F0452C Datasheet

© 2020 Renesas Electronics Corporation

20

May 5, 2020

Application Information

Power Supplies

minimize noise and fast transients. Supply noise can degrade the noise figure, and fast transients can trigger ESD clamps and cause them to

fail. Supply voltage change or transients should have a slew rate smaller than 1V / 20µs. In addition, all control pins should remain at

0V (±0.3V) while the supply voltage ramps up or while it returns to zero.

Control Pin Interface

If control signal integrity is a concern and clean signals cannot be guaranteed due to overshoot, undershoot, ringing, etc., the following circuit

at the input of each control pin is recommended. This applies to control pins 1, 2, 3, 6, 7, and 8 shown in Figure 29.

Figure 29. Control Pin Interface Schematic

2 pF

5 kΩ

2 pF

5 kΩ

SW1_CTRL

ATT1_CTRL

STBY1

STBY2

SW2_CTRL

ATT2_CTRL

2 pF

5 kΩ

2 pF

5 kΩ

2 pF

5 kΩ

2 pF

5 kΩ

1

2

3

4

5

6

7

8

24

23

22

21

20

19

18

17