Oscillators

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

LED Driver IC 16 Output Linear PWM Dimming 25mA 28-TSSOP The PCA9685 is an I2C-bus controlled 16-channel LED controller optimized for Red/Green/Blue/Amber (RGBA) color backlighting applications. Each LED output has its own 12-bit resolution (4096 steps) fixed frequency individual PWM controller that operates at a programmable frequency from a typical of 24 Hz to 1526 Hz with a duty cycle that is adjustable from 0 % to 100 % to allow the LED to be set to a specific brightness value. All outputs are set to the same PWM frequency. Each LED output can be off or on (no PWM control), or set at its individual PWM controller value. The LED output driver is programmed to be either open-drain with a 25 mA current sink capability at 5 V or totem pole with a 25 mA sink, 10 mA source capability at 5 V. The PCA9685 operates with a supply voltage range of 2.3 V to 5.5 V and the inputs and outputs are 5.5 V tolerant. LEDs can be directly connected to the LED output (up to 25 mA, 5.5 V) or controlled with external drivers and a minimum amount of discrete components for larger current or higher voltage LEDs. The PCA9685 is in the new Fast-mode Plus (Fm+) family. Fm+ devices offer higher frequency (up to 1 MHz) and more densely populated bus operation (up to 4000 pF). Although the PCA9635 and PCA9685 have many similar features, the PCA9685 has some unique features that make it more suitable for applications such as LCD or LED backlighting and Ambilight: • The PCA9685 allows staggered LED output on and off times to minimize current surges. The on and off time delay is independently programmable for each of the 16 channels. This feature is not available in PCA9635. • The PCA9685 has 4096 steps (12-bit PWM) of individual LED brightness control. The PCA9635 has only 256 steps (8-bit PWM). • When multiple LED controllers are incorporated in a system, the PWM pulse widths between multiple devices may differ if PCA9635s are used. The PCA9685 has a programmable prescaler to adjust the PWM pulse widths of multiple devices. • The PCA9685 has an external clock input pin that will accept user-supplied clock (50 MHz max.) in place of the internal 25 MHz oscillator. This feature allows synchronization of multiple devices. The PCA9635 does not have external clock input feature. • Like the PCA9635, PCA9685 also has a built-in oscillator for the PWM control. However, the frequency used for PWM control in the PCA9685 is adjustable from about 24 Hz to 1526 Hz as compared to the typical 97.6 kHz frequency of the PCA9635. This allows the use of PCA9685 with external power supply controllers. All bits are set at the same frequency. • The Power-On Reset (POR) default state of LEDn output pins is LOW in the case of PCA9685. It is HIGH for PCA9635. #CommonPartsLibrary #IntegratedCircuit #PowerManagement

CRYSTAL 8MHz 8pF SMD The NX3225GD-8MHZ-STD-CRA-3 is an automotive-grade surface-mount quartz crystal unit from NDK designed to provide a stable 8 MHz clock reference for microcontrollers, automotive ECUs, and embedded systems. It belongs to the NX3225GD series and is optimized for high reliability under harsh environmental conditions. Key Features 8 MHz fundamental-mode crystal Compact 3.2 mm × 2.5 mm × 1.0 mm SMD package 8 pF load capacitance ±50 ppm frequency tolerance ±150 ppm frequency stability over temperature Automotive-qualified with AEC-Q200 compliance Wide operating temperature range: −40°C to +150°C Excellent resistance to heat, vibration, shock, and solder cracking Stable startup characteristics in severe environments RoHS compliant Typical Applications Automotive engine control units (ECUs) MCU and CPU clock generation Industrial embedded systems Communication equipment Consumer electronics and IoT devices #CommonPartsLibrary #crystal oscillator #resonator