
PIC16F87XA
DS39582A-page 192
Advance Information
2001 Microchip Technology Inc.
TABLE 17-14: A/D CONVERTER CHARACTERISTICS:PIC16F873A/874A/876A/877A (INDUSTRIAL)
PIC16LF873A/874A/876A/877A (INDUSTRIAL)
Param
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
A01
N
R
Resolution
—
—
10-bits
bit
V
REF
= V
DD
= 5.12V,
V
SS
≤
V
AIN
≤
V
REF
A03
E
IL
Integral linearity error
—
—
< ± 1
LSb
V
REF
= V
DD
= 5.12V,
V
SS
≤
V
AIN
≤
V
REF
A04
E
DL
Differential linearity error
—
—
< ± 1
LSb
V
REF
= V
DD
= 5.12V,
V
SS
≤
V
AIN
≤
V
REF
A06
E
OFF
Offset error
—
—
< ± 2
LSb
V
REF
= V
DD
= 5.12V,
V
SS
≤
V
AIN
≤
V
REF
A07
E
GN
Gain error
—
—
< ± 1
LSb
V
REF
= V
DD
= 5.12V,
V
SS
≤
V
AIN
≤
V
REF
A10
—
Monotonicity
—
guaranteed
(3)
—
—
V
SS
≤
V
AIN
≤
V
REF
A20
V
REF
Reference voltage (V
REF
+ - V
REF
-)
2.0
—
V
DD
+ 0.3
V
Absolute minimum electrical
spec. To ensure 10-bit
accuracy.
A21
V
REF
+ Reference voltage High
AV
DD
- 2.5V
AV
DD
+ 0.3V
V
A22
V
REF
-
Reference voltage Low
AV
SS
- 0.3V
V
REF
+ - 2.0V
V
A25
V
AIN
Analog input voltage
V
SS
- 0.3 V
—
V
REF
+ 0.3 V
V
A30
Z
AIN
Recommended impedance of
analog voltage source
—
—
10.0
k
A40
I
AD
A/D conversion
current (V
DD
)
Standard
—
220
—
μ
A
μ
A
μ
A
Average current consumption
when A/D is on
(Note 1)
Extended
—
90
—
A50
I
REF
V
REF
input current
(Note 2)
10
—
—
—
1000
10
μ
A
During V
AIN
acquisition.
Based on differential of
V
HOLD
to V
AIN
to charge
C
HOLD
, see Section 11.1.
During A/D Conversion cycle
*
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
REF
current is from RA3 pin or V
DD
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.