Datasheet

© 2007 Microchip Technology Inc. DS41190E-page 99
PIC12F629/675
TABLE 12-8: PIC12F675 A/D CONVERTER CHARACTERISTICS:
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
A01 NR Resolution — — 10 bits bit
A02 EABS Total Absolute
Error*
— — ±1 LSb VREF = 5.0V
A03 EIL Integral Error — — ±1 LSb VREF = 5.0V
A04 EDL Differential Error — — ±1 LSb No missing codes to 10 bits
VREF = 5.0V
A05 EFS Full Scale Range 2.2* — 5.5* V
A06 EOFF Offset Error — — ±1 LSb VREF = 5.0V
A07 EGN Gain Error — — ±1 LSb VREF = 5.0V
A10 — Monotonicity —
guaranteed
(3)
— — VSS ≤ VAIN ≤ VREF+
A20
A20A
VREF Reference Voltage 2.0
2.5
— —
VDD + 0.3
V
Absolute minimum to ensure 10-bit
accuracy
A21 VREF Reference V High
(VDD or VREF)
VSS — VDD V
A25 VAIN Analog Input
Voltage
VSS — VREF V
A30 ZAIN Recommended
Impedance of
Analog Voltage
Source
— — 10 kΩ
A50 IREF VREF Input
Current
(2)
10
—
—
—
1000
10
μA
μA
During VAIN acquisition.
Based on differential of V
HOLD to VAIN.
During A/D conversion cycle.
* These parameters are characterized but not tested.
† Data in ‘Typ’ column is at 5.0V, 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 leakage current. The power-down current spec
includes any such leakage from the A/D module.
2: VREF current is from External VREF or VDD 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.