M/A-COM’s MD54-0005 is a passive mixer that achieves the
performance of a double balanced diode mixer in an ultraminiature SOT-25 package. The MD54-0005 is ideally suited
for use where high level RF signals and very wide dynamic
range are required. Typical applications include frequency
up/down conversion, modulation, and demodulation in receivers
and transmitters for basestation and portable systems.
The MD54-0005 employs GaAs FETs as mixing elements to
achieve a very wide dynamic range in a low cost plastic package. The mixer operates with LO drive levels of +3 d Bm to +8
dBm. The LO port may be externally tuned for operation in
various frequency bands.
M/A-COM's GaAs IC is fabricated using a mature 0.5 micron
gate length GaAs MESFET process. The process features full
passivation for increased performance and reliability.
SOT-25 Plastic Package
.114±.008
0.2
2.9
.075±.008
0.20
1.90
.008
063
.031
0.80
.60
+.004
- .007
+0.10
- 0.1 8
004
0.20
0.10
.016
.40
+.004
- .002
+0.10
- 0.0 5
.110±.008
2.80± 0.20
002± .002
.05±0.05
.006
.15
.004
- .00 2
+0.10
- 0.0 5
008 MIN
0.20 MIN
.043
.10
Ordering Information
Part NumberPackage
MD54-0005SOT-363 Plastic Package
MD54-0005TRForward Tape and Reel
MD54-0005SMBDesigner’s Kit
1. If specific reel size is required, consult factory for part number
assignment.
1. All off-chip components are low-cost surface mount components
obtainable from multiple sources. (.060 in x .030 in or x .050 in)
GND
5
GND
4
L1
C1
1
LO
Recommended PCB Configuration
Layout View
L1
R1
C1
Cross Section View
RF Traces + Components
RF Ground
DC Routing
Customer Defined
The PCB dielectric between RF traces and RF ground layers
should be chosen to reduce RF discontinuities between 50
lines and package pins. M/A-COM recommends an FR-4 dielectric thickness of 0.008”(0.2 mm) yielding a 50 Ω line width of
0.015”(0.38 mm). The recommended metalization thickness is
1 oz. copper.
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
V2.00
Low Cost MMIC Mixer, 800 - 1000 MHzMD54-0005
Typical Performance Curves
1, 2
Conversion Loss vs. FrequencyVSWR vs. Frequency
11
10.5
10
9.5
9
8.5
8
7.5
CONVERSION LOSS (dB)
7
8008509009501000
RF FREQUE NCY (MHz)
Two-Tone IMR vs. Frequency
70
65
60
55
50
45
40
35
TWO-TONE IMR (dBc)
30
8008509009501000
RF FREQUENCY (M Hz)
RF = -10 dBm each tone
5
4.5
4
3.5
3
2.5
VSWR
2
1.5
1
0.5
0
8008509009501000
LO
RF
RF FREQUENCY (MHz)
Isolation vs. Frequency
50
45
40
35
30
25
20
15
ISOLATION (dB)
10
5
0
8008509009501000
RF to IF
LO to RF
LO to IF
RF FREQUENCY (MHz)
1. Test Conditions for Down Converter Application: RF=900 MHz (-10 dBm), IF=60 MHz, LO=840 MHz (+5 dBm), LO Port match shown on Page 2.
2. Test Conditions for Up Converter Application: LO=840 MHz (+5 dBm), IF=60 MHz (-10 dBm), RF=900 MHz, LO Port match shown on Page 2.
Spurious Table (dBc)
(n)4x23.036.553.863.868.6
H
a
r
m
o
n
i
c
10.639.956.158.358.8
3x34.121.653.953.467.3
21.321.857.659.357.2
2x17.744.051.665.266.2
6.644.855.558.456.3
1x14.3057.063.767.0
4.0057.656.356.9
0xX13.950.259.167.2
X13.453.156.557.1
of
0x1x2x3x4x
LOHarmonic of RF (m)
The spurious table shows the spurious signals resulting from the
mixing of the RF and LO input signals assuming down conversion. Mixing products are indicated relative to the IF. The lower
frequency mixing term is shown for two different RF input
levels. The upper number is for an RF input power of 0 dBm;
the lower number is for an RF level of -10 dBm.
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
V2.00
Low Cost MMIC Mixer, 800 - 1000 MHzMD54-0005
S
A
L
R
Designer’s Kit MD54-005SMB
The MD54-0005SMB Designer's Kit allows for immediate evaluation of M/A-COM's MD54-0005. The evaluation board consists of an MD54-0005, recommended external surface mount
circuitry, and RF connectors, all mounted to a multi-layer FR-4
PCB. Other items included in the Designer's Kit are a floppy
disk (with typical performance data and a DXF file of the
recommended PCB layout) and any additional Application
Notes. The MD54-0005SMB evaluation PCB and block diagram are illustrated below with all functional ports labeled.