3.3-3.6 GHz InGaP HBT
8W Linear Power Amplifier
February 2008 - Rev 29-Feb-08
CHV2721-QJ
Features
P1dB, 8W
Power Gain, 11 dB
Efficiency, 20% @ 1W
Positive Voltage Supply, +5V to +12V
Integrated Active Bias Circuit
Control Voltage Allows Different Current Settings
Input Fully Matched Internally
Output Pre-Matched Internally
Thermally Efficient for Higher MTTF
RoHS Compliant 6X6mm QFN
Ideal for WiMAX Applications (802.16)
General Description
The CHV2721-QJ is a high linearity single stage class AB
Heterojunction Bipolar Transistor (HBT) power amplifier
capable of 11 dB of gain, 8 Watt of power at 1 dB
compression and is housed in a 6X6mm QFN package. The
CHV2721-QJ provides less than 2.5% EVM at 31dBm output
power with 802.16 OFDM signal and peak to average
power ratio of 9 dB. The input of the device is fully matched
and the output is internally pre matched to 6 ohm
facilitating a simplified output matching approach. This
product operates off a single supply voltage between 5V
and 12V and includes an internal bias circuitry to enable
exact setting of quiescent current using an external control
voltage. The device is ideal as a final or driver stage for
WiMAX equipment in the 3.3 -3.6 GHz bands.
Absolute Maximum Ratings
Voltage Supply (Vcc)
Current (Icc)
Dissipated Power (Pdiss)
Input Power (Pin)
Storage Temperature (Tstg)
Channel Temperature (Tch)
Thermal Resistance (Rth)
Operating Backside Temperature (Tb)
4.5 (min) / 12 V (max)
2000 mA
18W
22 dBm
-60 to +150
º
C
175 ºC
5 ºC/W
-40 ºC to (see note 1)
Operation outside any of these limits can cause permanent damage.
(1) Caclulate maximum operating temperature Tmax using the
following formula: Tmax=175-(Pdiss [W] x 5) [C].
Electrical Characteristics (Ambient Temperature T=25
o
C,Vcc=12V)
1
Description
Operating Frequency
Quiescent Current
(2)
Power Gain @ Pout = 31dBm
Efficiency @ 31dBm
Output Power @ EVM = 2.5%
(3)
Adjacent Channel Power Ratio @Pout = 31dBm
(4)
Power @ 1dB Compression Point
Output Third order intercept Point @ 31dBm/tone
(5)
Input Reflection Coefficient
Control Voltage
Noise Figure
(1) Data measrued in a Mimix matched connectorized fixture.
(2) Quiescent current depends on Vcc
(3) Using an 802.16d OFDM signal format with PAR = 9dB
(4) Using 3 GPP WCDMA signal, PAR = 9.17dB
(5) 100KHz spacing
Parameter
f
Icq
Gps
Eff
Pout
ACPR
P1dB
OIP3
S11
Vctrl
NF
Units
GHz
mA
dB
%
dBm
dBc
dBm
dBm
dB
V
dB
Min.
3.3
-
-
-
-
-
-
-
-
-
-
Typ.
3.4
160
11
25
31
-40
39
51
-12
5
9
Max.
3.6
-
-
-
-
-
-
-
-
-
-
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 1 of 6
Characteristic Data and Specifications are subject to change without notice.
