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Phone: 978-250-3343

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Application Support: Phone: 978-250-3343 or apps@hittite.com

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SiGe HBT GAIN BLOCK

MMIC AMPLIFIER, DC - 4 GHz

v03.0810

General Description

Functional Diagram

The HMC478MP86 & HMC478MP86E are SiGe

Heterojunction Bipolar Transistor (HBT) Gain Block

MMIC SMT amplifiers covering DC to 4 GHz. This

Micro-P packaged amplifier can be used as a cas-

cadable 50 Ohm RF/IF gain stage as well as a

LO or PA driver with up to +20 dBm output power.

The HMC478MP86(E) offers 22 dB of gain with a

+32 dBm output IP3 at 850 MHz while requiring only

62 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: +18 dBm

Gain: 22 dB

Output IP3: +32 dBm

Cascadable 50 Ohm I/Os

Single Supply: +5V to +8V

Robust 1,000V ESD, Class 1C

Included in the HMC-DK001 Designer’s Kit

Typical Applications

The HMC478MP86 / HMC478MP86E 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

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

19

15

13

11

22

18

16

14

dB

dB

dB

dB

Gain Variation Over Temperature

DC - 4 GHz

0.015

0.02

dB/ °C

Input Return Loss

DC - 1.0 GHz

1.0 - 3.0 GHz

3.0 - 4.0 GHz

15

12

13

dB

dB

dB

Output Return Loss

DC - 1.0 GHz

1.0 - 4.0 GHz

20

17

dB

dB

Reverse Isolation

DC - 4 GHz

20

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

15

13

11

9

18

16

14

12

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

32

29

25

dBm

dBm

dBm

Noise Figure

DC - 3.0 GHz

3.0 - 4.0 GHz

2.5

3.5

dB

dB

Supply Current (Icq)

62

mA

Features