Low Cost MMIC Mixer
Preliminary Release
1400 MHz - 2100 MHz
Features
• +12 dBm Input Power @ 1 dB Compression
• High Isolation, 28 dB LO to RF
• +3 to +8 dBm LO Drive Level
• DC - 500 MHz 3 dB IF Bandwidth
• Does not require DC bias
• Ultra-Miniature SOT-25 plastic Package
Description
M/A-COM’s MD54-0006 is a passive mixer that achieves the
performance of a double balanced diode mixer in an ultra-miniature
SOT-25 package. The MD54-0006 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 MD54-0006 uses FETs as mixing elements to achieve very
wide dynamic range in a low cost plastic package. The mixer
operates with LO drive levels of +3 dBm to +8 dBm. The LO port
may be externally tuned for operation in various frequency bands.
M/A-COM's MD54-0006 is fabricated using a mature 0.5 micron
gate length GaAs MESFET process. The process features full
passivation for increased performance and reliability. The MD540006 is 100 % RF tested to ensure performance specification
compliance.
MD54-0006
V1.00
SOT-25
.114±.008
2.9±0.2
.075±.008
1.90±0.20
+.008
.063
- 004
+0.20
1.60
- 0.10
+.004
.031
- .007
+0.10
0.80
- 0.18
.016
0.40
Ordering Information
Part Number Package
MD54-0006 SOT-25 5 Lead Plastic
MD54-0006TR Forward Tape and Reel *
MD54-0006SMB Designer’s Kit
* If specific reel size is required, consult factory for part number
assignment.
+.004
- .002
+0.10
- 0.05
.110±.008
2.80±0.20
.002±.002
0.05±0.05
.006
0.15
+.004
- .002
+0.10
- 0.05
.008 MIN
0.20 MIN
.043
1.10
+.008
- .004
+0.20
- 0.10
Electrical Specifications: RF = 1850 MHz (-10 dBm), LO = 1710MHz (+5 dBm), IF = 140 MHz, T
= 25°°C
A
Parameter Test Conditions Units Min. Typ. Max.
Conversion Loss dB 8.0 9.0
Isolation LO to RF dB 20 28
LO to IF dB 15
RF to IF dB 15
VSWR RF Port 2.0:1
LO Port
1
2.0:1
IF Port 2.0:1
Input 1 dB Compression RF Freq. = 1850 MHz, LO =+5 dBm dBm 12
Two-Tone IM Ratio
2
Two Tones at -10 dBm each dBc 55
Tone spacing = 100 kHz, IF = 140 Mhz
1. With external LO Port matching. See functional diagram on Page 2.
2. IMR vs . RF Drive can be calculated by the formula: IMR=40-1.5*Pin
Specifications Subject to Change Without Notice.
M/A-COM Inc. 1
Low Cost MMIC Mixer MD54-0006
Absolute Maximum Ratings
1
Parameter Absolute Maximum
RF Input Power
LO Drive Power
2
2
+27 dBm
+27 dBm
Storage Temperature -40 °C to +85 °C
Operating Temperature -65 °C to +150 °C
1. Exceeding any one or combination of these limits may
cause permanent damage.
2. Ambient Temperature (T
) = + 25°C
A
Pin Configuration
Pin No. Pin Name Description
1 RF Port RF Input
2 IF Port IF Output
3 LO Port LO Input
4 GND Ground
5 GND Ground
V1.00
Functional Block Diagram
1
RF
2
IF
5
4
3
R1
L1
LO
C1
External Circuitry Parts List
LO Frequency
Part 1500 MHz 1710 MHz 2300 MHz
R1 470 ohms 470 ohms 820 ohms
L1 6.8 nH 4.7 nH 2.7 nH
C1 3.3 pF 2.2 pF 2.2 pF
1.The external LO matching network allows tuning from 1400 MHz
to 2300 MHz. The networks given above are intended to serve as
guidelines for matching in different bands.
2.All off-chip components are low-cost surface mount components
obtainable from multiple sources.
(0.060 in. x 0.030 in. or 0.080 in. x 0.050 in. )
Recommended PCB Configuration
Cross Section View
Layout View
1
2
5
4
3
L1
R1 C1
Specifications Subject to Change Without Notice.
The PCB dielectric between RF traces and RF ground layers
should be chosen to reduce RF discontinuities between 5 0 Ω
lines and package pins. M/A-COM recommends an FR-4
dielectric thickness of 0.008” (0.2 mm) yielding a 5 0 Ω line
width of 0.015” (0.38 mm). The recommended metalization
thickness is 1 ounce copper.
RF Traces + Components
RF Ground
DC Routing
Customer Defined
2 M/A-COM Inc.