Datasheet

 1998-2013 Microchip Technology Inc. DS30289C-page 263
PIC17C7XX
TABLE 20-18: A/D CONVERTER CHARACTERISTICS
Param.
No.
Sym Characteristic Min Typ† Max Units Conditions
A01 N
R Resolution — — 10 bit VREF+ = VDD = 5.12V,
V
SS  VAIN  VREF+
— — 10 bit (V
REF+ — VREF-)  3.0V,
V
REF-  VAIN  VREF+
A02 E
ABS Absolute error — — < 1LSbVREF+ = VDD = 5.12V,
V
SS  VAIN  VREF+
——< 1LSb(V
REF+ — VREF-)  3.0V,
V
REF-  VAIN  VREF+
A03 E
IL Integral linearity error — — < 1LSbVREF+ = VDD = 5.12V,
V
SS  VAIN  VREF+
——< 1LSb(V
REF+ — VREF-)  3.0V,
V
REF-  VAIN  VREF+
A04 E
DL Differential linearity error — — < 1LSbVREF+ = VDD = 5.12V,
V
SS  VAIN  VREF+
——< 1LSb(V
REF+ — VREF-)  3.0V,
V
REF-  VAIN  VREF+
A05 E
FS Full scale error — — < 1LSbVREF+ = VDD = 5.12V,
V
SS  VAIN  VREF+
——< 1LSb(V
REF+ — VREF-)  3.0V,
V
REF-  VAIN  VREF+
A06 E
OFF Offset error — — < 1LSbVREF+ = VDD = 5.12V,
V
SS  VAIN  VREF+
——< 1LSb(V
REF+ — VREF-)  3.0V,
V
REF-  VAIN  VREF+
A10 — Monotonicity — guaranteed
(3)
——VSS  VAIN  VREF
A20 VREF Reference voltage
(V
REF+ — VREF-)
0V — — V V
REF delta when changing voltage
levels on V
REF inputs
A20A 3V — — V Absolute minimum electrical spec.
to ensure 10-bit accuracy
A21 V
REF+ Reference voltage high AVSS
+ 3.0V
—AVDD +
0.3V
V
A22 V
REF- Reference voltage low Avss -
0.3V
—AVDD -
3.0V
V
A25 V
AIN Analog input voltage AVSS -
0.3V
—Vref +
0.3V
V
A30 Z
AIN Recommended impedance of
analog voltage source
— — 10.0 k
A40 I
AD A/D conversion
current (V
DD)
PIC17CXXX — 180 — A Average current consumption when
A/D is on (Note 1)
PIC17LCXXX — 90 — A
A50 I
REF VREF input current (Note 2) 10 — 1000 A During VAIN acquisition.
Based on differential of V
HOLD to
V
AIN
—— 10A During A/D conversion cycle
† Data in “Typ” column is at 5V, 25C unless otherwise stated.
Note 1: When A/D is off, it will not consume any current other than minor leakage current. The power-down current spec includes
any such leakage from the A/D module.
2: V
REF current is from RG0 and RG1 pins or AVDD and AVSS pins, 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.