TGA4906
4 Watt Ka-Band HPA
Key Features
•
•
•
•
•
•
•
Frequency Range: 28 - 31 GHz
36 dBm Nominal Psat
Gain: 24 dB
Return Loss: -8 dB
Bias: Vd = 6 V, Idq = 1.6 A, Vg = -0.75 V Typical
Technology: 3MI 0.15 um Power pHEMT
Chip Dimensions: 2.98 x 2.90 x 0.05 mm
Measured Performance
Bias conditions: Vd = 6 V, Idq = 1.6 A, Vg = -0.75 V Typical
Primary Applications
•
Ka-Band VSAT
38
37
P1dB & Psat (dBm)
36
35
34
33
32
31
30
28
28.5
29
29.5
30
30.5
31
Frequency (GHz)
Psat
P1dB
Product Description
The TriQuint TGA4906 is a compact 4 Watt High
Power Amplifier for Ka-band applications. The part
is designed using TriQuint’s proven standard 0.15
um gate Power pHEMT production process. The
TGA4906 provides a nominal 36 dBm of output
power at an input power level of 14 dBm with a
small signal gain of 24 dB.
The part is ideally suited for low cost emerging
markets such as base station transmitters for
satellite ground terminals and point to point radio.
30
27
24
21
Gain (dB)
18
15
12
9
6
3
0
28
28.5
29
29.5
30
30.5
31
Frequency (GHz)
Gain
IRL
ORL
0
-3
-6
-9
-12
-15
-18
-21
-24
-27
-30
Return Loss (dB)
Datasheet subject to change without notice.
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 Info-mmw@tqs.com
Sept 2010 © Rev B
1
Table I
Absolute Maximum Ratings 1/
Symbol
Vd-Vg
Vd
Vg
Id
Ig
Pin
Tchannel
1/
TGA4906
Notes
Parameter
Drain to Gate Voltage
Drain Voltage
Gate Voltage Range
Drain Current
Gate Current Range
Input Continuous Wave Power
Channel Temperature
Value
11 V
6.5 V
-5 to 0 V
3.7 A
-15 to 202 mA
26 dBm
200 ºC
2/
2/
2/
These ratings represent the maximum operable values for this device. Stresses beyond those listed
under “Absolute Maximum Ratings” may cause permanent damage to the device and / or affect
device lifetime. These are stress ratings only, and functional operation of the device at these
conditions is not implied.
Combinations of supply voltage, supply current, input power, and output power shall not exceed the
maximum power dissipation listed in Table IV.
2/
Table II
Recommended Operating Conditions
Symbol
Vd
Idq
Id_Drive
Vg
1/
Drain Voltage
Drain Current
Drain Current under RF Drive
Gate Voltage
Parameter 1/
Value
6V
1.6 A
3.3 A
-0.75 V
See assembly diagram for bias instructions.
2
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 Info-mmw@tqs.com
Sept 2010 © Rev B
TGA4906
Table III
RF Characterization Table
Bias: Vd = 6 V, Idq = 1.6 A, Vg = -0.75 V Typical
SYMBOL
Gain
IRL
ORL
Psat
OTOI
PARAMETER
Small Signal Gain
Input Return Loss
Output Return Loss
Saturated Output
Power
Output TOI
Gain Temp Coefficient
TEST
CONDITIONS
f = 28 - 30 GHz
f = 31 GHz
f = 28 - 31 GHz
f = 28 - 31 GHz
f = 28 GHz
f = 29 - 31 GHz
f = 28 - 31 GHz
f = 28 - 31 GHz
MINIMUM
21
16
NOMINAL
24
-8
-10
UNITS
dB
dB
dB
dBm
dBm
dB/
0
C
34.3
35.3
36
39
-0.04
3
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 Info-mmw@tqs.com
Sept 2010 © Rev B
TGA4906
Table IV
Power Dissipation and Thermal Properties
Parameter
Maximum Power Dissipation
Test Conditions
Tbaseplate = 70 ºC
Value
Pd = 20.8 W
Tchannel = 150 ºC
Tm = 1.0E+6 Hrs
θjc
= 3.85 (ºC/W)
Tchannel = 107 ºC
Tm = 2.0E+8 Hrs
θjc
= 3.85 (ºC/W)
Tchannel = 131 ºC
Tm = 9.2E+6 Hrs
Notes
1/ 2/
Thermal Resistance,
θjc
Vd = 6 V
Id = 1600 mA
Pd = 9.6 W
Tbaseplate = 70 ºC
Vd = 6 V
Id = 3300 mA
Pout = 36 dBm
Pd = 15.83 W
Tbaseplate = 70 ºC
30 Seconds
Thermal Resistance,
θjc
Under RF Drive
Mounting Temperature
Storage Temperature
1/
320 ºC
-65 to 150 ºC
For a median life of 1E+6 hours, Power Dissipation is limited to
Pd(max) = (150 ºC – Tbase ºC)/θjc.
2/
Channel operating temperature will directly affect the device median time to failure (MTTF). For
maximum life, it is recommended that channel temperatures be maintained at the lowest possible
levels.
4
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 Info-mmw@tqs.com
Sept 2010 © Rev B
Measured Data
TGA4906
Bias conditions: Vd = 6 V, Idq = 1.6 A, Vg = -0.75 V Typical
30
27
24
21
Gain (dB)
18
15
12
9
6
3
0
20
22
24
26
28
30
32
34
36
Frequency (GHz)
0
-3
Return Loss (dB)
-6
-9
-12
-15
-18
-21
-24
-27
-30
20
22
24
26
28
30
32
34
36
Frequency (GHz)
5
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 Info-mmw@tqs.com
Sept 2010 © Rev B
IRL
ORL
