CHM1483-QFG
12-16GHz Direct Quadrature Modulator
GaAs Monolithic Microwave IC in SMD leadless package
Description
The CHM1483-QFG is a packaged 12-
16GHz direct quadrature modulator which
integrates a double-balanced mixer (LO
suppression and Image Rejection) and a LO
buffer. It can be used for both LSB and USB
configurations.
The circuit is mainly dedicated to Point to
Point and Point to Multi-Point systems and
also well suited for a wide range of
microwave applications.
The circuit is manufactured with a pHEMT
process, 0.5µm gate length.
It is supplied in RoHS compliant SMD
package.
SMU
ASMUA
88
7663
A7663A
88
GWWYY
GWWYY
UMS
UMS
M1483
UMS
A3688A
A3667A
YYWW
A3688A
A3667A
YYWWG
YYWWG
RF Output Power & LO Leakage (dBm)
Main Features
■ RF Broadband performances: 12-16GHz
■ Input Broadband bandwidth: DC-1GHz
■ 10dB Conversion Losses
■ 25dBc Image Rejection
■ -30dBm LO leakage without cancelation
■ -70dBm LO leakage with cancelation
■ 0dBm LO input Power
■ 32L-QFN5x5
■ MSL2
-20
-25
-30
-35
-40
-45
-50
-55
-60
-65
-70
-75
-80
Main Electrical Characteristics
Tamb.= +25°C
Symbol
Parameter
F
RF
Output RF Frequency range
F
LO
LO Frequency range
F
IF
Base band bandwidth
L
c
Conversion Losses
UMS
1/10
RF Output : USB
RF Output : LSB
LO Leakag without canacelation
LO Leakage with cancelation
11
12
13
14
15
RF Frequency (GHz)
UMS
A3688A
A3667A
YYWWG
16
17
Min
12
12
DC
Typ
Max
16
16
1000
10
Unit
GHz
GHz
MHz
dB
Ref. : DSCHM1483-QFG2305 - 31 Oct 12
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Départementale 128 - BP46 - 91401 Orsay Cedex France
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
UMS
UMS
UMS
UMS
UMS
UMS
3688A
3667A
3667A
3688A
3667A
3667A
YWWG
YWWG
YWWG
YWWG
YWWG
YWWG
UMS
UMS
UMS
UMS
UMS
UMS
A3688A
A3667A
A3667A
A3688A
A3667A
A3667A
YYWWG
YYWWG
YYWWG
YYWWG
YYWWG
YYWWG
SMU
SMU
SMU
SMU
SMU
SMU
ASMUA
ASMUA
ASMUA
ASMUA
ASMUA
ASMUA
8863
7663
7663
8863
7663
7663
A8863A
A7663A
A7663A
A8863A
A7663A
A7663A
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
SMU
SMU
SMU
SMU
SMU
SMU
ASMUA
ASMUA
ASMUA
ASMUA
ASMUA
ASMUA
8863
7663
7663
8863
7663
7663
A8863A
A7663A
A7663A
A8863A
A7663A
A7663A
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
GWWYY
SMU
ASMU
88
7663
A7663
88
GWWY
GWWY
CHM1483-QFG
Electrical Characteristics
12-16GHz Direct Quadrature Modulator
Tamb.= +25°C, VD1 = VD2 = VD3 = +4V
Symbol
Parameter
F
RF
RF Frequency range
F
LO
LO Frequency range
F
BB
Baseband input 1dB bandwidth
L
c
Conversion Losses
(1)
P
LO
LO input power
LO_leak LO leakage
(1) (2)
LO_sup LO cancelation
(1) (3)
IM_rej
Image Rejection
(1)
RL
LO
LO Input Return Loss (@P
LO
=0dBm)
RL
RF
RF Input Return Loss
OIP3
Output IP3
IMD2
2
nd
order intermodulation ratio
N
Noise Floor
Amp_bal I/Q Amplitude balance
Ph_err Quadrature Phase error
V
I_DC
Baseband I DC voltage differential mode
(4)
V
Q_DC
Baseband Q DC voltage differential mode
(4)
V
BBI
Baseband I AC voltage differential mode
(5)
V
BBQ
Baseband Q AC voltage differential mode
(5)
VDx
DC supply voltage
VG
Mixer gate bias voltage
Idq
DC quiescent current
(1)
Min
12
12
DC
Typ
Max
16
16
1000
10
0
-30
-70
25
-8
-10
12
40
-150
-1
-7
-0.2
-0.2
-0.8
-0.8
4
-0.7
100
+1
+7
+0.2
+0.2
0.8
0.8
Unit
GHz
GHz
MHz
dB
dBm
dBm
dBm
dBc
dB
dB
dBm
dBc
dBm/Hz
dB
°
V
V
V
V
V
V
mA
Given F
BB
= 10MHz, P
LO
= 0dBm and V
BBI
= V
BBQ
= 50mV
pp
(Each baseband input
impedance single ended is 50Ω: i.e. P
BB_Total
= -16dB), for these conditions: P
RF
= -26dBm
(2)
LO leakage without cancelation (i.e. no DC tuning: V
I_DC
= V
Q_DC
= 0V)
(3)
LO leakage cancelation (i.e. with DC tuning on V
I_DC
and V
Q_DC
)
(4)
Use to cancel LO leakage. Differential mode means voltages through I and IB are in
opposition. Tuning adjustment are need for each frequency, temperature and LO power.
