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CHR3694-QDG
RoHS COMPLIANT
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37-40GHz Integrated Down converter
GaAs Monolithic Microwave IC in SMD package
Description
The CHR3694-QDG is a multifunction chip, which integrates a balanced cold FET mixer, a time two multiplier, and a RF LNA including gain control. It is designed for a wide range of applications, typically commercial communication systems. The circuit is manufactured with a pHEMT process, 0.25m gate length, via holes through the substrate and air bridges. It is available in lead-free SMD package. A mirror version versus RF & LO access is available as CHR3794-QDG. Conversion gain (Sup. Mode) @ IF=2GHz
20 18 16 14 12 10 8 6 4 2 0 36
UMS R3694 YYWW
Main Features
Broadband performance 37-40GHz 12dB Gain 15dBc Image Frequency Rejection -5dBm IIP3 4dB Gain control DC power consumption: 4V, 150mA 24L-QFN4x4 ESD protected MSL Level 1
Conversion Gain (dB)
Gain @ 0V
Gain @ -2V
37
38
39
40
41
RF frequency (GHz)
Main Characteristics
Tamb = +25 VDL= VDX= 4V C, Symbol FRF FLO FIF G Parameter RF frequency range LO frequency range IF frequency range Conversion gain @ VGC=-2V Conversion gain @ VGC=0V
Ref. : DSCHA3694-QDG9077 - 18 Mar 09 1/18
Min 37 17.5 DC 8 11
Typ
Max 40 21 3.5
Unit GHz GHz GHz dB dB
10 14
ESD Protections: Electrostatic discharge sensitive device observe handling precautions!
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Departementale 128 - BP46 - 91401 Orsay Cedex France Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
Electrical Characteristics
37-40GHz Down Converter
Tamb= +25 VDL= VDX= 4V, Typical VGX = -0.9V & VG M= -0.7V C, Symbol FRF FLO FIF G Parameter RF frequency range LO frequency range IF frequency range Conversion gain @ VGC = -2V Conversion gain @ VGC = 0V PLO IFR NF LO Input power Image Frequency Rejection (1) Noise Figure @ VGC = -2V Noise Figure @ VGC = 0V IIP3 LO RL RF RL Gc Input IP3 Input LO Return Loss Input RF Return Loss Gain control range 13 Min 37 17.5 DC 8 11 10 14 1 15 5 4.5 -5 -10 -4 4 4 -2 100 110 140 150 0 180 190 -8 -3 6.5 6 Typ Max 40 21 3.5 Unit GHz GHz GHz dB dB dBm dBc dB dB dBm dB dB dB V V mA mA
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VDL,VDX Drain bias voltage VGC Idl + Idx Gain control voltage (2) Bias current @ VGC = -2V (3) Bias current @ VGC = 0V (3) (1) With external I/Q 90 hybrid coupler (2) Idl=50mA@VGC=-2V, Idl= 60mA@VGC=0V (3) Typically, Idl=60mA@VGC=0V, Idx=90mA
These values are representative of onboard measurements as defined on the drawing at page 16 for CHR3694-QDG and page 17 for CHR3794-QDG.
Ref. : DSCHA3694-QDG9077 - 18 Mar 09
2/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
37-40GHz Down Converter
Absolute Maximum Ratings (1)
Tamb = +25 C
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CHR3694-QDG
Symbol
Parameter Maximum drain bias voltage Maximum drain bias current Gate bias voltage Control gain voltage Maximum RF input power Maximum LO input power Maximum channel temperature Operating temperature range Storage temperature range
Values 4.5 200 -2.0 to +0 -3.0 to +4 10 10 175 -40 to +85 -55 to +125
Unit V mA V V dBm dBm C C C
VDL,VDX Idl + Idx VGM,VGX VGC P_RF P_LO Tch Ta Tstg
(1) Operation of this device above anyone of these paramaters may cause permanent damage.
