2 GHz to 18 GHz, Digitally Tunable,

High-Pass and Low-Pass Filter

Enhanced Product

ADMV8818-EP

Rev. A

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FEATURES

Digitally tunable, multioctave, high-pass and low-pass tuning

Independent 3 dB frequency control for up to 4 GHz of

bandwidth

Optimal wideband rejection: 35 dB

Single chip replacement for discrete filter banks

Compact 9 mm × 9 mm, 56-terminal LGA package

ENHANCED PRODUCT FEATURES

Supports defense and aerospace applications (AQEC standard)

Military temperature range of −55°C to +105°C

Controlled manufacturing baseline

One assembly and test site

One fabrication site

Production change notification

Qualification data available on request

APPLICATIONS

Test and measurement equipment

Military radar, electronic warfare, and electronic

countermeasures

Satellite communications and space

Industrial and medical equipment

GENERAL DESCRIPTION

The ADMV8818-EP is a fully monolithic microwave integrated

circuit (MMIC) that features a digitally selectable frequency of

operation. The device features four independently controlled high-

pass filters (HPFs) and four independently controlled low-pass

filters (LPFs) that span the 2 GHz to 18 GHz frequency range.

The flexible architecture of the ADMV8818-EP allows the 3 dB

controlled independently to generate up to 4 GHz of bandwidth.

The digital logic control on each filter is 4 bits wide (16 states) and

insertion loss is 9 dB, and the wideband rejection is 35 dB, which is

ideally suited for minimizing system harmonics.

This tunable filter can be used as a smaller alternative to large

switched filter banks and cavity tuned filters, and this device

provides a dynamically adjustable solution in advanced

communications applications.

FUNCTIONAL BLOCK DIAGRAM

SPI

ADMV8818-EP

GND

14

13

12

11

10

9

8

7

5

4

3

2

1

6

GND

GND

GND

GND

GND

RFIN

GND

GND

GND

GND

GND

GND

RST

29

30

31

32

33

34

35

36

37

38

39

40

41

42

GND

VSS1 (–2.5V)

GND

VDD2 (+3.3V)

GND

GND

RFOUT

GND

GND

GND

GND

VDD1 (+2.5V)

GND

GND

BYPASS

2

BYPASS

2

1

3

4

3

1

4

Figure 1.