# Class AB Audio Amp ## Description Class AB Audio Amp with Aux and microphone inputs and adjustable volume control using potentiometers. ## Project Details - **Owner:** jonwdan - **Created:** 9/29/2023 - **Last Updated:** 10/20/2023 - **Visibility:** Public ## Key Components ### Aux — [3362H-1-104LF](https://www.flux.ai/vasyl/3362h-1-104lf~20n.md) - Manufacturer Name: Bourns Inc. - Manufacturer Part Number: 3362H-1-104LF - Part Type: Resistor - Resistance: 100kΩ - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/3362.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### D1 — [750mV Rectifier Diode](https://www.flux.ai/corynrobinson/750mv-rectifier-diode~6b.md) - Datasheet URL: https://fscdn.rohm.com/en/products/databook/datasheet/discrete/diode/fast_recovery/rfc02mm2s-e.pdf - Manufacturer Name: Rohm - Package or Case Code: D_SOD-123F - Forward Voltage: 0.75V - Part Type: Diode - Manufacturer Part Number: RFC02MM2STR - Current: 0.1A **Pins:** - A - K ### D2 — [750mV Rectifier Diode](https://www.flux.ai/corynrobinson/750mv-rectifier-diode~6b.md) - Manufacturer Name: Rohm - Datasheet URL: https://fscdn.rohm.com/en/products/databook/datasheet/discrete/diode/fast_recovery/rfc02mm2s-e.pdf - Package or Case Code: D_SOD-123F - Forward Voltage: 0.75V - Part Type: Diode - Manufacturer Part Number: RFC02MM2STR - Current: 0.1A **Pins:** - A - K ### J1 — [SJ-43514-SMT](https://www.flux.ai/vasy_skral/sj-43514-smt~rql.md) - Part Type: Connector - Manufacturer Name: CUI Devices - Datasheet URL: https://www.cuidevices.com/product/resource/digikeypdf/sj-4351x-smt.pdf - Manufacturer Part Number: SJ-43514-SMT-TR **Pins:** - Ring 1 [pin 3] - Ring 2 [pin 4] - Sleeve [pin 1] - Tip [pin 2] ### Mic — [3362H-1-104LF](https://www.flux.ai/vasyl/3362h-1-104lf~20n.md) - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/3362.pdf - Part Type: Resistor - Resistance: 100kΩ - Manufacturer Name: Bourns Inc. - Manufacturer Part Number: 3362H-1-104LF **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### MK1 — [CMA-4544PF-W_Microphone Symbol](https://www.flux.ai/adrian95/cma-4544pf-wmicrophone-symbol~kbd.md) - Manufacturer Name: CUI Devices - Part Type: Microphone - Datasheet URL: https://www.cuidevices.com/product/resource/cma-4544pf-w.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: CMA-4544PF-W **Pins:** - 1 [pin 1] - 2 [pin 2] ### Q1 — [BD235](https://www.flux.ai/jecstronic/bd235~gpz.md) - Manufacturer Name: STMicroelectronics - Part Type: Transistor - Manufacturer Part Number: BD235 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://octopart.com/datasheet/bd235-stmicroelectronics-354695 **Pins:** - B [pin 3] - C [pin 2] - E [pin 1] ### Q2 — [BD238](https://www.flux.ai/jecstronic/bd238~tg.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: onsemi - Manufacturer Part Number: BD238 - Datasheet URL: https://octopart.com/datasheet/bd238-multicomp-8046493 - Part Type: Transistor **Pins:** - B [pin 3] - C [pin 2] - E [pin 1] ### U1 — [TL072MJG](https://www.flux.ai/jecstronic/tl072mjg~4ri.md) - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https://www.ti.com/lit/gpn/tl072m - Part Type: Operational Amplifier (OP-AMP) - Manufacturer Part Number: TL072MJG - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1IN- [pin 2] - 1IN+ [pin 3] - 1OUT [pin 1] - 2IN- [pin 6] - 2IN+ [pin 5] - 2OUT [pin 7] - VCC- [pin 4] - VCC+ [pin 8] ### U2 — [TL072MJG](https://www.flux.ai/jecstronic/tl072mjg~4ri.md) - Part Type: Operational Amplifier (OP-AMP) - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TL072MJG - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https://www.ti.com/lit/gpn/tl072m **Pins:** - 1IN- [pin 2] - 1IN+ [pin 3] - 1OUT [pin 1] - 2IN- [pin 6] - 2IN+ [pin 5] - 2OUT [pin 7] - VCC- [pin 4] - VCC+ [pin 8] ### U3 — [TL072MJG](https://www.flux.ai/jecstronic/tl072mjg~4ri.md) - Part Type: Operational Amplifier (OP-AMP) - Manufacturer Part Number: TL072MJG - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https://www.ti.com/lit/gpn/tl072m **Pins:** - 1IN- [pin 2] - 1IN+ [pin 3] - 1OUT [pin 1] - 2IN- [pin 6] - 2IN+ [pin 5] - 2OUT [pin 7] - VCC- [pin 4] - VCC+ [pin 8] ### U4 — [TL072MJG](https://www.flux.ai/jecstronic/tl072mjg~4ri.md) - Manufacturer Part Number: TL072MJG - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Part Type: Operational Amplifier (OP-AMP) - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https://www.ti.com/lit/gpn/tl072m **Pins:** - 1IN- [pin 2] - 1IN+ [pin 3] - 1OUT [pin 1] - 2IN- [pin 6] - 2IN+ [pin 5] - 2OUT [pin 7] - VCC- [pin 4] - VCC+ [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jonwdan/class-ab-audio-amp~s1](https://www.flux.ai/jonwdan/class-ab-audio-amp~s1).* --- *Generated from [https://www.flux.ai/jonwdan/class-ab-audio-amp~s1](https://www.flux.ai/jonwdan/class-ab-audio-amp~s1)*