Datasheet

PIC16C7X
DS30390E-page 238  1997 Microchip Technology Inc.
Applicable Devices 72 73 73A 74 74A 76 77
TABLE 20-13: A/D CONVERTER CHARACTERISTICS:
PIC16C76/77-04 (Commercial, Industrial, Extended)
PIC16C76/77-10 (Commercial, Industrial, Extended)
PIC16C76/77-20 (Commercial, Industrial, Extended)
PIC16LC76/77-04 (Commercial, Industrial)
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
A01 NR Resolution — — 8-bits bit VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
A02 EABS Total Absolute error
——
< ± 1 LSb
VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
A03 EIL Integral linearity error — —
< ± 1 LSb
VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
A04 EDL Differential linearity error — —
< ± 1 LSb
VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
A05 EFS Full scale error — —
< ± 1 LSb
VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
A06 EOFF Offset error — —
< ± 1 LSb
VREF = VDD = 5.12V,
VSS ≤ VAIN ≤ VREF
A10 — Monotonicity — guaranteed — — VSS ≤ VAIN ≤ VREF
A20 VREF Reference voltage 3.0V — VDD + 0.3 V
A25 VAIN Analog input voltage VSS - 0.3 — VREF + 0.3 V
A30 ZAIN Recommended impedance of
analog voltage source
— — 10.0 kΩ
A40 IAD A/D conversion current
(VDD)
PIC16C76/77 — 180 — µA Average current consump-
tion when A/D is on.
(Note 1)
PIC16LC76/77 — 90 — µA
A50 IREF VREF input current (Note 2) 10
—
—
—
1000
10
µA
µA
During VAIN acquisition.
Based on differential of
VHOLD to VAIN to charge
CHOLD, see Section 13.1.
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.