PIC18F8723 Datasheet, PDF (46/60 Pages) Microchip Technology – 64/80-Pin, 1-Mbit,Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt Technology

PIC18F8723 FAMILY
TABLE 4-1: A/D CONVERTER CHARACTERISTICS: PIC18F8723 FAMILY (INDUSTRIAL)
Param
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
A01 NR Resolution
—
—
12
bit
ΔVREF ≥ 3.0V
A03 EIL Integral Linearity Error
—
<±1
±2.0
LSB VDD = 3.0V ΔVREF ≥ 3.0V
—
—
±2.0
LSB VDD = 5.0V
A04 EDL Differential Linearity Error
—
<±1
+1.5/-1.0 LSB VDD = 3.0V ΔVREF ≥ 3.0V
—
—
+1.5/-1.0 LSB VDD = 5.0V
A06 EOFF Offset Error
—
<±1
±5
LSB VDD = 3.0V ΔVREF ≥ 3.0V
—
—
±3
LSB VDD = 5.0V
A07 EGN Gain Error
—
<±1
±1.25
LSB VDD = 3.0V ΔVREF ≥ 3.0V
A10 — Monotonicity
—
—
±2.00
Guaranteed⁽¹⁾
LSB VDD = 5.0V
—
VSS ≤ VAIN ≤ VREF
A20 ΔVREF Reference Voltage Range
3
(VREFH – VREFL)
—
VDD – VSS
V
For 12-bit resolution
A21 VREFH Reference Voltage High
VSS + 3.0V
—
VDD + 0.3V
V
For 12-bit resolution
A22 VREFL Reference Voltage Low
VSS – 0.3V
—
VDD – 3.0V
V
For 12-bit resolution
A25 VAIN Analog Input Voltage
VREFL
—
VREFH
V
A30 ZAIN Recommended
Impedance of Analog
Voltage Source
A50 IREF VREF Input Current⁽²⁾
—
—
2.5
kΩ
—
—
5
μA
—
—
150
μA
During VAIN acquisition.
During A/D conversion
cycle.
Note 1:
2:
The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
VREFH current is from the RA3/AN3/VREF+ pin or VDD, whichever is selected as the VREFH source. VREFL current is from
the RA2/AN2/VREF-/CVREF pin or VSS, whichever is selected as the VREFL source.
DS39894A-page 44
Preliminary
© 2007 Microchip Technology Inc.