12 - 34

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

12

v07.0410

Functional Diagram

The HMC628LP4(E) is ideal for:

• Cellular/3G Infrastructure

• WiBro / WiMAX / 4G

• Microwave Radio & VSAT

• Test Equipment and Sensors

• IF & RF Applications

TTL/CMOS compatible serial, parallel or latched

parallel control interface

High Output IP3: +35 dBm (At all gain settings)

Wide Gain Control Range: 23 dB

Power-up State Selection

Excellent State & Step Accuracy (±0.05 dB)

The HMC628LP4(E) is a digitally controlled variable

gain amplifier which operates from 50 to 800 MHz,

and can be programmed to provide anywhere from

8 dB attenuation, to 15 dB of gain, in 1.0 dB steps.

The HMC628LP4(E) delivers noise figure of 5 dB in its

maximum gain state, with output IP3 of up to +35 dBm

in any state. The dual mode control interface is CMOS/

TTL compatible, and accepts either a three wire serial

input or a 5 bit parallel word. The HMC628LP4(E) also

features a user selectable power up state and a serial

output port for cascading other Hittite serial controlled

components. The HMC628LP4(E) is housed in a

RoHS compliant 4x4 mm QFN leadless package, and

is available in three evaluation board configurations,

depending on the application frequency.

Parameter

50 - 250

250 - 500

500 - 800

MHz

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Units

Gain (Maximum Gain State)

13

15

12.8

14

10.5

13

dB

Gain Control Range

23

23

23

dB

Input Return Loss

12

10

10

dB

Output Return Loss

10

12.5

9

dB

Gain Accuracy: (Referenced to Maximum Gain State)

± (0.1 + 1% of Gain

Setting )Max

± (0.4 + 2% of Gain

Setting )Max

± (0.4 + 4% of Gain

Setting )Max

dB

Output Power for 1dB Compression

19

19.5

16

18

14

18

dBm

Output Third Order Intercept Point

dBm

Output Second Order Intercept Point

dBm

Harmonics

2nd

3rd

46

69

55

75

62

83

dBc

dBc

Switching Characteristics

tRISE, tFALL (10 / 90% RF)

11

18

ns

ns

tON, tOFF ( Latch Enable to 10 / 90% RF)

Noise Figure

5

6

6.5

dB

Supply Current (Idd)

6585

6585

6585

mA

[1] Two-Tone Output Power @ 5 dBm

[2] Two-Tone Output Power @ 2 dBm

[3] Two-Tone Output Power @ 0 dBm

Typical Applications

Features

General Description

BiCMOS MMIC 5-Bit DIGITAL

VARIABLE GAIN AMPLIFIER, 50 - 800 MHz