(5)
Peak to Peak Voltage.
These values are representative of onboard measurements as defined on the drawing in
paragraph "Evaluation mother board".
Ref. : DSCHM1483-QFG2305 - 31 Oct 12
2/10
Specifications subject to change without notice
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
12-16GHz Direct Quadrature Modulator
Absolute Maximum Ratings
(1)
CHM1483-QFG
Tamb.= +25°C
Symbol
Parameter
VDx
Drain bias voltage
Idq
DC quiescent current
VG
Gate bias voltage
Tj
Junction temperature
Ta
Operating temperature range
Tstg
Storage temperature range
(1)
Operation of this device above anyone of these parameters
damage.
Values
Unit
4.5
V
120
mA
-2 to +0.4
V
175
°C
-40 to +85
°C
-55 to +150
°C
may cause permanent
Typical Bias Conditions
Tamb.= +25°C
Symbol
Pad N
o
VD1
9
VD2
10
VD3
11
VG
27
Parameter
Drain 1 bias voltage
Drain 2 bias voltage
Drain 3 bias voltage
Mixer gate bias voltage
Values
4
4
4
-0.7
Unit
V
V
V
V
Ref. : DSCHM1483-QFG2305 - 31 Oct 12
3/10
Specifications subject to change without notice
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
CHM1483-QFG
12-16GHz Direct Quadrature Modulator
Device thermal performances
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 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 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 cannot be
maintained below the maximum temperature specified (see the curve Pdiss. Max) in order to
guarantee the nominal device life time (MTTF).
Ref. : DSCHM1483-QFG2305 - 31 Oct 12
4/10
Specifications subject to change without notice
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
12-16GHz Direct Quadrature Modulator
Typical on Board Measurements
Tamb.= +25°C, VD1 = VD2 = VD3 = +4V, Idq = 100mA
USB versus RF Frequency
F
BB
= 10MHz / V
BBI
= V
BBQ
= 50mVpp
P
LO
= 0dBm
-20
-21
-22
CHM1483-QFG
LSB Rejection versus RF Frequency
F
BB
= 10MHz / V
BBI
= V
BBQ
= 50mVpp
P
LO
= 0dBm
50
45
40
USB
RF Output Power (dBm)
-24
-25
-26
-27
-28
-29
-30
11
12
13
14
15
RF Frequency (GHz)
16
17
LSB Rejection (dBc)
-23
35
30
25
20
15
10
5
0
LSB Rejection
11
12
13
14
15
RF Frequency (GHz)
16
17
LO leakage versus RF Frequency
F
BB
= 10MHz / V
BBI
= V
BBQ
= 50mVpp
P
LO
= 0dBm
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
-55
-60
-65
-70
-75
-80
11
12
LO leakage versus LO Input Power
F
BB
= 10MHz / V
BBI
= V
BBQ
= 50mVpp
P
LO
= 0dBm
-10
-15
-20
10 GHz
11 GHz
12 GHz
13 GHz
14 GHz
15 GHz
16 GHz
17 GHz
LO leakage without cancalation
LO leakage with cancelation
LO Leakage (dBm)
LO leakage (dBm)
-25
-30
-35
-40
-45
-50
13
14
15
RF Frequency (GHz)
16
17
-10
-9
-8
-7
-6
-5 -4 -3 -2 -1
0
LO Input Power (dBm)
1
2
3
4
USB versus LO Input Power
F
BB
= 10MHz / V
BBI
= V
BBQ
= 50mVpp
F
LO
: [10 to 17 / 1] GHz
-24
-25
-26
DC Supply Current versus LO Input Power
F
BB
= 10MHz / V
BBI
= V
BBQ
= 50mVpp
F
LO
: [10 to 17 / 1] GHz
130
125
120
10 GHz
11 GHz
12 GHz
13 GHz
14 GHz
15 GHz
16 GHz
17 GHz
USB Power (dBm)
Supply Current (mA)
-27
-28
-29
-30
-31
-32
-33
-34
-10
-9
-8
-7
-6
-5 -4 -3 -2 -1
0
LO Input Power (dBm)
1
2
3
4
10 GHz
11 GHz
12 GHz
13 GHz
14 GHz
15 GHz
16 GHz
17 GHz
115
110
105
100
95
90
-10
-9
-8
-7
-6
-5 -4 -3 -2 -1
0
LO Input Power (dBm)
1
2
3
4
Ref. : DSCHM1483-QFG2305 - 31 Oct 12
5/10
Specifications subject to change without notice
Route Départementale 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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