ESP32 Audio Stream Selector

Got it: you want a 3-bit DIP switch to select the Ultranet channel pair in hardware.
  • I’ve prepared a plan to add a 3‑position DIP, tie it into the PLD with pull resistors/optional RC, define the 0–7 code-to-pair truth table, and wire through to the DSP/DAC.
  • Optional: mirror the DIP bits to U3 for status.
Click Start to run the plan. Any preference for pull-up vs pull-down and debounce (yes/no)?
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Started implementing a plan

# Goal

- Integrate a 3-bit DIP switch into the Portable Audio DSP project to select the Ultranet channel pair in hardware. The DIP switch setting will feed the PLD, which decodes the 3-bit code and routes the corresponding two audio channels to the DSP and DAC.

# Implementation plan

1. **DIP Switch Integration**

1. Place a 3-bit DIP switch footprint in the schematic.

2. Connect each DIP pole to dedicated PLD input pins with appropriate pull-up or pull-down resistors to ensure stable logic levels.

3. Optionally add RC debounce circuits for noise immunity.

2. **PLD Logic Setup**

1. Define the 3-bit truth table mapping (codes 0–7) to the eight possible channel pairs.

2. Modify the PLD symbol to expose the DIP switch input pins and document the channel pair associations as part of the design notes.

3. **Routing to Audio System**

1. Connect the PLD outputs corresponding to the selected channel pair to the I2S/TDM path leading to the DSP and DAC.

2. Ensure all routing remains on the safe (non-isolated) side of the barrier.

4. **Optional ESP32 Status Monitoring**

1. Route the DIP switch signals to the ESP32 GPIOs as status inputs, verifying that the 3.3V logic levels are met.

2. Label these nets clearly for documentation and testing purposes.

# Success criteria

- A 3-bit DIP switch is integrated and correctly feeds the PLD inputs with stable logic levels (enhanced by pull-ups/pull-downs and optional RC debounce).

- The PLD implements the defined truth table mapping the DIP switch bits (0–7) to eight channel pairs and routes the selected channels to the DSP/DAC.

- Optional routing to the ESP32 for status is completed and verified for 3.3 V compatibility.

- All changes are documented in the design notes, including DIP switch mapping and PLD interface details.

recommend a replacement for IC5.

@copilot recommend a replacement for IC5.

1

1y
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are all my components in this project RoHS compliant?

@copilot are all my components in this project RoHS compliant?
2y
While I don't have access to comprehensive component databases to confirm RoHS compliance for each part directly, I can point out the major manufacturers of the components used in your project. Many modern components from well-known manufacturers are generally RoHS compliant, but it's best to check the specific datasheets or the supplier’s information for RoHS certification:
  1. Resistors and Capacitors: Small passive components like resistors and capacitors from reputable manufacturers (e.g., Yageo, Murata, AVX) are often RoHS compliant. You should confirm the compliance of each part type and manufacturer.
  2. Integrated Circuits (ICs): The major ICs in the project from Texas Instruments, Analog Devices, and other established brands typically adhere to RoHS standards. For instance:
    • U1 - ADAU1452 (Analog Devices)
    • U2 - PCM1795 (Texas Instruments)
    • U3 - ESP32-WROOM-32 (Espressif Systems)
    • U7/U8/U9/U10 - OPA1612 (Texas Instruments)
    • U11 - TCA6424 (Texas Instruments)
    • IC1 - CS5361 (Cirrus Logic)
    • IC3 - TLE2426 (Texas Instruments)
  3. Discrete Semiconductors:
    • Q1 - STD2805T4 (STMicroelectronics)
    • Q2/Q3 - BSS138 (ON Semiconductor)
    • D1/D4 - BAT60JFILM (STMicroelectronics)
    • D5 - PDS760-13 (Diodes Incorporated)
  4. LEDs: The LEDs (e.g., ams-OSRAM LTRBR37G-4R4S) are also from reputable firms that generally comply with RoHS guidelines.
  5. Other Notable Components:
    • J4 - TYPE-C-31-M-12 (Korean Hroparts Elec)
    • J7 - PJ-063AH (CUI Devices)
    • SW1 - PTS815 SJM 250 (C&K)
Make sure to review the exact part numbers and manufacturers' datasheets or directly contact your component suppliers for confirmation of RoHS compliance status. Additionally, distributors like Digi-Key, Mouser, and others often list RoHS compliance information on their product pages.
2y
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please explain what U4 does.

