# 40kHz_Ultrasonic_RX_Frontend_1CH ## Description Single-channel analog front-end for a 40 kHz air-coupled ultrasonic receiver using a 5 V single supply, buffered 2.5 V mid-reference, protection, gain, band-pass shaping, and ADC-ready output centered at VREF. ## Project Details - **Owner:** zyp520 - **Created:** 5/22/2026 - **Last Updated:** 5/25/2026 - **Visibility:** Public ## Key Components ### D_CLAMP_H — [BAT54H,115](https://www.flux.ai/jecstronic/bat54hc115~nbk.md) - Role Details: Upper clamp from RX_PROT to +5V - Manufacturer Part Number: BAT54H,115 - Role: Clamping - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Nexperia USA Inc. - Part Type: Diode - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/BAT54H.pdf **Pins:** - A [pin 2] - K [pin 1] ### D_CLAMP_L — [BAT54H,115](https://www.flux.ai/jecstronic/bat54hc115~nbk.md) - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/BAT54H.pdf - Part Type: Diode - Role Details: Lower clamp from AGND to RX_PROT - Manufacturer Name: Nexperia USA Inc. - Role: Clamping - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BAT54H,115 **Pins:** - A [pin 2] - K [pin 1] ### J_OUT — [Connector 01x02 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x02-horizontal~jah.md) - Part Type: Connector - Role: Coupling - Manufacturer Part Number: PZ254R-11-02P - Role Details: Biased analog output connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J_PWR — [Connector 01x02 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x02-horizontal~jah.md) - Manufacturer Part Number: PZ254R-11-02P - Role Details: +5V and AGND power entry - Role: Power Filtering - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J_RX — [Connector 01x02 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x02-horizontal~jah.md) - Role: Coupling - Manufacturer Part Number: PZ254R-11-02P - Part Type: Connector - Role Details: 40 kHz ultrasonic receiver input **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### TP_AMP1 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Role Details: Probe AMP1_OUT - Testpoint Size: 0.5 - Role: Sensing (Shunt) **Pins:** - P1 ### TP_BP — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 - Role: Sensing (Shunt) - Role Details: Probe BP_OUT **Pins:** - P1 ### TP_OUT — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 - Role Details: Probe RX_OUT - Role: Sensing (Shunt) **Pins:** - P1 ### TP_PROT — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 - Role Details: Probe RX_PROT - Role: Sensing (Shunt) **Pins:** - P1 ### TP_RX_RAW — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Role Details: Probe RX_RAW - Role: Sensing (Shunt) - Testpoint Size: 0.5 **Pins:** - P1 ### TP_VREF — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Role Details: Probe VREF - Testpoint Size: 0.5 - Role: Sensing (Shunt) **Pins:** - P1 ### U1 — [TLV9062IDGKT](https://www.flux.ai/adrian95/tlv9062idgkt~o9n.md) - Role: Amplification - Manufacturer Name: Texas Instruments - Part Type: Operational Amplifier (OP-AMP) - Datasheet URL: https://www.ti.com/lit/ds/symlink/tlv9062.pdf - Manufacturer Part Number: TLV9062IDGKT - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: U1A first amplifier, U1B second amplifier **Pins:** - IN1- [pin 2] - IN1+ [pin 3] - IN2- [pin 6] - IN2+ [pin 5] - OUT1 [pin 1] - OUT2 [pin 7] - V- [pin 4] - V+ [pin 8] ### U2 — [TLV9062IDGKT](https://www.flux.ai/adrian95/tlv9062idgkt~o9n.md) - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/tlv9062.pdf - Part Type: Operational Amplifier (OP-AMP) - Manufacturer Part Number: TLV9062IDGKT - License: https://creativecommons.org/licenses/by/4.0/ - Role: Voltage Reference - Role Details: U2A VREF buffer, U2B unused follower tied to VREF **Pins:** - IN1- [pin 2] - IN1+ [pin 3] - IN2- [pin 6] - IN2+ [pin 5] - OUT1 [pin 1] - OUT2 [pin 7] - V- [pin 4] - V+ [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/zyp520/40khzultrasonicrxfrontend1ch~nx](https://www.flux.ai/zyp520/40khzultrasonicrxfrontend1ch~nx).* --- *Generated from [https://www.flux.ai/zyp520/40khzultrasonicrxfrontend1ch~nx](https://www.flux.ai/zyp520/40khzultrasonicrxfrontend1ch~nx)*