For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - DRIVER & GAIN BLOCK - SMT
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8 - 74
HMC475ST89 / 475ST89E
InGaP HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4.5 GHz
v02.0710
Functional Diagram General Description
The HMC475ST89(E) is a InGaP Heterojunction
Bipolar Transistor (HBT) Gain Block MMIC SMT
ampli er covering DC to 4.5 GHz. Packaged in an
industry standard SOT89, the ampli er can be used
as a cascadable 50 Ohm RF/IF gain stage as well as
a LO or PA driver with up to +25 dBm output power.
The HMC475ST89(E) offers 21.5 dB of gain and +35
dBm output IP3 at 850 MHz while requiring only 110
mA from a single positive supply. The Darlington
topology results in reduced sensitivity to normal
process variations and excellent gain stability over
temperature while requiring a minimal number of
external bias components.
Typical Applications
The HMC475ST89 / HMC475ST89E 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
• IF and RF Applications
Electrical Speci cations, Vs= 8.0 V, Rbias= 9.1 Ohm, TA = +25° C
Parameter Min. Typ. Max. Units
Gain
DC - 1.0 GHz
1.0 - 2.0 GHz
2.0 - 3.0 GHz
3.0 - 4.0 GHz
4.0 - 4.5 GHz
19.5
17.5
14.5
11.5
9
21.5
19.5
16.5
13.5
12
dB
dB
dB
dB
dB
Gain Variation Over Temperature DC - 4.5 GHz 0.008 0.012 dB/ °C
Input Return Loss
DC - 1.0 GHz
1.0 - 2.0 GHz
2.0 - 4.5 GHz
11
14
14
dB
dB
dB
Output Return Loss DC - 1.0 GHz
1.0 - 4.5 GHz
13
10
dB
dB
Reverse Isolation DC - 4.5 GHz 25 dB
Output Power for 1 dB Compression (P1dB)
DC - 1.0 GHz
1.0 - 2.0 GHz
2.0 - 3.0 GHz
3.0 - 4.0 GHz
4.0 - 4.5 GHz
19.0
18.0
17.5
13.0
11.0
22.0
21.0
19.5
16.0
14.0
dBm
dBm
dBm
dBm
dBm
Output Third Order Intercept (IP3)
(Pout= 0 dBm per tone, 1 MHz spacing)
DC - 2.5 GHz
2.5 - 4.5 GHz
35
30
dBm
dBm
Noise Figure DC - 3.0 GHz
3.0 - 4.5 GHz
3.5
3.8
dB
dB
Supply Current (Icq) 110 135 mA
Note: Data taken with broadband bias tee on device output.
Features
P1dB Output Power: +22 dBm
Gain: 21.5 dB
Output IP3: +35 dBm
Cascadable 50 Ohm I/Os
Single Supply: +8V to +12V
Industry Standard SOT89 Package
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D