The PCB antenna presented in this document performs well for all frequencies in the 2.4-GHz ISM band. Except for two narrow dips, the antenna has an omni directional radiation pattern in the plane of the PCB. These properties will ensure stable performance regardless of operating frequency and positioning of the antenna.

1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC with 4.2 VBAT The BQ24075TRGTR (from Texas Instruments) is a highly integrated single-cell Li-Ion / Li-Polymer linear battery charger IC with power-path management. It is designed for portable and space-constrained applications, allowing a device to be powered from a USB port or AC adapter while simultaneously charging the battery. The device integrates charging control, power-path management, and safety features into a compact package. A key feature is its Dynamic Power Path Management (DPPM), which ensures the system is powered even when the battery is low or absent, while intelligently managing charging current. Key Features Battery Charging Supports single-cell Li-Ion / Li-Polymer batteries Up to 1.5 A programmable charge current Three-phase charging: Pre-charge (conditioning) Constant current Constant voltage Fixed 4.2 V charge voltage Power Path Management Dynamic Power Path Management (DPPM): Powers system and charges battery simultaneously Prioritizes system load over charging Allows system operation even with: Deeply discharged battery No battery connected Input & Power Features Operates from: USB input (100 mA / 500 mA selectable) AC adapter Programmable input current limit up to 1.5 A Input voltage range: ~4.35 V to 6.4 V (28 V max rating) Input dynamic power management (VIN-DPM) prevents source overload Protection & Safety Thermal regulation and shutdown Over-voltage protection (OVP) Short-circuit and reverse current protection Battery temperature monitoring (NTC thermistor input) Battery disconnect (SYSOFF) feature Control & Status Standalone operation (no MCU required, resistor-programmable) Charge status outputs: Charging Charge complete Power good Physical Characteristics Package: 16-pin VQFN (3 mm × 3 mm) Operating temperature: –40°C to +85°C #commonpartslibrary #integratedcircuit #powermanagement #batterycharger

1-MHz, Low-Power Operational Amplifier for Cost-Sensitive Systems 1.1 Texas Instruments TLV6002IDGKR 595-TLV6002IDGKR https://www.mouser.co.uk/ProductDetail/Texas-Instruments/TLV6002IDGKR?qs=8%252Br4Hz5Xir8oQMpG6jDeYA%3D%3D TLV6002IDGKR https://www.arrow.com/en/products/tlv6002idgkr/texas-instruments?region=nac

555 Type, Timer/Oscillator (Single) IC 100kHz 8-PDIP NE555 DIP-8 through hole The NE555P is a classic and widely used precision timer IC manufactured by companies like Texas Instruments and others. It belongs to the popular 555 timer family and is designed for generating accurate time delays, oscillations, and pulse signals. The “P” variant refers to the PDIP (Plastic Dual In-line Package), making it ideal for through-hole mounting, breadboarding, and prototyping. Internally, the NE555P consists of: Two comparators A flip-flop A discharge transistor A voltage divider network These blocks allow flexible configuration for timing and waveform generation. Key Features Timing & Operation Modes Monostable mode (one-shot pulse generation) Astable mode (continuous oscillator) Bistable mode (flip-flop operation) Electrical Characteristics Supply voltage range: 4.5V to 16V Output can source or sink up to 200 mA Adjustable duty cycle Performance High timing accuracy and stability Timing range from microseconds to hours (depends on external R and C) Temperature-stable operation Package & Usability 8-pin DIP (through-hole) package Easy to use for: Breadboards DIY electronics Educational projects Common Applications LED flashers and blinkers Pulse generation Time delay circuits PWM control (e.g., dimming LEDs, motor speed control) Tone/sound generation #Timer #commonpartslibrary

1-MHz, Low-Power Operational Amplifier for Cost-Sensitive Systems 1.1 Texas Instruments TLV6002IDGKR 595-TLV6002IDGKR https://www.mouser.co.uk/ProductDetail/Texas-Instruments/TLV6002IDGKR?qs=8%252Br4Hz5Xir8oQMpG6jDeYA%3D%3D TLV6002IDGKR https://www.arrow.com/en/products/tlv6002idgkr/texas-instruments?region=nac

2 Channel AFE 16 Bit 24-UQFN (4x4) The AFE881H1RRUR is a highly integrated analog front-end (AFE) designed for multi-channel data acquisition systems. It combines precision analog signal conditioning with high-speed analog-to-digital conversion, making it suitable for applications such as medical instrumentation, industrial measurement, and test and measurement equipment. The device integrates low-noise amplifiers, programmable gain stages, anti-aliasing filters, and high-resolution ADCs into a compact package, reducing system complexity and board space. Key Features Multi-channel analog front-end integration High-resolution analog-to-digital conversion Low-noise input stage for precision measurements Programmable gain amplifier (PGA) Integrated anti-aliasing filters High sampling rate capability Serial digital interface (SPI-compatible) Low power consumption for portable systems Compact surface-mount package Electrical Characteristics (Typical – refer to datasheet for exact values) Supply Voltage: ~1.8 V to 3.3 V (analog/digital domains) Input Voltage Range: Dependent on configuration Resolution: Up to 16-bit or higher (device dependent) Sampling Rate: Up to several MSPS (depending on mode) Power Consumption: Optimized for performance/power balance Functional Blocks Low-noise input buffer Programmable gain amplifier (PGA) Anti-aliasing filter High-speed ADC core Digital control interface (SPI) Clock management circuitry Package Information Package Type: QFN / VQFN (exact variant per TI RRU package code) Mounting Type: Surface Mount Pin Count: Typically 40+ pins (refer to datasheet for exact count) Applications Medical imaging and instrumentation Industrial data acquisition systems Oscilloscopes and test equipment Communication systems Precision sensor interfaces Advantages High integration reduces external components Improved signal integrity due to low-noise design Flexible configuration via programmable gain Compact footprint for dense PCB layouts Notes Exact electrical parameters, pin configuration, and performance metrics must be verified in the official Texas Instruments datasheet. Proper PCB layout (grounding, shielding, and decoupling) is critical for optimal performance. #commonpartslibrary #integratedcircuit

Texas Instruments CD4043BPWR, Quad SR Type Latch, Transparent, 3 State, 3 18 V, S-R Latch 4 Channel 1:1 IC Tri-State 16-TSSOP #CommonPartsLibrary #IntegratedCircuit #Logic-Latches #4000B

Texas Instruments LM5069MM-2/NOPB, Hot Swap Controller, 9 80 V, 10-Pin, MSOP

TEXAS INSTRUMENTS INA111AP. Instrument Amplifier, 1 Amplifier, 1 mV, 17 V/s, 2 MHz, 6V to18V, DIP #commonpartslibrary #integratedcircuit #dsp

Negative Hot Swap / Inrush Current Controller with Power Limiting, SOIC-14W high-voltage mosfet-driver hot-swap Texas Instruments *SOIC*7.5x9mm*P1.27mm*

USB Interface IC USB Type-C and USB Power Delivery (PD) controller with integrated power switches 1 595-TPS25751SRSMR https://www.mouser.co.uk/ProductDetail/Texas-Instruments/TPS25751SRSMR?qs=2wMNvWM5ZX4s3a9I%252B6VO9w%3D%3D Texas Instruments TPS25751SRSMR