Part Information Review and Verification

flux

5:27

Searching web for: "Semtech LR1121IMLTRT official datasheet PDF"

Analyzing the PCB layout.

Analyzing the schematic.

Found 1 results.

Searching files for datasheets.

Fetching web page.

Found 1 results.

Searching for PDF links.

Running multiple web searches.

Found 1 results.

Found 1 results.

Fetching web page.

Found 1 results.

Running multiple web searches.

Found 1 results.

Found 1 results.

Running multiple web searches.

Found 1 results.

Found 1 results.

Found 1 results.

Running multiple web searches.

Found 1 results.

Found 1 results.

Found 1 results.

Looking for "What are the key LR1121 specifications, package, pin count, and any pin/function details available on this official page? Also identify whether the page includes a datasheet link or datasheet metadata." in lr1121

Looking for "Extract the LR1121 pin table, package info, and any device description or electrical key specs visible from this datasheet source. Focus on pin names, pin numbers, and descriptions." in LR1121_V01.html

Searching the project.

Searching for factual information.

Searching 3 domains.

Summarizing metadata needs.

Searching 3 domains.

Gathering asset details.

Searching fetch_url.

Looking for "Find the product description, package/package type, and pin count for LR1121IMLTRT." in PdIx6QpZ_oZmdRVW2iW.ciZPBKY8nZLQpybO9K0Bo.s

Clarifying datasheet details.

Search complete — 122 results across 5 domains.

Looking for "Extract the LR1121 datasheet title, package, pin table, and key specs from this datasheet URL. Confirm whether this is the official datasheet for LR1121IMLTRT." in PdIx6QpZ_oZmdRVW2iW.ciZPBKY8nZLQpybO9K0Bo.s

Deciding on citations.

I reviewed the part project and cross-checked it against the available LR1121 datasheet sources.
Part information found

Project metadata

FieldValue
MPNLR1121IMLTRT
ManufacturerSemtech
Part TypeIntegrated Circuits
Designator PrefixU
DescriptionRF Transceiver LR1121 LoRa Connect Dual-band Wireless Transceiver
PackageQFN32 5 x 5 mm
Pin count32 signal pins + exposed pad
Footprint assetQFN50P500X500X100-33N.kicad_mod
Symbol assetLR1121IMLTRT_0_0 Symbol.svg
3D model assetLR1121IMLTRT.step
Datasheet URL status
A datasheet URL is already set in the project as Datasheet URL, so I did not add or overwrite a separate Datasheet property.

Key specs confirmed

SpecValue
Device typeUltra-low-power multi-band LoRa transceiver
Bands150 to 960 MHz, 2.4 GHz, 1.525 to 1.660 GHz, 1.9 to 2.1 GHz
ModulationsLoRa, (G)FSK, LR-FHSS, Sigfox on sub-GHz
Max TX power+22 dBm sub-GHz, up to +11.5 dBm at 2.4 GHz
RX current5.4 mA
Sensitivity-141 dBm
CryptoAES-128
Reference clocks32 MHz main crystal/TCXO, 32.768 kHz low-frequency clock
Symbol / footprint / pin cross-check What matches
  • The project package matches the datasheet family/package: QFN32 5 x 5 mm.
  • The footprint naming ending in 33N is consistent with a 32-pin QFN plus exposed pad.
  • The layout contains the expected full pad set for the package, including the exposed pad.
  • Most terminal names and pin numbers align with the datasheet:
    • GPIO/DIO set
    • RF pins
    • power pins
    • DNC pins
    • crystal pins

Mismatches / issues to flag

AreaProjectDatasheetStatus
Exposed pad numberingGND__1 is pin 33Exposed pad listed as pin 0 / exposed ground padMismatch
Reset pin naming~{RESET}NRESETMinor naming difference
Crystal pin typeXTA marked Inputspecial crystal/reference pinType may be too specific
Crystal pin typeXTB marked Passivespecial crystal/reference pinType may be inconsistent
DC-DC switch pin typeDCC_SW marked Outputspecial switcher output / no simple I/O type in datasheet tableReview recommended
Pin-description sanity check
  • The digital I/O terminals look consistent.
  • RF pin naming looks consistent.
  • Power pins look consistent.
  • DNC coverage looks consistent: the project includes all expected DNC positions.
  • The main issue is the exposed pad representation: the project models it as a second ground terminal, but the numbering does not match the datasheet convention.
Bottom line
  • Overall: the part project looks mostly correct.
  • Main issue: the exposed pad ground terminal numbering should be reviewed.
  • Minor cleanup items: align reset naming and consider normalizing the terminal types for the crystal and DC-DC switch pins.
If you want, I can next fix the flagged symbol terminal metadata so it matches the datasheet more closely.
Fix terminal metadata
Check footprint dimensions
Review power pins
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LR1121IMLTRT

LR1121IMLTRT thumbnail
IC RF TxRx Only General ISM > 1GHz LoRa™ 150MHz ~ 2.5GHz 32-VFQFN Exposed Pad

Properties

LR1121IMLTRT

Semtech

Integrated Circuits

semtech.my.salesforce.com/sfc/p/#E0000000JelG/a/3n000000vByp/PdIx6QpZ_oZmdRVW2iW.ciZPBKY8nZLQpybO9K0Bo.s

U

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