HMC128
v03.1007
GaAs MMIC DOUBLE-BALANCED
MIXER, 1.8 - 5.0 GHz
Typical Applications
The HMC128 is ideal for:
• Microwave & VSAT Radios
Features
Conversion Loss: 7 dB
LO to RF and IF Isolation: >36 dB
Input IP3: +18 dBm
No DC Bias Required
Die Size: 1.45 x 1.45 x 0.1 mm
3
MIXERS - CHIP
• Test Equipment
• Military EW, ECM, C
3
I
• Space Telecom
Functional Diagram
General Description
The HMC128 is a miniature double-balanced mixer
chip that can be used as an upconverter or downcon-
verter. The device is a passive diode/balun type mixer
with high dynamic range. Noise figure is essentially
equal to the conversion loss. The mixer can handle
larger signal levels than active mixers due to the high
third order intercept. MMIC implementation provides
exceptional balance in the circuit resulting in high LO/
RF and LO/IF isolations. This mixer can operate over
a wide LO Drive input of +9 to +15 dBm.
Electrical Specifi cations,
T
A
= +25° C, LO Drive = +15 dBm*
Parameter
Frequency Range, RF & LO
Frequency Range, IF
Conversion Loss
Noise Figure (SSB)
LO to RF Isolation
LO to IF Isolation
IP3 (Input)
IP2 (Input)
1 dB Gain Compression (Input)
35
27
15
45
5
Min.
Typ.
1.8 - 5.0
DC - 3.0
7
7
42
36
18
50
10
10
10
Max.
Units
GHz
GHz
dB
dB
dB
dB
dBm
dBm
dBm
* Unless otherwise noted, all measurements performed as downconverter, IF = 100 MHz
3-2
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC128
v03.1007
GaAs MMIC DOUBLE-BALANCED
MIXER, 1.8 - 5.0 GHz
Conversion Gain vs . Temperature
@ LO = +15 dBm
0
Isolation @ LO = +15 dBm
0
-10
CONVERSION GAIN (dB)
-5
ISOLATION (dB)
-20
-30
-40
-50
-60
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
1
1.5
2
2.5
FREQUENCY (GHz)
RF/IF
LO/RF
LO/IF
-10
-15
+25 C
+85 C
-55 C
-20
3
3.5
4
4.5
Frequency (GHz)
5
5.5
6
Conversion Gain vs. LO Drive
0
LO and RF Return Loss
0
CONVERSION GAIN (dB)
RETURN LOSS (dB)
-5
-5
-10
+9 dBm
+11 dBm
+13 dBm
+15 dBm
-10
-15
-15
RF
LO
-20
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
FREQUENCY (GHz)
-20
1
1.5
2
2.5
3
3.5
4
4.5
FREQUENCY (GHz)
5
5.5
6
IF Bandwidth @ LO = +15 dBm
0
Upconverter Performance
Conversion Gain vs. LO Drive
0
CONVERSION GAIN (dB)
-5
RESPONSE (dB)
-5
-10
-10
-15
IF CONVERSION LOSS
IF RETURN LOSS
-15
+ 9 dBm
+ 11 dBm
+ 13 dBm
+ 15 dBm
-20
0
1
2
3
FREQUENCY (GHz)
4
5
-20
1
1.5
2
2.5
3
3.5
4
4.5
FREQUENCY (GHz)
5
5.5
6
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
3
HMC128
v03.1007
GaAs MMIC DOUBLE-BALANCED
MIXER, 1.8 - 5.0 GHz
Input IP3 vs.
Temperature @ LO = +15 dBm
30
Input IP3 vs. LO Drive
30
IP3 (dBm)
20
IP3 (dBm)
3
MIXERS - CHIP
25
+11 dBm
+13 dBm
+15 dBm
25
+ 25 C
+ 85 C
- 55 C
20
15
15
10
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
FREQUENCY (GHz)
10
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
FREQUENCY (GHz)
Input IP2 vs LO Drive
80
75
70
IP2 (dBm)
65
60
55
50
45
40
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
FREQUENCY (GHz)
+ 11 dBm
+ 13 dBm
+ 15 dBm
Input IP2 vs.
Temperature @ LO = +15 dBm
80
75
70
IP2 (dBm)
65
60
55
50
45
40
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
FREQUENCY (GHz)
+25 C
+85 C
-55 C
Input P1dB vs.
Temperature @ LO = +15 dBm
15
14
13
P1dB (dBm)
12
11
10
9
8
7
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
4.5
5
5.5
6
+ 25 C
+ 85 C
- 55 C
Harmonics of LO
nLO Spur @ RF Port
LO Freq. (GHz)
1.5
2.0
2.5
3.5
4.5
5.5
1
54
48
47
40
40
38
2
42
41
41
50
60
60
3
54
50
44
52
51
46
4
54
66
76
75
65
63
LO = +13 dBm
All values in dBc below input LO level measured at RF port.
3-4
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC128
v03.1007
GaAs MMIC DOUBLE-BALANCED
MIXER, 1.8 - 5.0 GHz
MxN Spurious @ IF Port
nLO
mRF
0
1
2
3
4
0
xx
2.8
62.3
74.3
>85
1
5.6
0
58.6
>85
>85
2
30.3
23.3
57.8
74.3
>85
3
11.1
31.5
60.3
65.8
>85
4
34.5
29.1
75.8
74.3
>85
Absolute Maximum Ratings
LO Drive
Storage Temperature
Operating Temperature
+27 dBm
-65 to +150 °C
-55 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
RF Freq.= 3.5 GHz @ -10 dBm
LO Freq.= 3.4 GHz @ +13 dBm
All values in dBc below IF power level.
Measured as downconverter
Outline Drawing
Die Packaging Information
[1]
Standard
WP-3
Alternate
[2]
NOTES:
1. ALL DIMENSIONS ARE IN INCHES [MM]
2. BOND PADS ARE .004” SQUARE
3. TYPICAL BOND PAD SPACING CENTER TO CENTER IS .006”
.1 EXCEPT AS SHOWN
4. DIE THICKNESS = .004” [.100 MM]
5. BACKSIDE METALIZATION: GOLD
6. BACKSIDE METAL IS GROUND
7. BOND PAD METALIZATION: GOLD
[1] Refer to the “Packaging Information” section for die
packaging dimensions.
[2] For alternate packaging information contact Hittite
Microwave Corporation.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
3
HMC128
v03.1007
GaAs MMIC DOUBLE-BALANCED
MIXER, 1.8 - 5.0 GHz
Pad Descriptions
Pad Number
Function
Description
Interface Schematic
3
MIXERS - CHIP
1
LO
This pin is DC coupled and matched to 50 Ohms.
2
IF
This pin is DC coupled. For applications not requiring oper-
ation to DC, this port should be DC blocked externally using
a series capacitor whose value has been chosen to pass
the necessary IF frequency range. For operation to DC this
pin must not source or sink more than 2mA of current or die
non-function and possible die failure will result.
3
RF
This pin is DC coupled and matched to 50 Ohms.
GND
The backside of the die must connect to RF ground.
3-6
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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