Low Power 32kHz Pierce Oscillator
Ultra-low power consumption: 489 nA max average current
Overview
The TS_XOSC_32k_X8 is a low power 32kHz Pierce oscillator that generates a VBAT-level logic square wave when a 32kHz quartz crystal is connected to its input XIN and its test input pin OSC_BYPASS is tied to ground.
If there is no quartz crystal present or the circuit is in test mode, the test input OSC_BYPASS is tied to VBAT and the internal oscillator circuit is disconnected from XIN pin and the XIN input pin is routed to oscillator output. This test feature can be used to bypass internal oscillator in case of startup or some other type of failure.
The circuit operates with the supply voltage VBAT from 2.5V to 5.5V with a maximum current consumption less than 500nA.
The Pierce oscillator signal shaping is performed by an output stage which consists of a differential amplifier, common source amplifier and three inverters.
Technology: X-FAB XC018-0.18µm CMOS process
OPERATING CONDITIONS
| Parameters | Values |
| Junction temperature range | -40°C to 60°C |
| Supply voltage | 2.5V to 5.5V |
| Quartz crystal series load capacitance (CL) | 16pF |
| Quartz crystal equivalent series resistance (ESR) | 40kΩ to 60kΩ |
| Quartz crystal shunt capacitance (C0) | 1pF to 1.2pF |
| 32kHz quartz crystal drive level | 11nW max |
SPECIFICATION
| Parameters | Values |
| VBAT average current consumption | 489nA max |
| Duty cycle | 49% to 52% |
| Oscillator allowance | 170kΩ |
| Safety factor | 4.25 |
| Start-up time constant | 150mS |
Applications
- Battery-powered ASICs and SoCs
- Low-power wearable and portable electronics
- Always-on and low-power clock domains
Silicon Options
| Foundry | Node | Process | Maturity |
|---|---|---|---|
| X-FAB | 180nm | XC018 | Available on request |
Specifications
Identity
Files
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Provider
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Frequently asked questions about Oscillator IP cores
What is Low Power 32kHz Pierce Oscillator?
Low Power 32kHz Pierce Oscillator is a Oscillator IP core from TES Electronic Solutions listed on Semi IP Hub. It is listed with support for x-fab Available on request.
How should engineers evaluate this Oscillator?
Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this Oscillator IP.
Can this semiconductor IP be compared with similar products?
Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.