SMA661ASTR STMicroelectronics, SMA661ASTR Datasheet

IC AMP GPS LOW NOISE SOT-666

SMA661ASTR

Manufacturer Part Number
SMA661ASTR
Description
IC AMP GPS LOW NOISE SOT-666
Manufacturer
STMicroelectronics
Datasheet

Specifications of SMA661ASTR

Current - Supply
8.5mA
Frequency
1575MHz
Gain
18dB
Noise Figure
1.15dB
Package / Case
SC-89-6, SOT-563F, SOT-666
Rf Type
GPS
Test Frequency
1.575GHz
Voltage - Supply
2.4V ~ 3V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
P1db
-

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Features
Applications
Description
The SMA661AS is the first low-noise amplifier
with integrated matching networks and embedded
power-down function. The chip, which requires
only one external input capacitor, drastically
reduces the application bill of materials and the
PCB area, resulting in an ideal solution for
compact and cost-effective GPS LNA.
Table 1.
March 2009
Power down function
Integrated matching networks
Low noise figure 1.15 dB @ 1.575 GHz
High gain 18 dB @ 1.575 GHz
High linearity (IIP3 = +3 dBm)
Temperature compensated
Unconditionally stable
ESD protection (HBM ± 2 kV)
70 GHz Silicon Germanium technology
GPS
SMA661ASTR
Order code
Device summary
Marking
661
Rev 5
The SMA661AS, using the ST's leading-edge
70 GHz SiGe BiCMOS technology, achieves
excellent RF performance at the GPS frequency of
1.575 GHz, in terms of power gain, noise Figure
and linearity with a current consumption of
8.5 mA.
The device is unconditionally stable and ESD
protected. All these features are steady over the
operating temperature range of -40
It's housed in ultra-miniature SOT666 plastic
package.
Fully integrated GPS LNA IC
Package
SOT666
(1.65 x 1.2 x 0.57 mm)
SOT666
SMA661AS
Tape and reel
Packing
o
C to +85
www.st.com
1/14
o
C.
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SMA661ASTR Summary of contents

Page 1

... PCB area, resulting in an ideal solution for compact and cost-effective GPS LNA. Table 1. Device summary Order code SMA661ASTR March 2009 Fully integrated GPS LNA IC The SMA661AS, using the ST's leading-edge 70 GHz SiGe BiCMOS technology, achieves excellent RF performance at the GPS frequency of 1 ...

Page 2

Contents Contents 1 Pins description and circuit schematic . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical specifications . . ...

Page 3

SMA661AS 1 Pins description and circuit schematic Table 2. Pins description Pin # Figure 1. Pin connection Figure 2. Application circuit schematic ...

Page 4

Electrical specifications 2 Electrical specifications 2.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V Supply voltage cc T Storage temperature stg T Operating ambient temperature a V Electrostatic discharge ESD V Electrostatic discharge ESD 2.2 Electrical characteristics (T ...

Page 5

SMA661AS 3 Typical performance (Vcc = 2 ohm, unless otherwise specified; measured according to Figure 3. Power gain vs. frequency -40 º +85 ºC ...

Page 6

Typical performance Figure 9. Current consumption vs. temperature 8.5 8.4 8.3 8.2 8.1 8 7.9 7.8 7.7 7.6 7.5 - (°C) Figure 11. Power down current vs. temperature -40 -15 10 ...

Page 7

SMA661AS Figure 12. Stability 5 4 2.5 2 1 (GHz) Typical performance 7/14 ...

Page 8

... RFout SMA661 SMA661AS 4 7p VPdown Type Manufacturer Case_A 0603 Murata (GRM188) 0603 Murata (GRM188) 0603 Murata (GRM188) Case_A 142-0711-841 (SMA_Female) 142-0711-841 (SMA_Female) SOT666 STMicroelectronics FR4 1 1uF Vcc 47p JP1 Function Various Supply Filter RF Bypass Input dc block / IIP3 improvement RF Bypass Various Supply Filter ...

Page 9

SMA661AS Figure 14. Evaluatio n Board Layo Figure 15. Evaluation board cross section Note: Gerber files of the SMA661AS evaluation board are available on request. Layout recommendation: Both lines from pin 2 and pin 5 to GND plane have to ...

Page 10

Package and packing informations 5 Package and packing informations 5.1 Package informations In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions ...

Page 11

SMA661AS Figure 17. Recommended footprint 5.2 Packing informations Figure 18. Reel description INTO CORE FOR A mm Min Typ Max 0.99 TAPE SLOT ACCESS HOLE TAPE START AT SLOT LOCATION 175 12.8 20.2 1.5 ...

Page 12

Package and packing informations Figure 19. Carrier tape requirements Figure 20. Device orientation 12/ USER DIRECTION OF FEED ...

Page 13

SMA661AS 6 Revision history Table 7. Document revision history Date 15-Jul-2005 20-Oct-2005 07-Jul-2006 04-Apr-2007 27-Mar-2009 Revision 1 Initial release. 2 Added: Evaluation Board Schematic & Layout. Changed to new template. 3 Added packing informations. Updated noise figure and high gain ...

Page 14

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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