12 - 4

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

HMC680LP4 / 680LP4E

v03.0609

BiCMOS MMIC 5-BIT DIGITAL

VARIABLE GAIN AMPLIFIER, 30 - 400 MHz

Absolute Maximum Ratings

rf input power

20 dbm

rf Output power

22 dbm

digital inputs (b0-b4, latch enable)

-0.5 to Vdd +0.5V

bias Voltage (Vdd)

5.6 V

Channel temperature

125 °C

Continuous pdiss (t = 85 °C)

(derate 42 mW/°C above 85 °C)

1.7 W

thermal resistance

(channel to ground paddle)

24 °C/W

storage temperature

-65 to +150 °C

Operating temperature

-40 to +85 °C

eleCtrOstatiC sensitiVe deViCe

ObserVe Handling preCaUtiOns

Amp Bias Voltage

idd (typ.) (ma)

5V

244

attenUatiOn (db)

b2

b1

b0

0

0

0

0

0

0

1

0

0

0

0

1

2

0

0

0

1

0

3

0

0

0

1

1

4

0

0

1

0

0

5

0

0

1

0

1

6

0

0

1

1

0

7

0

0

1

1

1

8

0

1

0

0

0

9

0

1

0

0

1

10

0

1

0

1

0

11

0

1

0

1

1

12

0

1

1

0

0

13

0

1

1

0

1

14

0

1

1

1

0

15

0

1

1

1

1

16

1

X

0

0

0

17

1

X

0

0

1

18

1

X

0

1

0

19

1

X

0

1

1

20

1

X

1

0

0

21

1

X

1

0

1

22

1

X

1

1

0

23

1

X

1

1

1

[1] enabling b4 disables b3, the minimum attenuation is 16 db

Truth Table

Harmonics vs. Frequency

Supply Current vs. Temperature

-100

-80

-60

-40

-20

0

0

0.1

0.2

0.3

0.4

0.5

0.6

2nd Harmonic

3rd Harmonic

FREQUENCY (GHz)

200

220

240

260

280

4.5

5

5.5

-40C

+25C

+85C

VOLTAGE (V)

Control Interface:

the gain of HmC680lp4(e) is controlled by adjusting the state of the attenuator. the attenuator has a 5-bit parallel

CmOs/ttl compatible interface. state of the attenuator can be set with respect to the truth table above.

Power on sequence:

the ideal power up sequence is: gnd, Vdd, digital inputs, rf inputs. relative order of the digital inputs is not

important as long as they are powered after Vdd/gnd.

Control Voltage Table

state

Vdd = +3V

Vdd = +5V

low

0 to 0.5V @ <1 µa

0 to 0.8V @ <1 µa

High

2 to 3V @ <1 µa

2 to 5V @ <1 µa

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