Datasheet

© 2007 Microchip Technology Inc. Preliminary DS39625C-page 429
PIC18F2585/2680/4585/4680
TABLE 27-2: COMPARATOR SPECIFICATIONS
TABLE 27-3: VOLTAGE REFERENCE SPECIFICATIONS
Operating Conditions: 3.0V < VDD < 5.5V, -40°C < TA < +85°C (unless otherwise stated).
Param
No.
Sym Characteristics Min Typ Max Units Comments
D300 V
IOFF Input Offset Voltage — ± 5.0 ± 10 mV
D301 VICM Input Common Mode Voltage* 0 — VDD – 1.5 V
D302 CMRR Common Mode Rejection Ratio* 55 — — dB
300 T
RESP
Response Time
(1)*
— 150 400 ns PIC18FXXXX
300A — 150 600 ns PIC18LFXXXX,
V
DD = 2.0V
301 TMC2OV Comparator Mode Change to
Output Valid*
—— 10μs
* These parameters are characterized but not tested.
Note 1: Response time measured with one comparator input at (V
DD – 1.5)/2 while the other input transitions
from V
SS to VDD.
Operating Conditions: 3.0V < VDD < 5.5V, -40°C < TA < +85°C (unless otherwise stated).
Param
No.
Sym Characteristics Min Typ Max Units Comments
D310 V
RES Resolution VDD/24 — VDD/32 LSb
D311 VRAA Absolute Accuracy —
—
—
—
1/4
1/2
LSb
LSb
Low Range (CVRR = 1)
High Range (CVRR = 0)
D312 VR
UR Unit Resistor Value (R)* — 2k — Ω
310 TSET
Settling Time
(1)*
— — 10 μs
* These parameters are characterized but not tested.
Note 1: Settling time measured while CVRR = 1 and CVR3:CVR0 transitions from ‘0000’ to ‘1111’.