Optical Sensor Ambient I2C 6-UDFN Exposed Pad ## Engineering Specification ## General Description The **MAX44009EDT+T** is an Analog Devices / Maxim Integrated digital ambient light sensor designed for portable electronics, display brightness control, industrial sensors, embedded systems, and low-power optical sensing applications. It integrates an ambient light photodiode, signal conditioning, analog-to-digital conversion, and an I²C digital output interface in a compact surface-mount package. The device is suitable for systems requiring automatic brightness adjustment, low current consumption, and light measurement behavior that closely follows human-eye response. ## Device Identification Manufacturer Part Number: **MAX44009EDT+T** Manufacturer: **Analog Devices / Maxim Integrated** Product Series: **MAX44009** Device Category: **Sensor Integrated Circuit** Device Type: **Digital Ambient Light Sensor** Sensor Interface: **I²C Digital Output** Mounting Type: **Surface Mount** Package Type: **UTDFN-Opto / UDFN** ## Functional Description The device functions as a digital ambient light sensor that measures surrounding light intensity and reports the measurement through an I²C interface. It is designed to help electronic systems adjust display brightness, conserve power, improve user visibility, and respond to changes in lighting conditions. The integrated optical sensing and digital conversion circuitry reduce the need for external analog signal-conditioning components. ## Optical Sensing Description The sensor includes an on-chip photodiode with spectral response optimized to approximate human-eye sensitivity. It also incorporates infrared and ultraviolet blocking capability to improve ambient light measurement accuracy. The adaptive gain function automatically selects the appropriate measurement range, allowing the device to operate across very low-light and bright-light conditions. ## Electrical Description The **MAX44009EDT+T** operates from a low-voltage supply range and is optimized for ultra-low power consumption. It supports digital communication through an I²C interface and is suitable for battery-powered and energy-sensitive systems. Proper supply decoupling, pull-up resistor selection, and bus voltage compatibility should be considered during circuit design. ## Package and Mechanical Description The component is supplied in a compact surface-mount optical package suitable for space-constrained printed circuit board designs. The package is intended for placement where the optical sensing window has access to ambient light while maintaining proper mechanical protection from contamination, shadowing, and enclosure obstruction. ## Interface and Control Description The device communicates with a host microcontroller or processor through an I²C digital interface. The host can read ambient light data and configure device behavior through register-based communication. The selectable I²C addressing feature supports flexible integration in systems that may include multiple I²C peripherals. ## Mounting and Assembly Description The **MAX44009EDT+T** is intended for surface-mount PCB assembly using standard reflow soldering processes. PCB layout should follow the manufacturer’s recommended footprint and assembly guidance. The optical sensing area should remain unobstructed, clean, and aligned with the product enclosure opening or light pipe when used. ## Application Suitability The device is suitable for smartphones, tablets, notebooks, wearable electronics, handheld devices, display brightness control, industrial light sensing, smart home devices, battery-powered equipment, sensor modules, and embedded systems requiring digital ambient light detection. ## Design Considerations The design should account for sensor placement, optical window design, enclosure transparency, light pipe geometry, I²C bus pull-up values, supply voltage compatibility, ambient interference, temperature conditions, and contamination protection. The sensor should not be blocked by opaque materials or placed where shadows, reflections, or nearby LEDs may distort the measured ambient light level. ## Hashtags #commonpartslibrary #integratedcircuit #sensor #ambientlightsensor #digitalsensor #opticalsensor #analogdevices #maximintegrated #max44009 #max44009edt #i2csensor #lightmeasurement #brightnesscontrol #lowpowersensor #portableelectronics #displaycontrol #embeddedhardware #embeddeddesign #smdcomponent #surfacemount #utdfnpackage #uDFNpackage #pcbdesign #hardwaredesign #electronicscomponents #electronicparts #componentlibrary #engineeringparts #electronicsengineering

This project is VCNL3040 sensor module interfaced via I2C. It includes a VCNL3040 ambient light sensor, a voltage regulator (AP2112K-3.3TRG1), an I2C level shifter using BSS138 MOSFETs, and necessary support components. Circuit interfaces through a JST connector. All components are powered by a 3.3V power source. #industrialSensing #reusable #module #industrialsensing #vishay #sublayout

