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Preliminary Release
Low Cost MMIC Mixer 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
MD54-0006
V1.00
SOT-25
.114 2.9 . 0 7 5 1.90 .008 0.2 .008 0.20
+ .008 .063 - 004 + 0.20 1 . 6 0 - 0.10
. 1 1 0 .008 2 . 8 0 0.20
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.
. 0 3 1 + .004 - .007 0 . 8 0 + 0.10 - 0.18 . 0 1 6 + .004 - .002 + 0.10 0.40 - 0.05 . 0 0 2 .002 0 . 0 5 0.05 . 0 0 6 + .004 - .002 + 0.10 0.15 - 0.05 + .008 .043 - .004 1 . 1 0 + 0.20 - 0.10 .008 MIN 0.20 MIN
Ordering Information
Part Number MD54-0006 MD54-0006TR MD54-0006SMB Package SOT-25 5 Lead Plastic Forward Tape and Reel * Designer's Kit
* If specific reel size is required, consult factory for part number assignment.
Electrical Specifications RF = 1850 MHz (-10 dBm), LO = 1710MHz (+5 dBm), IF = 140 MHz, T 25C : A=
Parameter Conversion Loss Isolation LO to RF LO to IF RF to IF VSWR RF Port LO Port1 IF Port Input 1 dB Compression Two-Tone IM Ratio
2
Test Conditions
Units dB dB dB dB
Min. 20
Typ. 8.0 28 15 15 2.0:1 2.0:1 2.0:1
Max. 9.0
RF Freq. = 1850 MHz, LO =+5 dBm Two Tones at -10 dBm each Tone spacing = 100 kHz, IF = 140 Mhz
dBm dBc
12 55
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
1 Absolute Maximum Ratings
MD54-0006
V1.00
Functional Block Diagram
RF
1 5
Parameter RF Input Power
2
Absolute Maximum +27 dBm +27 dBm -40 C to +85 C -65 C to +150 C 4
LO Drive Power
2
Storage Temperature Operating Temperature
L1 IF
2 3
LO C1
1. Exceeding any one or combination of these limits may cause permanent damage. 2. Ambient Temperature (T) = + 25C A
R1
Pin Configuration
Pin No. 1 2 3 4 5 Pin Name RF Port IF Port LO Port GND GND Description RF Input IF Output LO Input Ground Ground
External Circuitry Parts List
LO Frequency Part R1 L1 C1 1500 MHz 470 ohms 6.8 nH 3.3 pF 1710 MHz 470 ohms 4.7 nH 2.2 pF 2300 MHz 820 ohms 2.7 nH 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
Layout View
Cross Section View
1
5 4
L1
RF Traces + Components RF Ground DC Routing
2
3
R1
C1
Customer Defined
The PCB dielectric between RF traces and RF ground layers should be chosen to reduce RF discontinuities between 5 0 lines and package pins. M/A-COM recommends an FR-4 dielectric thickness of 0.008" (0.2 mm) yielding a 5 0 line width of 0.015" (0.38 mm). The recommended metalization thickness is 1 ounce copper.
Specifications Subject to Change Without Notice.
2
M/A-COM Inc.
Low Cost MMIC Mixer Typical Performance Data
* *
MD54-0006
V1.00
Test Conditions for Down Converter Application: = 1850 MHz (-10 dBm), IF = 140 MHz , LO = 1710 MHz (+5 dBm), RF LO Port match shown on page 2. Test Conditions for Up Converter Application: = 1710 MHz (+5 dBm), IF = 140 MHz (-10 dBm), RF = 1850 MHz LO LO Port match shown on page 2. CONVERSION LOSS (UP/DOWN) vs. FREQUENCY
10 5 4
VSWR vs. FREQUENCY
Conversion Loss (dB)
VSWR
9
3 LO 2 RF
8
7 1700
1800
1900
2000
1 1700
1800
1900
2000
RF Frequency (MHz)
RF and LO Frequency (MHz)
TWO-TONE IMR vs. FREQUENCY
70 two tones @ -10 dBm each 60
ISOLATION vs. FREQUENCY
11
Conversion Loss (dB)
2000
Two-Tone IMR (dB)
10 9 8 7 1400
50
40 1700
1800
1900
1575
1750
1925
2100
RF Frequency (MHz)
RF Frequency (MHz)
Wide-Band Performance Data
Test Conditions for Wide-Band Application: RF = -10 dBm, IF = 140 MHz , LO = +11 dBm, LO Port resistively matched.Lower LO drive operation is available for narrow band performance using external reactive matching. The 3 dB IF bandwidth is 500 MHz. IF frequencies above 200 MHz can be optimized for low conversion loss by using external matching components. CONVERSION LOSS vs. FREQUENCY
11 75
TWO-TONE IMR vs. FREQUENCY
Conversion Loss (dB)
10 9 8 7 1400
Two-Tone IMR (dB)
1575 1750 1925 2100
60
45
30 1400
1575
1750
1925
2100
RF Frequency (MHz)
Specifications Subject to Change Without Notice.
RF Frequency (MHz)
M/A-COM Inc.
3
Low Cost MMIC Mixer Spurious Table (dBc)
(n) H a r m o n i c of LO 0x 1x 2x 3x 4x 38.3 27.3 21.4 10.5 9.0 -0.9 1.9 -6.0 X X 0x 41.3 39.9 30.1 30.1 36.1 36.4 0 0 8.1 8.3 1x Harmonic of RF (m) 45.4 52.5 69.0 70.5 36.0 45.8 44.8 55.5 45.5 54.4 2x 64.7 77.1 43.0 58.8 65.8 75.0 56.1 75.2 56.8 72.3 3x 57.0 78.7 68.3 76.8 64.3 78.0 65.0 78.3 72.9 74.3 4x
MD54-0006
V1.00
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. |nFRF -mFLO|, (RF = 0 dBm) |nFRF - mFLO|, (RF = -10 dBm) RF Frequency = 1850 MHz LO Frequency = 1710 MHz
Designer's Kit MD54-0006SMB
The MD54-0006SMB Designer's Kit allows for immediate evaluation of M/A-COM's MD54-0006. The Designer's Kit consists of an MD54-0006, an evaluation board, and a floppy disk containing typical performance data and a DXF file of the recommended PCB layout. The evaluation board consists of the recommended external surface mount circuitry and RF connectors mounted to a multi-layer PCB. The MD54-0006SMB evaluation PCB is shown below with all functional ports labeled.
Evaluation PCB + RF Connector Losses
Port Reference RF Port LO Port IF Port Approximate RF Loss 0.30 dB @ 1850 MHz 0.20 dB @ 1710 MHz 0.075 dB @ 140 MHz
RF
IF
LO
SOT MIXER AV10046
MIXER PCB
Specifications Subject to Change Without Notice.
4
M/A-COM Inc.

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