F1956 datasheet(3/23 Pages) IDT

Part #	F1956

Description	7-Bit 0.25 dB Wideband Digital Step Attenuator

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Manufacturer	IDT [Integrated Device Technology]

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F1956

Rev 2 04/08/2016

3

7-Bit 0.25 dB Wideband Digital Step Attenuator

F1956 RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Supply Voltage(s)

VDD

3.00

5.25

V

Operating Temperature Range

TCASE

Case Temperature

-40

+105

°C

Frequency Range

FRF

1

6000

MHz

RF CW Input Power

PCW

RF1 or RF2

See

Figure 1

dBm

RF Peak Input Power

Ppeak

RF1 Port, VDD = 3.3V,

TCASE= 85 °C,

FRF > 500 MHz,

WCDMA, 3GPP,

Downlink, 64 DPCH,

Chip rate =3.84 MSPS,

Avg. Pin = +22 dBm

1 %

28.9

dBm

0.1 %

30.7

0.01 %

32.3

0.001 %

33.2

RF Source Impedance

ZRFI

Single Ended

50

Ω

RF Load Impedance

ZRFO

Single Ended

50

Ω

Figure 1 - Maximum Operating RF input power vs Input frequency

0

4

8

12

16

20

24

28

32

0.01

0.10

1.00

10.00

100.00

1000.00

Frequency (MHz)

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