Understanding UAV in Mission-Critical Scenarios: Leveraging IoT for a Safer Future

We have witnessed an increase in natural disasters worldwide in recent months. Wildfires, earthquakes, storms, floods and droughts have left many people’s homes in ruins. These extreme natural events often have serious consequences in terms of economic losses, social chaos as well as environmental damage.

Nowadays, enhanced technologies offer innovative ways to address various problems around the world, especially in mission-critical situations. For example, unmanned aerial vehicles (UAVs), also known as drones, can effectively act as mobile sensors in the IoT environment, collecting data and relaying it back to the cloud app or other analytics services. As the drone industry has expanded over the last several years, many sectors has been adopting drones for work for security and emergency response.

UAV Applications in Critical Situation

Natural Disasters

Drones are able to explore and report on locations that may be inaccessible via other means, which has become the key during and after the disasters. To begin with, ordinary modes of transport are often not viable in such cases, and drones will come in handy to help prevent a worst-case scenario. They are able to easily fly over disaster sites and deliver medical supplies such as small aid packages. In addition, drones can also be used to help first responder teams to evaluate the situation of the incidents, such as wildfires and floods, locate injured people and therefore mitigate damage from these natural disasters.

Public Safety

Deploying UAVs in emergency situations enhances the work efficiency for law enforcement teams, helps to improve public safety, increase reliability and decrease response times. Currently drones are used by police forces in a number of applications, including but not limited to surveillance in large open areas, negotiating hostage situations and investigating bomb threats. Compared with helicopters, UAVs are innovative, cost-effective and readily available. More importantly, they enable police officers to handle potentially dangerous situations while protecting their own safety.

Remote Workplaces

The inspection and maintenance of industrial facilities often brings many challenges and health risks to the workers. When in-person inspection is needed, using drones instead of people to collect data can have a huge impact on personal safety. It eliminates the need for employees to be exposed to distanced or potentially dangerous situations, such as inspecting construction sites, boilers, mines, power grids, tunnels and so on. By using sensors and cameras, the drones collect data and transmit it to the inspector in real time. As a fast, safe and economical way, drone helps with the maintenance on infrastructure or device repairs instead of using human resources or heavy machinery.

Fibocom Wireless Solutions Empower Drones Industry

Drone technology, combined with robust connectivity solutions, is helping to building a safer future, the realization of which requires high-speed and stable wireless connectivity. Embedded in drones, Fibocom is able to offer wireless communication modules to accelerate the use of drone in mission-critical situations and to establish a smarter, safer society.

Take UAV inspection as an example. UAV inspections are mainly used for grid maintenance through drone cameras to access remote areas easily. With 5G’s high speed and network capacity, Fibocom’s 5G wireless modules enable the data transmission of high-definition (4K/8K) videos which require high bandwidth of over 100Mbps. These devices transmit a crystal-clear view of the maintenance area, making it easier to identify problems in emergency repair scenarios, reducing labor costs and grid downtime.

Fibocom’s 5G wireless communication modules are designed to offer eMBB (enhanced Mobile Broadband), URLLC (Ultra Reliable and Low Latency Communications), as well as mMTC (massive Machine Type Communications). Supporting 5G standalone network (SA) and non-standalone (NSA) network architectures, Fibocom 5G wireless module series supports the Sub-6GHz and mmwave bands, and is compatible with 5G NR, LTE and WCDMA standards. It eliminates customers’ investment concerns at the initial stage of 5G construction, responding to the commercial demand for rapid landing. Meanwhile, Fibocom 5G modules come with a rich set of interfaces including USB3.1 (3.0), USB2.0, PCIe3.0 (2.0), SPI, SDIO, GPIO, UART, etc. It has been certified by various regional operators, industry associations and local regulation, satisfying different deployment requirements for customers worldwide.

Although IoT solutions may not stop disasters, the flexibility and coverage of wireless networks, together with the reliability and resilience of IoT, can create new ways to build a safer community.

Watch how Fibocom is bringing connectivity to more industries, more devices, and more applications:

For more information, please visit:

Resources

To cοntact, the Fibocom Sales Desk, visit Contact Sales

Dual +5 V/-5V @ 200 mA Regulated Linear Power Supply

The project presented here is a dual AC to DC output linear power supply. This power supply provides low ripple low noise DC regulated output. Usually, transformer-based linear power supplies are considered very bulky and inefficient, but this power supply still is very important for sensitive applications such as analog circuits, communications devices, radio devices, audio circuits, OPAMP-based projects etc.

