Datasheet

© 2007 Microchip Technology Inc. DS40039E-page 101
PIC16F630/676
TABLE 12-8: PIC16F676 A/D CONVERTER CHARACTERISTICS:
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
A01 N
R Resolution — — 10 bits bit
A02 E
ABS Total Absolute
Error*
—— ±1LSbVREF = 5.0V
A03 EIL Integral Error — — ±1LSbVREF = 5.0V
A04 E
DL Differential Error — — ±1 LSb No missing codes to 10 bits
V
REF = 5.0V
A05 E
FS Full Scale Range 2.2* — 5.5* V
A06 E
OFF Offset Error — — ±1LSbVREF = 5.0V
A07 E
GN Gain Error — — ±1LSbVREF = 5.0V
A10 — Monotonicity —
guaranteed
(3)
——VSS ≤ VAIN ≤ VREF+
A20
A20A
V
REF Reference Voltage 2.0
2.5
——
V
DD + 0.3
V
Absolute minimum to ensure 10-bit
accuracy
A21 VREF Reference V High
(V
DD or VREF)
V
SS —VDD V
A25 V
AIN Analog Input
Voltage
VSS —VREF V
A30 Z
AIN Recommended
Impedance of
Analog Voltage
Source
—— 10kΩ
A50 I
REF VREF Input
Current
(2)
10
—
—
—
1000
10
μA
μA
During V
AIN acquisition.
Based on differential of V
HOLD to VAIN.
During A/D conversion cycle.
* These parameters are characterized but not tested.
† Data in ‘Typ’ column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance
only and are not tested.
Note 1: When A/D is off, it will not consume any current other than leakage current. The power-down current spec
includes any such leakage from the A/D module.
2: V
REF current is from External VREF or VDD pin, whichever is selected as reference input.
3: The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.