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PRELIMINARY DATA SHEET
SKY73035: 2300 - 2700 MHz High Gain and Linearity Single Downconversion Mixer for 2G/3G Base Station Applications
Applications
* 2G/3G base station transceivers: - GSM/EDGE, CDMA, UMTS/WCDMA * Wi-Fi (802.11) * WiMAX (802.16) * 3GPP Long-Term Evolution * Wireless Local Loop * High performance radio links * Land mobile radio * Private mobile radio
Description
The SKY73035 is a fully integrated single mixer that includes Local Oscillator (LO) drivers, an LO switch, high linearity mixers, and large dynamic range Intermediate Frequency (IF) amplifiers. Low loss RF baluns have also been included to reduce design complications and lower system cost. The SKY73035 features an input IP3 of 24.0 dBm and a Noise Figure (NF) of 11 dB, making the device an ideal solution for high dynamic range systems such as 2G/3G base station receivers. The LO switch provides more than 40 dB of isolation between LO inputs and supports the switching time required for GSM/EDGE base stations. The SKY73035 is manufactured using a robust silicon BiCMOS process and has been designed for optimum long-term reliability. The SKY73035 single downconversion mixer is provided in a compact, 20-pin 5 x 5 mm Multi-Chip Module (MCM). A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1.
Features
* Operating frequency range: 2300 to 2700 MHz * IF frequency range: 50 to 500 MHz * Conversion gain: 5 dB * Input IP3: 24.0 dBm * Output IP3: 29.0 dBm * Noise figure: 11 dB * Integrated LO drivers * Integrated low loss RF baluns * High linearity IF amplifiers * On-chip SPDT LO switch (greater than 40 dB LO-to-LO isolation) * Small, MCM (20-pin, 5 x 5 mm) Pb-free package (MSL3, 260 C per JEDEC J-STD-020) Skyworks offers lead (Pb)-free RoHS (Restriction of Hazardous Substances) compliant packaging.
VCC_IFRF
IFA+ IFA-
RXIF
RF
LO1
LO2 LO_SEL VCC_LO
Figure 1. SKY73035 Block Diagram
S937
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
GND
17
RXIF
20
19
18
16
VCC_IFRF RF N/C GND GND
N/C
IF+
IF-
1 2 3 4 5
15 14 13 12 11
LO2 N/C GND GND LO1
6
7
8
9
10
VCC_LO
VCC_LOSW
LO_SEL
GND
N/C
S938
Figure 2. SKY73035 Pinout - 20-Pin MCM
Table 1. SKY73035 Signal Descriptions
Pin # 1 2 3 4 5 6 7 8 9 10 Name VCC_IFRF RF N/C GND GND VCC_LO N/C VCC_LOSW LO_SEL GND Description IF and RF DC supply, +5V RF input No connection Ground Ground LO DC supply, +5V No connection LO switch DC supply, +5V LO select switch control Ground Pin # 11 12 13 14 15 16 17 18 19 20 LO1 GND GND N/C LO2 N/C GND IF- IF+ RXIF Name LO1 input Ground Ground No connection LO2 input No connection Ground Negative IF output Positive IF output IF bias adjust Description
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PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
Functional Description
The SKY73035 is a high gain single mixer, optimized for base station receiver applications. The device consists of a low loss RF balun, high linearity passive mixer, and a low noise IF amplifier. An LO amplifier is also included that allow the SKY73035 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 Baluns and Passive Mixer The RF baluns provide a single ended input, which can easily be matched to 50 using a simple external matching circuit. The RF baluns offer very low loss, and excellent amplitude and phase balance. The high linearity SKY73035 is a passive, double balanced mixer that provides a very low conversion loss, and excellent 3rd Order Input Insertion Point (IIP3). Addtionally, 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 SKY73035 to be in the range of 3.0 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 only slight degradation in performance.
A high isolation SPDT switch allows the SKY73035 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. IF Amplifier The SKY73035 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 impedance. The IF amplifiers are optimized for IF frequencies between 50 and 500 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 SKY73035 are provided in Table 2 and the recommended operating conditions in Table 3. Electrical characteristics for the SKY73035 are provided in Table 4.
Table 2. SKY73035 Absolute Maximum Ratings
Parameter Supply voltage, +5 V Supply current RF input power LO input power Operating case temperature Junction temperature Storage case temperature VCC ICC PRF PLO TC TJ TSTG -40 -40 Symbol Minimum 4.5 Maximum 5.5 240 20.0 20.0 +85 +150 +125 Units V mA 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 parameters set at or below their nominal value. Nominal thermal resistance (junction to case) is 5.1 C/W.
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PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
Table 3. SKY73035 Recommended Operating Conditions
Parameter Supply voltage, +5 V Supply current LO input power LO select input: high low Operating case temperature RF frequency range LO frequency range (Note 1) IF frequency range VCC ICC PLO LO_SELH LO_SELL TC FRF FLO FIF -3.0 2.2 0.8 -40 2300 1800 50 +85 2700 2600 500 Symbol Minimum 4.75 Typical 5.00 200 0 +3.0 Maximum 5.25 Units V mA dBm V V C MHz MHz MHz
Note 1: The SKY73035 has been optimized for low-side LO injection. However, the LO can be used outside of the specified frequency range with degraded performance.
