M A COM MD-161PIN Datasheet
Termination-Insensitive Mixer,
1 - 500 MHz
V 3.00
MD-161
Features
n Third Order Intermodulation Ratio is Insensitive to Port
Mismatches
n Conversion Loss: 6 dB Typical Midband
n DC Coupled IF Port
n High Level Phase Detector
n Impedance: 50 Ohms Nominal
n Maximum Input Power: 350 mW max. @ 25°C,
Derated to 85°C @ 3.2 mW/°C
n LO Power +24 dBm Max.
n IF Port Current: 50 mA Max.
n 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. Function Pin No. Function
1 GND 5 LO
2 GND 6 GND
3 GND 7 GND
4 IF 8 RF
FP-2
Electrical Specifications1: TA = -55°C to +85°C
Parameter Test Conditions Frequency Units Min Typ Max
Frequency Range RF, LO Ports
Conversion Loss 5 - 300 MHz
Isolation LO to RF
DC Polarity Positive — — — — —
DC Offset — — mV — <5 —
RF Input 1 dB Compression
SSB Noise Figure Within 1 dB of Conversion Loss
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.
With –10 dBm input, each tone and
IF Port
LO to IF
RF to IF
1 dB Desensitization
Max.
60 MHz IF
@ IF VSWR 3:1 dB — 3 —
1 - 500
DC - 500
1 - 500 MHz
1 - 500 MHz
1 - 500 MHz
1 - 300 MHz
300 - 500 MHz
dBm
— — — — —
100 MHz
500 MHz
MHz
MHz
dB
dB
dB
dB
dB
dB
dBm
dB
dB
—
—
—
—
25
30
20
17
—
—
—
—
+10
—
—
—
—
—
—
—
—
+7
50
55
—
—
7
8
—
—
—
—
—
—
—
—
Termination-Insensitive Mixer, 1 - 500 MHz
Typical Performance Curves
MD-161
V 3.00
Conversion Loss (LO @ +13 dBm,
IF @ 50 MHz)
10
9
8
7
6
Conversion Loss (dB)
5
4
1 10 100 200 300 400 500 600 700
Frequency (MHz)
Conversion Loss vs. LO Power
(RF @ 300 MHz, IF @ 50 MHz)
10
9
8
Isolation
60
50
40
30
20
Isolation (dB)
10
0
1 10 100 200 300 400 500 600 700
RF-IF LO-IF
Frequency (MHz)
LO-RF
3rd Order IM Ratio (LO @ +13 dBm,
RF @ -10 dBm)
3.0:1 Mismatch IF Port Matched
65
60
7
6
Conversion Loss (dB)
5
4
2 4 6 8 10 12 14 15
LO Power (dBm)
VSWR
3.0
2.5
2.0
VSWR
1.5
1.0
1 10 100 200 300 400 500 600 700
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.
LO IF RF
Frequency (MHz)
55
50
45
3rd Order Intermodulation Ratio (dB)
1 10 100 200 300 400 500 600 700
Frequency (MHz)
IF Port Response
2
1
Relative Loss (dB)
0
1 10 100 200 300 400 500 600 700
Frequency (MHz)
2
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