SKY12339-350LF Skyworks Solutions Inc, SKY12339-350LF Datasheet

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SKY12339-350LF

Manufacturer Part Number
SKY12339-350LF
Description
ATTENUATOR DGTL GAAS 5BIT QFN-16
Manufacturer
Skyworks Solutions Inc
Datasheet

Specifications of SKY12339-350LF

Attenuation Value
1dB ~ 31dB
Tolerance
±0.3dB
Frequency Range
400MHz ~ 3GHz
Impedance
50 Ohm
Package / Case
16-WQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
863-1294-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SKY12339-350LF
Manufacturer:
SKYWORKS/思佳讯
Quantity:
20 000
DATA SHEET
SKY12339-350LF: 0.4-3.0 GHz 5-Bit Digital Attenuator
(1 dB LSB)
Applications
• WiMAX, GSM, CDMA, WCDMA, WLAN, Bluetooth
• Telecommunications and instrumentation
Features
• Broadband operation: 0.4 to 3.0 GHz
• Attenuation: 31 dB
• LSB attenuation: 1 dB
• Low insertion loss: 1.2 dB @ 900 MHz
• Positive voltage operation: 4.5 to 5.5 V
• Low current consumption: 1.5 mA typical @ 5 V
• Small, QFN (16-pin, 3 x 3 mm) package (MSL1, 260 °C per
mobile radio base stations or terminal equipment
JEDEC J-STD-020)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201143C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 17, 2011
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Description
The SKY12339-350LF is a monolithic, GaAs binary-weighted five-
bit single positive control voltage digital attenuator. The device
operates from 0.4 to 3.0 GHz. DC power consumption is very low,
typically 1.5 mA, with a supply voltage of 5 V.
The SKY12339-350LF has an LSB of 1 dB and total attenuation of
31 dB. The two RF ports are bilateral; each can be used as the RF
input or the RF output. An external supply voltage of 4.5 to 5.5 V is
required.
The SKY12339-350LF is comprised of five cascaded fixed
attenuators, each of which has a shunt bypass switch. Beginning
at the 1 dB LSB, each succeeding fixed attenuator produces twice
the attenuation of the preceding stage.
The state of each bypass switch is controlled by the logic level
voltage applied to the associated control voltage input. A logic
high voltage closes the associated switch, which bypasses that
fixed attenuator stage; a logic low opens the switch to force the
input signal to that stage through the associated attenuator.
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.
Figure 1. SKY12339-350LF Block Diagram
1

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SKY12339-350LF Summary of contents

Page 1

... The device operates from 0.4 to 3.0 GHz. DC power consumption is very low, typically 1.5 mA, with a supply voltage The SKY12339-350LF has an LSB and total attenuation of 31 dB. The two RF ports are bilateral; each can be used as the RF input or the RF output. An external supply voltage of 4 required ...

Page 2

... The state of the SKY12339-350LF is determined by the logic provided in Table 4. Name Description Ground No connection RF input/output block is required. Control voltage input for 16 dB weighted bit Control voltage input for 8 dB weighted bit Control voltage input for 4 dB weighted bit Control voltage input for 2 dB weighted bit ...

Page 3

... Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201143C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 17, 2011 DATA SHEET • SKY12339-350LF 5-BIT DIGITAL ATTENUATOR Symbol ...

Page 4

... DATA SHEET • SKY12339-350LF 5-BIT DIGITAL ATTENUATOR Typical Performance Characteristics ( +25 ° CTL OP Figure 3. Insertion Loss vs Frequency (0 dB State) Figure 5. Output Return Loss vs Frequency Figure 7. Attenuation vs Frequency, Normalized State Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 4 January 17, 2011 • ...

Page 5

... Figure 11. Table 5 provides the Bill of Materials (BOM) list for Evaluation Board components. Package Dimensions The PCB layout footprint for the SKY12339-350LF is shown in Figure 12. Typical case markings are noted in Figure 13. Package dimensions for the 16-pin QFN are shown in Figure 14, and tape and reel dimensions are provided in Figure 15. ...

Page 6

... DATA SHEET • SKY12339-350LF 5-BIT DIGITAL ATTENUATOR Figure 10. SKY12339-350LF Evaluation Board Assembly Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 6 January 17, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201143C ...

Page 7

... Figure 11. SKY12339-350LF Evaluation Board Schematic Diagram Table 5. SKY12339-350LF Evaluation Board Bill of Materials Component C1 C10 C11 C12 C13 C14 C15 C16 SMA PCB adaptor J2 SMA PCB adaptor Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201143C • ...

Page 8

... DATA SHEET • SKY12339-350LF 5-BIT DIGITAL ATTENUATOR Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 8 January 17, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201143C Figure 12. SKY12339-350LF PCB Layout Footprint ...

Page 9

... Figure 14. SKY12339-350LF 16-Pin QFN Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201143C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 17, 2011 DATA SHEET • SKY12339-350LF 5-BIT DIGITAL ATTENUATOR 9 ...

Page 10

... DATA SHEET • SKY12339-350LF 5-BIT DIGITAL ATTENUATOR Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 10 January 17, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201143C Figure 15. SKY12339-350LF Tape and Reel Dimensions ...

Page 11

... Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201143C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 17, 2011 DATA SHEET • SKY12339-350LF 5-BIT DIGITAL ATTENUATOR Manufacturing Part Number ...

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