
PIC16(L)F722A/723A
DS41417B-page 218
2010-2012 Microchip Technology Inc.
TABLE 23-7:
PIC16F722A/723A A/D CONVERTER (ADC) CHARACTERISTICS:
TABLE 23-8:
PIC16F722A/723A A/D CONVERSION REQUIREMENTS
Standard Operating Conditions (unless otherwise stated)
Operating temperature
-40°C
TA +125°C
Param
No.
Sym.
Characteristic
Min.
Typ
Max. Units
Conditions
AD01
NR
Resolution
—
8
bit
AD02
EIL
Integral Error
—
±1.7
LSb VREF = 3.0V
AD03
EDL
Differential Error
—
±1
LSb No missing codes
VREF = 3.0V
AD04
EOFF Offset Error
—
±2.2
LSb VREF = 3.0V
AD05
EGN
Gain Error
—
±1.5
LSb VREF = 3.0V
AD06
VREF Reference Voltage(3)
1.8
—
VDD
V
AD07
VAIN
Full-Scale Range
VSS
—VREF
V
AD08
ZAIN
Recommended Impedance of
Analog Voltage Source
——
50
k
Can go higher if external 0.01F capacitor is
present on input pin.
Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Note 1: Total Absolute Error includes integral, differential, offset and gain errors.
2: The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
3: When ADC is off, it will not consume any current other than leakage current. The power-down current specification
includes any such leakage from the ADC module.
Standard Operating Conditions (unless otherwise stated)
Operating temperature
-40°C
TA +125°C
Param
No.
Sym.
Characteristic
Min.
Typ
Max.
Units
Conditions
AD130* TAD
A/D Clock Period
1.0
—
9.0
sTOSC-based
A/D Internal RC Oscillator
Period
1.0
2.0
6.0
s
ADCS<1:0> = 11 (ADRC mode)
AD131
TCNV
Conversion Time (not including
Acquisition Time)(1)
—
10.5
—
TAD
Set GO/DONE bit to conversion
complete
AD132* TACQ
Acquisition Time
—
1.0
—
s
*
These parameters are characterized but not tested.
Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Note 1: The ADRES register may be read on the following TCY cycle.