This is a reference design for a TSL25911FN-based sensor module, with level-shifted I2C communication. It includes a 3.3V regulator, I2C level shifter, filter capacitors, pull-up resistors, and JST connectors for interfacing. #Module #Template #sensor #light #reusable #module #industrialsensing #osramusa #sublayout

This project is a IR camera sensor module based on the TSL25911FN sensor, equipped with I2C communication technique. The module features a 3.3V regulator, I2C level shifter, LEDs, capacitors, resistors, and JST connectors for easy interfacing. #Module #Template #sensor #IR #reusable #module #industrialsensing #sublayout

The BOSCH BMM350 is a high-performance 3-axis magnetic sensor designed for a wide range of consumer applications, including magnetic compass functionality, virtual/augmented/mixed reality applications, high-end gaming, platform stabilization for image stabilization, and indoor navigation and dead-reckoning in robotics. Manufactured by Bosch Sensortec, this component leverages Tunnel Magneto Resistance (TMR) technology to provide precise magnetic-to-digital conversion. The BMM350 is housed in an ultra-small Wafer Level Chip Scale Package (WLCSP) measuring 1.28mm x 1.28mm x 0.5mm, making it ideally suited for mobile applications where space is at a premium. It features digital interfaces (I2C, I3C) for flexible system integration and operates across a wide voltage range from 1.72V to 3.6V. This sensor is designed to deliver high performance with an excellent temperature behavior characterized by low temperature coefficients for offset (TCO) and sensitivity (TCS), ensuring reliability and accuracy across its operational temperature range of -40°C to +85°C. Each device is tested and calibrated, ready for integration into a variety of applications, supported by an API for quick system development.

The Syntiant NDP120 Neural Decision Processor is a special purpose chip for audio and sensor processing for always-on applications in battery powered devices and other power constrained systems. The NDP120 applies neural processing to run multiple applications simultaneously with minimal power consumption. Built using the Syntiant Core 2 programmable deep learning architecture, NDP120 is designed to natively run multiple Deep Neural Networks (DNN) on a variety of architectures, such as CNN, RNN and fully connected networks. NDP120 brings a level of ML performance that delivers 25x the tensor throughput compared to the Syntiant Core 1 embedded in Syntiant’s NDP100 and NDP101 devices. A programmable HiFi 3 DSP is available for classical audio processing. Always-On Speech & Sensor-Fusion Processor

8km UART Through Hole RF Transceiver Modules and Modems RoHS,3.3V~5.2V,-40 ~ 80C The E32-433T30D is based on the Semtech SX1278 LoRa chipset and uses LoRa spread-spectrum modulation to achieve long-distance, highly reliable wireless communication even in noisy environments. It communicates with a microcontroller via UART (serial interface), making it easy to integrate with Arduino, ESP32, STM32, and similar systems. It is commonly used for IoT telemetry, remote control systems, sensor networks, and industrial monitoring, especially where GSM/Wi-Fi is unavailable or impractical. Key Features Frequency range: 410–441 MHz (433 MHz default) RF output power: 21–30 dBm (up to 1 W high-power version) LoRa modulation: High sensitivity and strong anti-interference Communication distance: up to ~8 km (open area, ideal conditions) Interface: UART TTL serial (3.3 V logic level) Sensitivity: around -147 dBm for long-range reception Low data rate support: ~0.3 kbps to 19.2 kbps Half-duplex communication (TX/RX not simultaneous) Configurable modes: normal / wake-up / power-saving / sleep via M0 & M1 pins Compact module size with SMA antenna connector Wide operating temperature: -40 °C to +85 °C Important Notes Requires external microcontroller (MCU) for operation (not standalone). Must not leave M0 and M1 pins floating (must be defined HIGH/LOW or GND). Works best with proper 433 MHz antenna (2–5 dBi recommended). Power supply must be stable (typically 5V with sufficient current capability). For maximum range, line-of-sight + correct antenna height matters more than raw power. Applications Smart agriculture monitoring Remote sensor networks Utility meter reading (water/gas) Industrial telemetry systems Drone/robot communication links Remote control & automation systems #E32_433T30D #Ebyte #LoRa #SX1278 #WirelessModule #IoT #Telemetry #LongRangeCommunication #UART #433MHzLoRa #EmbeddedSystems

