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PIC16F87XATI/SP Datasheet - Page 194

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PIC16F87XA
TABLE 17-14: A/D CONVERTER CHARACTERISTICS:PIC16F873A/874A/876A/877A (INDUSTRIAL)
Param
Sym
Characteristic
No.
A01
N
Resolution
R
A03
E
Integral Linearity Error
IL
A04
E
Differential Linearity Error
DL
A06
E
Offset Error
OFF
A07
E
Gain Error
GN
A10
Monotonicity
A20
V
Reference Voltage (V
+ – V
REF
REF
A21
V
+ Reference Voltage High
REF
A22
V
- Reference Voltage Low
REF
A25
V
Analog Input Voltage
AIN
A30
Z
Recommended Impedance of
AIN
Analog Voltage Source
A40
I
A/D Conversion
PIC16F87XA
AD
Current (V
)
DD
PIC16LF87XA
A50
I
V
Input Current (Note 2)
REF
REF
*
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.
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
current is from RA3 pin or V
REF
3:
The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
4:
Maximum allowed impedance for analog voltage source is 10 kThis requires higher acquisition time.
DS39582C-page 194
PIC16LF873A/874A/876A/877A (INDUSTRIAL)
Min
Typ†
Max
10-bits
< ± 1
< ± 1
< ± 2
< ± 1
(3)
guaranteed
-)
2.0
V
REF
DD
AV
– 2.5V
AV
DD
DD
AV
– 0.3V
V
+ – 2.0V
SS
REF
V
– 0.3V
V
SS
REF
2.5
220
90
5
150
pin, whichever is selected as reference input.
DD
Units
Conditions
bit
V
= V
= 5.12V,
REF
DD
 V
 V
V
SS
AIN
REF
LSb
V
= V
= 5.12V,
REF
DD
 V
 V
V
SS
AIN
REF
LSb
V
= V
= 5.12V,
REF
DD
 V
 V
V
SS
AIN
REF
LSb
V
= V
= 5.12V,
REF
DD
 V
 V
V
SS
AIN
REF
LSb
V
= V
= 5.12V,
REF
DD
 V
 V
V
SS
AIN
REF
 V
 V
V
SS
AIN
REF
+ 0.3
V
+ 0.3V
V
V
+ 0.3V
V
k
(Note 4)
A
Average current
consumption when A/D is
A
on (Note 1)
A
During V
acquisition.
AIN
Based on differential of
V
to V
to charge
HOLD
AIN
C
, see Section 11.1
HOLD
“A/D Acquisition
Requirements”.
A
During A/D conversion
cycle
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