
2000 Microchip Technology Inc.
Preliminary
DS41124C-page 141
PIC16C745/765
TABLE 16-10: A/D CONVERTER CHARACTERISTICS: PIC16C745/765 (INDUSTRIAL)
Param
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
A01
NR
Resolution
——
8 bits
bit
A02
EABS
Total Absolute error
——
< ± 1
LSb
VREF = VDD = 5.12V,
VSS
≤ VAIN ≤ VREF
A03
EIL
Integral linearity error
——
< ± 1
LSb
VREF = VDD = 5.12V,
VSS
≤ VAIN ≤ VREF
A04
EDL
Differential linearity error
——
< ± 1
LSb
VREF = VDD = 5.12V,
VSS
≤ VAIN ≤ VREF
A05
EFS
Full scale error
——
< ± 1
LSb
VREF = VDD = 5.12V,
VSS
≤ VAIN ≤ VREF
A06
EOFF
Offset error
——
< ± 1
LSb
VREF = VDD = 5.12V,
VSS
≤ VAIN ≤ VREF
A10
—
Monotonicity (Note 3)
—
warranteed
——
VSS
≤ VAIN ≤ VREF
A20
VREF
Reference voltage
2.5V
—
VDD + 0.3
V
A25
VAIN
Analog input voltage
VSS - 0.3
—
VREF + 0.3
V
A30
ZAIN
Recommended impedance of
analog voltage source
——
10.0
k
A40
IAD
A/D conversion current (VDD)
—
180
—
A
Average current consump-
tion when A/D is on (Note 1)
A50
IREF
VREF input current (Note 2)
10
—
1000
10
A
During VAIN acquisition.
Based on differential of
VHOLD to VAIN to charge
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:
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.
745cov.book Page 141 Wednesday, August 2, 2000 8:24 AM