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Contents

README

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LM2907M-14

HGSEMI · V/F And F/V Converters · SOP-14

LM2907M-14 from HGSEMI, in a SOP-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 TACH+ input Input signal positive terminal; connected to non-inverting input of internal Schmitt trigger comparator.
2 CP1 output Charge pump output; capacitor charges at 180µA typical constant current to VCC/2 on each positive half-cycle, discharges at same rate on negative half-cycle.
3 CP2 output Charge pump current output equal to absolute value of CP1 capacitor current; resistor and capacitor in parallel filter current pulses to output voltage.
4 IN+ input Non-inverting input of high-gain operational amplifier.
5 EMIT power_in Emitter of output stage bipolar junction transistor; provides ground return path for open-collector output.
6 NC unconnected No connection.
7 NC unconnected No connection.
8 COL tri_state Collector of open-collector output transistor; sinks up to 50mA and supports voltage to VCE max 28V.
9 V+ power_in Positive power supply voltage; operating range 0 to 28V DC.
10 IN- input Inverting input of high-gain operational amplifier.
11 TACH- input Input signal negative terminal; connected to inverting input of internal Schmitt trigger comparator.
12 GND power_in Ground; negative power supply return.
13 NC unconnected No connection.
14 NC unconnected No connection.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOP-14
Category Data Acquisition
Pins 14

CAD (KiCad official)

  • Symbol: LM2907M-14
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOP-14 (KiCad packages3D, STEP)
  • 3D model files: lm2907m-14-etched.step / lm2907m-14-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2907m-14.step / lm2907m-14.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HGSEMI datasheet (14 pp, sha256 b58cd9af193db38d, retrieved 2026-09-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF