Part Information Review

adrian95

adrian95

Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.

flux

Review complete: the datasheet URL was already set, the 10 schematic terminals and 10 footprint pads match the datasheet pin names/count, but the part metadata needs cleanup: Part Type is mismatched, package metadata is missing, and all terminal Pin Type values are still Unspecified. Full details are in the FSA2268UMX Part Review project file.
Fix metadata
Run ERC/DRC
Pin type assignments
Verify land pattern

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FSA2268UMX Part Review
Scope
Reviewed available project metadata, schematic terminal symbol, footprint pad inventory, existing review checks, and the official onsemi datasheet already set on the project.
Datasheet URL
Datasheet-derived part information

Table

FieldDatasheet / official valueProject valueStatus
Manufacturer Part NumberFSA2268UMXFSA2268UMXMatch
Manufactureronsemi / ON SemiconductorON SemiconductorMatch
DescriptionLow-voltage dual SPDT analog switch, 0.4Ω typical RON, 16 kV ESDAnalog Switch Dual SPDT 10 pin UMLPAcceptable, but could be more specific
Package10-lead Quad Ultrathin Molded Leadless Package (UMLP), 1.4 × 1.8 mm, 0.4 mm pitchNot set as Package or Case Code propertyMissing metadata
Pin count1010 terminals / 10 footprint padsMatch
Part TypeAnalog switch / ICElectromechanical ComponentsMismatch
Designator PrefixIC is currently usedICAcceptable in this project, though U is also common for ICs
Key datasheet specs
  • Function: Low-voltage dual SPDT analog switch.
  • Supply voltage, recommended operating: 1.65 V to 4.30 V.
  • Supply voltage, absolute maximum: -0.5 V to 5.5 V.
  • Switch I/O voltage, recommended operating: 0 V to VCC.
  • Control input voltage, recommended operating: 0 V to VCC.
  • Typical on-resistance: 0.4 Ω at VCC = 3.0 V.
  • Maximum on-resistance: 0.55 Ω at VCC = 3.0 V test condition.
  • Bandwidth: >50 MHz.
  • Continuous switch current: 350 mA absolute maximum.
  • Pulsed switch current: 500 mA, 1 ms duration, <10% duty cycle.
  • Operating temperature: -40 °C to +85 °C.
  • ESD: HBM I/O-to-GND 13.5 kV, power-to-GND 16.0 kV, all other pins 9.0 kV; CDM 2.0 kV.
  • Package/land pattern: UMLP-10 body 1.4 × 1.8 mm, 0.4 mm pitch; recommended land pattern overall 1.70 × 2.10 mm.
Datasheet pin table vs schematic terminals

