Philips Semiconductors
HECETA4 Temperature and voltage monitor
Product data sheet
NE1619
250
200
150
VDD = 5 V
100
50
0
1k
VDD = 3.3 V
10 k
100 k
SCLK Frequency (Hz)
1000 k
SL01246
Figure 8. Standby Current versus SCLK Frequency
10
9
8
7
6
5
4
3
2
1
0
–1
1k
NOISE=10MVP–P SQ.WAVE
APPLIED BETWEEN D+ & D– PINS
10 k
100 k
1000 k
Noise Frequency (Hz)
10000 k
100000 k
SL01240
Figure 10. Temp error versus Different Mode Noise Frequency
30
NOISE IS AC COUPLED TO D– PINS
25
20
15
10
NOISE=100MVPP
5
NOISE=50MVPP
0
–5
–10
1k
10 k
100 k
1000 k
Noise Frequency (Hz)
10000 k
100000 k
SL01241
Figure 9. Temp Error versus Common Mode Noise
125
100
75
50
25
0
0
25
50
75
100
125
Temperature (deg. C)
SL01247
Figure 11. Relationship between Temperature and
Temp reading
2004 Oct 05
7