HMC908LC5
v02.1110
GaAs MMIC I/Q DOWNCONVERTER 9 - 12 GHz
Features
conversion Gain: 11 dB image rejection: 25 dB LO to rF isolation: -50 dB Noise Figure: 2.2 dB input iP3: +2 dBm 32 Lead 5x5mm ceramic smT Package: 25mm²
Typical Applications
The Hmc908Lc5 is ideal for: • Point-to-Point and Point-to-multi-Point radio
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mixers - i/q mixers, irms & receivers - smT
• military radar, eW & eLiNT • satellite communications • maritime & mobile radio
Functional Diagram
General Description
The Hmc908Lc5 is a compact GaAs mcm i/q downconverter in a leadless roHs compliant smT ceramic package. This device provides a small signal conversion gain of 11 dB with a noise figure of 2.2 dB and 25 dB of image rejection. The Hmc908Lc5 utilizes an LNA followed by an image reject mixer which is driven by an LO buffer amplifier. The image reject mixer eliminates the need for a filter following the LNA, and removes thermal noise at the image frequency. i and q mixer outputs are provided and an external 90° hybrid is needed to select the required sideband. The Hmc908Lc5 is a much smaller alternative to hybrid style image reject mixer downconverter assemblies, and it eliminates the need for wire bonding by allowing the use of surface mount manufacturing techniques.
Electrical Specifications, TA = +25 °C, IF = 100 MHz, LO = 0 dBm, VD1 = VD2 = 3V, VD3 = 5V*
Parameter Frequency range, rF Frequency range, LO Frequency range, iF conversion Gain (As irm) Noise Figure image rejection 1 dB compression (input) LO to rF isolation LO to iF isolation iP3 (input) Amplitude Balance Phase Balance supply current (iD1 + iD2) supply current (iD3) *Data taken as irm with external iF Hybrid 40 5 -3 15 8 min. Typ. 9 - 12 5.5 - 15.5 Dc - 3.5 11 2.2 25 -5 50 10 2 ±1 ±6 60 100 88 120 max. Units GHz GHz GHz dB dB dB dBm dB dB dBm dB Deg mA mA
10 - 1
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
HMC908LC5
v02.1110
GaAs MMIC I/Q DOWNCONVERTER 9 - 12 GHz
Data Taken As IRM With External IF Hybrid Conversion Gain vs. Temperature
20 15 CONVERSION GAIN (dB) 10 5 0 -5 -10 8 9 10 11 12 13 RF FREQUENCY (GHz)
+25C +85C -40C
Image Rejection vs. Temperature
0 -5 IMAGE REJECTION (dBc) -10 -15 -20 -25 -30 -35 -40 8 9 10 11 12 13 RF FREQUENCY (GHz)
+25C +85C -40C
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mixers - i/q mixers, irms & receivers - smT
10 - 2
Conversion Gain vs. LO Drive
20 15 CONVERSION GAIN (dB) 10 5 0 -5 -10 8 9 10 11 12 13 RF FREQUENCY (GHz)
-4 dBm -2 dBm 0 dBm 2 dBm 4 dBm 6 dBm
Return Loss
0
-5 RETURN LOSS (dB)
LO RF
-10
-15
-20
-25 5 7 9 11 13 15 17 FREQUENCY (GHz)
Input P1dB vs. Temperature
0 -2 -4 P1dB (dBm) -6 -8 -10 -12 8 9 10 11 12 13 RF FREQUENCY (GHz)
+25C +85C -40C
Input IP3 vs. LO Drive
8
LO = LO = LO = LO = -2 dBm 0 dBm 2 dBm 4 dBm
6
IP3 (dBm)
4
2
0
-2 8 9 10 11 12 13 RF FREQUENCY (GHz)
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
HMC908LC5
v02.1110
GaAs MMIC I/Q DOWNCONVERTER 9 - 12 GHz
Quadrature Channel Data Taken Without IF Hybrid Isolations
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IF Bandwidth*
40 30
CONVERSION GAIN RETURN LOSS
ISOLATION (dB)
RESPONSE (dB)
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mixers - i/q mixers, irms & receivers - smT
0 LO/IF1 -10 -20 -30 -40 RF/IF1 LO/IF2 RF/IF2
20 10 0 -10 -20 -30 -40 0.5
LO/RF
-50 -60 8 9 10 11 12 13 RF FREQUENCY (GHz)
1
1.5
2
2.5
3
3.5
IF FREQUENCY (GHz)
Amplitude Balance vs. LO Drive
2 1.5 AMPLITUDE BALANCE (dB) 1 0.5 0 -0.5 -1 -1.5 -2 8 9 10 11 12 13 RF FREQUENCY (GHz)
LO = LO = LO = LO = LO = -4 dBm -2 dBm 0 dBm 2 dBm 4 dBm
Phase Balance vs. LO Drive
20 15 PHASE BALANCE (degrees) 10 5 0 -5 -10 -15 -20 8 9 10 11 12 13 RF FREQUENCY (GHz)
LO = -4 dBm LO = -2 dBm LO = 0 dBm LO = 2 dBm LO = 4 dBm
Noise Figure vs. LO Drive, LO Frequency = 10 GHz
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-4 dBm -2 dBm 0 dBm 2 dBm 4 dBm
Noise Figure vs. LO Drive, IF Frequency = 100 MHz
