Datasheet

PIC16F870/871
DS30569C-page 134  2000-2013 Microchip Technology Inc.
TABLE 14-9: PIC16F870/871 (INDUSTRIAL)
PIC16LF870/871 (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 — —
< ± 1 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-) 2.0V — VDD + 0.3 V
A21 V
REF+ Reference voltage High VDD – 2.5V VDD + 0.3V V Must meet spec. A20
A22 V
REF- Reference voltage Low VSS – 0.3V VREF+ – 2.0V V Must meet spec. A20
A25 V
AIN Analog input voltage VSS – 0.3 — VREF + 0.3 V
A30 Z
AIN Recommended impedance of
analog voltage source
——10.0k
A40 I
AD A/D conversion
current (V
DD)
Standard(F) — 220 — A Average current consumption
when A/D is on (Note 1).
Extended(LF)— 90 — A
A50 I
REF VREF input current (Note 2) 10
—
—
—
1000
10
A
A
During VAIN acquisition.
Based on differential of V
HOLD
to V
AIN to charge CHOLD, see
Section 10.1.
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.