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PRELIMINARY DATA SHEET
SKY73022-11: 700 - 1000 MHz High Gain and Linearity Diversity Downconversion Mixer for 2G/3G Base Station Applications
Applications
* 2G/3G base station transceivers: - GSM/EDGE, CDMA, UMTS/WCDMA, iDEN * Land mobile radio * ISM band transceivers * High performance radio links * RF identification
Description
The SKY73022-11 is a fully integrated diversity 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 SKY73022-11 features an input IP3 of 26.5 dBm and a Noise Figure (NF) of 9.8 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 55 dB of isolation between LO inputs and supports the switching time required for GSM/EDGE base stations. The SKY73022-11 is manufactured using a robust silicon BiCMOS process and has been designed for optimum long-term reliability. The SKY73022-11 diversity downconversion mixer is provided in a compact, 36-pin 6 x 6 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.
VCC_IFA VCC_LO
Features
* Operating frequency range: 700 to 1000 MHz * IF frequency range: 40 to 300 MHz * Conversion gain: 9.0 dB * Input IP3: 26.5 dBm * Output IP3: 35.5 dBm * Noise figure: 9.8 dB * Integrated LO drivers * Integrated low loss RF baluns * High linearity IF amplifiers * On-chip SPDT LO switch (greater than 55 dB LO-to-LO isolation) * Small, MCM (36-pin, 6 x 6 mm) Pb-free package (MSL3, 260 C per JEDEC J-STD-020) Skyworks offers lead (Pb)-free RoHS (Restriction of Hazardous Substances) compliant packaging.
RFA LO1
IFA+ IFA-
RIFA
LO2 RFB LO_SEL
RIFB
IFB+ IFB-
VCC_IFB
VCC_LO
S643
Figure 1. SKY73022-11 Block 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 * SKY73022-11 DOWNCONVERSION MIXER
VCC_RFA
VCC_IFA
IFA+
GND
RIFA
29
IFA-
NC
NC
36
35
34
33
32
31
30
28 27 26 25 24 23 22 21 20 19
RFA NC GND VCC_LO GND VCC_LO GND NC RFB
NC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
LO2 GND GND GND LO_SEL GND VCC_LO GND LO1
VCC_RFB
VCC_IFB
IFB-
IFB+
RIFB
NC
NC
GND
NC
S646
Figure 2. SKY73022-11 Pinout - 36-Pin MCM
Table 1. SKY73022-11 Signal Descriptions
Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 RFA NC GND VCC_LO GND VCC_LO GND NC RFB VCC_RFB NC GND IFB+ IFB- RIFB VCC_IFB NC NC Name Description Channel A RF input No connect Ground DC supply, +5 V Ground DC supply, +5 V Ground No connect Channel B RF input Channel B RF DC supply, +5 V No connect Ground Positive channel B IF output Negative channel B IF output Channel B IF bias adjust Channel B IF DC supply, +5 V No connect No connect Pin # 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 LO1 GND VCC_LO GND LO_SEL GND GND GND LO2 NC RIFA VCC_IFA NC IFA+ IFA- GND NC VCC_RFA Name Description Local oscillator 1 input Ground DC supply, +5 V Ground Local oscillator select switch control Ground Ground Ground Local oscillator 2 input No connect Channel A IF bias adjust Channel A IF DC supply, +5 V No connect Positive channel A IF output Negative channel A IF output Ground No connect Channel A RF DC supply, +5 V
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
Functional Description
The SKY73022-11 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 SKY73022-11 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 using a simple external matching circuit. The RF baluns offer very low loss, and excellent amplitude and phase balance. The high linearity SKY73022-11 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 SKY73022-11 to be in the range of 3 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 SKY73022-11 to be used for frequency hopping applications. This switch provides greater than 55 dB of LO1 to LO2 isolation:
LO_SEL Input High Low LO Path Selected LO1 (pin 19) enabled LO2 (pin 27) 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 SKY73022-11 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 impedance. The IF amplifiers are optimized for IF frequencies between 40 and 300 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 SKY73022-11 are provided in Table 2 and the recommended operating conditions in Table 3. Electrical characteristics for the SKY73022-11 are provided in Table 4.
