55.22 AC Electrical Specifications

Table 55-30. Comparator Electrical Specifications
AC CHARACTERISTICS Standard Operating Conditions: VDD = AVDD = 1.71V to 3.63V (unless otherwise stated)

Operating temperature:

-40°C ≤ TA ≤ +85°C for Industrial Temperature

Param. No. Symbol Characteristics Min. Typ. Max. Units Conditions
CMP_1 VIOFF Input Offset Voltage -14 14 mV COMPCTRLn.SPEED = 0x3
-20 20 COMPCTRLn.SPEED = 0x0
CMP_4 VIN Input Voltage Range AVSS AVDD V With respect to AVSS and AVDD
CMP_5 VHYST_00 Input Hysteresis Voltage 13 46 mV COMPCTRLn.SPEED = 0x3

COMPCTRLn.HYSTEN = 0x1

COMPCTRLn.HYST = 0x0

5 40 mV COMPCTRLn.SPEED = 0x0

COMPCTRLn.HYSTEN = 0x1

COMPCTRLn.HYST = 0x0

VHYST_01 Input Hysteresis Voltage 30 71 mV COMPCTRLn.SPEED = 0x3

COMPCTRLn.HYSTEN = 0x1

COMPCTRLn.HYST = 0x1

20 59 mV COMPCTRLn.SPEED = 0x0

COMPCTRLn.HYSTEN = 0x1

COMPCTRLn.HYST = 0x1

VHYST_02 Input Hysteresis Voltage 39 101 mV COMPCTRLn.SPEED = 0x3

COMPCTRLn.HYSTEN = 0x1

COMPCTRLn.HYST = 0x2

33 84 mV COMPCTRLn.SPEED = 0x0

COMPCTRLn.HYSTEN = 0x1

COMPCTRLn.HYST = 0x2

VHYST_03 Input Hysteresis Voltage 64 132 mV COMPCTRLn.SPEED = 0x3

COMPCTRLn.HYSTEN = 0x1

COMPCTRLn.HYST = 0x3

46 110 mV COMPCTRLn.SPEED = 0x0

COMPCTRLn.HYSTEN = 0x1

COMPCTRLn.HYST = 0x3

CMP_15 TRESPSS (2) Small Signal Response Time - High speed 39 ns COMPCTRLn.SPEED = 0x3

COMPCTRLn.HYSTEN = 0x0

Comparator ref voltage = AVDD/2.

Input overdrive = +/- 100mV

Small Signal Response Time - Low Speed 92 ns COMPCTRLn.SPEED = 0x0

COMPCTRLn.HYSTEN = 0x0

Comparator ref voltage = AVDD/2.

Input overdrive = +/- 100mV

CMP_19 COUTVAL Comparator Enabled to Output Valid - High Speed 7 ms Comparator module is configured before enabling it

COMPCTRLn.SPEED = 0x3

Comparator Enabled to Output Valid - Low Speed 13.5 ms Comparator module is configured before enabling it

COMPCTRLn.SPEED = 0x0

CMP_21 ACIREF Comparator Internal Band Gap Voltage Reference VR_9 V VR_9: Refer to Internal Voltage Reference Specifications.
CMP_23 CVREFRNG Comparator Voltage Reference Input Range -2 AVDD - 0.2V or Note (1), whichever is lower V -
CMP_25 FGCLK_AC Analog comparator peripheral module clock freq FCLK_49 MHz FCLK_49: Refer to Maximum Clock Frequencies Electrical Specifications
Note:
  1. Comparator Ref voltage cannot exceed: (VIN(max) - VIOFF(max) - CMP_5(max) - 50mV) ≥ CVREFRNG ≥ (VIN(min) + abs(VIOFF(min)) + CMP_5(max) + 50mV).
  2. TRESPSS is measured from VIN transition to ACOUT toggle (AC direct output accessible by setting COMPCTRLn.OUT[1:0]=0x1). It takes into account only analog propagation delay.