SKY73020-11 Skyworks Solutions Inc, SKY73020-11 Datasheet - Page 4

• Manufacturer Part Number: SKY73020-11
• Description: Up/Down Conv Mixer 5V 1GHz 36-Pin MCM
• Manufacturer: Skyworks Solutions Inc

Specifications of SKY73020-11

• Package: 36MCM
• Maximum Input Frequency: 1000 MHz
• Maximum Output Frequency: 250 MHz
• Operating Supply Voltage: 5 V

DATA SHEET • SKY73020-11 DOWNCONVERSION MIXER
Functional Description
The SKY73020-11 is a high gain diversity mixer, optimized for
base station receiver applications. The device consists of two
diversity channels (A and B), each consisting of a low-loss RF
balun, high linearity passive mixer, and a low-noise IF amplifier.
Two LO amplifiers (independent of channels A and B) are also
included that allow the SKY73020-11 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 for frequency hopping
applications (i.e., GSM).
RF Baluns and Passive Mixer
The RF baluns provide a single-ended input, which can easily be
matched to 50 Ω using a simple external matching circuit. The RF
baluns offer very low loss, and excellent amplitude and phase
balance.
The high linearity SKY73020-11 is a passive, double balanced
mixer that provides a very low conversion loss and an excellent
3
Additionally, the balanced nature of the mixer provides for high
port-to-port isolation.
LO Buffers and SPDT LO Switch
The LO buffers allow the input power of the SKY73020-11 to be in
the range of ±3 dBm. The LO section is optimized for low-side LO
injection. However, each of the two LOs can be driven over a wide
frequency range with only slight degradation in performance.
Table 2. SKY73020-11 Absolute Maximum Ratings
4
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
rd
Supply voltage (VCC_LO, VCC_RFB, VCC_IFB,
VCC_IFA, and VCC_RFA)
Supply current
RF input power
LO input power
Operating case temperature
Storage case temperature
Order Input Intercept Point (IIP3).
parameters set at or below their nominal value.
December 10, 2008 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 200362E
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
Parameter
VCC
I
P
P
T
T
CC
RF
LO
C
STG
Symbol
A high isolation SPDT switch allows the SKY73020-11 to be used
for frequency hopping applications. This switch provides greater
than 65 dB of LO1 to LO2 isolation:
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.
IF Amplifier
The SKY73020-11 includes high dynamic range IF amplifiers that
follow the passive mixers in the signal path. The outputs require a
supply voltage connection using inductive chokes. These choke
inductors should be high-Q and have the ability to handle 200 mA
or greater.
A simple matching network allows the output ports to be matched
to a balanced 200 Ω impedance. The IF amplifiers are optimized
for IF frequencies between 50 and 250 MHz. The IF amplifiers can
be operated outside of this range, but with a slight degradation in
performance.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY73020-11 are provided
in Table 2 and the recommended operating conditions in Table 3.
Electrical characteristics for the SKY73020-11 are provided in
Table 4.
Typical performance characteristics of the SKY73020-11 are
illustrated in Figures 3 through 39.
Minimum
–40
–40
LO_SEL Input
High
Low
Maximum
+150
420
+85
5.5
20
6
LO1 (pin 19) enabled
LO2 (pin 27) enabled
LO Path Selected
Units
dBm
dBm
mA
°C
°C
V