Parts Explanation

  • CN1 is AC input
  • Jumper J2 for 230V AC input
  • Jumper J1/J3 for 115V AC
  • Transformer T1-Step down transformer provides 6.3V-0V-6.3V AC Outputs
  • Bridge Rectifier BR1 converts AC into DC
  • Capacitor C2/C4 DC filter capacitors
  • CN2 unregulated DC output approx. +/-9V DC
  • U1 +5V regulator
  • U2 -5V regulator
  • D1 +5 power LED
  • D2 -5V power LED
  • R1/R2 current limiting resistors for LEDs
  • C1/C3/C5/C6 output DC capacitors
  • CN3 Male header +/-5V regulated output
  • CN4 screw terminal +/-5V regulated output
Note1: Power supply supports 230V AC input and 115V AC input. Jumpers are located under PCB for input voltage selection, remove input power cable while changing Jumper selection.
Note 2: This power supply contains hazardous voltage at the input side, PCB must be installed in an encloser that prevents accidental contact. Use plastic screws to mount this power supply PCB.

Input Voltage Selection

  • For 230V AC Input: Close Jumper J2 and Jumper J1, and Open J3
  • For 115V AC Input: Close Jumper J1 and J3, Open Jumper J2

Other Similar AC to DC Power Supplies

Features

  • Input 230V or 115V AC Input (Use Jumpers to Select 230V or 115V AC)
  • Output +/-5V DC (Dual Output)
  • Output Ripple Approx. 5mV
  • Maximum Load Current 400mA (+5V@200mA, -5V@200mA)
  • 2 x Power LEDs, for 5V and -5V
  • Screw Terminal for AC Input
  • Screw Terminal for Regulated DC Output
  • 3 Pin Male Header Provides Unregulated DC Output
  • 4 Pin Male Header for Regulated DC Output
  • PCB Dimensions 88.42  x 36.67 mm

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIERSUPPLIER PART NO
11BR1BRIDGE GBL08 OR GBL06VISHAYDIGIKEYGBL06-E3/45GI-ND
21CN13 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1248-ND
31CN23 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5316-ND
41CN34 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5317-ND
51CN43 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1248-ND
62C1,C50.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
72C2,C41000uF/25VRUBYCONDIGIKEY1189-2960-ND
82C3,C610uF/25V SMD SIZE 1206MURATA/YAGEODIGIKEY
91D1RED LED SMD SIZE 0805LITE ONDIGIKEY160-1427-1-ND
101D2GREEN LED SMD SIZE 0805DIALIGHTDIGIKEY350-2044-1-ND
113J1,J2,J3SOLDER JUMPER 0-OHMS RESSISTOR SIZE 1206MURATA/YAGEODIGIKEY
122R1,R2470E 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
131T1TAMURA 3FD-312TAMURADIGIKEYMT2102-ND
141U1LM7805 TO220TIDIGIKEY296-44520-1-ND
151U2LM7905 TO220TIDIGIKEYLM7905CTNS/NOPB-ND

Connections

Gerber View

Photos










Video

LM7805 Datasheet

LMZ12008 Power Modules Series have integrated Inductor

48W, 8A SIMPLE SWITCHER® Power Module with 20V Maximum Input Voltage. The LMZ12008 SIMPLE SWITCHER© power modules are an easy to use step down DC to DC solution capable of driving up to 8A load.

Texas Instruments LMZ120xx SIMPLE SWITCHER® Power Modules provide easy-to-use step-down DC-DC solutions with exceptional power conversion efficiency, output voltage accuracy, line and load regulation. LMZ12001 / LMZ12002 / LMZ12003 SIMPLE SWITCHER® Power Modules can accept an input voltage rail between 4.5V and 20V and deliver an adjustable, highly accurate output voltage as low are 0.8V. These TI power modules have either 1A (LMZ12001), 2A (LMZ12002), or 3A (LMZ12003) output current and offer efficiency of up to 92%. The LMZ12001, LMZ12002, and LMZ12003 have a -40 to +125°C junction temperature range and provide fast transient response for FPGAs and ASICs. These TI devices are ideal for use in point of load conversions from 5V and 12V input rail, time critical, space-constrained high thermal requirement, and negative output voltage applications.

