
Preliminary
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2013-06-28 - EFM32LG230FXX - d0105_Rev1.10
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Figure 3.19. ADC Temperature sensor readout
–40
–25 –15
–5
5
15
25
35
45
55
65
75
85
Tem perat ure [ ° C]
2100
2200
2300
2400
2500
2600
S
e
n
s
o
r
re
a
d
o
u
t
Vdd= 1.8
Vdd= 3
Vdd= 3.8
3.11 Digital Analog Converter (DAC)
Table 3.15. DAC
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VDD voltage reference, single
ended
0
VDD V
VDACOUT
Output voltage range
VDD voltage reference, differ-
ential
-VDD
VDD V
VDACCM
Output common mode volt-
age range
0
VDD V
500 kSamples/s, 12bit
400
A
100 kSamples/s, 12 bit
200
A
IDAC
Active current including ref-
erences for 2 channels
1 kSamples/s 12 bit NORMAL
38
A
SRDAC
Sample rate
500
ksam-
ples/s
Continuous Mode
1000
kHz
Sample/Hold Mode
250
kHz
fDAC
DAC clock frequency
Sample/Off Mode
250
kHz
CYCDACCONV
Clock cyckles per conver-
sion
2
tDACCONV
Conversion time
2
s
tDACSETTLE
Settling time
5
s
500 kSamples/s, 12 bit, sin-
gle ended, internal 1.25V ref-
erence
58
dB
500 kSamples/s, 12 bit, sin-
gle ended, internal 2.5V refer-
ence
59
dB
SNRDAC
Signal to Noise Ratio
(SNR)
500 kSamples/s, 12 bit, dif-
ferential, internal 1.25V refer-
ence
58
dB