Datasheet

TMS570LS20216, TMS570LS20206, TMS570LS10216
TMS570LS10206, TMS570LS10116, TMS570LS10106
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SPNS141FAUGUST 2010 REVISED JULY 2011
7.18.3 Operating Characteristics Over Full Ranges Of Recommended Operating Conditions
Table 7-29. Operating Characteristics Over Full Ranges Of Recommended Operating Conditions
(1)
Parameter Description/Conditions Min TYP Max Unit
R
mux
Analog input mux 250 Ω
on-resistance
R
samp
ADC sample switch 150 250 Ω
on-resistance
C
mux
Input mux capacitance 16 pF
C
samp
ADC sample capacitance 11 12 13 pF
I
AIL
Analog input leakage Input leakage per ADC input pin 200 200 nA
current
I
ADREFHI
AD
REFHI
input current AD
REFHI
= 3.6 V, AD
REFLO
= V
SSAD
5 mA
CR Conversion range over AD
REFHI
- AD
REFLO
3 3.6 V
which specified accuracy
is maintained
E
DNL
Differential nonlinearity Difference between the actual step width and the ideal value. ±2 LSB
error
E
INL
Integral nonlinearity error Maximum deviation from the best straight line through the MibADC. ± 2 LSB
MibADC transfer characteristics, excluding the quantization error.
E
TOT
Total error/Absolute Maximum value of the difference Executing periodic ± 4
(2)
LSB
accuracy between an analog value and the ideal internal calibration
midstep value.
No calibration ± 8 LSB
(1) 1 LSB = (AD
REFHI
AD
REFLO
)/ 2
12
for the MibADC
(2) An periodic internal offset calibration is required to achieve the absolute accuracy. Please refer to the Analog To Digital Converter (ADC)
Module chapter of the TMS570LS Series Microcontroller Technical Reference Manual (SPNU489) and Interfacing the Embedded 12-bit
ADC (SPNA129) for more information.
Copyright © 20102011, Texas Instruments Incorporated Peripheral and Electrical Specifications 95
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