IAM-91563 Datasheet, PDF (12/14 Pages) Agilent(Hewlett-Packard) – 0.8-6 GHz 3V Downconverter

Designs for Other Frequencies
The same design methodology described above can be
applied to other wireless frequency bands. Design ex-
amples and measurement results for the 900 MHz and 2.4
GHz bands are shown in Figures 33 and 34.
Vd
IF
250
MHz
100 pF
220 nH
50 Ω
1000 pF
220 pF
180 nH
GC
RF
GN
GND
IF
LO
15 pF
0.9 pF
50 Ω
10 nH
50 Ω
RF
2450
MHz
LO
2200
MHz
Measured results:
Conversion Gain = 10.6 dB
LO-RF Isolation = 21 dB
SSB Noise Figure = 7.1 dB
LO-IF Isolation = 33 dB
1 dB Compression = -7.0 dB RF-IF Isolation = 17 dB
P3 (Input) = -7 dBm
Operating conditions:
RF Frequency = 900 MHz
LO Drive Level = -5 dBm
IF Frequency = 80 MHz
DC Power = 3.0V @ 9 mA
LO Frequency = 980 MHz
Figure 33. 800-900 MHz Cellular and ISM Band Mixer.
100 pF
Vd
0.5 pF
50 Ω
IF
250
MHz
220 nH
50 Ω
500 pF
100 pF
68 nH
GC
RF
GN
GND
IF
LO
4.7 pF
3.3 nH
110 Ω, 3 mm
50 Ω
RF
2450
MHz
LO
2200
MHz
Measured results:
Conversion Gain = 7.7 dB
LO-RF Isolation = 16 dB
SSB Noise Figure = 11 dB
LO-IF Isolation = 35 dB
1 dB Compression = -8.7 dB RF-IF Isolation = 27 dB
IP3 (Input) = -7 dBm
Operating conditions:
RF Frequency = 2.45 GHz
LO Drive Level = -5 dBm
IF Frequency = 250 MHz
DC Power = 3.0V @ 9 mA
LO Frequency = 2.2 GHz
Figure 34. 2.4 GHz ISM Band Mixer.
SOT-363 PCB Footprint
A recommended PCB pad layout for the miniature SOT-
363 (SC-70) package used by the IAM-91563 is shown in
Figure 35 (dimensions are in inches). This layout provides
ample allowance for package placement by automated
assembly equipment without adding parasitics that could
impair the high frequency RF performance of the IAM-
91563. The layout is shown with a nominal SOT-363 pack-
age footprint superimposed on the PCB pads.
0.026
0.039
0.079
0.018
Dimensions in inches.
Figure 35. Recommended PCB Pad Layout for Avago’s SC70 6L/SOT-363
Products.
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