Products > Integrated Circuits (ICs) > RF Integrated Circuits > HMC629ALP4E

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RF Attenuator, DC to 10GHz, 45dB/3dB Step, 3.75dB Loss, 4bit, 3.3V to 5V, 30dBm, QFN-24

Manufacturer : Analog Devices, Inc
Package/Case : QFN-24
Product Categories : Attenuators
Datasheet: HMC629ALP4E Datasheet (PDF)
RoHs Status: Pb-free Halide free
Marking Code: H629A
In-stock: 297


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HMC629ALP4E Product Details

Typical Applications

The HMC629ALP4E is ideal for: 

• Cellular/3G Infrastructure 

• WiBro / WiMAX / 4G

 • Microwave Radio & VSAT

 • Test Equipment and Sensors

 • IF & RF Applications


3 dB LSB Steps to 45 dB 

Power-Up State Selection 

Low Insertion Loss: 2.25 dB 

TTL/CMOS Compatible, Serial, Parallel or Latched Parallel Control 

±0.25 dB Typical Step Error 

Single +3V or +5V Supply 

24 Lead 4x4mm SMT Package: 16mm2

General Description

The HMC629ALP4E is a broadband 4-bit GaAs IC Digital Attenuator in a low cost leadless SMT package.

This versatile digital attenuator incorporates off-chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. 

The dual mode control interface is CMOS/TTL compatible, and accepts either a three wire serial input or a 4-bit parallel word. 

The HMC629ALP4E is housed in a RoHS compliant 4x4 mm QFN leadless package, and requires no external matching components. 

Package Information

Part Number
Package Body Material
Lead Finish
MSL Rating
Package Marking [2]
RoHS-compliant Low Stress Injection Molded Plastic
100% matte Sn
MSL3 [1]
[1] Max peak reflow temperature of 260 °C

[2] 4-Digit lot number XXXX


  • 3 dB LSB steps to 45 dB
  • Power-up state selection
  • Low insertion loss: 2.25 dB
  • TTL/CMOS compatible, serial, parallel or latched parallel control
  • ±0.25 dB typical step error
  • Single +3V or +5V supply
  • 24 lead 4x4mm SMT package: 16mm2


  • Cellular/3G infrastructure
  • WiBro / WiMAX / 4G
  • Microwave radio & VSAT
  • Test equipment and sensors 
  • IF & RF applications

HMC629ALP4E Pinout
(Picture: Pinout)

HMC629ALP4E Block Diagram
(Picture: Diagram)

Technical Parameters

  • Attenuation Value
  • 45dB
  • Frequency Range
  • 0Hz ~ 10GHz
  • Impedance
  • 50 Ohms
  • Package / Case
  • 24-VFQFN Exposed Pad

HMC629ALP4E Datasheet

  • HMC629A Technical Documentation/Data sheet

HMC629ALP4E Related Products

Ratings and Reviews (1)

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  • **ICOL***

    Schnell wie beschrieben geliefert.Vielen Dank.

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Estimated Delivery Time: Jul 30 - Aug 04 days (choose Expedited at checkout).

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    90 days quality guarantee for all products.


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Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

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1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that HMC629ALP4E is the original manufacturer or agent of ADI?
We have a professional business development department to strictly test and verify the qualifications of ADI original manufacturers and agents. All ADI suppliers must pass the qualification review before they can publish their HMC629ALP4E devices; we pay more attention to the channels and quality of HMC629ALP4E products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of HMC629ALP4E chips? Including ADI original factory information, Attenuators application, HMC629ALP4E pictures?
You can use Jotrin's intelligent search engine, or filter by Attenuators ; Digital Step Attenuators category, or find it through Analog Devices, Inc Information page.
Q: Are the ADI's HMC629ALP4E price and stock displayed on the platform accurate?
The ADI's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for HMC629ALP4E, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
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Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of HMC629ALP4E?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the HMC629ALP4E we delivered, we will accept the replacement or return of the HMC629ALP4E only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of HMC629ALP4E.
(3)The HMC629ALP4E is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as HMC629ALP4E datasheet pdf, HMC629A pin diagram?
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Analog Devices, Inc

Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment. In 1967, the company published the first issue of its...
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