Hittite HMC288MS8 Datasheet

MICROWAVE CORPORATION

2 dB LSB GaAs IC 3 - BIT DIGITAL ATTENUATOR 0.7 - 3.7 GHz

HMC288MS8

2

ATTENUATORS

SMT

FEBRUARY 2001

Features

2 dB LSB STEPS TO 14 dB

General Description

The HMC288MS8 is a broadband 3-bit posi­tive control GaAs IC digital attenuator in an 8

SINGLE POSITIVE CONTROL PER BIT

lead MSOP surface mount plastic package.
Covering 0.7 to 3.7 GHz the insertion loss is

MONOTONIC : ±0.3 dB BIT ERROR TYPICAL
MINIATURE MSOP-8 PACKAGE, 14.8 mm

2

typically less than 1.2 to 1.8 dB. The attenu­ator bit values are 2 (LSB), 4, and 8 for a total
attenuation of 14 dB. Accuracy is excellent at
± 0.3 dB typical with an IIP3 of up to +51 dBm.
Three bit control voltage inputs, toggled be­tween 0 and +3 to +5V, are used to select each
attenuation state at less than 50 uA each. A
single Vdd bias of +3 to +5V applied through an
external 5KΩ resistor is required. The
HMC288MS8 is ideal for cellular, PCS, ISM,
MMDS, and WLL applications while occupy­ing less than 14.8 mm².

Guaranteed Performance

With Vdd =+3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated), -40 to +85 deg C

V00.0600

Parameter Frequency Min. Typ. Max. Units

0.7 - 1.4 GHz

Insertion Loss

Attenuation Range 0.7 - 3.7 GHz 14 dB

Return Loss (RF1 & RF2, Al l Atten.States)

Attenuation Accuracy:(Referenced to Insertion Loss)
All Attenuation States

All Attenuation States
All Attenuation States
All Attenuation States

InputPower for 0.1 dB Compression 5V3V0.7-3.7 GHz 25
Input Third Order Intercept Point

(Two-Tone Input Power = 0dBm Each)
Switching Characteristics

tRISE, tFALL (10/90%RF)
tON/tOFF (50% CTL to 10/90% RF

12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone] Web Site: www.hittite.com

1.4-2.3 GHz

2.3 - 2.7 GHz

2.7 - 3.7 GHz

0.7 - 1.4 GHz

1.4-2.3 GHz

2.3 - 2.7 GHz

2.7 - 3.7 GHz

0.7 - 1.4 GHz

1.4 - 2.3 GHz

2.3 - 2.7 GHz

2.7 - 3.7 GHz

5V3V0.7-3.7 GHz 51

0.7-3.7 GHz

14

11

10

9

± 0.3 + 3% of Atten. Setting Max
± 0.2 + 3% of Atten. Setting Max
± 0.3 + 3% of Atten. Setting Max
± 0.3 + 4% of Atten. Setting Max

1.0

1.3

1.5

1.7

17
15
14
12

22

47

560
600

1.4

1.7

2.0

2.3

dB
dB
dB
dB

dB
dB
dB
dB

dB
dB
dB
dB

dBm
dBm

dBm
dBm

ns
ns

2 - 56

MICROWAVE CORPORATION

2 dB LSB GaAs IC 3 - BIT DIGITAL ATTENUATOR 0.7 - 3.7 GHz

HMC288MS8

V00.0600

Insertion Loss

0

-0.5

-1

-1.5

-2

-2.5

INSERTION LOSS (dB)

-3

-3.5

-4

0.5 1 1.5 2 2.5 3 3.5 4

-40 C
+25 C

+85 C

FREQUENCY (GHz)

Normalized Attenuation

(Only Major States are Shown)

0

-2

-4

-6

-8

-10

-12

-14

NORMALIZED ATTENUATION (dB)

-16

0.5 1 1.5 2 2.5 3 3.5 4

2dB

14 dB 8 dB

4dB

FREQUENCY (GHz)

FEBRUARY 2001

Return Loss RF1, RF2

(

Only Major States are Shown)

0

-5

-10

-15

RETURN LOSS (dB)

-20

4dB

-25

0.5 1 1.5 2 2.5 3 3.5 4

2dB

8dB

FREQUENCY (GHz)

Absolute Bit Error vs
Attenuation State

1.5

1.2

3.5 GHz

0.9

0.6

2.4 GHz

BIT ERROR (dB)

0.3

0

2 4 6 8 10 12 14

ATTENUATION STATE (dB)

1.9 GHz

0.9 GHz

14 dB

2

ATTENUATORS

SMT

Note: All Data Typical Over Voltage (+3V to +5V) & Temperature (-40 to +85 deg.C).

12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone] Web Site: www.hittite.com

2 - 57