QPC3614

75Ω 5 −1500MHz Digital Step Attenuator

Data Sheet Rev. C, October 11, 2017 | Subject to change without notice

- 1 of 19 -

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®

20 Pin 4.2

 x 4.2mm QFN Package

Key Features

• 6-Bit, 31.5dB Range, 0.5dB Step

• Patented Circuit Architecture

• Overshoot-free Transient Switching Performance

• Frequency Range 5MHz to 1500MHz

• High Linearity, IIP3 65dBm Typical at 1GHz

• Serial and Parallel Control Interface

• Fast Switching Speed, <500nsec Typical

• RF Pads Have No DC Voltage; Can be DC Grounded

Externally

• Option to Turn Off Negative Voltage Generator and

• Power-up Default Setting Is Maximum Attenuation

Product Overview

The QPC3614 is a

75Ω 6-bit digital step attenuator (DSA)

that features high

linearity over the entire 31.5 dB gain

control range in 0.5 dB steps and has a low insertion loss

of 1.2dB at

1 GHz. The QPC3614 features three modes of

control:

serial,

latched

parallel,

and

direct

parallel

programming.

Patented

circuit

architecture

provides

overshoot-free transient switching performance. QPC3614

is available in a 20-pin 4.2mm x 4.2mm x 0.90mm QFN

package.

Functional Block Diagram

Top View

Ordering Information

Part No.

Description

QPC3614SQ

Sample bag with 25 pieces

QPC3614SR

7" Reel with 100 pieces

QPC3614TR13

13" Reel with 2500 pieces

QPC3614PCK

5 - 1500

 MHz PCBA with 5 pc. sample bag

Applications

• Optical Nodes

• Point-to-Point

• MDU Amplifiers

• Pre-amplifier Attenuation

• Inter-stage Attenuation

• Return Attenuation

• AGC

• Tilt Control

19

1

2

3

4

18

17

16

14

13

12

11

6

7

8

9

6-BIT DSA

LOGIC CONTROL

C16

RFIN

DATA

CLK

C8

RFOUT

PBAR/S

VSS

5

10

15

20

LE

GND