login
Universal OPAMP Board for SMD SOT23-5 Package
- Rajkumar Sharma
- 530 Views
- easy
- Tested
- SKU: EL112519
- Quote Now
- 0 Likes
This is easy to build and very useful project for hobbyists and students to learn and create OPAMP-based projects. The project accommodates a single OPAMP in the SOT23-5 package. The project provides the user with multiple choices and extensive flexibility for different applications circuits and configurations. It provides the user with many combinations for various circuit types including active filters, differential amplifiers, and external frequency compensation circuits etc. A few examples of application circuits are given below. LM321 op-amp is the right choice to use for this board or any SOT23-5 OPAMP with the same pin configuration as LM321 can be used. It supports dual supply or single supply, Jumper J1 is provided to use this board with a single supply, D1 power LED.
Credits: All example schematics are from Analog Devices application notes.
Features
- Single or Dual Supply User-defined (Jumper)
- 4 Pin Male Header Connector for inputs
- 3 Pin Male Header for Supply input (Single or Dual)
- Jumper J1 Close for single Supply, Open for Dual Supply
- LED D1 Power LED
- Any SOT23-5 Op-Amp Can be used Pin configuration – LM321
- PCB Dimensions 37.31 x 23.50 mm
Similar Universal OPAMP boards
- Universal Op-Amp Board for SMD SOIC-8 Package
- Universal Op-Amp Board for DIP-8 Package
- Universal OPAMP Board for SMD MSOP8 Package
Schematic
Example Application
Parts List
| NO. | QNTY | REF. | DESC |
|---|---|---|---|
| 1 | 1 | CN1 | 4 PIN MALE HEADER PITCH 2.54MM |
| 2 | 1 | CN2 | 2 PIN MALE HEADER PITCH 2.54MM |
| 3 | 1 | CN3 | 3 PIN MALE HEADER PITCH 2.54MM |
| 4 | 26 | R1,C1,R2,C2,R3,C3 | USER DEFINED |
| R4,C4,C5,R6,C6,R7 | USER DEFINED | ||
| R8,C8,R9,R10,R11,R12 | USER DEFINED | ||
| R13,C13,R14,R15,R16,R18 | USER DEFINED | ||
| R5,C7,C14,R19 | USER DEFINED | ||
| 5 | 2 | C9,C11 | CAPACITOR SMD SIZE 1206 |
| 6 | 2 | C10,C12 | CAPACITOR SMD SIZE 0805 |
| 7 | 1 | D1 | LED RED SMD SIZE 0805 |
| 8 | 1 | J1 | PCB SOLDER JUMPER |
| 9 | 1 | R17 | ALL RESISTORS SIZE 0805 |
| 10 | 1 | U1 | OP-AMP SOT23-5 (LM321) |
| ALL RESISTORS | SMD SIZE 0805 | OPAMP DIGIKEY# | LM321MFX/NOPBCT-ND |
Example Application Parts List
| NO. | QNTY. | REF. | DESC. | MANUFACTURER | SUPPLIER | SUPPLIER PART NO |
|---|---|---|---|---|---|---|
| 1 | 1 | CN2 | 2 PIN MALE HEADER PITCH 2.54MM | WURTH | DIGIKEY | 732-5315-ND |
| 2 | 1 | CN3 | 3 PIN MALE HEADER PITCH 2.54MM | WURTH | DIGIKEY | 732-5316-ND |
| 3 | 1 | C6 | 1K PF /50V SMD SIZE 0805 | MURATA/YAGEO | ||
| 4 | 1 | C9 | 10uF/25V SMD SIZE 1206 | MURATA/YAGEO | ||
| 5 | 1 | C10 | 0.1uF/50V SMD SIZE 0805 | MURATA/YAGEO | ||
| 6 | 1 | D1 | LED RED SMD SIZE 0805 | OSRAM | DIGIKEY | 475-1278-1-ND |
| 7 | 1 | J1 | CLOSED(PCB JUMPER) | PCB SOLDER JUMPER | ||
| 8 | 4 | R1,R3,R7,R16 | 100K 5% SMD SIZE 0805 | MURATA/YAGEO | ||
| 9 | 2 | R8,R9 | 0E SMD SIZE 0805 | MURATA/YAGEO | ||
| 10 | 1 | R17 | 1K 5% SMD SIZE 0805 | MURATA/YAGEO | ||
| 11 | 1 | U1 | LM321 | TI | DIGIKEY | LM321MFX/NOPBCT-ND |
Example OPAMP Circuits
Gerber View
Photos
Video
LM321 Datasheet
PCB
