LM3S5G31 Datasheet, PDF (1162/1223 Pages) Texas Instruments – Stellaris LM3S5G31 Microcontroller

Electrical Characteristics
25.14
Analog-to-Digital Converter (ADC)
Table 25-26. ADC Characteristics^a
Parameter Parameter Name
Min
Nom
Max
Unit
Maximum single-ended, full-scale analog input voltage,
-
-
3.0
V
using internal reference
Maximum single-ended, full-scale analog input voltage,
-
-
V_REFA
V
using external reference
Minimum single-ended, full-scale analog input voltage 0.0
-
-
V
V_{ADCIN Maximum differential, full-scale analog input voltage,}
-
-
1.5
V
using internal reference
Maximum differential, full-scale analog input voltage,
-
-
V_REFA/2
V
using external reference
Minimum differential, full-scale analog input voltage
0.0
-
-
V
N
F_ADC
T_ADCCONV
F_ADCCONV
T_ADCSAMP
T_LT
I_L
R_ADC
C_ADC
E_L
Resolution
ADC internal clock frequency^b
Conversion time^c
Conversion rate^c
Sample time
Latency from trigger to start of conversion
ADC input leakage
ADC equivalent resistance
ADC equivalent capacitance
Integral nonlinearity (INL) error, 12-bit mode
Integral nonlinearity (INL) error, 10-bit mode
15.9952
125
-
-
-
0.9
-
-
12
16
1
1000
-
2
-
-
1.0
-
-
16.0048
-
-
2.0
10
1.1
±8
±2
bits
MHz
µs
k samples/s
ns
system clocks
µA
kΩ
pF
LSB
LSB
Differential nonlinearity (DNL) error, 12-bit mode
-
-
±4
LSB
E_D
Differential nonlinearity (DNL) error, 10-bit mode
-
-
±2
LSB
Offset error, 12-bit mode
E_O
Offset error, 10-bit mode
-
-
±40
LSB
-
-
±10
LSB
Full-scale gain error, 12-bit mode
E_G
Full-scale gain error, 10-bit mode
-
-
±100
LSB
-
-
±25
LSB
E_TS
Temperature sensor accuracy^d
-
-
±5
°C
a. The ADC reference voltage is 3.0 V. This reference voltage is internally generated from the 3.3 VDDA supply by a band
gap circuit.
b. The ADC must be clocked from the PLL or directly from an external clock source to operate properly.
c. The conversion time and rate scale from the specified number if the ADC internal clock frequency is any value other than
16 MHz.
d. Note that this parameter does not include ADC error.
1162
Texas Instruments-Production Data
July 03, 2014