PIC16C745/765
TABLE 16-10: A/D CONVERTER CHARACTERISTICS:
PIC16C745/765 (COMMERCIAL, INDUSTRIAL)
Param
Sym Characteristic
NR Resolution
EABS Total Absolute error
Min
Typ†
Max
8 bits
Units Conditions
No.
A01
A02
—
—
—
—
bit
< ± 1
< ± 1
< ± 1
< ± 1
< ± 1
LSb VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
A03
A04
A05
A06
EIL
Integral linearity error
Differential linearity error
Full scale error
—
—
—
—
—
—
—
—
—
LSb VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
EDL
EFS
LSb VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
LSb VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
EOFF Offset error
LSb VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
A10
A20
A25
A30
—
Monotonicity (Note 3)
guaranteed
—
—
V
VSS ≤ VAIN ≤ VREF
VREF Reference voltage
2.5V
VSS - 0.3
—
—
—
—
VDD + 0.3
VREF + 0.3
10.0
VAIN
ZAIN
Analog input voltage
V
Recommended impedance of
analog voltage source
kΩ
A40
A50
IAD
A/D conversion current (VDD)
—
—
10
180
90
—
—
µA Average current consump-
tion when A/D is on. (Note 1)
µA
IREF
VREF input current (Note 2)
—
1000
µA During VAIN acquisition.
Based on differential of
VHOLD to VAIN to charge
CHOLD, see Section 12.1.
During A/D Conversion cycle
µA
—
—
10
*
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: VREF current is from the RA3 pin or the VDD pin, whichever is selected as a reference input.
3: The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
DS41124A-page 138
Advanced Information
1999 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
