Datasheet

PIC16F87X
DS30292C-page 174  2001 Microchip Technology Inc.
TABLE 15-12: PIC16F87X-04 (COMMERCIAL, INDUSTRIAL, EXTENDED)
PIC16F87X-10 (EXTENDED)
PIC16F87X-20 (COMMERCIAL, INDUSTRIAL)
PIC16LF87X-04 (COMMERCIAL, INDUSTRIAL)
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
A01 N
R Resolution ——10-bits bit 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
A06 EOFF Offset error ——< ± 2 LSb VREF = VDD = 5.12V,
V
SS ≤ VAIN ≤ VREF
A07 EGN Gain error ——< ± 1 LSb VREF = VDD = 5.12V,
V
SS ≤ VAIN ≤ VREF
A10 — Monotonicity
(3)
— guaranteed ——VSS ≤ VAIN ≤ VREF
A20 VREF Reference voltage (VREF+ - VREF-) 2.0 — VDD + 0.3 V Absolute minimum electrical
spec. To ensure 10-bit
accuracy.
A21 V
REF+ Reference voltage High AVDD - 2.5V AVDD + 0.3V V
A22 V
REF- Reference voltage low AVSS - 0.3V VREF+ - 2.0V V
A25 V
AIN Analog input voltage VSS - 0.3 V — VREF + 0.3 V V
A30 Z
AIN Recommended impedance of
analog voltage source
——10.0 kΩ
A40 I
AD A/D conversion
current (V
DD)
Standard — 220 — µA Average current consumption
when A/D is on (Note 1)
Extended — 90 — µA
A50 I
REF VREF input current (Note 2) 10
—
—
—
1000
10
µA
µA
During VAIN acquisition.
Based on differential of V
HOLD
to V
AIN to charge CHOLD, see
Section 11.1.
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 RA3 pin 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.