Tables 3 and 4, these resistors are not required.
A schematic diagram for the SKY73032 Evaluation Board is
shown in Figure 5.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200625A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • February 15, 2007
5