Datasheet

PIC16F631/677/685/687/689/690
DS41262E-page 248 © 2008 Microchip Technology Inc.
TABLE 17-7: COMPARATOR SPECIFICATIONS
TABLE 17-8: COMPARATOR VOLTAGE REFERENCE (CV
REF) SPECIFICATIONS
TABLE 17-9: VOLTAGE (VR) REFERENCE SPECIFICATIONS
Comparator Specifications
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +125°C
Param.
No.
Sym. Characteristics Min. Typ. Max. Units Comments
CM01 V
OS Input Offset Voltage — ± 5.0 ± 10 mV
CM02 V
CM Input Common Mode Voltage 0 — VDD - 1.5 V
CM03* C
MRR Common Mode Rejection Ratio +55 — — db
CM04* T
RT Response Time Falling — 150 600 ns (Note 1)
Rising — 200 1000 ns
CM05* T
MC2COV Comparator Mode Change to Output
Valid
—— 10 μs
* These parameters are characterized but not tested.
Note 1: Response time is measured with one comparator input at (V
DD - 1.5)/2 - 100 mV to (VDD - 1.5)/2 + 20 mV.
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +125°C
Param
No.
Sym. Characteristics Min. Typ† Max. Units Comments
CV01* CLSB Step Size
(2)
—
—
VDD/24
V
DD/32
—
—
V
V
Low Range (VRR = 1)
High Range (VRR = 0)
CV02* CACC Absolute Accuracy —
—
—
—
± 1/2
± 1/2
LSb
LSb
Low Range (VRR = 1)
High Range (VRR = 0)
CV03* C
R Unit Resistor Value (R) — 2k — Ω
CV04* CST Settling Time
(1)
——10μs
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design
guidance only and are not tested.
Note 1: Settling time measured while VRR = 1 and VR<3:0> transitions from ‘0000’ to ‘1111’.
2: See Section 8.10 “Comparator Voltage Reference” for more information.
VR Voltage Reference Specifications
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +125°C
Param
No.
Symbol Characteristics Min. Typ. Max. Units Comments
VR01 V
ROUT VR voltage output 0.5 0.6 0.7 V
VR02* T
STABLE Settling Time — 10 100* μs
* These parameters are characterized but not tested.