MICROWAVE CORPORATION

8 - 286

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order Online at www.hittite.com

8

HMC481ST89

SiGe HBT GAIN BLOCK

MMIC AMPLIFIER, DC - 5.0 GHz

v00.0204

General Description

Features

Functional Diagram

The HMC481ST89 is a SiGe Heterojunction Bipolar

Transistor (HBT) Gain Block MMIC SMT amplifier

covering DC to 5 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 +21 dBm output power.

The HMC481ST89 offers 20 dB of gain with a +33

dBm output IP3 at 1 GHz while requiring only 79

mA 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.

P1dB Output Power: +19 dBm

Gain: 20 dB

Output IP3: +33 dBm

Cascadable 50 Ohm I/Os

Single Supply: +6V to +12V

Industry Standard SOT89 Package

Typical Applications

The HMC481ST89 is an ideal RF/IF

gain block & LO or PA driver for:

• Cellular / PCS / 3G

• Fixed Wireless & WLAN

• CATV, Cable Modem & DBS

• Microwave Radio & Test Equipment

Note: Data taken with broadband bias tee on device output.

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 - 5.0 GHz

18

15.5

13

11

9

20

17.5

15

13

11

dB

dB

dB

dB

dB

Gain Variation Over Temperature

DC - 5.0 GHz

0.008

0.016

dB/ °C

Input Return Loss

DC - 1.0 GHz

1.0 - 5.0 GHz

12

15

dB

dB

Output Return Loss

DC - 1.0 GHz

1.0 - 4.0 GHz

4.0 - 5.0 GHz

17

27

23

dB

dB

dB

Reverse Isolation

DC - 5.0 GHz

18

dB

Output Power for 1 dB Compression (P1dB)

0.5 - 1.0 GHz

1.0 - 2.0 GHz

2.0 - 3.0 GHz

3.0 - 4.0 GHz

4.0 - 5.0 GHz

16

15

13

11

9

19

18

16

14

12

dBm

dBm

dBm

dBm

dBm

Output Third Order Intercept (IP3)

(Pout= 0 dBm per tone, 1 MHz spacing)

0.5 - 2.0 GHz

2.0 - 3.0 GHz

3.0 - 4.0 GHz

4.0 - 5.0 GHz

33

30

27

25

dBm

dBm

dBm

dBm

Noise Figure

DC - 4.0 GHz

4.0 - 5.0 GHz

3.5

4.0

dB

dB

Supply Current (Icq)

79

mA