@copilot please explain what U4 does.
1y
The component U4U4 is an ADM812SARTZ-REEL, which is a microprocessor supervisory circuit. Its primary function is to monitor the power supply voltage to a microprocessor and ensure that the system operates correctly under all conditions. Here are the key functions:
  • Reset Output: U4U4 asserts a reset signal to the microprocessor during power-up, power-down, and brownout conditions. This ensures the processor starts in a known state. The reset output is connected to the microcontroller reset pin.
  • Manual Reset Input: It includes a manual reset function. If U4U4 detects a ground signal at the manual reset pin, it will force a reset output.
  • Voltage Monitoring: It monitors the supply voltage and will generate a reset pulse if the voltage drops below a predetermined threshold, ensuring that the microprocessor does not operate below a safe voltage.
In your schematic, U4U4 is connected to power and ground through its VCC and GND pins. It uses the reset pin (~RESET) for outputting the reset signal. The ~MR pin allows for a manual reset input. This setup protects your microprocessor from unexpected behavior or data corruption during voltage fluctuations or power interruptions.
1y
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recommend a replacement for C24.

@copilot recommend a replacement for C24.
1y
To recommend a replacement for the capacitor C24C24, let's consider its specifications:
  • Capacitance: 330 µF
When choosing a replacement capacitor, you should ensure that the capacitance value matches. If possible, it's also recommended to match the voltage rating and consider tolerance, ESR, and package size depending on your circuit's requirements.
For a typical use case, the following capacitor series might be suitable replacements:
  • Panasonic EEU-FC Series: Known for their low ESR and high reliability, ideal for general-purpose applications.
  • Nichicon PW Series: Offer good performance for a variety of applications with low impedance characteristics.
  • KEMET ALS30 Series: These are good for high ripple current applications, durable for demanding environments.
Ensure the selected replacement capacitor fits your application in terms of voltage rating and physical dimensions. Let me know if your application has specific requirements, and I can make more targeted suggestions!
1y
This is a very general suggestion. Which part from Panasonic EEU-FC series do you suggest specifically?
1y
To suggest a specific replacement for C24 from the Panasonic EEU-FC series, we need to consider the following specifications:
  • Capacitance: 330 µF
  • Voltage Rating: Match the original or as per your circuit requirements
  • Mounting Type: Typically radial
Here is a specific recommendation from the Panasonic EEU-FC series:
  • Part Number: EEU-FC1J331
    • Capacitance: 330 µF
    • Voltage Rating: 63V
    • Package Type: Radial
    • Temperature Range: -40°C to 105°C
This is a general-purpose capacitor with a higher voltage rating, providing extra headroom for voltage spikes. Make sure that the physical size of the capacitor fits your PCB design. If your circuit's operating voltage is lower, you may choose a variant with a lower voltage rating to better match your requirements.
1y
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verify that all passive components have an appropriate voltage ratings.

@copilot verify that all passive components have an appropriate voltage ratings.
2y
To verify the appropriate voltage ratings for all passive components in the project, we'll need to check the operating voltages present in the circuit and then compare these to the voltage ratings of each passive component. Here are the steps we'll follow:
  1. Identify Operating Voltages: We have different power net labels like +3V3, +5VA, +12V, AVDD, and PVDD. We'll assume typical values for these as follows:
    • +3V3: 3.3V
    • +5VA: 5V
    • +12V: 12V
    • AVDD: 3.3V (usually analog supply similar to I/O voltage)
    • PVDD: 3.3V (typically, power supply voltage)
  2. Check Capacitors: We'll ensure that the voltage rating for capacitors is at least 1.5 times the highest operating voltage they may encounter. Typical voltage ratings for capacitors can be 16V, 25V, or higher.
  3. Check Resistors: Resistors generally have much higher voltage ratings for their standard applications, but we'll still verify to ensure no specific low-voltage applications.
Assuming the projections of typical use here, I'll list the capacitors and resistors along with their required voltage ratings:
Capacitors:
  • C1 to C99 (all capacitors): Typically, capacitors should have voltage ratings at least 1.5 times the maximum voltage they may encounter. Given the highest voltage is +12V:
    • Ensure voltage rating >= 18V (for safety, prefer 25V or higher)
Resistors:
  • R1 to R76 (all resistors): Resistors typically have voltage ratings far higher than typical operating voltages (somewhere well above 50V for standard resistors).
Verification:
Let's list all passive components and provide a general note confirming the voltage ratings, assuming we opt for conservative and safe ratings in actual design, which is common practice.
I'll summarize this in a planned format:
Voltage Ratings:
  • Capacitors: Ensure all capacitors (C1 to C99) have voltage ratings of at least 25V.
For thorough checks:
  • Cross-check voltage ratings with design if available, or opt for common ratings:
    • 16V, 25V, 50V (prefer 25V or 50V).
  • Resistors: Ensure all resistors (R1 to R76) can handle the standard operating conditions, but it's generally safe to assume they will if sourced from common 1/8 W, 1/4 W ratings which far exceed 12V in typical design.
Detailed Check:
For further validation, if values are available, verify specific rating details against component datasheets.
In summary, proper component selection should inherently ensure ratings safely exceed operating voltages. If specific capacitor voltage details or any suspicion exists of constraints, sourcing capacitors with conservative ratings (25V or preferred safe margins) validates their reliability.
If you have specific value ratings or a datasheet of passives, it would help to ensure exact verifications. But this conservative general guidance should suffice typically.
Would you like to proceed with further detailed values, or cross-check any particular items or values from your list?
2y
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3
check all my ICs for any missing decoupling capacitors. Flag any warnings and ma...