Ref.: DSCHA3694-QDG9077 - 18 Mar 09
3/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
Device thermal performances
37-40GHz Down Converter
All the figures given in this section are obtained assuming that the QFN device is cooled down only by conduction through the package thermal pad (no convection mode www..com considered). The temperature is monitored at the package back-side interface (Tcase) as shown below. The system maximum temperature must be adjusted in order to guarantee that Tcase remains below than the maximum value specified in the next table. So, the system PCB must be designed to comply with this requirement. A derating must be applied on the dissipated power if the Tcase temperature can not be maintained below than the maximum temperature specified (see the curve Pdiss. Max) in order to guarantee the nominal device life time (MTTF).
DEVICE THERMAL SPECIFICATION : CHR3694-QDG Max. junction temperature (Tj max) : 144 C Max. continuous dissipated power @ Tcase= 85 C : 0,6 W (1) => Pdiss derating above Tcase = 85 C : 10 mW/ C (2) Junction-Case thermal resistance (Rth J-C) : <97 C/W (3) Min. package back side operating temperature : -40 C (3) Max. package back side operating temperature : 85 C Min. storage temperature : -55 C Max. storage temperature : 125 C
(1) Derating at junction temperature constant = Tj max. (2) Rth J-C is calculated for a worst case where the hotter junction of the MMIC is considered. (3) Tcase=Package back side temperature measured under the die-attach-pad (see the drawing below).
0,7 0,6 0,5 0,4 0,3 0,2 Pdiss. Max. (W) 0,1 0 -50 -25 0 25 50 75 100 125 Tcase (C) Pdiss. Max. (W)
Tcase
Example of QFN 16L 3x3 back-side view, temperature reference point (Tcase) location.
Ref. : DSCHA3694-QDG9077 - 18 Mar 09
4/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
37-40GHz Down Converter
Typical Measured Performances
CHR3694-QDG
Tamb = +25 VDX=VDL = 4V, Typical VGX = -0.9V & V GM= -0.7V, P_LO=1dBm C,
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These values are representative of onboard measurements (on connector access planes) as defined on the drawing 97445 page 16 for CHR3694-QDG and drawing 97342 page 17 for CHR3794-QDG. The board loss is estimated to 2 to 3dB in the frequency range. Conversion Gain @ Freq_IF= 2GHz, F_RF= 2xF_LO - F_IF, VGC=0V versus temperature
20 18 16 14 12 10 8 6 4 2 0 36
Conversion Gain (dB)
Gc max @ -40 C Gc max @ +25 C Gc max @ +75 C
37
38
39
40
41
RF frequency (GHz)
Conversion Gain @ Freq_IF= 2GHz, F_RF= 2xF_LO - F_IF, VGC=-2V versus temperature
20 18 16 14 12 10 8 6 4 2 0
Conversion Gain (dB)
Gc min @ -40 C Gc min @ +25 C Gc min @ +75 C
36
37
RF frequency (GHz)
38
39
40
41
Ref.: DSCHA3694-QDG9077 - 18 Mar 09
5/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
37-40GHz Down Converter
Conversion Gain @ Freq_IF= 3.5GHz, F_RF= 2xF_LO + F_IF, VGC=0V versus temperature
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20 18 16 14 12 10 8 6 4 2 0 36 37
Conversion Gain (dB)
Gc max @ -40 C Gc max @ +25 C Gc max @ +75 C
38
39
40
41
RF frequency (GHz)
Conversion Gain @ Freq_IF= 3.5GHz, F_RF= 2xF_LO + F_IF, VGC=-2V versus temperature
20 18 16 14 12 10 8 6 4 2 0 36
Conversion Gain (dB)
Gc min @ -40 C Gc min @ +25 C Gc min @ +75 C
37
38
39
40
41
RF frequency (GHz)
Ref. : DSCHA3694-QDG9077 - 18 Mar 09 6/18 Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
37-40GHz Down Converter
CHR3694-QDG
Image rejection @ Freq_IF= 2GHz, VGC=0V versus temperature
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40
Image rejection (dB)
35 30 25 20 15 10 5 0 17 17.5 18 18.5 19
LO frequency (GHz)
Noise figure @ Freq_IF= 3GHz, VGC=0V versus temperature
-40 C +25 C +75 C
8 7
Noise figure (dB)
6 5 4 3 2 1 0 36 37 38 39 40 41
RF frequency (GHz)
NF @ -40 C NF @ +25 C NF @ +75 C
Rem: The losses due to board are removed for noise measurements.
