Datasheet

 2009-2016 Microchip Technology Inc. DS40001365F-page 349
PIC18(L)F1XK22
TABLE 26-21: COMPARATOR SPECIFICATIONS
Standard Operating Conditions (unless otherwise stated)
Param.
No.
Sym. Characteristics Min. Typ. Max. Units Comments
CM01 V
IOFF Input Offset Voltage — 10 50 mV VREF = VDD/2,
High-Power mode
—12 80mVV
REF = VDD/2,
Low-Power mode
CM02 V
ICM Input Common-mode Voltage VSS —VDD V
CM04 T
RESP Response Time — 200 400 ns High-Power mode
— 300 600 ns Low-Power mode
CM05 TMC2OV Comparator Mode Change to
Output Valid*
—— 10s
* These parameters are characterized but not tested.
Note 1: Response time measured with one comparator input at V
DD/2, while the other input transitions from VSS
to V
DD.
TABLE 26-22: DIGITAL-TO-ANALOG CONVERTER (DAC) SPECIFICATIONS
Standard Operating Conditions (unless otherwise stated)
Param.
No.
Sym. Characteristics Min. Typ. Max. Units Comments
DAC01* C
LSB Step Size — VDD/32 — V
DAC02* CACC Absolute Accuracy — —  1/2 LSb
DAC03* CR Unit Resistor Value (R) — 5k — 
DAC04* C
ST Settling Time
(1)
——10s
* These parameters are characterized but not tested.
Note 1: Settling time measured while DACR<4:0> transitions from ‘0000’ to ‘1111’.
TABLE 26-23: FIXED VOLTAGE REFERENCE (FVR) SPECIFICATIONS
VR Voltage Reference Specifications Standard Operating Conditions (unless otherwise stated)
Param.
No.
Sym. Characteristics Min. Typ. Max. Units Comments
D003 VADFVR Fixed Voltage Reference Voltage for
ADC, Initial Accuracy
-8 — 6 % 1.024V, VDD  2.5V
(1)
2.048V, VDD  2.5V
4.096V, V
DD  4.75V
D003A V
CDAFVR Fixed Voltage Reference Voltage for
Comparator and DAC, Initial Accuracy
-11 — 7 % 1.024V, VDD  2.5V
2.048V, V
DD  2.5V
4.096V, V
DD  4.75V
D004* S
VDD VDD Rise Rate to ensure internal
Power-on Reset signal
0.05 — — V/ms See Section 22.3 “Power-on
Reset (POR)” for details.
* These parameters are characterized but not tested.
Note 1: For proper operation, the minimum value of the ADC positive voltage reference must be 1.8V or greater.
When selecting the FVR or the V
REF+ pin as the source of the ADC positive voltage reference, be aware
that the voltage must be 1.8V or greater.