Datasheet

PIC24FJ256GA110 FAMILY
DS39905E-page 286  2010 Microchip Technology Inc.
TABLE 28-19: ADC MODULE SPECIFICATIONS
AC CHARACTERISTICS
Standard Operating Conditions: 2.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  T
A  +85°C for Industrial
-40°C  T
A  +125°C for Extended
Param
No.
Symbol Characteristic Min. Typ Max. Units Conditions
Device Supply
AD01 AV
DD Module VDD Supply Greater of
V
DD – 0.3
or 2.0
—Lesser of
V
DD + 0.3
or 3.6
V
AD02 AV
SS Module VSS Supply VSS – 0.3 — VSS + 0.3 V
Reference Inputs
AD05 V
REFH Reference Voltage High AVSS + 1.7 — AVDD V
AD06 V
REFL Reference Voltage Low AVSS —AVDD – 1.7 V
AD07 V
REF Absolute Reference
Voltage
AVSS – 0.3 — AVDD + 0.3 V
AD08 IV
REF Reference Voltage Input
Current
——1.25mA(Note 3)
AD09 ZV
REF Reference Input
Impedance
—10K—  (Note 4)
Analog Input
AD10 V
INH-VINL Full-Scale Input Span VREFL —VREFH V (Note 2)
AD11 V
IN Absolute Input Voltage AVSS – 0.3 — AVDD + 0.3 V
AD12 VINL Absolute VINL Input
Voltage
AVSS – 0.3 AVDD/2 V
AD17 R
IN Recommended Impedance
of Analog Voltage Source
— — 2.5K  10-bit
ADC Accuracy
AD20b N
R Resolution — 10 — bits
AD21b INL Integral Nonlinearity — ±1 <±2 LSb VINL = AVSS = VREFL = 0V,
AV
DD = VREFH = 3V
AD22b DNL Differential Nonlinearity — ±0.5 <±1 LSb V
INL = AVSS = VREFL = 0V,
AV
DD = VREFH = 3V
AD23b GERR Gain Error — ±1 ±3 LSb VINL = AVSS = VREFL = 0V,
AV
DD = VREFH = 3V
AD24b EOFF Offset Error — ±1 ±2 LSb VINL = AVSS = VREFL = 0V,
AV
DD = VREFH = 3V
AD25b — Monotonicity
(1)
— — — — Guaranteed
Note 1: The ADC conversion result never decreases with an increase in the input voltage and has no missing codes.
2: Measurements taken with external VREF+ and VREF- are used as the ADC voltage reference.
3: External reference voltage applied to V
REF+/- pins. IVREF is current during conversion at 3.3V, 25°C.
Parameter is for design guidance only and is not tested.
4: Impedance during sampling is at 3.3V, 25°C. Parameter is for design guidance only and is not tested.