SSI2130 Part Review

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Pin metadata is applied; I’m verifying that the pin numbers/names stayed unchanged and that the final orientations/orders match the requested layout.
Created a project doc

SSI2130 Part Review

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Date: 2026-07-20 Project: silicon-yard/ssi2130

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Completed the SSI2130 datasheet review and applied pin metadata updates directly to the schematic component without changing, replacing, renumbering, or remapping any pins. Power pins are ordered first, ground pins last, remaining pins are balanced left/right, and EP is marked Not Connected per the datasheet.
Open items:
  • Project MPN is SSI2130, while the orderable datasheet MPN is SSI2130Q-RT.
  • Existing Datasheet URL was already set, so I did not overwrite it with the official Sound Semiconductor URL.
  • Project description has a typo: “Sound Semicondutor”.
Detailed results are in SSI2130 Part Review.
Fix metadata and verify
Fix part metadata
Run ERC DRC
Check EP isolation
Export review report
HARD_SYNC
Pin Number
17
EXPO_SCALE
Pin Number
22
TRI_OUT
Pin Number
1
DGND
Pin Number
15
SINE_OUT
Pin Number
24
SQUARE_OUT
Pin Number
28
SAW_MIX
Pin Number
10
VREF
Pin Number
23
SOFT_SYNC
Pin Number
19
V-
Pin Number
8
HF_TRACK
Pin Number
6
AUX2_IN
Pin Number
5
V+
Pin Number
27
SINE_IN+
Pin Number
2
TCAP
Pin Number
14
PULSE_MIX
Pin Number
11
BW_COMP
Pin Number
26
EXPO_FREQ
Pin Number
7
MIX_OUT
Pin Number
25
HFT_BASE
Pin Number
20
AUX2_MIX
Pin Number
13
AUX1_MIX
Pin Number
12
AUX1_IN
Pin Number
4
PWM_IN+
Pin Number
32
AGND
Pin Number
16
TIME_REVERSE
Pin Number
18
EP
Pin Number
33
LIN_FREQ
Pin Number
21
SINE_IN-
Pin Number
3
SAW_OUT
Pin Number
29
TRI_MIX
Pin Number
9
PULSE_OUT
Pin Number
30
PWM_IN-
Pin Number
31

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SSI2130 Part Review
Date: 2026-07-20
Sources
Current part metadata reviewed

Table

FieldCurrent / observed valueDatasheet / official referenceReview result
Part nameSSI2130SSI2130Match
Manufacturer Part NumberSSI2130Ordering information lists SSI2130Q-RT for 32-lead 4x4 QFN tape-and-reel; SSI2130 is the base IC nameFlag: consider using SSI2130Q-RT if the part is intended to represent the orderable packaged component
Manufacturer NameSound SemiconductorSound SemiconductorUpdated in project properties
Part TypeIntegrated CircuitFatkeys voltage controlled oscillator ICUpdated in project properties
Designator PrefixUIC conventionMatch
DescriptionRev. 2.4 / IPC 7351B / 0.9mm / Sound SemicondutorRev. 2.4, Sound Semiconductor, 32-lead 4x4 QFN/PQN32Flag: typo Semicondutor; description should mention Sound Semiconductor SSI2130 voltage controlled oscillator, 32-lead 4x4 QFN/PQN32
Datasheet URLSet to official PDF URLOfficial PDF at Sound Semiconductor downloadsUpdated in project properties
Terminal count3332 electrical terminals plus exposed padMatch mechanically; EP needs do-not-connect guidance
Package / footprintFootprint asset QFN40P400X400X90-33N.kicad_mod32-lead 4x4 QFN, SSI package ID PQN32Match
Note: the Flux library search index still reported an empty Datasheet URL immediately after the project metadata update, likely because the published library index had not refreshed. The current project metadata and datasheet query both resolve the official URL.
Key datasheet specs