Ref.: DSCHA3694-QDG9077 - 18 Mar 09
7/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
37-40GHz Down Converter
Noise figure @ Freq_IF= 3GHz versus VGC at 25 C
8
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7
Noise figure (dB)
6 5 4 3 2 1 0 36 37 38 39 40 41
RF frequency (GHz)
NF @ 0V NF @ -2V
Rem: The losses due to board are removed for noise measurements.
Compression (Sup. mode) @ Freq_RF= 38GHz, Freq_IF= 2GHz versus P_RF & temperature
20 18 16 14 12 10 8 6 4 2 0
Gain (dB)
P1dB 38GHz @ -40 C P1dB 38GHz @ +25 C P1dB 38GHz @ +75 C
-24 -22 -20 -18 -16 -14 -12 -10
Input Power (dBm)
-8
Ref. : DSCHA3694-QDG9077 - 18 Mar 09
8/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
37-40GHz Down Converter
CHR3694-QDG
Input IP3 @ Freq_RF= 37.5GHz & 39.5GHz, Freq_IF= 3.5GHz versus VGC at 25 C
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0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -30
Input IP3 (dBm)
37.5GHz / VGC=0V 39.5GHz / VGC=0V 37.5GHz / VGC=-2V 39.5GHz / VGC=-2V
-25
-20
-15
-10
Input power double carrier (dBm)
LO Return Loss versus frequency
0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 14 15 16 17 18 19 20 21 22 23
Frequency (GHz)
Ref.: DSCHA3694-QDG9077 - 18 Mar 09
LO Return Loss (dB)
9/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
37-40GHz Down Converter
RF Return Loss versus frequency & VGC
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0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20
RF Return Loss (dB)
VGC=0V VGC=-2V
30 31 32 33 34 35 36 37 38 39 40
Frequency (GHz)
Ref. : DSCHA3694-QDG9077 - 18 Mar 09
10/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
37-40GHz Down Converter
Package outline CHR3694-QDG (1)
CHR3694-QDG
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R3694
Matt tin, Lead Free Units From the standard
(Green) mm JEDEC MO-220 (VGGD)
123456789101112-
Nc Gnd Gnd LO Gnd Gnd Nc VGX VDX VGM VGC VDL
131415161718192021222324-
Gnd Gnd RF Gnd Gnd Nc Nc Nc Q Gnd Gnd I
25- GND
Ref.: DSCHA3694-QDG9077 - 18 Mar 09
11/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
Package outline CHR3794-QDG (1)
37-40GHz Down Converter
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R3794
Matt tin, Lead Free Units From the standard
(Green) mm JEDEC MO-220 (VGGD)
123456789101112-
Nc Gnd Gnd RF Gnd Gnd VDL VGC VGM VDX VGX Nc
131415161718192021222324-
Gnd Gnd LO Gnd Gnd Nc I Gnd Gnd Q Nc Nc
25-
GND
(1)
The package outline drawing included to this data-sheet is given for indication. Refer to the application note AN0017 available at http://www.ums-gaas.com for exact package dimensions.
It is strongly recommended to ground all pins marked "Gnd" through the PCB board. Ensure that the PCB board is designed to provide the best possible ground to the package.
