Glitch-Free Digital Step Attenuator

12

Jul 12, 2021

PACKAGE OUTLINE DRAWING

The package outline drawings are located at the end of this document and are accessible from the link below. The

package information is the most current data available.

https://www.renesas.com/us/en/document/psc/24-vfqfpn-package-outline-drawing-40-x-40-x-075-mm-body-

05mm-pitch-epad-26-x-26-mm-nbnbg24p2?language=en?language=en

PIN DESCRIPTIONS

Pin #

Pin

Name

Pin Function

1

D0

Parallel Control

– 0.25 dB attenuation step. Pull high for 0.25 dB Attenuation.

2

VDD

Main Supply. Use 3.3V or 5V. Current is < 1 mA.

3

VMODE

Pull low for parallel mode. Pull high or leave unconnected for serial mode.

4

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

5

RF1

Device RF input or output (bi-directional). Must AC couple to this pin.

6

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

7

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

8

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

9

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

10

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

11

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

12

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

13

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

14

RF2

Device RF input or output (bi-directional). Must AC couple to this pin.

15

GND

Connect directly to paddle ground or as close as possible to pin with thru via.

16

LE

Latch Enable. Serial Data latched into active register on rising edge.

17

CLK

Serial Clock Input

18

DATA

Serial Data Input

19

D6

Parallel Control

– 16 dB attenuation step. Pull high for 16 dB Attenuation.

20

D5

Parallel Control

– 8 dB attenuation step. Pull high for 8 dB Attenuation.

21

D4

Parallel Control

– 4 dB attenuation step. Pull high for 4 dB Attenuation.

22

D3

Parallel Control

– 2 dB attenuation step. Pull high for 2 dB Attenuation.

23

D2

Parallel Control

– 1 dB attenuation step. Pull high for 1 dB Attenuation.

24

D1

Parallel Control

– 0.5 dB attenuation step. Pull high for 0.5 dB Attenuation.

EP

Exposed

Paddle

Connect to Ground with multiple vias for good thermal relief.