Features:

  • Integrated shielded inductor
  • Simple PCB layout
  • Fixed switching frequency (350kHz)
  • Flexible startup sequencing using external soft-start, tracking and precision enable
  • Protection against inrush currents and faults such as input UVLO and output short circuit
  • Single exposed pad and standard pinout for easy mounting and manufacturing
  • Fully enabled for WEBENCH® Power Designer
  • High efficiency reduces system heat generation
  • Low radiated emissions (EMI) complies with EN55022
  • Only 7 external components
  • Low output voltage ripple
  • No external heat sink required

Specifications

  • Applications:ITE (Commercial)
  • Current – Output (Max):8A
  • Efficiency:92%
  • Features:UVLO
  • Mounting Type:Surface Mount
  • Number of Outputs:1
  • Operating Temperature:-40°C ~ 125°C
  • Package / Case:TO-PMOD-11, Power Module
  • Size / Dimension:0.59″ L x 0.59″ W x 0.23″ H (15.0mm x 15.0mm x 5.9mm)
  • Type:Non-Isolated PoL Module
  • Voltage – Input (Max):20V
  • Voltage – Input (Min):6V
  • Voltage – Output 1:0.8 ~ 6V

Typical Application

Datasheets

more information: https://www.ti.com/product/LMZ12008

SOM-5883 with 11th Gen. Intel® Core™ Processors Empower Breakthrough Performance and Next Gen. I/O Expansion

Advantech, a leading embedded and AIoT solutions provider, has released the new SOM-5883 Computer-on-Module for high-performance edge computing applications. SOM-5883 is a COM Express Basic Type6 Module, with integrated 11th Gen. Intel® Core™ processors (formally called Tiger Lake-H). It offers octa-core computing performance under TDP 45Watt, with excellent Intel Iris Xe graphics and ready-to-use Edge AI Suite software toolkit, making SOM-5883 an ideal solution for medical imaging and AI applications.

To resolve the heavy workload of image processing applications, SOM-5883 is designed to support up to 128GB DDR4 3200 SODIMM, with high capacity and high-frequency memory technology paired with ground-breaking computing and graphics performance. In addition, there are numerous super speed I/O interface including PCIe Gen4(16GT/s) and USB3.2 Gen2(10Gbps), 2.5Gbase-T for enhanced system expansion. With optional NVMe SSD and TPM2.0 onboard design, -40~85oC operating temperature and 8.5~20V power input, SOM-5883 is more reliable and delivers greater security for edge computing requirements.

Breakthrough Performance: Octa-Core 11th Gen. Intel Processors and QFCS

Equipped with 11th Gen. Intel Processors, SOM-5883 is the first COM Express Type6 module that supports up to 8 Core processors and 128GB DDR4 memory. The SOM-5883 offers a 1.7X computing performance growth and 1.5X 3D graphics upgrade. Advantech provides Edge AI Suite containing Intel Open VINO and more than a hundred AI models to help customers quickly find the right SKU of target AI performance. SOM-5883 has four independent displays up to 4K over three DisplayPort 1.4/HDMI 2.1, optional eDP or LVDS, and VGAl, and it is configurable up to two ports 8K HDR outputs.

Moreover, this product boasts excellent power efficiency ensuring outstanding computing performance while keeping the same 45-Watt CPU TDP as former generations, making it an ideal update on existing systems. With Advantech’s unique QFCS (Quadra flow cooling system) thermal technology, SOM-5883 can release 100% CPU power and deliver optimal performance. The thermal solution design is not only efficient in heat dissipation but also thin, quiet and light, so customers can easily integrate into a 1U height slim chassis.

Next Gen. I/O Interface: x16 PCIe Gen4, 2.5GbE with TSN, and USB4

SOM-5883 is the first COM Express Type6 module offering x16 PCIe gen4, while its bandwidth is double to 16GT/s allowing 31.5GB/s throughput via 16 PCIe lanes. With this, graphics-driven applications such as ultrasound can achieve much more accurate diagnosis by the combination of native graphics engine and external expansion for system configuration. At the same time, SOM-5883 supports multiple cutting-edge I/O technologies. It enables super speed data transmission with improved bandwidth of 2.5G LAN and an NVMe SSD onboard, with the capability to transfer huge data between AIoT applications. The 2.5G LAN equipped with TSN (Time Sensitive Networking) is the ideal choice for automation or edge applications requiring low-latency. This technology fulfills the demand of real-time traffic, prioritising critical data in the communication process, such as transferring command, actions or safety information on time. It also supplies extraordinary USB4, which can be configured as DisplayPort, Thunderbolt, USB 3.2, and USB 2.0 in a slim USB-Type-C connector. Advantech also offers USB4 reference design documents and SOM-MZ10 development board, to help its partners accelerate the implementation of new I/O technology.

