0.25 dB LSB, 7-Bit, Silicon Digital

Attenuator, 0.1 GHz to 6.0 GHz

Data Sheet

HMC1119

Rev. 0

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FEATURES

Attenuation range: 0.25 dB LSB steps to 31.75 dB

Low insertion loss:

1.1 dB at 1.0 GHz

1.3 dB at 2.0 GHz

Typical step error: less than ±0.1 dB

Excellent attenuation accuracy: less than ±0.2 dB

Low phase shift error: 6° phase shift at 1.0 GHz

Safe state transitions

High linearity

1 dB compression (P1dB): 31 dBm typical

Input third-order intercept (IP3): 54 dBm typical

RF settling time (0.05 dB final RF output): 250 ns

Single supply operation: 3.3 V to 5.0 V

ESD rating: Class 2 (2 kV human body model (HBM))

24-lead, 4 mm × 4 mm LFCSP package: 16 mm

2

APPLICATIONS

Cellular infrastructure

Microwave radios and very small aperture terminals (VSATs)

Test equipment and sensors

IF and RF designs

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

GENERAL DESCRIPTION

The HMC1119 is a broadband, highly accurate, 7-bit digital

attenuator, operating from 0.1 GHz to 6.0 GHz with 31.5 dB

attenuation control range in 0.25 dB steps.

The HMC1119 is implemented in a silicon process, offering

very fast settling time, low power consumption, and high ESD

robustness. The device features safe state transitions and is

optimized for excellent step accuracy and high linearity over

frequency and temperature range. The RF input and output are

internally matched to 50 Ω and do not require any external

matching components. The design is bidirectional; therefore,

the RF input and output are interchangeable.

The HMC1119 has an on-chip regulator that can support a wide

supply operating range from 3.3 V to 5.0 V with no performance

change in electrical characteristics. The HMC1119 incorporates a

driver that supports serial (3-wire) and parallel controls of the

attenuator.

The HMC1119 comes in a RoHS-compliant, compact, 4 mm ×

4 mm LFCSP package.

A fully populated evaluation board is available.

24

23

22

21

20

19

78

9

10

11

12

1

2

3

4

5

6

18

17

16

15

14

13

D0

P/S

GND

ATTNIN

GND

SERNIN

CLK

LE

GND

ATTNOUT

PACKAGE

BASE

GND

GND

SERIAL/

PARALLEL

CONTROL

7-BIT

DIGITAL

ATTENUATOR