Table

CategorySpec
FunctionFatkeys voltage controlled oscillator with triangle, saw, pulse/PWM, open-collector square, sine shaper, and five-channel mixer
PackageSSI2130Q-RT, 32-lead 4x4 QFN, SSI package ID PQN32
V+ supply+4.75 V min, +5.0 V typ, +5.25 V max; regulated 5 V required
V- supply-4.75 V min to -18 V max; regulated negative supply recommended
Supply currentISY+ typ 3.75 mA; ISY- typ -2.90 mA
VREF2.49 V min, 2.5 V typ, 2.51 V max; low-noise low-impedance reference required
TemperatureOperating -40 C to +85 C; storage -65 C to +150 C
VCO rangeFrequency sweep range 1000:1 calibrated to +/-1 cent error
Max frequency60 kHz typ with TCAP = 3.9 nF
TCAPRecommended 3.9 nF low dielectric absorption / low tempco capacitor to ground
Square outputOpen collector; requires external pull-up, maximum high level must be <= V+
Mixer outputHigh-compliance current output; recommended max output current 500 uA
Exposed padOptional PCB land pad; if provided, it must not connect to ground or any other net
Footprint cross-check
Current footprint asset details from the KiCad footprint embedded in the layout:
  • 32 perimeter pads plus pad 33 / EP.
  • Nominal body fab outline: 4.0 mm x 4.0 mm.
  • Pitch: 0.4 mm.
  • Perimeter pad size: 0.22 mm x 0.73 mm.
  • Exposed pad: 2.6 mm x 2.6 mm.
  • Height implied by footprint name: 0.90 mm.
Official PQN32 package dimensions used for review:

Table

ParameterOfficial PQN32 valueCurrent footprintResult
Terminals32 + exposed pad32 + pad 33Match
Body D/E3.924 mm to 4.076 mm4.0 mm nominalMatch
Pitch e0.400 mm typ0.4 mmMatch
Terminal width b0.150 mm to 0.250 mm0.22 mm land widthReasonable match
Terminal length L0.324 mm to 0.476 mm package lead0.73 mm PCB land lengthReasonable land-pattern extension; not a package-to-pad one-to-one dimension
Exposed pad D1/E12.500 mm to 2.700 mm2.6 mm x 2.6 mmMatch
Height Aup to about 0.90 mm0.90 mm in footprint nameMatch
A web scrape returned one contradictory 5x5 mm / 0.5 mm result for the package-outline PDF. This was rejected as an extraction error because the SSI2130 datasheet, official package-outline references, and independent review all agree on 4x4 mm / 0.4 mm PQN32.
Symbol / terminal pin cross-check

