Datasheet

dsPIC33FJXXXGPX06/X08/X10
DS70286C-page 290 © 2009 Microchip Technology Inc.
TABLE 25-38: ADC MODULE SPECIFICATIONS (12-BIT MODE)
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
Param
No.
Symbol Characteristic Min. Typ Max. Units Conditions
ADC Accuracy (12-bit Mode) - Measurements with external VREF+/VREF-
AD20a Nr Resolution 12 data bits bits
AD21a INL Integral Nonlinearity -2 — +2 LSb V
INL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD22a DNL Differential Nonlinearity >-1 — <1 LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD23a G
ERR Gain Error 1.25 1.5 3 LSb VINL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD24a E
OFF Offset Error 1.25 1.52 2 LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD25a — Monotonicity
(1)
— — — — Guaranteed
ADC Accuracy (12-bit Mode) - Measurements with internal V
REF+/VREF-
AD20a Nr Resolution 12 data bits bits
AD21a INL Integral Nonlinearity -2 — +2 LSb V
INL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD22a DNL Differential Nonlinearity >-1 — <1 LSb V
INL = AVSS = VREFL =
0V, AV
DD = VREFH = 3.6V
AD23a G
ERR Gain Error 2 3 7 LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD24a EOFF Offset Error 2 3 5 LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD25a — Monotonicity
(1)
— — — — Guaranteed
Dynamic Performance (12-bit Mode)
AD30a THD Total Harmonic Distortion -77 -69 -61 dB —
AD31a SINAD Signal to Noise and
Distortion
59 63 64 dB —
AD32a SFDR Spurious Free Dynamic
Range
63 72 74 dB —
AD33a F
NYQ Input Signal Band-Width — — 250 kHz —
AD34a ENOB Effective Number of Bits 10.95 11.1 — bits —
Note 1: The ADC conversion result never decreases with an increase in the input voltage, and has no missing
codes.