Information

 2010 Microchip Technology Inc. DS41303G-page 381
PIC18F2XK20/4XK20
26.11 Analog Characteristics
TABLE 26-1: COMPARATOR SPECIFICATIONS
TABLE 26-2: CV
REF VOLTAGE REFERENCE SPECIFICATIONS
TABLE 26-3: FIXED VOLTAGE REFERENCE (FVR) SPECIFICATIONS
Operating Conditions: 1.8V < VDD < 3.6V, -40°C < TA < +125°C (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
—1280mVV
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 V
SS to VDD.
Operating Conditions: 1.8V < VDD < 3.6V, -40°C < TA < +125°C (unless otherwise stated).
Param
No.
Sym Characteristics Min Typ Max Units Comments
CV01* C
LSB Step Size
(2)
—
—
VDD/24
V
DD/32
—
—
V
V
Low Range (VRR = 1)
High Range (VRR = 0)
CV02* C
ACC Absolute Accuracy — — 1/2 LSb
CV03* CR Unit Resistor Value (R) — 3k — 
CV04* CST Settling Time
(1)
—7.510s
* These parameters are characterized but not tested.
Note 1: Settling time measured while CVRR = 1 and CVR3:CVR0 transitions from ‘0000’ to ‘1111’.
2: See Section 21.1 “Comparator Voltage Reference” for more information.
Operating Conditions: 1.8V < VDD < 3.6V, -40°C < TA < +125°C (unless otherwise stated).
VR Voltage Reference Specifications
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C  T
A  +125°C
Param
No.
Sym Characteristics Min Typ Max Units Comments
VR01 V
ROUT VR voltage output 1.15 1.20 1.25 V -40°C to +85°C
1.10 1.20 1.30 V +85°C to +125°C
VR02* TCV
OUT Voltage drift temperature
coefficient
— <50 — ppm/C -40°C to +40°C (See
Figure 27-34)
VR03*
VROUT/
VDD
Voltage drift with respect to
V
DD regulation
— <2000 — V/V 25°C, 2.0 to 3.3V (See
Figure 27-33)
VR04* T
STABLE Settling Time — 25 100 s 0 to 125°C
* These parameters are characterized but not tested.