Part Review and Datasheet Update

flux

Completed the LM35 cleanup: VOUT is now pin 2, GND is now pin 3, and pin types/descriptions are set to standard values. Updated the concise description to: “Precision analog temperature sensor, 10 mV/°C, TO-92.”
Open items:
  • None found.
Verification:
  • ERC/DRC/component review returned no ERROR/WARNING/OPEN/UNCERTAIN issues.
adrian95

adrian95

Provide a concise direct to the point best description for this part based from the datasheet. i don't need a very long but useless description.

flux

I’ll replace the bloated description with a concise datasheet-based one.

flux

Updated the description to:
Precision Celsius analog temperature sensor, 10 mV/°C output, 4–30 V supply, TO-92.
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VOUT
Pin Number
2
VS+
Pin Number
1
GND
Pin Number
3

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LM35CAZ Part Review
Sources
Existing Flux Part Information Observed
  • Project/part name: LM35CAZ
  • Description: LM35CAZ
  • Schematic terminals: 3
    • VS+ terminal: Pin Number = 1; Pin Type = Unspecified
    • GND terminal: Pin Number = 2; Pin Type = Unspecified
    • VOUT terminal: Pin Number = 3; Pin Type = Unspecified
  • Layout footprint: default footprint with 3 pads named VS+, VOUT, and GND; footprint text includes Z03A, which corresponds to a TO-92-style 3-lead package marking from the imported footprint data.
  • Datasheet state: the project had no datasheet URL accessible to the datasheet query tool. I recorded the official TI datasheet URL in project Implementation Details because no direct top-level Datasheet URL mutation was available in the accessible metadata tool.
Datasheet Key Specs for LM35CAZ/NOPB
  • Manufacturer: Texas Instruments
  • Orderable MPN: LM35CAZ/NOPB
  • Device family: LM35 precision centigrade temperature sensor
  • Package: TO-92, TI package code LP, 3 pins
  • Package body size: approximately 4.30 mm × 4.30 mm nominal
  • Temperature range for LM35CAZ/NOPB: −40°C to +110°C
  • Supply voltage: +4 V to +30 V recommended operating range
  • Output scale factor: +10 mV/°C nominal
  • Accuracy for LM35CA grade:
    • ±0.2°C typical, ±0.5°C tested limit at 25°C
    • ±0.4°C typical, ±1°C tested limit at high-temperature endpoint
    • ±0.4°C typical, ±1.5°C design limit at low-temperature endpoint
  • Current drain: less than 60 µA feature value; LM35CA table shows 56 µA typical and 67 µA tested limit at VS = 5 V, 25°C
  • Output impedance: low impedance output; datasheet feature calls out 0.1 Ω for 1 mA load
Datasheet Pinout Cross-check
TI datasheet TO-92 / LP pin configuration lists, for the LM35 TO-92 package:

Table

PinDatasheet functionFlux terminal observedStatus
1+VSVS+Match
2VOUTGNDMismatch
3GNDVOUTMismatch
Symbol / Pin Description Findings
  • Symbol has the correct three functional terminals: VS+, VOUT, and GND.
  • Pin numbering for VOUT and GND is swapped versus the TI datasheet.
  • All terminal Pin Type values are currently Unspecified; recommended pin typing is:
    • VS+ / pin 1: Power input
    • VOUT / pin 2: Analog output
    • GND / pin 3: Ground / power return
Footprint Findings
  • Pad count matches the datasheet: 3 leads.
  • The imported footprint appears to be a TO-92-style footprint, with Z03A text present.
  • Because the schematic pin numbers for VOUT and GND are swapped, the footprint pad mapping should be considered incorrect until pins 2 and 3 are corrected.
  1. Set the official Datasheet URL property to https://www.ti.com/lit/ds/symlink/lm35.pdf if/when a top-level part Datasheet field is available.
  2. Change VOUT terminal Pin Number from 3 to 2.
  3. Change GND terminal Pin Number from 2 to 3.
  4. Set pin types/descriptions:
    • VS+ pin 1: positive supply input, +4 V to +30 V
    • VOUT pin 2: analog temperature output, 10 mV/°C
    • GND pin 3: ground/reference return
  5. Re-check footprint pad numbering after the schematic pin-number correction.

  • Sources

  • Existing Flux Part Information Observed

  • Datasheet Key Specs for LM35CAZ/NOPB

  • Datasheet Pinout Cross-check

  • Symbol / Pin Description Findings

  • Footprint Findings

  • Recommended Corrections

Documents

Assets

LM35-thumb.png

LM35-thumb.png

LM35-thumbThumbnail
kicad_mod

LM35CAZ

LM35CAZ&slash_LFT4.kicad_modFootprint
svg

LM35CAZ

LM35CAZ Symbol.svgDefault

LM35

LM35 thumbnail
Precision Celsius analog temperature sensor, 10 mV/°C output, 4–30 V supply, TO-92.
Features 1• Calibrated Directly in Celsius (Centigrade) • Linear + 10-mV/°C Scale Factor • 0.5°C Ensured Accuracy (at 25°C) • Rated for Full −55°C to 150°C Range • Suitable for Remote Applications • Low-Cost Due to Wafer-Level Trimming • Operates From 4 V to 30 V • Less Than 60-μA Current Drain • Low Self-Heating, 0.08°C in Still Air • Non-Linearity Only ±¼°C Typical • Low-Impedance Output, 0.1 Ω for 1-mA Load

Properties

Official datasheet: https://www.ti.com/lit/ds/symlink/lm35.pdf

LM35CAZ

Texas Instruments

Temperature Sensor

ti.com/lit/ds/symlink/lm35.pdf

U

parametric-v1

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