PIC17C7XX Datasheet, PDF (260/328 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
TABLE 20-19: A/D CONVERTER CHARACTERISTICS
Param.
No. Sym Characteristic
Min
Typ†
Max Units
Conditions
A01
NR Resolution
—
—
10
bit VREF+ = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF+
A02 ^{EABS Absolute error}
—
—
10*
bit (VREF+ — VREF-) ≥ 3.0V,
VREF- ≤ VAIN ≤ VREF+
—
—
< ±1 LSb VREF+ = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF+
A03
EIL Integral linearity error
—
—
< ±1* LSb (VREF+ — VREF-) ≥ 3.0V,
VREF- ≤ VAIN ≤ VREF+
—
—
< ±1 LSb VREF+ = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF+
A04
EDL Differential linearity error
—
—
< ±1* LSb (VREF+ — VREF-) ≥ 3.0V,
VREF- ≤ VAIN ≤ VREF+
—
—
< ±1 LSb VREF+ = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF+
A05
EFS Full scale error
—
—
< ±1* LSb (VREF+ — VREF-) ≥ 3.0V,
VREF- ≤ VAIN ≤ VREF+
—
—
< ±1 LSb VREF+ = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF+
A06 ^{EOFF Offset error}
A10
— Monotonicity
A20
A20A
VREF Reference voltage
(VREF+ — VREF-)
—
—
< ±1* LSb (VREF+ — VREF-) ≥ 3.0V,
VREF- ≤ VAIN ≤ VREF+
—
—
< ±1 LSb VREF+ = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF+
—
—
< ±1* ^LSb (VREF+ — VREF-) ≥ 3.0V,
VREF- ≤ VAIN ≤ VREF+
— guaran- —
teed
— VSS ≤ VAIN ≤ VREF
0V
—
—
V VREF delta when changing voltage lev-
els on VREF inputs.
3V *
—
—
V Absolute minimum electrical spec.
To ensure 10-bit accuracy
A21 ^{VREF+ Reference voltage High}
AVSS
—
AVDD + V
+ 3.0V
0.3V
A22 ^{VREF- Reference voltage Low}
AVSS
—
AVDD - V
- 0.3V
3.0V
A25 ^{VAIN Analog input voltage}
AVSS
—
VREF + V
- 0.3V
0.3V
A30 ^{ZAIN Recommended impedance of}
—
—
10.0 kΩ
analog voltage source
A40
IAD A/D conversion PIC17CXXX —
180
current (VDD) _{PIC17LCXXX —}
90
—
µA Average current consumption when
—
µA ^{A/D is on. (Note 1)}
A50
IREF VREF input current (Note 2)
10
—
1000 µA During VAIN acquisition.
Based on differential of VHOLD to VAIN.
—
—
10
µA During A/D conversion cycle
*
†
Note 1:
2:
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.
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.
VREF current is from RG0 and RG1 pins or AVDD and AVSS pins, whichever is selected as reference input.
DS30289A-page 260
Preliminary
© 1998 Microchip Technology Inc.