Datasheet

 2009-2012 Microchip Technology Inc. DS70593D-page 313
dsPIC33FJXXXGPX06A/X08A/X10A
TABLE 25-42: ADC MODULE SPECIFICATIONS (12-BIT MODE)
(2)
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V 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
ADC Accuracy (12-bit Mode) - Measurements with external V
REF+/VREF-
AD20a Nr Resolution 12 data bits bits
AD21a INL Integral Nonlinearity -2 — +2 LSb VINL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD22a DNL Differential Nonlinearity >-1 — <1 LSb VINL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD23a G
ERR Gain Error — 3.4 10 LSb VINL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD24a EOFF Offset Error — 0.9 5 LSb VINL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD25a — Monotonicity
(1)
— — — — Guaranteed
ADC Accuracy (12-bit Mode) - Measurements with internal VREF+/VREF-
AD20a Nr Resolution 12 data bits bits
AD21a INL Integral Nonlinearity -2 — +2 LSb V
INL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD22a DNL Differential Nonlinearity >-1 — <1 LSb V
INL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD23a GERR Gain Error — 10.5 20 LSb VINL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD24a EOFF Offset Error — 3.8 10 LSb VINL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD25a — Monotonicity
(1)
— — — — Guaranteed
Dynamic Performance (12-bit Mode)
AD30a THD Total Harmonic Distortion — — -75 dB —
AD31a SINAD Signal to Noise and
Distortion
68.5 69.5 — dB —
AD32a SFDR Spurious Free Dynamic
Range
80 — — dB —
AD33a F
NYQ Input Signal Band-Width — — 250 kHz —
AD34a ENOB Effective Number of Bits 11.09 11.3 — bits —
Note 1: The ADC conversion result never decreases with an increase in the input voltage, and has no missing
codes.
2: Injection currents > | 0 | can affect the ADC results by approximately 4-6 counts.