Table 2. SKY73022-11 Absolute Maximum Ratings
Parameter Supply voltage, +5 V (VCC1 - VCC7) 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 5.5 420 20 20 +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 center ground pad) is 5.1 C/W.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
Table 3. SKY73022-11 Recommended Operating Conditions
Parameter Supply voltage, +5 V (VCC1 - VCC7) 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 2.2 0.8 -40 700 900 40 +85 1000 1250 300 Symbol Minimum 4.75 Typical 5.00 380 0 +3 Maximum 5.25 Units V mA dBm V V C MHz MHz MHz
Note 1: The SKY73022-11 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. SKY73022-11 Electrical Specifications (1 of 2) (Voltage Supply = +5 V, TC = +25 C, LO = 0 dBm, RF Frequency = 900 MHz, IF Frequency = 200 MHz, LO Frequency = 1100 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 Symbol Test Condition Min Typical 9.0 9.2 20.5 26.5 Max Units dB dB dB dBm
Third order output intercept point
OIP3
35.5
dBm
2RF - 2LO 3RF - 3LO Input 1 dB compression point Output 1 dB compression point LO1-to-LO2 isolation Channel-to-channel 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
-70 -80 13.5 21.5 55 50 55 -44 -44 -20 +150 +250 0.5
dBc dBc dBm dBm dB dB dB dBm dBm A s dB dB dB
Zin_RF Zin_LO Zout_IF
With external matching components With external matching components With external matching components
14 14 14
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PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
Evaluation Board Description
The SKY73022-11 Evaluation Board is used to test the performance of the SKY73022-11 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 SKY73022-11 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 SKY73022-11, 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, L6, L14, and L15 (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 R1 and R2 (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 SKY73022-11 Evaluation Board is shown in Figure 5.
J9
J5
C34 L16 L17
C35 R4 T2
C29 L13 C33
C28 L12 C25
J4
L1 C2 L2
C32
J8
C26 C39 R2 C24 L11 R5
L14 C3 C38 C1
L15
C27
C23 C4 C20 C21 C22
J1
C5 C8 C7 C41 C6 L3 L4
J2
C17 R6 R1 C40 C13 C12 R3 T1 C11 C19 C18 L10
L5
L6
C14
J7
L18 C36 L19
J3
L8 C37 C15
L9 C16
J10
J6
S905
Figure 3. SKY73022-11 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 * SKY73022-11 DOWNCONVERSION MIXER
Layer 1: Top -- Metal
Layer 2: Ground
Layer 3: Power Plane
Layer 4: Solid Ground Plane
S904
Figure 4. SKY73022-11 Evaluation Board Layer Detail
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PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
L17 DNI R4 0 T2 C29 DNI C27 33 pF C26 1 F C35 DNI C34 DNI L13 8.2 nH C28 22 pF
L16 DNI
J9
DB714 L14 470 nH
L12 0
J5
VCC
C32 DNI C33 DNI
L15 470 nH
VCC
R5 DNI R2 DNI
VCC
36
35
x
34 33 32
31
x
30 29
28
x
IFA+
NC
NC
VCC_RFA
GND
IFA-
VCC_IFA
RIFA
NC
J4
L1 0
L2 18 nH C3 1.5 pF
C1 0
1
RFA NC
LO2 GND
27 26 25 C23 33 pF C24 DNI
L11 0 C25 DNI Element Jumper
J8
C2 DNI
x
2 3 GND 4 VCC_LO 5 6 7 GND VCC_LO GND NC
GND 24 GND C22 12 pF
VCC
J2
C21 33 pF
VCC VCC
C4 DNI
C5 33 pF
SKY73022
LO_SEL GND VCC_LO GND
23 22 21 20 19 C17 33 pF
J7
VCC_RFB
L3 0 C6 DNI
L4 18 nH
C8 0
x
8 9
L10 0 C18 DNI R1 DNI
C20 1 F C19 DNI
J3
RFB
VCC_IFB
LO1
IFB+
RIFB
17
IFB-
GND
NC
NC
C7 1.5 pF
10
11
12
13
14
15
16
18
x
x
VCC
L5 470 nH C13 1 F C14 33 pF R6 DNI
x
NC
VCC J6
VCC
C12 DNI C11 DNI L6 470 nH T1 DB714 C15 DNI L8 8.2 nH L19 DNI C37 DNI C36 DNI C16 22 pF L9 0 L18 DNI
J10
Note: The Evaluation Board can be converted to provide a differential output by removing components T1, T2, R3, and R4.
