HMC454ST89 Datasheet, PDF (13/14 Pages) Hittite Microwave Corporation – InGaP HBT 1/2 WATT HIGH IP3 AMPLIFIER, 0.4 - 2.5 GHz

v02.0404
MICROWAVE CORPORATION
HMC454ST89
InGaP HBT ½ WATT HIGH IP3
AMPLIFIER, 0.4 - 2.5 GHz
8
Alternative 900 MHz Application Circuit, Optimal OIP3 Layout
This alternate application circuit for 900 MHz applications features a resonating I/O structure on the PCB
that, while using more PCB area, will improve output IP3 from +40 dBm to +42 dBm. This circuit will satisfy
many applications from 700 to 1200 MHz as the typical performance below demonstrates. Contact the
HMC Applications Group for assistance in optimizing performance for your application.
TL1
TL2
Impedance
50 Ohm 50 Ohm
Physical Length
0.35”
0.05”
Electrical Length
18°
2.5°
PCB Material: 10 mil Rogers 4350, Er = 3.48
TL3
50 Ohm
0.53”
27°
Recommended Component Values
L1
18 nH
C1
4 pF
C2, C6
10 pF
C3
3 pF
C4
100 pF
C5
2.2 µF
8 - 262
Broadband Gain & Return Loss
25
20
15
10
S21
S11
5
S22
0
-5
-10
-15
0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4
FREQUENCY (GHz)
Output IP3 & P1dB
50
45
40
35
30
25
20
0.7
0.8
0.9
1
FREQUENCY (GHz)
OIP3
OP1dB
1.1
1.2
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order Online at www.hittite.com