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EF_Comparator

Efabless

COMING SOON

Comparator

Description

This comparator is a precision rail-to-rail comparator with hysteresis and offset correction. It was taped out on the CI2404 Chipalooza tapeout. The specifications below are target specifications. Check back for characterized numbers once the silicon is characterized.

Pinout

Pin Name Use Power Domain Notes
avdd analog power 3.3-5.5V
dvdd digital power 1.8V
avss analog ground
dvss digital ground
ena enable dvdd domain
vinn negative side input avdd domain
vinp positive side input avdd domain
ibias bandgap-controlled current bias
vout output dvdd domain CMOS digital
vhyst[1:0] hysteresis select

Specification

Parameter Min Typical Max Unit Notes
Operating Voltage 2.95 3.3 5.5 V
Operating Temperature -40 25 85 °C
Power Consumption (enabled) 15 20 µA Measured at 1.8V and 25°C
Power Consumption (disabled) 5 10 nA Measured at 1.8V and 25°C
Input Offset Voltage 0.5 1 mV All corners voltage and temperature
Propagation Delay 0.5 1 µs With 200mV overdrive
Input Common-Mode Range 0 50 100 % Percent of VDD
Output Current Drive N/A mA (Use standard cell buffer at output)
Output Voltage Swing 0 1.8 V Rail-to-rail output
Input Capacitance 0.5 1 2 pF
Hysteresis (off) 1 2 5 mV
Hysteresis (low) 5 10 20 mV
Hysteresis (high) 25 50 100 mV
Frequency Bandwidth 5 10 20 kHz
PSRR (Power Supply Rejection) 30 40 dB (negotiable)
CMRR (Common-Mode Rejection) 30 40 dB (negotiable)
Output load 1 2 pF (condition)
Hysteresis selection (bits) 2 Off/high/low

Summary

Catalog ID

EF_COMPARATOR

Provider

Vendor

Vendor

Efabless

Node

130nm

Foundry

Skywater

Category

Comparator

Licensing

Info

Open Source (Free)

Quality

Certification

EF Certified

Maturity

Integrated