Wireless Power Receiver PMIC 20-VQFN (3.5x4.5) BQ51013BRHLT is a wireless power receiver integrated circuit from Texas Instruments designed for inductive power transfer applications compliant with wireless charging standards. The device integrates power rectification, voltage regulation, communication control, and protection circuitry to enable efficient wireless charging for portable and embedded electronic devices. This receiver IC is optimized for low-power wireless charging systems and supports seamless energy transfer from compatible transmitter platforms without the need for physical connectors. It provides regulated power output suitable for charging batteries and powering embedded systems while incorporating dynamic power management, foreign object detection support, thermal protection, and overvoltage protection for safe operation. The BQ51013BRHLT is widely used in wearable electronics, wireless sensor platforms, medical devices, mobile accessories, handheld products, and compact consumer electronics requiring cable-free charging capability. Its compact package and high integration level simplify PCB layout and reduce external component requirements for space-constrained wireless power designs. #commonpartslibrary #wirelesscharging #powermanagement #texasinstruments #wirelesspower #batterycharging #embeddedhardware #portableelectronics #electronicscomponents #inductivecharging

The NX3225GD 8.000MHz STD-CRA-3 is a surface-mount quartz crystal resonator designed to provide a stable and accurate clock reference for electronic circuits. It is housed in a compact ceramic package suitable for space-constrained applications and is optimized for low power consumption and reliable frequency generation. This crystal is commonly used in microcontrollers, wireless communication modules, industrial control systems, consumer electronics, IoT devices, and embedded systems requiring precise timing and frequency control. Features Fundamental mode quartz crystal resonator Nominal frequency of 8.000 MHz Compact surface-mount ceramic package High frequency stability and accuracy Low equivalent series resistance Suitable for low-power oscillator circuits Excellent aging characteristics RoHS-compliant construction Designed for automated SMT assembly processes Reliable operation across industrial temperature environments Electrical Characteristics Crystal type: Quartz Crystal Resonator Frequency: 8.000 MHz Oscillation mode: Fundamental Load capacitance: Standard load capacitance configuration Frequency tolerance: Standard precision grade Frequency stability: Industrial-grade stability performance Equivalent series resistance optimized for MCU and RF oscillator circuits Low drive level operation High insulation resistance Mechanical Characteristics Surface-mount package Ceramic hermetic enclosure Compact footprint suitable for high-density PCB layouts Compatible with standard reflow soldering processes Designed for automated pick-and-place assembly Applications Microcontroller clock generation Wireless communication devices Bluetooth and RF modules IoT and smart devices Industrial automation equipment Embedded control systems Consumer electronics Timing and synchronization circuits Sensor interface modules Portable battery-powered products Compliance RoHS compliant Lead-free package Environmentally friendly manufacturing standards Suitable for commercial and industrial electronic applications #commonpartslibrary #crystal #quartzcrystal #frequencycontrol #timingdevice #clocksource #oscillator #smtcomponent #embeddedsystems #wirelesscommunication #industrialelectronics #consumerelectronics #iotdevices #passivecomponents #electroniccomponents

