# Compact AD620 IA Module ## Description Compact AD620 instrumentation amplifier module with socketed input/output headers, adjustable gain, and adjustable reference/zero offset using trimmer potentiometers. ## Project Details - **Owner:** roscoeroggers5 - **Created:** 7/1/2026 - **Last Updated:** 7/1/2026 - **Visibility:** Public - **Copies:** 1 ## Key Components ### J1 — [Pin Header 01x04 2.54mm Vertical without Designators](https://www.flux.ai/markwuflux/pin-header-01x04-2p54mm-vertical-without-designators~qb.md) - Connector Pitch: 2.54mm - Part Type: Connector - Connector Gender: Unspecified - Role: Interconnect - Connector Positions: 4 - License: https://creativecommons.org/licenses/by/4.0/ - Connector Type: Headers and Wire Housings **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 1] - Pin_3 [pin 3] - Pin_4 [pin 4] ### J2 — [Pin Header 01x04 2.54mm Vertical without Designators](https://www.flux.ai/markwuflux/pin-header-01x04-2p54mm-vertical-without-designators~qb.md) - Connector Gender: Unspecified - License: https://creativecommons.org/licenses/by/4.0/ - Role: Interconnect - Part Type: Connector - Connector Positions: 4 - Connector Type: Headers and Wire Housings - Connector Pitch: 2.54mm **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 1] - Pin_3 [pin 3] - Pin_4 [pin 4] ### RV1 — [TC33X-2-103E](https://www.flux.ai/jecstronic/tc33x-2-103e~7n.md) - Role: Feedback - Manufacturer Part Number: TC33X-2-103E - Part Type: Potentiometer - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/TC33.pdf - Manufacturer Name: Bourns Inc. - Role Details: 10kΩ Bourns TC33 SMD top-adjust trimmer between AD620 RG pins with 100Ω series limit; expected gain range approximately 5.9 to 495 - License: https://creativecommons.org/licenses/by/4.0/ - Resistance: 10kΩ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### RV2 — [TC33X-2-103E](https://www.flux.ai/jecstronic/tc33x-2-103e~7n.md) - License: https://creativecommons.org/licenses/by/4.0/ - Resistance: 10kΩ - Manufacturer Name: Bourns Inc. - Role Details: 10kΩ Bourns TC33 SMD top-adjust trimmer generates adjustable AD620 REF/zero voltage - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/TC33.pdf - Part Type: Potentiometer - Manufacturer Part Number: TC33X-2-103E - Role: Voltage Reference **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### U1 — [AD620BRZ](https://www.flux.ai/jecstronic/ad620brz~xug.md) - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/AD620.pdf - Role Details: AD620 SOIC-8; gain set by impedance between pins 1 and 8; REF pin used for zero/offset adjustment - Part Type: Operational Amplifier (OP-AMP) - Manufacturer Part Number: AD620BRZ - Manufacturer Name: Analog Devices Inc. - Role: Amplification - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - -IN [pin 2] - -VS [pin 4] - +IN [pin 3] - +VS [pin 7] - OUTPUT [pin 6] - REF [pin 5] - RG [pin 8] - RG [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/roscoeroggers5/compact-ad620-ia-module~k0](https://www.flux.ai/roscoeroggers5/compact-ad620-ia-module~k0).* --- *Generated from [https://www.flux.ai/roscoeroggers5/compact-ad620-ia-module~k0](https://www.flux.ai/roscoeroggers5/compact-ad620-ia-module~k0)*