SRM-1016 데이터 시트보기 (PDF) - Sirenza Microdevices => RFMD
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SRM-1016 Datasheet PDF : 6 Pages
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SiGe Receive Mixer: General Test Set-Up
RF
-20dBm
RF+
RF Match
RF-
SRM-1016 SiGe Active Receive Mixer
SRM-1016
IF+
IF Match
IF-
IFOUT
For enhanced leakage
performance, transformers are
used to drive inputs differentially.
LO+
LO-
LO Match
RF sources are needed in addition to
an RF combiner for intermodulation
tests. The suggested tone spacing is
1MHz.
+1dBm
LO
The SRM-1016 utilizes an IF tank circuit to maximize per-
formance across the entire IF bandwidth. The off-chip
inductors L1 and L2 resonate with on-chip capacitors (4pF)
to provide IF tunability. Therefore, L1 and L2 must be
selected such that the resonance occurs at the desired IF.
The table below provides the inductor values required on
the evaluation board for some common intermediate fre-
quencies. By default, all evaluation boards are shipped
with L1 = L2 = 100nH, resulting in a 200 MHz resonant IF.
Also note, L1 and L2 should be placed within 1mm (0.039
in) of pins 9 and 10 for optimal performance.
IF (MHz) “typical”
70
150
200
300
L1, L2 (nH)
680
150
100
39
TOKO Part Number
LL2012-FHR68J
LL1608-FSR15J
LL1608-FSR10J
LL1608-FS39NJ
The following procedure may be used to ensure that the proper inductor values have been selected for a given IF:
1. Using the “General Test Set-Up” prepare the evaluation board for a conversion gain measurement.
2. Enable the “Max Hold” function on the spectrum analyzer and set the “SPAN” to 200 MHz.
3. Vary the LO frequency while maintaining a constant input frequency.
4. The resonance will be observed at the peak of the response.
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
6
http://www.sirenza.com
EDS-102145 Rev B
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