Key Features

  • COM Express R3.0 Basic Type 6 Module
  • 11th Gen. Intel® Xeon, and Core™ i7/i5/i3/Celeron™ Processors
  • Up to 128GB DDR4 3200MT/s with ECC support
  • Four independent displays with 3x DDI, eDP/LVDS or VGA.
  • 1 PCIe x16 Gen 4, 8 PCIe Gen 3, 4 USB 3.2 Gen 2, 2.5G LAN w/TSN, 2 SATA3 Ports
  • Supports Advantech iManager, Edge-AI Suite and WISE-DeviceOn
  • Operating Temp: Standard: 0 ~ 60 °C (32 ~ 140 °F), Extended: -40 ~ 85 °C (-40 ~ 185 °F)

Reliable Design and Easy Management for Edge Computing

As well as its excellent performance, the new SOM-5883 boasts an optimized design to adapt to diverse applications. It features ECC memory for the error correct function, TPM2.0 chip onboard to prevent cyber-threats, 8.5-20V wide range power input, and -40o~85oC wide operating temperature; the NVMe SSD soldered down design makes it more robust and resistant to vibration when operating in harsh environments, especially in edge computing applications. Beyond the hardware, SOM-5883 also supports BIOS storage protection, security boot, BIOS power-management, plus WISE-DeviceOn for remote hardware monitoring and OTA (over-the-air) software update to prevent system malfunction.

For more information, please contact the Advantech sales support team locally or visit the company’s website: https://www2.advantech.com/embedded-boards-design-in-services/com/

IR Remote Controlled Motorized Potentiometer – Arduino Compatible

This is an Infrared Remote controlled motorized potentiometer controller. It’s an open-source project built on the Arduino platform and compatible with Arduino IDE for custom programming. The project consists ATMEGA328 microcontroller, IR sensor, L293D motor driver, ALPS Motorized potentiometer, a connector for Arduino programming, etc. The L293D H-bridge drives the potentiometer motor, 2 Parallel direction pins are used to change the motor direction which moves the POT in a forward or reverse direction.

Note: Motorized Potentiometers are built with a highly reliable linear potentiometer, with a slip clutch, geartrain, and motor in a single panel mount assembly which can be manually adjusted.

Arduino Pins

  • Digital Pin D2 >> IR Sensor,
  • Digital Pin D5 >>Motor Direction IN1+IN3,
  • Digital Pin D6 >> Motor Direction IN2+IN4

Components

  • U1 IR Sensor
  • U2 ATMEGA328 Micro-controller
  • U3 Motor Driver
  • CN3 Programming Connector
  • CN2 Potentiometer Connection
  • CN1 Power Input 5 To 6V

Arduino Code and IR Remote

  • Arduino Code is available as a download below
  • Switch A and Switch C of IR Remote Controls Motor Direction.
  • User May modify this code as per requirement
  • The project is compatible with Spark fun IR Remote COM-1489.
  • Any IR Remote with 38Khz frequency will work with this project

More info about Spark fun IR Remote

Any IR Remote Can work with this project, to learn more….

Programming the project with Arduino IDE

Use CN3 for Boot-Loader & Arduino Programming. More details here:

Bootloader Programming Connections

Code Upload Connections

Features

  • Supply Input 5-6V DC @ 100mA
  • PCB Dimensions 67.47 x 44.77 mm

Schematic

Parts List

NOQNTY.REF.DESC.MANUFACTURERSUPPLIERSUPPLIER PART NO
11CN12 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
22CN2,CN38 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5321-ND
32C110uF/16V SMD SIZE 1210MURATA/YAGEODIGIKEY
44C2,C3,C5,C60.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
52C7,C822PF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
61D11N4007 SMDDIODEDIGIKEYS1MBDITR-ND
71MG1MOTORIZED POTALPSMOUSER688-RK16812MG099
86R1,R2,R3,R4,R5,R610K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
91R71M 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
101U1TSOP34438 OR TSOP1838VISHAYDIGIKEYTSOP34438-ND
111U2ATMEGA328TQPF-32MICROCHIPDIGIKEYATMEGA328PB-AURCT-ND
121U3L293DSTDIGIKEY497-2936-5-ND
131X116MhzECS INCDIGIKEYX1103-ND
141C4100uFAVX CORPDIGIKEY478-1718-1-ND
151U4 - OPTIONALSiP2100VishayDIGIKEYSIP2100DY-T1-GE3CT-ND

Connections

Potentiometer Layout

Gerber View

Photos

Video

L293D Datasheet

Low Voltage Microphone Preamplifier with Variable Compression and Noise Canceling

This is a complete microphone signal conditioning project. Designed primarily for voice-band applications, this project provides amplification, limiting, variable compression, and noise gate. User-adjustable compression ratio, noise gate threshold, and two different fixed gains optimize circuit operation for a variety of applications.

