MA-COM MD-108

MD-108
Double-Balanced Mixer,
5 - 500 MHz
Features
V 3.00
RH-3
Low Cost
Conversion Loss: 7 dB Typical
Impedance: 50 Ohms Nominal
Maximum Input Power: 400 mW max. @ 25°C,
Derated to 85°C @ 3.2 mW/°C
n IF Port Current: 50 mA Max.
n MIL-STD-883 Screening Available
n
n
n
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Description
Transformers convert the LO and RF paths to balanced
lines connecting to a low barrier, Schottky diode ring quad.
These transformers help provide excellent isolation between
ports. Conversion Loss is low. The direct connection of
the IF port to the diode quad allows these mixers to be used
as phase detectors and bi-phase modulators.
Pin Configuration
Pin No.
Function
Pin No.
Function
1
LO
5
LO
2
GND
6
GND
3*
IF
7*
IF
4
GND
8
RF
* P3 and P7 are connected together to make IF port.
Electrical Specifications1: TA = -55°C to +85°C
Parameter
Test Conditions
Frequency
Units
Min
Typ
Max
Frequency Range
RF, LO Ports
IF Port
5 - 500
DC - 500
MHz
MHz
—
—
—
—
—
—
5 - 150 MHz
150 - 500 MHz
dB
dB
—
—
—
—
7.0
9.0
5 - 150 MHz
150 - 500 MHz
5 - 150 MHz
150 - 500 MHz
5 - 150 MHz
150 - 500 MHz
dB
dB
dB
dB
dB
dB
40
35
35
25
25
20
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Conversion Loss
Isolation
LO to RF
LO to IF
RF to IF
DC Polarity
Negative, if LO input at Pin 1
DC Offset
RF Input
1 dB Compression
1 dB Desensitization
SSB Noise Figure
Within 1 dB of Conversion Loss
Max.
Typical Two Tone IM
Ratio
With –10 dBm input, each input 25
MHz and 35 MHz IF
mV
—
<1
—
dBm
dBm
—
—
+2.5
0
—
—
—
—
—
—
—
100 - 350 MHz
350 - 500 MHz
dB
dB
—
—
>55
>40
—
—
1. All specifications apply when operated at +7 dBm available LO power with 50 ohm source and load impedance.
Double-Balanced Mixer, 5 - 500 MHz
MD-108
V 3.00
Typical Performance Curves
Isolation (Input = +7 dBm)
Conversion Loss (LO = +7 dBm,
RF = -5 dBm, IF = 5 MHz)
L-R
Isolation (dB)
Conversion Loss (dB)
L-X
R-X
60
8
7
6
50
40
30
20
5
5
10
20
50
100
200
300
400
500
5
10
20
50
100
200
300
400
500
Frequency (MHz)
Frequency (MHz)
Conversion Loss vs. LO Power
(LO = 200 MHz, RF = 140 MHz @ -10
dBm, IF = 60 MHz)
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Ordering Information
Part Number
Package
MD-108 PIN
RH-3
Loss (dB)
10
8
6
4
-5
0
5
10
15
LO Power (dBm)
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
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