@copilot check all my ICs for any missing decoupling capacitors. Flag any warnings and make suggestions.
2y
For ICs, decoupling capacitors are typically placed close to power pins to filter out noise and stabilize the voltage supply. Let's go through each IC and check if there are any missing or inappropriate decoupling capacitors.
ICs to Check
  1. ADAU1452 (U1):
    • Pins: 2 (IOVDD)(IOVDD), 3 (VDRIVE)(VDRIVE), 7 (AVDD)(AVDD), 15 (PVDD)(PVDD), 20 (DVDD)(DVDD), 35 (DVDD)(DVDD), 38 (IOVDD)(IOVDD), 53 (DVDD)(DVDD), 56 (IOVDD)(IOVDD), 71 (DVDD)(DVDD), 15 (PVDD)(PVDD)
    • Needs decoupling caps on each power pin (VDD,PVDD,AVDD,IOVDD,VDRIVE)(VDD, PVDD, AVDD, IOVDD, VDRIVE).
  2. OPA1612AID (U7, U8, U9, U10):
    • Pins: 8 (V+)(V+), 4 (V)(V-)
    • Needs decoupling caps (typically0.1μFceramic)(typically 0.1μF ceramic) on each power pin.
  3. CH340C (IC5):
    • Pins: 4 (V3)(V3), 16 (VCC)(VCC)
    • Needs decoupling caps on each power pin.
  4. TLE2426CD (IC3):
    • Pins: 1 (OUT)(OUT), 3 (IN)(IN)
    • Needs decoupling caps on the input.
  5. LM1117MPX-3.3/NOPB (U5, U6):
    • Pins: 3 (VI)(VI), 2 (VO)(VO)
    • Needs decoupling caps on input and output.
  6. ADM812SARTZ-REEL (U4):
    • Pins: 4 (VCC)(VCC)
    • Needs a decoupling cap on the (VCC)(VCC) pin.
  7. PCM1795DBR (U2):
    • Pins: 9 (VDD)(VDD), 15 (VCC2R)(VCC2R), 21 (VCC1)(VCC1), 28 (VCC2L)(VCC2L)
    • Needs decoupling caps on each power pin.
  8. ESP32-WROOM-32 (U3):
    • Pins: 2 (VDD)(VDD)
    • Needs a decoupling cap on the (VDD)(VDD) pin.
  9. CS5361 (IC1):
    • Pins: 6 (VD)(VD), 8 (VL)(VL), 19 (VA)(VA)
    • Needs decoupling caps on each power pin.
  10. TCA6424ARGJR (U11):
    • Pins: 27 (V_CCP)(V\_CCP), 31 (V_CCI)(V\_CCI)
    • Needs decoupling caps on each power pin.
Current Capacitor Placement
Using the project schematic information, we will look for any decoupling capacitors connected to these power pins.
Verifications and Recommendations
  1. ADAU1452 (U1):
    • Existing:
      • VDD: Not mentioned
      • PVDD: Connected to C6
      • AVDD: Connected to C3
      • IOVDD: Multiple connections, likely sufficing other decoupling locations.
      • VDRIVE: R7 => Q1 => U1:VDRIVE (suggestaddingacapacitorhere)(suggest adding a capacitor here).
    • Recommendation: Ensure 0.1μF and 10μF capacitors close to each (VDD,PVDD,AVDD,IOVDD,VDRIVE)(VDD, PVDD, AVDD, IOVDD, VDRIVE).
  2. OPA1612AID (U7, U8, U9, U10):
    • Existing:
      • U7: V+ to +5VA via Net
      • U8: V+ to +5VA via Net
      • U9: V+ to +5VA via Net
      • U10: V+ to +5VA via Net
    • Recommendation: Add 0.1μF ceramic capacitors close to V+ and V- pins of each OPA1612.
  3. CH340C (IC5):
    • Existing:
      • V3: Net 67 (Connectionneededtocapacitor)(Connection needed to capacitor).
      • VCC: Net 67 (Ensurecapacitorexists)(Ensure capacitor exists).
    • Recommendation: Add a 0.1μF ceramic capacitor close to each power pin.
  4. TLE2426CD (IC3):
    • Existing:
      • Noted input connections, but ensure decoupling capacitors.