This is a complete and flexible solution for conditioning condenser microphones for personal electronics and computer audio systems. It is also excellent for improving vocal clarity in communications and the public address systems. A low noise voltage-controlled amplifier (VCA) provides a gain that is dynamically adjusted by a control loop to maintain a set compressions characteristic.  The compression ratio is set by a jumper and can be varied from 1:1 to over 10:1 relative to the fixed rotation point. Signals above the rotation point are limited to prevent overload and eliminate popping.

A downward expander (noise gate) prevents the amplification of background noise or hum. This results in an optimized signal level prior to digitization, thereby eliminating the need for additional gain or attenuation in the digital domain. The flexibility of setting the compression ratio and the time constant of the level detector, coupled with two values of rotation point, make the SSM2167 easy to integrate into a wide variety of microphone conditioning applications.

Compression Ratio

This project provides four different settings for the compression ratio in the same manner as the noise gate threshold. Experiment with different compression ratios to determine what sounds best in a given system, starting with 2:1 is recommended. A high compression ratio exaggerates the effect of the noise gate because the compression ratio determines the gain at the noise gate.  Compression of 10:1 only in systems where the noise floor is well below the noise gate. Most systems require between 2:1 and 5:1 compression for best results. The compression ratio keeps the output steady over a range of source to microphone distances.

Note 1: Do not install Q1, R2, C5, they are optional components, can be used when very low input signal is applied.

Electret Microphone or Dynamic Microphone (Project Supports Electret Microphone and Dynamic Microphone)

  • Open Jumper J1 and Electret Microphone to Connect Dynamic Microphone or self-power microphone.
  • Close Jumper J1 for Electret Microphone

Setting The Compression Ratio (PCB Solder Jumper) Jumper J2 Compression Ration 10:1

  • Jumper J2 Compression Ration 10:1
  • Jumper J3 Compression Ration 5:1
  • Jumper J4 Compression Ration 2:1
  • Jumper J5 Compression Ration 1:1

Setting The Noise Gate Threshold (PCB Solder Jumper) Noise gate keeps the background sounds subdued.

  • Jumper J7 Noise Gate (dBV) -55
  • Jumper J8 Noise Gate (dBV) -54
  • Jumper J9 Noise Gate (dBV) -48
  • Jumper J10 Noise Gate (dBV) -40

Features

  • Operating Supply 3.3V DC
  • On Board Condenser Microphone
  • On Board Power LED
  • Jumpers to Set Various Noise Gate (J7, J8, J9, J10)
  • Jumpers to Set Various Compression Ratio (J2, J3, J4, J5)
  • Jumper J1 for Biasing Voltage to Microphone, Open if Biasing Supply not Required
  • PCB Dimensions 51.12 x 16.35 mm

Schematic

Parts List

NO.SR.REF.DESC.MANUFACTURERSUPPLIER SUPPLIER PART NO
11CN14 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5317-ND
23C1,C3,C910uF/16V SMD SIZE 1210KEMETDIGIKEY399-18766-1-ND
32C2,C80.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
41C42.2uF/16V SMD SIZE 1206 OR 1210MURATA/YAGEODIGIKEY
53Q1,R2,C5DNPDIGIKEYDO NOT INSTAL L
62R6,C60E SMD 0805 OR SOLDER JUMPERDIGIKEY
71C71KPF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
81D1LED RED SMD SIZE 0805LITE ONDIGIKEY160-1427-1-ND
910J1-J10PCB SOLDER JUMPERDIGIKEY
101MK1MICROPHONEPUI AUDIODIGIKEY668-1484-ND
111R12.2K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
121R3499K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
131R4100K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
141R5175K 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
151R710K 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
161R875K 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
171R915K 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
181R105K 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
191R112K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
201R121K 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
211R13220E 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
221U1SSM2167ANALOG DEVICESDIGIKEYSSM2167-1RMZ-R7TR-ND

Connections

Gerber View

Photos

Video

SSM2167 Datasheet

Maxim’s MAX4295 Circuit provides Class D motor control

Class D audio amplifiers provide a dual benefit for battery-powered portable devices (Figure 1). They enhance battery life, and they produce much less power dissipation than do their linear cousins. Those features make Class D amplifiers ideal candidates for controlling speed and direction in small electric motors.

