Datasheet

PIC16F7X
DS30325B-page 138  2002 Microchip Technology Inc.
TABLE 15-12: A/D CONVERTER CHARACTERISTICS: PIC16F7X (INDUSTRIAL, EXTENDED)
PIC16LF7X (INDUSTRIAL)
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
A01 N
R Resolution PIC16F7X ——8 bits bit VREF = VDD = 5.12V,
V
SS ≤ VAIN ≤ VREF
PIC16LF7X ——8 bits bit VREF = VDD = 2.2V
A02 E
ABS Total absolute error ——< ±1 LSb VREF = VDD = 5.12V,
V
SS ≤ VAIN ≤ VREF
A03 EIL Integral linearity error ——< ±1 LSb VREF = VDD = 5.12V,
V
SS ≤ VAIN ≤ VREF
A04 EDL Differential linearity error ——< ±1 LSb VREF = VDD = 5.12V,
V
SS ≤ VAIN ≤ VREF
A05 EFS Full scale error ——< ±1 LSb VREF = VDD = 5.12V,
V
SS ≤ VAIN ≤ VREF
A06 EOFF Offset error ——< ±1 LSb VREF = VDD = 5.12V,
V
SS ≤ VAIN ≤ VREF
A10 — Monotonicity (Note 3) — guaranteed ——VSS ≤ VAIN ≤ VREF
A20 VREF Reference voltage 2.5
2.2
—
—
5.5
5.5
V
V
-40°C to +125°C
0°C to +125°C
A25 V
AIN Analog input voltage VSS - 0.3 — VREF + 0.3 V
A30 Z
AIN Recommended impedance of
analog voltage source
——10.0 kΩ
A40 I
AD A/D conversion
current (V
DD)
PIC16F7X — 180 — µA Average current
consumption when A/D
is on (Note 1).
PIC16LF7X — 90 — µA
A50 I
REF VREF input current (Note 2) N/A
—
—
—
±5
500
µA
µA
During VAIN acquisition.
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 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.