Charger IC Lithium Ion/Polymer 16-WQFN (3x3) The BQ25302RTER is a highly integrated single-cell lithium-ion and lithium-polymer battery charger and power-path management IC developed by Texas Instruments. The device is optimized for compact portable and wearable applications requiring efficient battery charging from USB or low-voltage DC power sources. It integrates a switching charger, power-path management, system voltage regulation, battery FET, and protection features into a compact package suitable for space-constrained designs. The device supports programmable charging current and voltage regulation while maintaining high power conversion efficiency through its switching charger architecture. Integrated power-path management allows the system load to operate simultaneously while charging the battery, improving system reliability and startup behavior when the battery is deeply discharged or absent. The BQ25302RTER includes input current limiting, thermal regulation, battery temperature monitoring support, and multiple safety timers to ensure safe charging operation. The charger automatically manages preconditioning, fast charging, charge termination, and recharge cycles for lithium-based battery chemistries. The device also supports USB-compliant input operation and includes configurable features through an I2C-compatible interface. Its compact WQFN package and high integration level reduce external component count and PCB area, making it suitable for wearable electronics, portable medical devices, IoT products, handheld instruments, wireless accessories, and battery-powered embedded systems. Electrical Characteristics Input operating voltage supports standard USB and low-voltage DC input sources suitable for portable electronics applications. Supports single-cell lithium-ion and lithium-polymer battery charging with programmable charge voltage regulation. Integrated high-efficiency switching charger architecture minimizes power dissipation and improves thermal performance compared to linear chargers. Programmable fast-charge current supports flexible battery capacity scaling and application-specific charging requirements. Integrated power-path management allows simultaneous battery charging and system power delivery. Includes programmable input current limiting to support USB current compliance and adapter protection. Automatic charge cycle management includes precharge, fast charge, termination, and recharge operation. Supports battery temperature qualification using external thermistor monitoring. Integrated thermal regulation dynamically reduces charge current during high-temperature operating conditions. Low quiescent current operation improves standby battery life in portable products. Protection Features Integrated overvoltage protection for input power safety. Battery overcurrent and short-circuit protection enhance system reliability. Thermal shutdown circuitry protects the device during excessive junction temperature conditions. Safety timers monitor charging duration and prevent abnormal charging operation. Input current limiting protects USB ports and weak power adapters from overload conditions. Undervoltage lockout prevents improper operation during insufficient input supply conditions. Interface and Control I2C-compatible serial interface enables configuration and monitoring of charger parameters. Status reporting supports system-level battery and charging management. Programmable charging parameters allow firmware-controlled optimization for different battery chemistries and capacities. Interrupt and status functions support embedded power management architectures. Package Information Supplied in a compact WQFN package optimized for portable and space-constrained PCB layouts. Package design supports efficient thermal dissipation and automated surface-mount assembly processes. RoHS-compliant and suitable for modern lead-free manufacturing requirements. Typical Applications Wearable electronics Wireless earbuds and audio accessories Portable medical devices IoT and embedded battery-powered systems Handheld consumer electronics Portable instrumentation Rechargeable sensor modules Compact USB-powered battery charging systems #CommonPartsLibrary #IntegratedCircuit #PowerManagement #battery charger

4 Channel AFE 12 Bit 36-WLCSP (2.8x2.56) The ADPD7000 is a highly integrated analog front end (AFE) designed for measuring various vital signals. The optical channel is designed as an optical transceiver, stimulating up to eight light emitting diodes (LEDs) and measuring the return signal on up to four separate current inputs. The signal chain rejects signal offsets and corruption from asynchronous modulated interference, typically from ambient light, eliminating the need for optical filters or externally controlled DC cancellation circuitry. The electrocardiography (ECG) signal acquisition is designed to support low noise, diagnostic level measurement in the presence of a variety of interferers. The ECG signal chain has a number of complementary features supporting ECG measurement, such as driven reference for common-mode rejection and lead off detection to identify a fallen electrode. The body impedance analysis (BIA) signal chain is designed for body impedance measurement with a configurable excitation path and measurement path. A 12-bit digital-to-analog converter (DAC) is used in the excitation path to generate the sinusoid wave and high precision measurement, with configurable filters used to measure the body response of the stimulus. The electrodermal activity (EDA) signal chain is designed for electrodermal activity. By multiplexing BIA and ECG peripheral circuits, the ADPD7000 supports high precision AC and DC measurement with 1 nS resolution. The data output and functional configuration use a serial port interface (SPI) on the ADPD7000. The control circuitry includes flexible LED signaling and synchronous detection, digital filters, digital wave generators, and configurable filters. The ADPD7000 is available in a 2.795 mm × 2.560 mm, 0.40 mm pitch, 36-ball WLCSP. ► Multimodal analog front end ► Optical channel ► 4 input channels with multiple operation modes for various sensor measurements ► 4-channel processing with simultaneous sampling ► 12 programmable time slots for synchronized sensor measurements ► Flexible input multiplexing to support single-ended sensor measurements ► 8 LED drivers, 2 of which can be driven simultaneously ► Flexible sampling rate from 0.004 Hz to 9 kHz using internal oscillators ► AC ambient light rejection: 78 dB up to 100 Hz ► 400 mA total LED peak drive current ► Individual ambient cancellation DAC at TIA input with 9-bit control up to 300 μA ► Individual LED DC cancellation DAC at TIA input with 7-bit control up to 190 μA ► ECG channel ► <1 µV RMS RTI noise at diagnosis bandwidth ► High input impedance 20 GΩ ► Accepts up to ±1.2 V of DC differential input range ► CMRR: 115 dB ► Flexible 4 electrode configurations to support various applications ► Both AC lead off detection and DC lead off detection ► Support always on, low power, lead on detection ► BIA channel ► Low power, high accuracy excitation path ► Configurable excitation frequency up to 250 kHz ► Sine wave excitation with a 12-bit DAC ► High accuracy with large imbalance contact impedance ≤20 kΩ ► Configurable receive filters with low noise design ► Complex impedance measurement engine ► Integrated current-limit resistors ► EDA channel ► Support both voltage excitation and current excitation ► 10 kΩ to100 MΩ measurement range with 1 nS resolution ► DFT and decimation for high accuracy measurement result ► SPI communications supported ► 704-byte FIFO

