HMC478ST89 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – SiGe HBT GAIN BLOCK MMIC AMPLIFIER, DC - 4.0 GHz

5
5 - 438
Designer’s Kit
Available
HMC478ST89 / 478ST89E
v02.1205
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4.0 GHz
Typical Applications
The HMC478ST89 / HMC478ST89E is an ideal RF/IF
gain block & LO or PA driver:
• Cellular / PCS / 3G
• Fixed Wireless & WLAN
• CATV, Cable Modem & DBS
• Microwave Radio & Test Equipment
Features
P1dB Output Power: +18 dBm
Gain: 22 dB
Output IP3: +33 dBm
Cascadable 50 Ohm I/Os
Single Supply: +5V to +8V
Industry Standard SOT89 Package
Robust 1,000V ESD, Class 1C
Included in the HMC-DK001 Designer’s Kit
Functional Diagram
General Description
The HMC478ST89 & HMC478ST89E are SiGe
Heterojunction Bipolar Transistor (HBT) Gain Block
MMIC SMT amplifiers covering DC to 4 GHz. Packaged
in an industry standard SOT89, the amplifier can be
used as a cascadable 50 Ohm RF/IF gain stage as
well as a LO or PA driver with up to +20 dBm output
power. The HMC478ST89 & HMC478ST89E offers 22
dB of gain with a +30 dBm output IP3 at 850 MHz while
requiring only 62mA from a single positive supply.
The Darlington feedback pair used results in reduced
sensitivity to normal process variations and excellent
gain stability over temperature while requiring a
minimal number of external bias components.
Electrical Specifications, Vs= 5.0 V, Rbias= 18 Ohm, T_A = +25° C
Parameter
Min.
Gain
Gain Variation Over Temperature
Input Return Loss
DC - 1.0 GHz
19
1.0 - 2.0 GHz
16
2.0 - 3.0 GHz
13
3.0 - 4.0 GHz
11
DC - 4.0 GHz
DC - 1.0 GHz
1.0 - 3.0 GHz
3.0 - 4.0 GHz
Output Return Loss
Reverse Isolation
Output Power for 1 dB Compression (P1dB)
DC - 3.0 GHz
3.0 - 4.0 GHz
DC - 4.0 GHz
0.5 - 1.0 GHz
15
1.0 - 2.0 GHz
13
2.0 - 3.0 GHz
10
3.0 - 4.0 GHz
8
Output Third Order Intercept (IP3)
(Pout= 0 dBm per tone, 1 MHz spacing)
Noise Figure
0.5 - 2.0 GHz
2.0 - 3.0 GHz
3.0 - 4.0 GHz
DC - 2.0 GHz
2.0 - 4.0 GHz
Supply Current (Icq)
Note: Data taken with broadband bias tee on device output.
Typ.
22
19
16
14
0.015
15
10
13
13
15
20
18
16
13
11
30
28
25
3
4
62
Max.
0.02
Units
dB
dB
dB
dB
dB/ °C
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
mA
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com