EmbeddedRelated.com
The 2026 Embedded Online Conference
SIT8021AC-J4-18S-24.000000

SIT8021AC-J4-18S-24.000000

SiTime
24 MHz XO (Standard) LVCMOS Oscillator 1.8V Standby (Power Down) 4-UFBGA, CSPBGA
Active

Overview

The SIT8021AC-J4-18S-24.000000 is an ultra-low power 24 MHz MEMS oscillator designed for battery-operated applications. Part of the SiT8021 series, it features an extremely small 1.5 x 0.8 mm footprint and a maximum supply current of only 130uA, making it ideal for compact, power-sensitive electronics.

Why Choose This Part

This MEMS oscillator offers significantly better reliability and shock resistance than traditional quartz crystals in a package that is up to 80 percent smaller. Its ultra-low power profile and 1.8V operation are specifically optimized for modern mobile chipsets and battery-powered microcontrollers.

Applications

Wearable Devices
Provides a stable 24 MHz clock for application processors in smartwatches and fitness trackers where board space is at a premium.
IoT Sensor Nodes
Utilizes the low 130uA current consumption and standby mode to extend battery life in remote wireless sensors.
Portable Healthcare
Serves as a reliable frequency reference in handheld medical monitors requiring high vibration resistance and small form factors.

Key Specifications

Type XO (Standard)
Output LVCMOS
Function Standby (Power Down)
Frequency 24 MHz
Mounting Type Surface Mount
Base Resonator MEMS
Package / Case 4-UFBGA, CSPBGA
Size / Dimension 0.061" L x 0.033" W (1.54mm x 0.84mm)
Voltage - Supply 1.8V
Frequency Stability +/-100ppm
Height - Seated (Max) 0.024" (0.60mm)
Operating Temperature -20degC ~ 70degC
Current - Supply (Max) 130uA
Supplier Device Package 4-CSP (1.54x.84)

Getting Started

Ensure your PCB design includes a 0.1uF bypass capacitor placed as close as possible to the VDD pin. Since this is a 4-UFBGA CSP package, pay close attention to solder mask defined pads and precise pick-and-place alignment during assembly. Use the Standby (S) pin to power down the device when the clock is not required by the system.

The 2026 Embedded Online Conference