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Part Review and Datasheet Update

flux

3:20

Exploring datasheet options.

Considering datasheet extraction.

Analyzing the schematic.

Reviewing the bill of materials.

Searching web for: "SparkFun BOB-12918 MCP4725 breakout datasheet MCP4725 PDF official"

Analyzing the PCB layout.

Found 10 results.

Looking for "device description and special features" in MCP4725-Data-Sheet-20002039E.pdf

Looking for "absolute maximum ratings" in MCP4725-Data-Sheet-20002039E.pdf

Looking for "recommended operating conditions" in MCP4725-Data-Sheet-20002039E.pdf

Looking for "electrical characteristics supply voltage current reference output accuracy settling time I2C speed" in MCP4725-Data-Sheet-20002039E.pdf

Looking for "pin descriptions" in MCP4725-Data-Sheet-20002039E.pdf

Looking for "package information SOT-23-6 dimensions" in MCP4725-Data-Sheet-20002039E.pdf

Looking for "product description and key board features" in MCP4725_Breakout_v14.pdf

Looking for "pin descriptions for SCL SDA VCC GND VOUT and mounting holes" in MCP4725_Breakout_v14.pdf

Looking for "board dimensions and mounting hole dimensions" in MCP4725_Breakout_v14.pdf

Looking for "schematic or pin mapping for header pin numbers 1 through 6" in MCP4725_Breakout_v14.pdf

Running multiple web searches.

Looking for "header pin names and mapping for pins 1 through 6 and mounting holes" in MCP4725_Breakout_v14-Schematic.pdf

Looking for "onboard components and their values including pullups capacitors and address jumper" in MCP4725_Breakout_v14-Schematic.pdf

Looking for "identify whether VOUT pin is labeled OUT or VOUT and whether there are two GND pins" in MCP4725_Breakout_v14-Schematic.pdf

Summarizing package dimensions.

I completed the review. Since this part project already has a datasheet-related URL set in its properties, I did not modify the part properties in step 2.

1) Available part information in the project

FieldValue
Project / PartBOB-12918
DescriptionMCP4725 DAC BREAKOUT
ManufacturerSparkFun
MPNBOB-12918
Datasheet URL propertyhttps://www.sparkfun.com/products/12918
Schematic contentsTerminal-only breakout symbol with 8 terminals
Footprint assetBOB12918.kicad_mod
Breakout electrical pinsSCL, SDA, VCC, GND_1, OUT, GND_2
Mechanical pinsMH1, MH2
Nets in schematicNone defined yet

2) Datasheet/source status

ItemStatus
Existing project datasheet-related URLPresent
URL typeSparkFun product page, not a direct PDF datasheet
Additional references foundSparkFun breakout PDF and official MCP4725 silicon datasheet
3) Datasheet scan summary

Core device and board summary

CategorySummary
Breakout functionSparkFun breakout for MCP4725, a single-channel 12-bit I2C DAC with EEPROM
Board-level extrasI2C pull-ups, address jumper, decoupling capacitor, dual GND breakout, two mounting holes
InterfaceI2C: 100 kbps, 400 kbps, 3.4 Mbps
Supply range2.7 V to 5.5 V
OutputRail-to-rail buffered analog output
EEPROMNonvolatile DAC setting retention through power-off
Typical settling time6 µs

Absolute maximum ratings

ParameterRating
VDD6.5 V
All inputs/outputs w.r.t. VSS-0.3 V to VDD + 0.3 V
Current at input pins±2 mA
Current at supply pins±50 mA
Current at output pins±25 mA
Storage temperature-65°C to +150°C
Ambient temperature with power applied-55°C to +125°C
Maximum junction temperature+150°C
ESD>= 6 kV HBM, >= 400 V MM

Recommended operating conditions

ParameterCondition
Supply voltage2.7 V to 5.5 V
Operating temperature-40°C to +125°C
VIH for SDA / SCL0.7 x VDD min
VIL for SDA / SCL0.3 x VDD max
A0 high0.8 x VDD min
A0 low0.2 x VDD max
Stable capacitive loadUp to 1000 pF
EEPROM load ramp rate1 V/ms min

