HMC542ALP4E

HMC542ALP4E Datasheet


HMC542ALP4 / 542ALP4E

Part Datasheet
HMC542ALP4E HMC542ALP4E HMC542ALP4E (pdf)
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Attenuators - Digital - SMT

HMC542ALP4 / 542ALP4E
v06.0312

Designer’s Kit Available
dB LSB GaAs MMIC 6-BIT DIGITAL

SERIAL CONTROL ATTENUATOR, DC - 4 GHz

The HMC542ALP4 E is ideal for
• Cellular/PCS/3G Infrastructure
• ISM, MMDS, WLAN, WiMAX, & WiBro
• Microwave Radio & VSAT
• Test Equipment and Sensors

Functional Diagram
dB LSB Steps to dB TTL/CMOS Compatible Serial Data Interface SPI Compatible Serial Output ± dB Typical Step Error Single +5V Supply 24 Lead 4x4mm QFN Package:

The HMC542ALP4 E is a broadband 6-bit GaAs IC digital attenuator with a CMOS compatible serial to parallel driver in low cost leadless surface mount package. This serial control digital attenuator incorp rates off chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. Covering DC to 4 GHz, the insertion loss is dB and the attenuator bit values are LSB , 1, 2, 4, 8, and 16 dB for a total attenuation of dB. Attenuation accuracy is excellent at dB typical step error with an IIP3 of +45 dBm. Six bit serial control words are used to select each attenuation state. A single Vdd bias of +5V is required.

Electrical Specifications, TA = +25° C, with Vcc = +5V

Parameter Insertion Loss Attenuation Range

Frequency GHz Min.

Typ.

DC - GHz
- GHz
- GHz

DC - GHz

Max.

Units

Return Loss RF1 & RF2, All Atten. States

DC - GHz

Attenuation Accuracy Referenced to Insertion Loss All Attenuation States - dB States - dB States All Attenuation States - dB States - dB States

Input Power for dB Compression

Input Third Order Intercept Point Two-Tone Input Power= 0 dBm Each Tone

Switching Characteristics
tRISE, tFALL 10/90% RF tON, tOFF 50% CTL to 10/90% RF

DC - GHz - GHz - GHz - GHz - GHz - GHz
- GHz
- GHz - GHz

DC - GHz
± + 3% of Atten. Setting Max. ± + 3% of Atten. Setting Max. ± + 4% of Atten. Setting Max. ± + 3% of Atten. Setting Max ± + 5% of Atten. Setting Max ± + 5% of Atten. Setting Max.
35 45

For price, delivery and to place orders Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone 978-250-3343 Fax 978-250-3373 Order On-line at

Application Support Phone 978-250-3343 or

Attenuators - Digital - SMT

HMC542ALP4 / 542ALP4E
v06.0312
dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR, DC - 4 GHz

Insertion Loss
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material Rogers 4350 or Arlon 25FR

For price, delivery and to place orders Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone 978-250-3343 Fax 978-250-3373 Order On-line at

Application Support Phone 978-250-3343 or
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Datasheet ID: HMC542ALP4E 517945