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Std EditionDemonstrating the EasyEDA LM386 spice subckt model

License: Public Domain

Published Time:2015-06-08 23:14:08
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Description

A comparison between the EasyEDA LM386 improved spice model and the "NO-FRILLS LM386 MODEL" by Dave Dilatush 5/30/95.

The EasyEDA LM386EE/NJM386EE spice subcircuit model is a new model developed for EasyEDA by signality.co.uk

The LM386EE subcircuit is featured in the Tesseract Guitar Practice Amplifier simulation files:

https://easyeda.com/example/Tesseract_Guitar_Practice_Amp_simulation_files-H0ca8IFDB

To copy the subckt netlist, open the schematic in the editor and do:

File > Export Netlist > LTspice for This Sheet...

or simply download a copy of the LM386EE.sub.txt attachment.

The subckt is based on the schematic shown in the NJM386 datasheet:

https://www.nisshinbo-microdevices.co.jp/en/pdf/old_pdf/NJM386_E.pdf (or: https://cdn.datasheetspdf.com/pdf-down/N/J/M/NJM386_NewJapanRadio.pdf)

Specifications are based on the above and:

http://www.ti.com/lit/ds/symlink/lm386.pdf

The EasyEDA spice subcircuit offers improved modelling of output voltage self-centring, typical quiescent and input bias currents and unloaded bandwidth.

Output swing is optimistic with < 8 Ohm load resistances although the reason for this is unclear.

To help improve the model in this area, if anyone is willing to share scope traces of the LM386 output voltage driving into clipping with loads of between 4 - 16 Ohms, please contact:

support@easyeda.com

Documents

Demonstrating the EasyEDA LM386 spice subckt model

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A high gain bandpass filter

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ID Designator Footprint Quantity
1 C1 1206 1
2 C2 CP_8X13MM 1
3 C3,C1 CP_8X13MM 2
4 C4,C5 1206 2
5 L1 INDUCTOR-1206 1
6 R1 R3 1
7 R2 R3 1
8 RFB R3 1
9 RLOAD R3 1
10 RV1 R3 1
11 U1 DIP 1
12 V1 2P-5.0 1
13 V2 2P-5.0 1
14 C2 1206 1
15 C3 CP_8X13MM 1
16 R1 R3 1
17 R2 R3 1
18 R3 R3 1
19 RSPKR 1X02 1
20 RVOL RES-ADJ_3386P 1
21 V1 2P-5.0 1
22 V_AMMETER 2P-5.0 1

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