6 5 NOISE FIGURE (dB) 4 3 2 1
-4 dBm -2 dBm 0 dBm 2 dBm 4 dBm
NOISE FIGURE (dB)
6
4
2
0 0.5
1
1.5
2
2.5
3
3.5
0 8.5
9.5
10.5 RF FREQUENCY (GHz)
11.5
12.5
IF FREQUENCY (GHz)
* Conversion gain data taken with external IF hybrid, LO frequency fixed at 10 GHz and RF varied
10 - 3
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
HMC908LC5
v02.1110
GaAs MMIC I/Q DOWNCONVERTER 9 - 12 GHz
Absolute Maximum Ratings
rF +5 dBm +20 dBm 4.0v 5.5v 150°c 0.65 W 71 °c/W -65 to +150 °c -55 to +85 °c class 0, 150v
MxN Spurious Outputs
nLO mrF 0 1 2 3 4 0 xx 16 92 92 92 1 27 0 66 92 92 2 36 34 57 81 92 3 37 68 70 57 92 4 92 61 92 92 92
LO Drive vD1, vD2 vD3 channel Temperature continuous Pdiss (T=85°c) (derate 9.56 mW/°c above 85°c) Thermal resistance (rTH) (channel to package bottom) storage Temperature Operating Temperature esD sensitivity (HBm)
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mixers - i/q mixers, irms & receivers - smT
10 - 4
rF = 10.6 GHz @ -20 dBm LO = 10.5 GHz @ 0 dBm Data taken without iF hybrid All values in dBc below iF power level.
eLecTrOsTATic seNsiTive Device OBserve HANDLiNG PrecAUTiONs
Outline Drawing
Package Information
Part Number Hmc908Lc5 [1] 4-Digit lot number xxxx [2] max peak reflow temperature of 260 °c Package Body material Alumina
NOTes: 1. PAcKAGe BODY mATeriAL: ALUmiNA 2. LeAD AND GrOUND PADDLe PLATiNG: 30 - 80 micrOiNcHes GOLD Over 50 micrOiNcHes miNimUm NicKLe 3. DimeNsiONs Are iN iNcHes [miLLimeTers] 4. LeAD sPAciNG TOLerANce is NON-cUmULATive 5. PAcKAGe WArP sHALL NOT exceeD 0.05mm DATUm 6. ALL GrOUND LeADs AND GrOUND PADDLe mUsT Be sOLDereD TO PcB rF GrOUND
Lead Finish Gold
msL rating msL1
[2]
Package marking [1] H908 xxxx
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
HMC908LC5
v02.1110
GaAs MMIC I/Q DOWNCONVERTER 9 - 12 GHz
Pin Descriptions
Pin Number 1, 5, 7 - 9, 13 - 16, 22 - 27, 30 - 32 2, 4, 10, 12, 17, 19, 21 3 Function N/c Description The pins are not connected internally; however, all data shown herein was measured with these pins connected to rF/Dc ground externally. These pins and ground paddle must be connected to rF/Dc ground. This pin is Ac coupled and matched to 50 Ohms. interface schematic
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mixers - i/q mixers, irms & receivers - smT
GND rF
6
vD3
Power supply for LO amplifier.
28, 29
vD1, vD2
Power supply for rF LNA.
18
iF2
20
iF1
This pin is Dc coupled. For applications not requiring operation to Dc, this port should be Dc blocked externally using a series capacitor whose value has been chosen to pass the necessary frequency range. For operation to Dc, this pin must not sink / source more than 3 mA of current or part non-function and possible failure will result.
11
LO
This pin is Ac coupled and matched to 50 Ohms.
Typical Application
Note: LsB and UsB is determined by GND on Hybrid
10 - 5
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
HMC908LC5
v02.1110
GaAs MMIC I/Q DOWNCONVERTER 9 - 12 GHz
Evaluation PCB
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mixers - i/q mixers, irms & receivers - smT
10 - 6
List of Materials for Evaluation PCB 111227 [1]
item J1, J2 J3, J4 J5 - J7 c1, c2, c3 c4, c5, c6 c7, c8, c9 r1, r2 U1 vc1 PcB [2] Description PcB mount smA rF connector, sri PcB mount smA connector, Johnson Dc Pin 100 pF capacitor 0402, Pkg. 1000 pF capacitor 0402, Pkg. 2.2 µF capacitor, Tantalum case A 0 Ohm resistor, 0402 Pkg. Hmc908Lc5 N/c 111225 evaluation Board
The circuit board used in the application should use rF circuit design techniques. signal lines should have 50 Ohm impedance while the package ground leads and exposed paddle should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground planes. The evaluation circuit board shown is available from Hittite upon request.
[1] reference this number when ordering complete evaluation PcB [2] circuit Board material: rogers 4350
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