Ref. : DSCHA3694-QDG9077 - 18 Mar 09
12/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
37-40GHz Down Converter
Definition of the Sij reference planes
CHR3694-QDG
The reference planes used for Sij measurements given above are www..com symmetrical from the symmetrical axis of the package (see drawing beside). The input and output reference planes are located at 3.18mm offset (input wise and output wise respectively) from this axis. Then, the given Sij parameters incorporate the land pattern of the evaluation motherboard recommended at the page 16.
3.1 8
3.1 8
Recommended package footprint
Refer to the application note AN0017 available at http://www.ums-gaas.com for package foot print recommendations.
SMD mounting procedure
The SMD leadless package has been designed for high volume surface mount PCB assembly process. The dimensions and footprint required for the PCB (motherboard) are given in the drawings above. For the mounting process standard techniques involving solder paste and a suitable reflow process can be used. For further details, see application note AN0017.
Ref.: DSCHA3694-QDG9077 - 18 Mar 09
13/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
Notes
37-40GHz Down Converter
Due to ESD protection, LO and RF access are DC grounded, an external capacitance might be requested to isolate the product from external voltage that could be present on the RF access. ESD protections are also implemented on each gate access: VGX, VGM and VGC. www..com application note AN0020 available at http://www.ums-gaas.com for general ESD Refer to the recommendations.
CHR3694-QDG
VD VG VGM VDX VGX
RF
LO
Q
I
CHR3794-QDG
VGX VDX VGM VG VD
RF
LO
I
Q
Ref. : DSCHA3694-QDG9077 - 18 Mar 09
14/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
37-40GHz Down Converter
Notes
CHR3694-QDG
The biasing circuits of the stages of the circuit are given in the schemes below.
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Vd=4V
1.9k 1.9k 1.9k IN 26
Stage 2 Stage 1 Self-biased Self-biased Gain control 100
9 OUT
Stage 3 Self-biased
26
21
100
60
100
60 150
LNA
Vgc=-2V
0V
Vdx=4V
1.23k 42 1.23k 10 Stage 2 times multiplier 200 8 LO OUT Stage Buffer 2 LO IN Stage Buffer 1 Self-biased 38 Self-biased 57
LO
Vgx
1.2k
0.5
Vgm
0.5
Ref. : DSCHR3694-QDG - February 09
15/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
Evaluation mother board
Compatible www..com
37-40GHz Down Converter
with the proposed footprint. Based on typically Ro4003 / 8mils or equivalent. Using a microstrip to coplanar transition to access the package. Recommended for the implementation of this product on a module board. Decoupling capacitors of 10nF 10% are recommended for all DC accesses. Coupleur Anaren 2-4GHz (See application note AN0017 for details).
Proposed Assembly board "97445" for CHR3694-QDG 24L-QFN4x4 products characterization
I
Q
Decoupling capacitor: 10nF
VGX VDX VGM VGC VDL
Ref. : DSCHA3694-QDG9077 - 18 Mar 09
16/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
37-40GHz Down Converter
CHR3694-QDG
Proposed Assembly board "97342" for CHR3794-QDG 24L-QFN4x4 products characterization
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VDL VGC
VGM
VGX VDX
Ref. : DSCHR3694-QDG - February 09
17/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHR3694-QDG
37-40GHz Down Converter
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Ordering Information
QFN 4x4 RoHS compliant package : Stick: XY = 20 Tape & reel: XY = 21 QFN 4x4 RoHS compliant package : Stick: XY = 20 Tape & reel: XY = 21 CHR3694-QDG/XY
CHR3794-QDG/XY
Information furnished is believed to be accurate and reliable. However United Monolithic Semiconductors S.A.S. assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of United Monolithic Semiconductors S.A.S.. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. United Monolithic Semiconductors S.A.S. products are not authorised for use as critical components in life support devices or systems without express written approval from United Monolithic Semiconductors S.A.S.
Ref. : DSCHA3694-QDG9077 - 18 Mar 09
18/18
Specifications subject to change without notice
Route Departementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09

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