Electrical characteristics

ParameterValue
Resolution12 bits
Supply current210 µA typ, 400 µA max
Power-down current0.06 µA typ, 2.0 µA max
INL±2 LSB typ, ±14.5 LSB max
DNL±0.2 LSB typ, ±0.75 LSB max
Offset error0.75% FSR typ
Gain error-0.1% FSR typ, ±2% FSR max
ReferenceUses VDD as reference
Settling time6 µs typ
Pin descriptions

Breakout pins in this project

Project terminalPin number in projectBreakout function
SCL1I2C clock
SDA2I2C data
VCC3Supply
GND_14Ground
OUT5DAC analog output
GND_26Ground
MH1MH1Mounting hole
MH2MH2Mounting hole

Silicon pin functions from the IC datasheet

IC pin nameFunction
VOUTAnalog output
VDDSupply and DAC reference input
VSSGround
SDAOpen-drain I2C data, requires pull-up
SCLOpen-drain I2C clock, requires pull-up
A0I2C address select

Board-specific features found in the SparkFun schematic

FeatureDetail
I2C pull-upsTwo 4.7k Resistor pull-ups on SDA and SCL
DecouplingOne 0.1uF Capacitor
Address selection10k Resistor and solder jumper; default address 0x60, alternate 0x61
GroundsTwo breakout ground pins are intentionally provided

Package and physical dimensions

ItemDimension / Detail
IC package option6-lead SOT-23 or DFN option in silicon datasheet
IC package drawing dataExact SOT-23 mechanical drawing was not returned from the scanned Microchip PDF pages
Part-project footprint outline15.24 mm x 15.24 mm from the footprint asset
Header pad pitch2.54 mm
Header drill1.11 mm
Header pad size1.665 mm
Mount hole drill2.0 mm
Mount hole pad size3.0 mm
Mount-hole center spacing11.43 mm vertical
4) Symbol and footprint cross-check

Cross-check results

CheckResultNotes
Pin count vs breakoutPassProject has 6 electrical breakout pins plus 2 mounting holes
Pin numberingPassProject numbering 1..6 matches SparkFun breakout header mapping
Pin namingPassSCL, SDA, VCC, GND_1, OUT, GND_2 align with the breakout schematic
Dual GND pinsPassSparkFun schematic shows two separate ground breakout pins; project reflects that
Mounting holesPassTwo mechanical holes exist in both symbol and footprint
Footprint geometryPassFootprint dimensions and hole spacing are internally consistent with a small breakout board
Risk of board-ordering confusionWarningProject description/MPN clearly describe the breakout, but the datasheet property points to the product page rather than a direct PDF
Risk of bare-IC ordering confusionWarningThe part project represents the breakout board, not the bare MCP4725 IC; users could confuse these if they look only at the silicon datasheet
Risk of manufacturing failure from pin mismatchNo mismatch foundI did not find a header pin-order or mounting-hole mismatch
Risk of schematic misuseMinor warningNo nets are defined yet in the part project, so functional validation of connectivity is not possible from the current schematic alone

Important flags

SeverityFindingWhy it matters
MediumDatasheet property is a product page, not a direct datasheet PDFMakes downstream review and part verification less reliable
MediumMetadata is incomplete for package typingThe project does not explicitly state that this is a breakout module footprint, not a bare IC package
LowPin terminal types are all UnspecifiedNot a manufacturing blocker, but it weakens ERC clarity if reused in larger designs

Bottom line

VerdictOutcome
Symbol-to-breakout pin mappingLooks correct
Footprint-to-breakout intentLooks correct
Manufacturing-critical mismatch foundNo
Metadata cleanup recommendedYes
If you want, I can next check whether I’m allowed to update the part metadata so the datasheet points directly to the PDF and the package/part description more clearly indicate that this is a SparkFun breakout board module rather than the bare MCP4725 IC.
Fix datasheet property
Check review issues
Inspect footprint details
48 days
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MH2
VCC
GND_2
SCL
SDA

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BOB-12918

BOB-12918 thumbnail
MCP4725 - 12 Bit 3.4M Samples Per Second Digital to Analog Converter (DAC) Evaluation Board #module

Properties

BOB-12918

SparkFun

Module

sparkfun.com/products/12918

IC

creativecommons.org/licenses/by/4.0/

Pricing & Availability

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