Table 4. SKY73035 Electrical Specifications (Voltage Supply = +5 V, TC = +25 C, LO = 0 dBm, RF Frequency = 2570 MHz, IF Frequency = 450 MHz, LO Frequency = 2120 MHz, Unless Otherwise Noted)
Parameter Conversion gain Noise Figure Noise Figure with a blocker signal Third order input intercept point G NF NFBLK IIP3 Blocking signal input power = +8 dBm Tone space = 800 kHz, input tone power = -10 dBm Tone space = 800 kHz, input tone power = -10 dBm PRF = -10 dBm PRF = -10 dBm 12.0 16.0 40 30 -40.0 -45.0 -20 +150 +250 0.5 ZIN_RF ZIN_LO ZOUT_IF With external matching components With external matching components With external matching components -14 -14 -14 24.0 Symbol Test Condition Min Typical 5 11 25 Max Units dB dB dB dBm
Third order output intercept point
OIP3
29.0
dBm
2RF - 2LO 3RF - 3LO Input 1 dB compression point Output 1 dB compression point LO1-to-LO2 isolation RF to IF isolation LO leakage: @ RF port @ IF port LO_SEL input LO switching time RF port input return loss LO port input return loss IF port input return loss
2x2 3x3 IP1dB OP1dB
-55 -80
dBc dBc dBm dBm dB dB dBm dBm A s dB dB dB
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PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
Evaluation Board Description
The SKY73035 Evaluation Board is used to test the performance of the SKY73035 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 SKY73035 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 SKY73035, 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 L5 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 SKY73035 Evaluation Board is shown in Figure 5.
J9
J5
C16 C15 R5 L3 C17 L4 C19 C20 C1 L1
R6
C13 L2
C14 R4
T2
C18 L5
J8
C12 C11 R3
R7 R8
J4
R1 C3
C2
U1
C10 C7 C8 R2 C9
C5 C4
J3 J1
C6 J2
S1072
Figure 3. SKY73035 Evaluation Board Assembly Diagram
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
Layer 1: Top - Metal
Layer 2: Ground
Layer 3: Power Plane
Layer 4: Solid Ground Plane
S1073
Figure 4. SKY73035 Evaluation Board Layer Detail
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PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
L3 DNI R6 0
3 4
R5 DNI C16 DNI
J9
C15 DNI L2 TBD
L4 470 nH
T2
2
R4 0
J5
1
6
VCC
C17 DNI C18 DNI R8 DNI R7 DNI
L5 470 nH
C13 TBD pF
C14 TBD pF
VCC
20 19 18 17 16
x
RXIF
GND
IF+
N/C
C19 DNI
C20 1 F
1
IF-
VCC
J4
R1 0 C3 TBD C2 TBD C1 L1 TBD TBD
x
15
R3 0
x
J8
C12 DNI
VCC_IFRF
2
LO2
14
RF
3
N/C
N/C
4
SKY73035
VCC_LOSW
13
C10 33 pF
C11 DNI
GND
12
GND
5
GND
11
R2 0 C7 33 pF C8 DNI C9 DNI
J3
GND
LO1
VCC_LO
LO_SEL
9 10
6
7
8
x
VCC
C4 1 F C5 33 pF C6 12 pF
GND
N/C
J2 Element Jumper
VCC
VCC
Notes: Values for all components are subject to change for matching purposes. Some component labels may be different than the corresponding component symbol shown here. Component values, however, are accurate as of the date of this Data Sheet.
S1070
Figure 5. SKY73035 Evaluation Board Schematic
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PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
Package Dimensions
Figure 6 shows the package dimensions for the 20-pin MCM, and Figure 7 provides the tape and reel dimensions.
PCB Design & SMT Assembly/Rework Guidelines for MCM-L Packages, document number 101752. 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.
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 SKY73035 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,
Electrostatic Discharge (ESD) Sensitivity
The SKY73035 is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions.
5X 4.8
4X 1.3 4X 0.65 0
Pin 1 Indicator
5
B C
Pin 20 Pin 1 indicator (See Detail B) Pin 1
4X 1.3
5
5X 4.8
4X 0.65 0
A
20X SMT Pad
0.15 A B C
Solder Mask Opening
A
1.1 0.1
0.15 A B C 0.1
0.2 A B C
Top View
Side View
Solder Mask Edges
Bottom View
0.2 x 0.2
Metal Pad Edge
3
0.45 0.05 0.3 0.03 0.45 0.1 (0.1)
3X R0.2 3
Detail A
All measurements are in millimeters. Dimensioning and tolerancing according to ASME Y14.5M-1994.
Detail B
S944
Figure 6. SKY73035 20-Pin MCM Package Dimensions
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PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
1.55 0.05 0.30 0.05
8.00 (P1)
4.00 (P0)
2.00 0.05
B
Pin #1 Indicator
1.75 0.10
5.50 0.05
A
5.35
A
5o Max. 1.70
B
1.50 Min. 5.35
B
Notes: 1. Carrier tape: black conductive polystyrene 2. Cover tape material: transparent conductive PSA 3. Cover tape size: 9.3 mm width 4. ESD surface resistivity is 5o Max.
A
S461
Figure 7. SKY73035 Tape and Reel Dimensions
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12.00 0.30
PRELIMINARY DATA SHEET * SKY73035 DOWNCONVERSION MIXER
Ordering Information
Model Name SKY73035 2300-2700 MHz Downconversion Mixer Manufacturing Part Number SKY73035-11 (Pb-free package) Evaluation Kit Part Number
Copyright (c) 2007 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. ("Skyworks") products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and "Breakthrough Simplicity" are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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