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EF_LSXO

Efabless

COMING SOON

Low Speed Crystal Oscillator (32.768kHz)

Description

This IP is a Low Speed Crystal Oscillator (LSXO). It was taped out on the CI2404 Efabless Chipalooza tapeout. The specifications below are target specifications. Check back for characterized numbers once the silicon is characterized.

Pinout

Pin name Use Domain Notes
avdd analog power 3.3V
dvdd digital power 1.8V
avss analog ground
dvss digital ground
ibias bandgap-referenced current input
ena enable 1.8V domain
standby standby biasing 1.8V domain
xin crystal input 3.3V domain
xout crystal output 3.3V domain
dout clock output 1.8V domain

Specifications

Parameter Min Typical Max Unit Notes
Supply Voltage 2.7 3.3 5.5 V Vsup
Operating Temperature -40 25 85 °C
Power Consumption (enabled) 0.8 1 1.2 µA Measured at 3.3V and 25°C
Power Consumption (disabled) 0.5 1 2 nA Measured at 3.3V and 25°C
Duty Cycle 45 50 55 %
Start-up Time (power-up) 1 2 4 ms
Start-up Time (enable) 1 1 2 ms
Input Load Capacitance 2 pF Approx. pad and package capacitance
Output Load Capacitance 200 fF
Frequency Stability -200 0 0 ppm Over operating temperature range
Frequency Accuracy -20 0 20 ppm At 25°C
Output Signal Level Low 0 0.1 Vpp CMOS
Output Signal Level High Vsup - 0.1 Vsup Vpp CMOS
Output Rise/Fall Time 4 5 6 ns 10-90% of V_max at load

Summary

Catalog ID

EF_LSXO

Provider

Vendor

Vendor

Efabless

Node

130nm

Foundry

Skywater

Category

External Oscillator

Licensing

Info

Open Source (Free)

Quality

Certification

EF Certified

Maturity

Integrated