IC RF TxRx + MCU Bluetooth Bluetooth v5.3 2.4GHz 48-VFQFN Exposed Pad NRF52832-QFAA-R7 is an ultra-low-power wireless System-on-Chip (SoC) from Nordic Semiconductor, designed for Bluetooth Low Energy (BLE), ANT, NFC, and proprietary 2.4 GHz wireless applications. It integrates a high-performance ARM Cortex-M4F processor, memory, peripherals, and a 2.4 GHz radio into a single chip, making it ideal for IoT devices, wearables, wireless sensors, beacons, and smart peripherals. GHz protocols • 2.4 GHz transceiver • -96 dBm sensitivity in Bluetooth® low energy mode • Supported data rates: 1 Mbps, 2 Mbps Bluetooth® low energy mode • -20 to +4 dBm TX power, configurable in 4 dB steps • On-chip balun (single-ended RF) • 5.3 mA peak current in TX (0 dBm) • 5.4 mA peak current in RX • RSSI (1 dB resolution) • ARM® Cortex®-M4 32-bit processor with FPU, 64 MHz • 215 EEMBC CoreMark® score running from flash memory • 58 μA/MHz running from flash memory • 51.6 μA/MHz running from RAM • Data watchpoint and trace (DWT), embedded trace macrocell (ETM), and instrumentation trace macrocell (ITM) • Serial wire debug (SWD) • Trace port • Flexible power management • 1.7 V–3.6 V supply voltage range • Fully automatic LDO and DC/DC regulator system • Fast wake-up using 64 MHz internal oscillator • 0.3 μA at 3 V in System OFF mode • 0.7 μA at 3 V in System OFF mode with full 64 kB RAM retention • 1.9 μA at 3 V in System ON mode, no RAM retention, wake on RTC • Memory • 512 kB flash/64 kB RAM • 256 kB flash/32 kB RAM • Nordic SoftDevice ready • Support for concurrent multi-protocol • Type 2 near field communication (NFC-A) tag with wakeup-on-field and touchto-pair capabilities • 12-bit, 200 ksps ADC - 8 configurable channels with programmable gain • 64 level comparator • 15 level low power comparator with wakeup from System OFF mode • Temperature sensor • 32 general purpose I/O pins • 3x 4-channel pulse width modulator (PWM) unit with EasyDMA • Digital microphone interface (PDM) • 5x 32-bit timer with counter mode • Up to 3x SPI master/slave with EasyDMA • Up to 2x I2C compatible 2-wire master/slave • I2S with EasyDMA • UART (CTS/RTS) with EasyDMA • Programmable peripheral interconnect (PPI) • Quadrature decoder (QDEC) • AES HW encryption with EasyDMA • Autonomous peripheral operation without CPU intervention using PPI and EasyDMA • 3x real-time counter (RTC) • Single crystal operation • Package variants • QFN48 package, 6 × 6 mm • WLCSP package, 3.0 × 3.2 mm #CommonPartsLibrary #IntegratedCircuit