May 1, 2009 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 201017B
PRELIMINARY DATA SHEET • SKY73063 UP/DOWNCONVERSION MIXER
Functional Description
The SKY73063 is a high linearity, single up/downconversion
mixer, optimized for base station receiver applications. The device
consists of a low loss RF balun and high linearity passive mixer.
An LO amplifier is also included that allow the SKY73063 to
connect directly to the output of a Voltage Controlled Oscillator
(VCO). This eliminates the extra gain stages needed by most
discrete passive mixers. A Single Pole, Double Throw (SPDT)
switch has been included to select between two different LO
inputs (LO1 and LO2) for frequency hopping applications such as
GSM.
RF Balun and Passive Mixer
The RF balun provides a single ended input, which can easily be
matched to 50
Ω
using a simple external matching circuit. The
balun offers very low loss, and excellent amplitude and phase
balance.
The high linearity SKY73063 is a passive, double-balanced mixer
that provides a very low conversion loss, and excellent 3
rd
Order
Input Insertion Point (IIP3).
Additionally, the balanced nature of the mixer provides for high
port-to-port isolation.
LO Buffer and SPDT LO Switch
The LO buffer allows the input power of the SKY73063 to be in
the range of
±6
dBm. The LO section is optimized for high-side
LO injection. However, each of the two LOs can be driven over a
wide frequency range with some degradation in performance.
A high isolation SPDT switch allows the SKY73063 to be used for
frequency hopping applications. This switch provides greater than
40 dB of LO1 to LO2 isolation:
LO_SEL Input
High
Low
LO Path Selected
LO1 (pin 11) enabled
LO2 (pin 15) enabled
For applications that do not require frequency hopping, LO_SEL is
fixed to one state and the appropriate LO input is used. An internal
pull-down resistor enables the LO2 input.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY73063 are provided in
Table 2 and the recommended operating conditions in Table 3.
Electrical characteristics for the SKY73063 are provided in
Table 4.
Table 2. SKY73063 Absolute Maximum Ratings
Parameter
Supply voltage, +5 V
Supply current
RF input power
IF input power
LO input power
Operating case temperature
Junction temperature
Storage case temperature
VCC
I
CC
P
RF
P
IF
P
LO
T
C
T
J
T
STG
–40
–40
Symbol
Minimum
4.5
Maximum
5.5
100
+20
+20
+20
+85
+150
+125
Units
V
mA
dBm
dBm
dBm
°C
°C
°C
Notes:
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
The SKY73063 has been optimized for high-side LO injection. However, the LO can be used outside of the specified frequency range with degraded performance.
Table 4. SKY73063 Electrical Specifications (1 of 2)
(Voltage Supply = +5 V, T
C
= +25
°C,
LO = 0 dBm, RF Frequency = 1875 MHz, IF Frequency = 150 MHz, LO Frequency = 2025 MHz, Unless
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