Ultrasound Device Design Guide

flux

0:00

Diagram



  
    
  
  
    
  





























LiPo and USB input
Charger and power path
3V3 plus15 minus15 HV rails
STM32 control and safety
3 MHz pulser
TX RX protection
3 MHz piezo
Receive VGA and gain
Envelope and ADC conditioning
Temp current battery alerts
12 days

updated specification and architecture documentation

0:14

12 days

planned missing protection and indicator additions

1:27

Searching for components.

Searching library for: "Select a fast small signal switching diode available in Flux library for ultrasound transmit receive protection and envelope detection paths. Requirements: low capacitance preferred, fast recovery, compact SMD package, suitable for analog front end clamping around a 3 MHz signal path and diode detector use."

Searching library for: "Select a compact single wire digital temperature sensor available in Flux library suitable for DS18B20-compatible style thermal monitoring in a wearable electronics design. Requirements: 3.3 V operation, simple interface to STM32 GPIO, SMD package preferred."

Creating search plan for: "Select a compact visible status LED and a compact buzzer or magnetic transducer component available in Flux library for a wearable medical style device. Requirements: SMD package, low current operation, suitable for 3.3 V control with simple driver. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"

Started: adding missing protection and indicator components

Searching: "Compact single-wire (1-Wire) digital temperature sensor compatible with DS18B20, 3.3 V operation, SMD package preferred, simple GPIO interface for STM32, suitable for wearable electronics (small footprint, low profile)"

Searching: "Select a compact single wire digital temperature sensor available in Flux library suitable for DS18B20-compatible style thermal monitoring in a wearable electronics design. Requirements: 3.3 V operation, simple interface to STM32 GPIO, SMD package preferred. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"

Searching: "compact SMD buzzer or magnetic transducer (or piezo sounder), low current, low-profile, suitable for 3.3 V control with a simple driver/transistor, wearable medical device"

Searching: "Select a compact visible status LED and a compact buzzer or magnetic transducer component available in Flux library for a wearable medical style device. Requirements: SMD package, low current operation, suitable for 3.3 V control with simple driver. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"

Searching: "Small-signal switching diode for analog front-end clamping and envelope detection. Prefer very low junction capacitance (<~2pF if possible), fast recovery/switching, compact SMD (SOD-523, SOD-323, SOD-123, SOT-23), suitable for ~3 MHz signal path and diode detector use"

Searching: "Select a fast small signal switching diode available in Flux library for ultrasound transmit receive protection and envelope detection paths. Requirements: low capacitance preferred, fast recovery, compact SMD package, suitable for analog front end clamping around a 3 MHz signal path and diode detector use. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"

12 days

Added 27 components

0:10

Added 1x LT8330IS6#TRMPBF as IC2 (Pins: FBX, SW, GND, INTVCC, VIN, EN/UVLO)

Added 1x DMG9926UDM as Q1 (Pins: S2, D1, S1/D2::2, G1, G2, S1/D2::5)

Added 4x CDSU101A-HF as D14, D15, D16, D17 (Pins: K, A)

Added 1x DS18B20U as U9 (Pins: NC::2, NC::3, NC::6, VDD, NC::7, DQ, NC::5, GND)

Added 2x HSMD-C190 as LED1, LED2 (Pins: A, K)

Added 1x CMI-9653S-SMT-TR as LS1 (Pins: -, +)

Added 1x 2N7002K as Q2 (Pins: D, S, G)

Added 8x Generic Resistor as R7, R8, R9, R10, R11, R12, R13, R14 (Pins: P2, P1)

Added 8x Generic Capacitor as C17, C18, C19, C20, C21, C22, C23, C24 (Pins: P1, P2)

12 days

added missing protection and indicator components

0:32

Started: wiring newly added power and safety circuits

12 days

Working...

12d 14:4:12

Analyzing the schematic.

12 days

Updating connections...

12d 14:3:42

12 days

Stopped due to a problem. Please try again.

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J1
C15
Capacitance
10uF
C16
Capacitance
10uF
C14
Capacitance
1nF
U2 PA8 - J3 1
U4 V+ - J2 1
U2 PA9 - J3 2
J1 VBUS_B - U1 IN
J1 CC1 - R1 P1
J1 CC2 - R2 P1
J1 VBUS_B - U1 IN
U8 RT - C14 P1
J1 SHIELD - U1 GND
U5 GND - U6 GND
U5 GND - U6 GND
J3
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    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
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    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
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    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
    jharwinbarrozo
    1.5M
  • Generic Inductor
    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
    jharwinbarrozo
    15.8k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
    jharwinbarrozo
    1.1M

Wearable Ultrasound Collar

Wearable Ultrasound Collar thumbnail
Dual-mode wearable ultrasound collar schematic with A-mode sensing, LIPUS therapy, 3 MHz piezo transducer, power management, control, receive chain, ADC, and safety interlocks.

Properties

Single-cell Li-ion with USB-C 5V input

Dual-mode wearable ultrasound collar with A-mode sensing and LIPUS therapy using a single-element 3 MHz 10 mm transducer and MCU-controlled transmit/receive interlock

USB-C power, I2C control, SWD debug

Wearable Ultrasound

Pricing & Availability

Distributor

Qty 1

Arrow

$101.46–$103.51

Digi-Key

$100.20–$132.36

LCSC

$64.05–$75.42

Mouser

$130.84–$131.11

TME

$12.06

Verical

$95.69–$112.64

Controls