Voltage Variable RF Attenuator

1MHz to 3000MHz

© 2018 Renesas Electronics Corporation

4

May 7, 2021

F2255

Datasheet

F2255 SPECIFICATIONS

Refer to EVKit / Applications Circuit, VDD = +3.3V, TC = +25°C, signals applied to RF1 input, FRF = 500MHz, minimum

attenuation, PIN = 0dBm for small signal parameters, +20dBm for single tone linearity tests, +20dBm per tone for

two tone tests, two tone delta frequency = 80MHz, PCB board traces and connector losses are de-embedded unless

otherwise noted. Refer to Typical Operating Curves for performance over entire frequency band.

Parameter

Symbol

Condition

Min

Typ

Max

Units

Insertion Loss, IL

AMIN

Minimum Attenuation

1.1

1.7 1

dB

Maximum attenuation

AMAX

33

34.6

dB

Insertion Phase Δ

ΦΔMAX

At 36dB attenuation

relative to Insertion Loss

27

deg

ΦΔMID

At 18dB attenuation

relative to Insertion Loss

8

Input 1dB Compression 3

P1dB

36

dBm

Minimum RF1 Return Loss

over control voltage range

S11

20MHz

23

dB

500MHz

22

2000MHz

23

3000MHz

30

Minimum RF2 Return Loss

over control voltage range

S22

20MHz

23

dB

500MHz

22

2000MHz

23

3000MHz

24

Input IP3

IIP3

60

dBm

Input IP3 over Attenuation

IIP3ATTEN

All attenuation settings

44 2

46

Minimum Output IP3

OIP3MIN

Maximum attenuation

35

Input IP2

IIP2

PIN + IM2dBC,

IM2 term is F1+F2

98

dBm

Minimum Input IP2

IIP2MIN

All attenuation settings

74

dBm

Input IH2

HD2

PIN + H2dBc

82

dBm

Input IH3

HD3

PIN + (H3dBc/2)

49

dBm

Settling Time

TSETTL0.1dB

Any 1dB step in the 0dB

to 33dB control range

50% VCTRL to RF settled to

within ± 0.1dB

15

μSec

Specification Notes:

1 – Items in min/max columns in

bold italics are Guaranteed by Test.

2 – Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization.

3 – The input 1dB compression point is a linearity figure of merit. Refer to Absolute Maximum Ratings section

along with Figure 1 for the maximum RF input power vs. RF frequency.