The standard application circuit for a Class D audio amplifier, IC1, requires only slight modifications. In place of the usual audio-signal input is a variable dc voltage that potentiometer R2 generates. Resistor R1 biases the potentiometer to match the input range of IC1. Full-counterclockwise rotation of the potentiometer corresponds to maximum-speed reverse rotation of the motor. Midscale on the potentiometer corresponds to motor off, and full-clockwise rotation of the potentiometer produces maximum-speed forward rotation in the motor. The characteristics of a given motor may allow you to eliminate the amplifier’s output filter, which comprises L1, L2, C1, and C2. But, unless the control circuitry is near the motor, you should include the filter to reduce EMI.

author: John Guy

Small-Sized Broadband Inductors for High-Impedance Performance in Vehicle-Mounted PoC

Measuring 1812 inch, Murata’s new broadband inductors for Bias-T circuits provide high inductance of 22 μH and high current of 700 mA in vehicle-mounted PoC used in SerDes interfaces. These new inductors use Murata’s original ceramic materials and coil structures to offer high performance.

The new LQW43FT_0H series ensures high-impedance performance over a broad range in the low frequency band from several MHz to 100 MHz. The product can be used in combination with existing Murata products LQW32FT 0H Series (1210 inch size) and LQW21FT 0H Series (0805 inch size) to reduce the number of parts and mounting space required for PoC. This can help to reduce the size and weight of devices installed in vehicle-mounted cameras.

Key Features of LQW43FT_0H Series Inductors

  • Small-Size: 1812 inch size inductor for Bias-T circuits that provides both a high inductance of 22 μH and a high current of 700 mA.
  • Ideal for use as inductors for vehicle-mounted PoC used in SerDes interfaces.
  • Product lineup supports a wide inductance range (10 μH to 22 μH).

The mass production of LQW43FT_0H series is scheduled to begin in September 2021.

5 W + 5 W Dual BTL Class-D Audio Amplifier

The project described here is a high-efficiency dual BTL class-D audio amplifier with single supply operations. The project was built using TDA7491LP13TR from ST. The low profile PCB design can fit in a small area, operating power supply 9-12V DC, Project supports single-ended or differential audio signal inputs. Jumpers are provided to set the various gains, standby, and mute functions.

5 W + 5 W Dual BTL Class-D Audio Amplifier – [Link]

AS7038RB Biosensor Solution with Embedded ECG Channel

ams’ biosensor solution is based on photoplethysmography and electrocardiogram

The operation of the ams AS7038RB is based on photoplethysmography (PPG) and electrocardiogram (ECG). PPG is the most used HRM method, which measures pulse rate by sampling light modulated by the blood vessels, which expand and contract as blood pulses through them. PPG is also used to measure blood oxygen saturation (SpO2). ECG is the reference for any measurement of the biopotential generated by the heart. Embedded ECG analog front end satisfies IEC 60601-2-47 requirements.

The solution includes LED drivers, photo-sensor, analog front-end (AFE), sequencer, and application software. In addition, the device also enables skin temperature and skin resistivity measurements by providing interfaces to external sensors.

Compare to ams’ previous generation, AS7038RB has a 250% larger photodiode with lower LEDs driving current to achieve the high PPG performances. The AS7038RB’s low-power design and small form factor are particularly well suited to application in earbuds, fitness bands, smartwatches, sports watches, and smart patches in which board space is limited and in which users look for extended, multi-day intervals between battery recharges. The thin package dimension makes the AS7038RB suitable for height constrained solution likes earbuds or smart patches. The photodiode filter centered on red and infrared wavelengths and embedded ADC make the AS7038RB suitable for disposable pulse oximeter solutions.

Features

  • Address all skin types
  • Allows smallest application size, e.g., narrow HRM measurement band
  • ECG with dry electrodes
  • Enabling SpO2 measurements
  • Integrated optical interference filter
  • Low power: long operating time
  • Works reliably with ambient light

Applications

  • Optical sensor platforms
  • Disposable oximeters
  • Smart patches
  • Earbuds
  • Fitness bands
  • Pulse oximeters
  • ECG monitoring

Block Diagram

more information: https://ams.com/as7038gb

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