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

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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

amplifier covering DC to 4.5 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 +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

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