Intermediate Frequency Digital Variable Gain Amplifier

IDTF1200

RevO

Page 2 of 13

April, 2011

DATASHEET

-0.3V to +5.5V

All other Pins to GND

-0.3V to +2.2V

+10 dBm

Continuous Power Dissipation

1.5W

+41°C/W

+4°C/W

Operating Temperature Range (Case Temperature)

Maximum Junction Temperature

150°C

Storage Temperature Range

-65°C to +150°C

Lead Temperature (soldering, 10s) .

+260°C

Standard Variable Gain amplifiers exhibit a [NF/Gain] slope of -1 dB/dB. Practically speaking, as gain is

reduced, Noise Figure degrades dB for dB. The F1200 utilizes new technology that flattens the Noise Figure

response (~ -0.16 dB/dB) for most of the gain control range while keeping distortion (Output IP3) constant.

The result is that NF is improved up to 16 dB vs. a standard VGA at low gain settings. The graph below

illustrates this by showing the IDTF1200 NF and IP3O vs. Gain setting contours.

0

5

10

15

20

25

30

35

40

45

50

-2

0

2

4

6

8

10

12

14

16

18

20

22

Gain (dB)

Output IP3

Noise Figure