©2008
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
3.3-3.6 GHz InGaP HBT
8W Linear Power Amplifier
February 2008 - Rev 29-Feb-08
CHV2721-QJ
Typical Performance
6
5.5
5
4.5
4
EVM (%)
EVM Vs Output Power Vs Frequency
OFDM 802.16d, 64QAM, PAR =9dB, +12V
25
Efficiency Vs Output power Vs Frequency
Vcc = +12V, Vcontrol = +5V, Icq = 167mA
3.3GHz
3.4GHz
Eff (%)
20
3.5
3
2.5
2
1.5
1
0.5
0
18
19
20
21
22
23
24
25
26
27
28
29
3.6GHz
15
10
3.3GHz
3.4GHz
3.6GHz
5
0
30
31
32
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Output Power (dBm)
Output Power (dBm)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
18
19
20
Gain Vs Output power
Vcc = +12V, Vcontrol = +5V, Icq = 167mA
600
500
400
3.3GHz
3.4GHz
3.6GHz
Icc (mA)
Current Vs Output power Vs Frequency
Vcc = +12V, Vcontrol = +5V, Icq = 167A
Gain (dB)
300
200
100
0
3.3GHz
3.4GHz
3.6GHz
21
22
23
24
25
26
27
28
29
30
31
32
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Output Power (dBm)
Output Power (dBm)
4.5
4
3.5
EVM Vs Output Power Vs Voltage
OFDM 802.16d, 64QAM, PAR =9dB, 3.4GHz
33
32
31
30
Pout (dBm)
Pout @ EVM < 2.5% Vs Voltage
3.4GHz
3
EVM (%)
2.5
2
1.5
1
0.5
0
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
12V
10V
8V
6V
5V
29
28
27
26
25
24
23
5
6
7
8
9
10
11
12
Output Power (dBm)
Voltage (V)
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 2 of 6
Characteristic Data and Specifications are subject to change without notice.
©2008
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
3.3-3.6 GHz InGaP HBT
8W Linear Power Amplifier
February 2008 - Rev 29-Feb-08
CHV2721-QJ
Recommended
Schematic
Vcontrol
Active
Bias
RFin
I/P
Match
O/P
Match
Evaluation Board Layout
Part Identifier
1.2 pF 0603 Capacitor
4.3 pF 0603 Capacitor
10 uF 0603 Capacitor
10 pF 0603 Capacitor
100 uF Tantalum Capacitor
20 pF 0603 Capacitor
Mfg
Mfg Part
QTY Reference
2
1
1
2
3
1
C1,C2
C3
C4,C5,C9
C7,C8
C6,C10
C1 1
Murata ERB1885C2D1R6BDX1
Murata ERB1885C2D1R5BDX1
Murata ERB1885C2D6R8BDX1
Murata GRM188R71E103KA01D
AVX
TAJD107K016R
Turn on sequence:
Turn on power supply Vcc =
+12V
Turn on power supply Vcontrol =
+5V
Turn on RF
Turn off sequence:
Turn off RF power
Turn off power supply Vcontrol =
+5V
Turn off power supply Vcc =
+12V
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 3 of 6
Characteristic Data and Specifications are subject to change without notice.
©2008
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
3.3-3.6 GHz InGaP HBT
8W Linear Power Amplifier
February 2008 - Rev 29-Feb-08
CHV2721-QJ
Physical Dimensions:
Recommended Board Layout
It is recommended that all N/C pins be grounded and sufficient number of via holes to be present under the
ground plane to insure good RF and thermal grounding.
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 4 of 6
Characteristic Data and Specifications are subject to change without notice.
©2008
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
3.3-3.6 GHz InGaP HBT
8W Linear Power Amplifier
February 2008 - Rev 29-Feb-08
CHV2721-QJ
App Note [1] Biasing
- The CHV2720-QJ requires power supply sequencing. Vcc should be applied first and then Vcontrol. Quiescent
current (Icq) can be varied by adjusting Vcontrol in order to obtain the optimum performance desired. RF power is applied after both Vcc
and Vcontrol are present. When turning off the device Vcontrol is switched off first and then Vcc. Vcontrol can be used to turn off the current.
Pin Assignment:
Functional Block Diagram:
Vcontrol
Active
Bias
Pin #
Description
Vcontrol
RF IN
RF OUT 4
RF OUT 3
RF OUT 2
RF OUT 1
N/C
RFout
RFout
1
4
14
15
16
17
2, 3, 5, 6, 7, 8, 9, 10, 11, 12
13, 18, 19, 20, 21, 22, 23, 24
RFin
Input Match
Output
Match
RFout
RFout
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 5 of 6
Characteristic Data and Specifications are subject to change without notice.
©2008
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
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