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LN4990MM-G

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by adom

NATLINEAR Audio Amplifiers, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LN4990MM-G

NATLINEAR · Audio Amplifiers · MSOP-8

LN4990MM-G from NATLINEAR, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 SHUTDOWN input Shutdown control input that puts the amplifier in a low-power state with shutdown current of 0.1µA typ. (2µA max), with high or low shutdown level user-selectable.
2 BYPASS passive Bypass pin for the internal common-mode reference, used by the click-and-pop suppression circuitry.
3 +IN input Non-inverting input of the differential audio input.
4 -IN input Inverting input of the differential audio input, where an external resistor adjusts the gain.
5 VO1 output Bridge-tied-load amplifier output 1, driving the speaker with no output coupling capacitor needed.
6 VDD power_in Positive supply pin, operating range 2.2V to 5.5V (absolute maximum 6.0V).
7 GND power_in Ground pin.
8 VO2 output Bridge-tied-load amplifier output 2, driving the speaker with no output coupling capacitor needed.

Key specifications

Parameter Value
Manufacturer NATLINEAR
Package MSOP-8
Category Amplifiers/Comparators
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Quiescent current, no load IDD 3 7 mA VDD=5V; VIN = 0V, Io = 0A, No Load 4
Quiescent current, 8Ω load IDD 4 10 mA VDD=5V; VIN = 0V, Io = 0A, 8Ω Load 4
Shutdown current ISD 0.1 2 μA VDD=5V; V 0V SHUTDOWN 4
Output offset voltage VOS 7 50 mV VDD=5V 4
Output resistance to GND ROUT-GND 7 8.5 9.7 kΩ VDD=5V 4
Output power, 8Ω PO 0.9 1.25 W VDD=5V; THD = 1% (max); f = 1 kHz 4
Startup time TWU 170 220 ms VDD=5V 4
Thermal shutdown temperature TSD 150 170 190 ℃ VDD=5V 4
Power supply rejection ratio, f=217Hz PSRR 55 60 dB VDD=5V; Vripple = 200mV sine p-p f=217Hz 4
Quiescent current, no load IDD 2 7 mA VDD=3V; VIN = 0V, Io = 0A, No Load 5
Quiescent current, 8Ω load IDD 3 9 mA VDD=3V; VIN = 0V, Io = 0A, 8Ω Load 5
Shutdown current ISD 0.1 2 μA VDD=3V; V 0V SHUTDOWN 5
Output offset voltage VOS 7 50 mV VDD=3V 5
Output resistance to GND ROUT-GND 7 8.5 9.7 kΩ VDD=3V 5
Startup time TWU 100 150 ms VDD=3V 5
Thermal shutdown temperature TSD 150 170 190 ℃ VDD=3V 5
Power supply rejection ratio, f=217Hz PSRR 45 62 dB VDD=3V; Vripple = 200mV sine p-p, f=217Hz 5
Output power, 8Ω PO 0.3 W VDD=2.6V; THD = 1% (max); f = 1 kHz; 8Ω Load 5
Output power, 4Ω PO 0.4 W VDD=2.6V; THD = 1% (max); f = 1 kHz; 4Ω Load 5
Operating ambient temperature TA -40 85 ℃ TMIN ≤ TA ≤ TMAX 1
Operating supply voltage VDD 2.2 5.5 V 1
Supply voltage (absolute maximum) VDD -0.3 6 V 3
Input voltage (absolute maximum) VIN -0.3 V Upper limit printed as VDD+0.3 3
Operating temperature (absolute maximum) Topr -40 85 ℃ 3
Storage temperature Tstg -65 150 ℃ 3
ESD parameter 4000 V 3

CAD (KiCad official)

  • Symbol: LN4990MM-G
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: ln4990mm-g-etched.step / ln4990mm-g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ln4990mm-g.step / ln4990mm-g.glb are the bare package body.

Provenance

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

  • Datasheet: NATLINEAR datasheet (9 pp, sha256 59790730bc814438, retrieved 2026-10-18, 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 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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