R3 0
S760_A
Figure 5. SKY73022-11 Evaluation Board Schematic
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
Package Dimensions
The PCB layout footprint for the SKY73022-11 is provided in Figure 6. Figure 7 shows the package dimensions for the 36-pin MCM, and Figure 8 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 SKY73022-11 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 SKY73022-11 is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
6.3 16X 0.5 Component Outline 0.15 0.35 0.25 0.05 0.05
16X 0.5 8X 0.075 6.3 8X 0.65 Soldermask Opening SMT Pad Detail Scale: 2X 9X This Rotation 9X Rotated 180o 9X Rotated 90o CW 9X Rotated 90o CCW Stencil and Metallization
0.75 0.85
Component Outline
8X 0.075 8X 0.65
Stencil aperture size for center ground pads should be 80% to 100% (by area) of the solder mask opening of the package.
Stencil Aperture Top View
6.4
6.3 2X 2.795 Pin 1 0.5 Pitch Typ
6.4 2X 2.795 1.9 6.3 4
3.8
1.9 3.8
Component Outline
Component Outline
0.25 Around Ground Pins 4
Metallization Top View
Note: The cross-hatched area represents the merger of the center ground pad +9 individual I/O ground pads. All I/O ground pads should have at least one via connected to internal ground planes for optimum electrical performance.
All measurements are in millimeters
Thermal Via Array. 0.3 mm on 0.5 mm pitch. Additional vias in common ground pad will improve thermal performance NOTE: thermal vias should be tented and filled with solder mask, 30-35 m Cu plating recommended.
Solder Mask Opening Top View
S1125
Figure 6. PCB Layout Footprint for the SKY73022-11 6 x 6 mm MCM
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PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
18X 2.9
Pin 1 Indicator
4X 2
Pin 36
4X 0.5 4X 1
C
6
B
4X 1.5
Pin 1 Indicator (See Detail D) Pin 1
A
4X 1 4X 1.5
4X 2
6
4X 0.5 2X 1.9 18X 2.9
1.1 0.1 0.15 A B C
A
0.1
3X R0.2
36x SMT Pad 0.15 A B C
2X 1.9
Top View
0.5 0.1 (0.1)
Side View
(0.2 x 0.2)
Bottom View
Solder Mask Opening 0.2 A B C
0.25 0.05
0.4 0.05
Detail D
Metal Pad Edge
All measurements are in millimeters Pads are solder mask defined on one edge and metal defined on three edges. Dimensioning and tolerancing according to ASME Y14.5M-1994
Detail A
S689_A
Figure 7. SKY73022-11 36-Pin MCM Package Dimensions
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PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
2.00 0.05 1.55 0.05 0.30 0.05 Pin #1 Indicator 8.00 4.00
B
1.75 0.10
5.50 0.05
A
6.30
A
5o Max. 1.70
B
1.50 Min. 6.30
B
Notes: 1. Carrier tape: black conductive polystyrene 2. Cover tape material: transparent conductive PSA 3. Cover tape size: 9.3 mm width 4. All dimensions are in millimeters
5o Max.
A
C1222
Figure 8. SKY73022-11 Tape and Reel Dimensions
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12.00 0.30
PRELIMINARY DATA SHEET * SKY73022-11 DOWNCONVERSION MIXER
Ordering Information
Model Name SKY73022-11 700-1000 MHz Downconversion Mixer Manufacturing Part Number SKY73022-11 (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.
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