DSPIC33FJXXXGPX06_09 Datasheet, PDF (292/322 Pages) Microchip Technology – High-Performance, 16-Bit Digital Signal Controllers

dsPIC33FJXXXGPX06/X08/X10
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 VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD22a DNL
Differential Nonlinearity
>-1
—
<1
LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD23a GERR
Gain Error
1.25
1.5
3
LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD24a EOFF
AD25a —
Offset Error
Monotonicity⁽¹⁾
1.25
1.52
2
LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
—
—
—
— 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 VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD22a DNL
Differential Nonlinearity
>-1
—
<1
LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD23a GERR
Gain Error
2
3
7
LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
AD24a EOFF
AD25a —
Offset Error
Monotonicity⁽¹⁾
2
3
5
LSb VINL = AVSS = VREFL =
0V, AVDD = VREFH = 3.6V
—
—
—
— Guaranteed
Dynamic Performance (12-bit Mode)
AD30a THD
Total Harmonic Distortion
-77
-69
-61
dB
—
AD31a SINAD Signal to Noise and
59
63
64
dB
—
Distortion
AD32a SFDR Spurious Free Dynamic
63
72
74
dB
—
Range
AD33a FNYQ
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.
DS70286C-page 290
© 2009 Microchip Technology Inc.