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MDZ12-2

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Shanghai Mingda Microelectronics Audio Interface ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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MDZ12-2

Shanghai Mingda Microelectronics · Audio Interface ICs · SOP-8

MDZ12-2 from Shanghai Mingda Microelectronics, in a SOP-8. 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 OUT output Drive signal output. Push-pull output for driving an external NPN transistor stage and buzzer. VoH >= 3.2 V at Io = 5 mA, VoL <= 0.4 V at Io = -5 mA (VDD = 3.6 V).
2 VDD power_in Positive supply. Operating range 1.5 V to 7 V (typical 3.6 V). A low-ESR ceramic decoupling capacitor between VDD and GND is required, and no series resistor should be placed between VDD and the supply.
3 F1 input Function-select input 1. Tie to VDD, to GND, or leave floating (high-Z) to choose the sound effect. F1 = VDD -> fire alarm; F1 = GND -> ambulance; F1 floating -> police car. Sink current typ. 40 uA when F1 = VDD.
4 NC unconnected No connection. Leave floating (悬空不接).
5 OSC0 passive Internal oscillator pin 1. Connect the external oscillation resistor R (typical 270 kOhm) between OSC0 and OSC1 to set the output tone frequency. Larger R lowers the output frequency.
6 OSC1 passive Internal oscillator pin 2. Connect the external oscillation resistor R (typical 270 kOhm) between OSC0 and OSC1 to set the output tone frequency.
7 F2 input Function-select input 2. Tie to VDD, to GND, or leave floating. F2 = VDD forces machine-gun sound regardless of F1; F2 = GND or floating enables the F1-selected sound. Sink current typ. 14 uA when F2 = VDD.
8 GND power_in Ground reference (Vss). Return for VDD and the OUT driver.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOP-8
Category Interface
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • MDZ12-2

CAD (KiCad official)

  • Symbol: MDZ12-2
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: mdz12-2-etched.step / mdz12-2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mdz12-2.step / mdz12-2.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Mingda Microelectronics datasheet (7 pp, sha256 effd3a8d7f3066cd, retrieved 2026-08-17, 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF