Termination-Insensitive Mixer,
1 - 500 MHz
V 3.00
MD-161
Features
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FP-2
Third Order Intermodulation Ratio is Insensitive to Port
Mismatches
Conversion Loss: 6 dB Typical Midband
DC Coupled IF Port
High Level Phase Detector
Impedance: 50 Ohms Nominal
Maximum Input Power: 350 mW max. @ 25°C,
Derated to 85°C @ 3.2 mW/°C
LO Power +24 dBm Max.
IF Port Current: 50 mA Max.
MIL-STD-883 Screening Available
Description
The unique design of the termination insensitive mixer
(TIM) enables it to apply high reverse voltage to diodes
during their “off” phase, in the LO cycle. This allows for
higher power level performance with minimum distortion.
In addition the TIM has internal loads that provide a good
match and also absorb mixer generated LO frequency
terms. Combined, these features give the mixer its
insensitivity to external mismatches, plus superior VSWR.
Pin Configuration
Pin No.
1
2
3
4
Function
GND
GND
GND
IF
Pin No.
5
6
7
8
Function
LO
GND
GND
RF
Electrical Specifications
1
: T
A
= -55°C to +85°C
Parameter
Frequency Range
Conversion Loss
Isolation
LO to RF
LO to IF
RF to IF
Positive
—
1 dB Compression
1 dB Desensitization
Within 1 dB of Conversion Loss
Max.
With –10 dBm input, each tone and
60 MHz IF
@ IF VSWR 3:1
—
100 MHz
500 MHz
Test Conditions
RF, LO Ports
IF Port
Frequency
1 - 500
DC - 500
5 - 300 MHz
1 - 500 MHz
1 - 500 MHz
1 - 500 MHz
1 - 300 MHz
300 - 500 MHz
—
—
Units
MHz
MHz
dB
dB
dB
dB
dB
dB
—
mV
dBm
dBm
—
dB
dB
dB
Min
—
—
—
—
25
30
20
17
—
—
—
—
—
—
—
—
Typ
—
—
—
—
—
—
—
—
—
<5
+10
+7
—
50
55
3
Max
—
—
7
8
—
—
—
—
—
—
—
—
—
—
—
—
DC Polarity
DC Offset
RF Input
SSB Noise Figure
Typical Two Tone IM
Ratio
3rd Order
Intermodulation Ratio
Degradation
1. All specifications apply when operated at +13 dBm available LO power with 50 ohm source and load impedance.
This product contains elements protected by United States Patent Number 4,224,572.
Termination-Insensitive Mixer, 1 - 500 MHz
Typical Performance Curves
Conversion Loss (LO @ +13 dBm,
IF @ 50 MHz)
10
60
50
MD-161
V 3.00
Isolation
RF-IF
LO-IF
LO-RF
Conversion Loss (dB)
9
Isolation (dB)
8
7
6
5
4
1
10
100
200
300
400
500
600
700
40
30
20
10
0
1
10
100
200
300
400
500
600
700
Frequency (MHz)
Frequency (MHz)
Conversion Loss vs. LO Power
(RF @ 300 MHz, IF @ 50 MHz)
3rd Order Intermodulation Ratio (dB)
10
65
3rd Order IM Ratio (LO @ +13 dBm,
RF @ -10 dBm)
3.0:1 Mismatch
IF Port Matched
Conversion Loss (dB)
9
8
7
6
5
4
2
4
6
8
10
12
14
15
60
55
50
45
1
10
100
200
300
400
500
600
700
LO Power (dBm)
Frequency (MHz)
VSWR
LO
3.0
IF
RF
IF Port Response
2
2.5
2.0
Relative Loss (dB)
1
10
100
200
300
400
500
600
700
VSWR
1
1.5
1.0
0
1
10
100
200
300
400
500
600
700
Frequency (MHz)
Frequency (MHz)
Specifications subject to change without notice.
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North America:
Tel. (800) 366-2266
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Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
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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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Termination-Insensitive Mixer, 1 - 500 MHz
MD-161
V 3.00
Ordering Information
Part Number
MD-161 PIN
Package
FP-2
Specifications subject to change without notice.
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North America:
Tel. (800) 366-2266
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Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
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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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