Table

Pin #Datasheet pin nameDatasheet functionProject terminalPin Type propertyStatus
11B1Data port1B1UnspecifiedName/number match; pin type incomplete
22B0Data port2B0UnspecifiedName/number match; pin type incomplete
32B1Data port2B1UnspecifiedName/number match; pin type incomplete
4GNDGroundGNDUnspecifiedName/number match; should be Ground
52AData port2AUnspecifiedName/number match; pin type incomplete
6S2Switch select inputS2UnspecifiedName/number match; should be Input
7S1Switch select inputS1UnspecifiedName/number match; should be Input
81AData port1AUnspecifiedName/number match; pin type incomplete
9VCCSupply voltageVCCUnspecifiedName/number match; should be Power In
101B0Data port1B0UnspecifiedName/number match; pin type incomplete
Recommended pin type mapping:
  • VCC: Power In
  • GND: Ground
  • S1, S2: Input
  • 1A, 2A, 1B0, 1B1, 2B0, 2B1: Passive or Bi-Directional. For analog switch pins, Passive is usually the cleanest ERC choice because these are analog switch terminals rather than digital GPIOs.
Footprint review
Project footprint/pad inventory contains 10 pads with the same functional names as the datasheet pins:
1B1, 2B0, 2B1, GND, 2A, S2, S1, 1A, VCC, 1B0.
This matches the datasheet pin count and names. The project index did not expose exact footprint pad geometry, so I could not fully verify pad dimensions/positions against the datasheet land pattern. Based on available information, no pad-count or pad-name mismatch was found.
Datasheet footprint target:
  • Package: 10-lead UMLP, 1.4 × 1.8 mm body, 0.4 mm pitch.
  • Recommended land pattern: 1.70 × 2.10 mm overall, 0.40 mm pitch, 0.225 mm land width, 0.563 mm typical land length with longer Pin 1 land shown.
Flux review checks
Automated review results available in the project:
  • Missing Footprints: Success.
  • Missing Properties: Success.
  • Missing Terminals: Success.
  • Missing Parametric Symbol Properties: Success.
Note: although the review reports success, the terminal Pin Type properties are all Unspecified; this is a quality/completeness issue for ERC semantics even if not currently flagged by the review.
Mismatches / issues flagged
  1. Part Type mismatch: Project says Electromechanical Components; datasheet part is an analog switch IC. Suggested property value: Analog Switch or Integrated Circuit depending on the library taxonomy you want to use.
  2. Missing package metadata: Add Package or Case Code = 10-UMLP, 1.4 × 1.8 mm, 0.4 mm pitch.
  3. Pin Type properties incomplete: All 10 terminals are currently Unspecified; set VCC/GND/control/data-port types as listed above.
  4. Description could be improved: Current description is mostly correct, but a clearer library-facing description would be: Low-voltage dual SPDT analog switch, 0.4Ω typical RON, 1.65–4.3V supply, 10-UMLP.
  5. Footprint geometry not fully verifiable from indexed data: Pad names/count match, but exact pad dimensions and coordinates were not available through the project index. If needed, inspect the KiCad footprint asset directly against onsemi Case 488AT / UMLP-10 land pattern.
  • Update Part Type from Electromechanical Components to Analog Switch or Integrated Circuit.
  • Add Package or Case Code.
  • Add Operating Voltage = 4.3 V.
  • Add Max Current = 0.35 A if using the datasheet continuous switch current limit.
  • Add Operating Temperature = -40°C to +85°C.
  • Set terminal pin types and short pin descriptions.

  • Scope

  • Datasheet URL

  • Datasheet-derived part information

  • Key datasheet specs

  • Datasheet pin table vs schematic terminals

  • Footprint review

  • Flux review checks

  • Mismatches / issues flagged

  • Recommended next edits

Documents

  • FSA2268UMX Part Review

Assets

kicad_mod

FSA2268UMX

FSA2268UMX.kicad_modFootprint
FSA2268UMX-thumb.png

FSA2268UMX-thumb.png

FSA2268UMX-thumbThumbnail
FSA2268UMX

FSA2268UMX

FSA2268UMX Symbol.svgDefault
stp

FSA2268UMX

FSA2268UMX.stp3D Model

FSA2268UMX

FSA2268UMX thumbnail
Audio Switch IC 2 Channel 10-UMLP (1.4x1.8)
The FSA2268UMX is a dual SPDT analog switch from ON Semiconductor (formerly Fairchild) that operates over a low supply voltage range (1.65 V to 4.3 V). It provides high-speed signal switching with ultra-low on-resistance (~0.4 Ω typical), making it suitable for audio, data, and general analog signal routing.
It is designed using a break-before-make switching architecture, meaning it disconnects the current path before connecting another, preventing short circuits or signal glitches.
Key Features Dual SPDT analog switch configuration (2 channels) Low operating voltage: 1.65 V to 4.3 V Ultra-low on-resistance (~0.4 Ω typical @ 3 V) High-speed switching (-3 dB bandwidth > 50 MHz) Break-before-make switching (prevents signal overlap) TTL-compatible control inputs Very low power consumption (low quiescent current) High ESD protection (up to 16 kV HBM) Small 10-pin µMLP/UMLP surface-mount package Operating temperature: -40°C to +85°C Typical Applications Smartphones and tablets Audio signal switching circuits Digital cameras Laptops and portable devices TVs, set-top boxes, LCD systems General-purpose analog signal routing

Properties

FSA2268UMX

Fairchild Semiconductor

Electromechanical Components

rocelec.widen.net/view/pdf/h0vdcpbecl/FAIRS34282-1.pdf?t.download=true&u=5oefqw

IC

creativecommons.org/licenses/by/4.0/

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