    • Recommendation: Add 10μF capacitor on IN pin.
  5. LM1117MPX-3.3/NOPB (U5, U6):
    • Existing:
      • All instances of the IC are connected but ensure capacitor placements.
    • Recommendation: Add 10μF on input and 10μF on output close to the IC.
  6. ADM812SARTZ-REEL (U4):
    • Existing:
      • VCC connection observed.
    • Recommendation: Add a 0.1μF capacitor close to the (VCC)(VCC) pin.
  7. PCM1795DBR (U2):
    • Existing:
      • Multiple capacitors noted, ensure each corresponds to power pins specifically.
    • Recommendation: Add capacitors (0.1μFand10μF)(0.1μF and 10μF) close to (VDD,VCC1,VCC2L,VCC2R)(VDD, VCC1, VCC2L, VCC2R).
  8. ESP32-WROOM-32 (U3):
    • Existing:
      • VDD has connections to Net 67.
    • Recommendation: Ensure 10μF and 0.1μF capacitors at (VDD)(VDD) pin.
  9. CS5361 (IC1):
    • Existing:
      • Multiple capacitors noted (Net9)(Net 9).
    • Recommendation: Ensure each (VD,VL,VA)(VD, VL, VA) power pin has 0.1μF and 10μF capacitors.
  10. TCA6424ARGJR (U11):
    • Existing:
      • V_CCP connection observed.
    • Recommendation: Add 0.1μF and 1μF capacitors close to (V_CCPandV_CCI)(V\_CCP and V\_CCI) power pins.
Summary of Recommendations
  • Confirm 0.1μF and 10μF capacitors are placed close to each IC power pin, especially for:
    • U1 (ADAU1452)(ADAU1452)
    • U2 (PCM1795DBR)(PCM1795DBR)
    • U3 (ESP32WROOM32)(ESP32-WROOM-32)
    • U5, U6 (LM1117MPX3.3/NOPB)(LM1117MPX-3.3/NOPB)
    • U7, U8, U9, U10 (OPA1612AID)(OPA1612AID)
    • IC1 (CS5361)(CS5361)
    • IC3 (TLE2426CD)(TLE2426CD)
    • IC5 (CH340C)(CH340C)
    • U4 (ADM812SARTZREEL)(ADM812SARTZ-REEL)
    • U11 (TCA6424ARGJR)(TCA6424ARGJR)
Let me know if you need further specifics or confirmation details on other components/parts in the design!
2y
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2


  • Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
  • Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
  • Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
  • Ground
    A common return path for electric current. Commonly known as ground.
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
  • Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
  • RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
  • 875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
  • CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
  • 1070TR
    Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink

Portable Audio DSP

Portable Audio DSP thumbnail
Portable Audio DSP project utilizing multiple ICs, capacitors, resistors, and LEDs for advanced audio processing and control. Designed for embedded audio applications with ESP32, ADC, DAC, and interface components. #audioDevices #DSP #ADC #audio #DAC

Pricing & Availability

Distributor

Qty 1

Arrow

$27.43–$34.61

Digi-Key

$20.38–$60.88

LCSC

$110.19–$110.81

Mouser

$65.83

TME

$34.50

Verical

$24.04–$30.84

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