Table

PinCurrent terminalCurrent Pin TypeDatasheet pin nameResult / note
1TRI_OUTOutputTRI OUTMatch
2SINE_IN+InputSINE IN+Match
3SINE_IN-InputSINE IN-Match
4AUX1_INInputAUX 1 INMatch
5AUX2_INInputAUX 2 INMatch
6HF_TRACKOutputHF TRACKMatch; datasheet describes current output
7EXPO_FREQInputEXPO FREQMatch
8V-Power InV-Match as negative supply
9TRI_MIXInputTRI MIXMatch
10SAW_MIXInputSAW MIXMatch
11PULSE_MIXInputPULSE MIXMatch
12AUX1_MIXInputAUX 1 MIXMatch
13AUX2_MIXInputAUX 2 MIXMatch
14TCAPInputTCAPMatch; could also be treated as passive/analog timing-cap node
15DGNDPower InDGNDFunction matches; pin type could be Ground rather than Power In
16AGNDPower InAGNDFunction matches; pin type could be Ground rather than Power In
17HARD_SYNCInputHARD SYNCMatch
18TIME_REVERSEInputTIME REVERSEMatch
19SOFT_SYNCInputSOFT SYNCMatch
20HFT_BASEInputHFT BASEMatch
21LIN_FREQInputLIN FREQMatch
22EXPO_SCALEInputEXPO SCALEMatch
23VREFInputVREFMatch
24SINE_OUTOutputSINE OUTMatch
25MIX_OUTOutputMIX OUTMatch; current output
26BW_COMPInputBW COMPMatch; compensation node
27V+Power InV+Match as positive supply
28SQUARE_OUTOutputSQUARE OUTFunctional match, but pin type should ideally be Open Collector
29SAW_OUTOutputSAW OUTMatch
30PULSE_OUTOutputPULSE OUTMatch
31PWM_IN-InputPWM- / PWM IN-Match
32PWM_IN+InputPWM+ / PWM IN+Match
33EPPassiveExposed padMechanical match, but electrical treatment should be Not Connected / DNC; datasheet says any PCB land pad must not connect to ground or any net
  1. Datasheet URL was missing from project metadata at inspection time: updated project metadata to https://www.soundsemiconductor.com/downloads/ssi2130datasheet.pdf.
  2. Orderable MPN ambiguity: current MPN is SSI2130; datasheet orderable part for this package is SSI2130Q-RT. If this Flux part is intended to be the concrete QFN/tape-and-reel component, update Manufacturer Part Number to SSI2130Q-RT.
  3. Description typo and incomplete package naming: current description says Sound Semicondutor; should be corrected to Sound Semiconductor and ideally include Voltage Controlled Oscillator, 32-lead 4x4 QFN/PQN32.
  4. Package metadata missing at the property level: footprint is correct, but adding Package or Case Code = 32-lead 4x4 QFN / PQN32 would make sourcing and review clearer.
  5. Pin Description properties are missing from the inspected terminals: the symbol has pin names and numbers, but not datasheet-derived descriptions. Add Pin Description text to each terminal if detailed in-symbol documentation is desired.
  6. SQUARE_OUT pin type: currently Output; datasheet calls it open-collector and requires an external pull-up. Recommend changing Pin Type to Open Collector.
  7. DGND/AGND pin types: currently Power In; datasheet defines both as grounds. Consider using Ground if supported in this part-symbol workflow.
  8. EP electrical guidance: current EP pad is mechanically correct, but it is exposed as a passive terminal. Recommend renaming/describing it as EP_DNC or setting Pin Type to Not Connected, with a pin description: Exposed pad may be landed for assembly, but must be left electrically floating; do not connect to AGND, DGND, or any net.
Changes applied in this review
  • Updated project metadata: Datasheet URL, Manufacturer Name, and Part Type.
  • No terminal names, pin numbers, pin types, pin descriptions, footprint pads, or package geometry were changed during this review.
Overall verdict
The SSI2130 symbol pin numbers/names and the QFN footprint geometry substantially match the official datasheet and package outline. The highest-priority issue is not geometry; it is preventing accidental connection of the exposed pad to ground or another net. The next cleanup items are metadata polish: orderable MPN, package property, corrected description, and richer pin descriptions.

  • Sources

  • Current part metadata reviewed

  • Key datasheet specs

  • Footprint cross-check

  • Symbol / terminal pin cross-check

  • Mismatches and recommended follow-up fixes

  • Changes applied in this review

  • Overall verdict

Documents

Assets

kicad_mod

SSI2130

QFN40P400X400X90-33N.kicad_modFootprint
image1.png

image1.png

image1Thumbnail
kicad_mod

F_QFN40P400X400X90-33N.kicad_mod

F_QFN40P400X400X90-33N
SSI2130

SSI2130

SSI2130 Symbol.svgDefault
step

SSI2130

SSI2130.step3D Model

SSI2130

SSI2130 thumbnail
Rev. 2.4 IPC 7351B 0.9mm Sound Semicondutor

Properties

SSI2130

Sound Semiconductor

Integrated Circuit

soundsemiconductor.com/downloads/ssi2130datasheet.pdf

U

parametric-v1

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