Datasheet

ADP1650
Rev. C | Page 10 of 32
08837-060
0 25 50 75 100 125 150
ADC RESULT (Binary)
DIE TEMPERATURE (°C)
0010
0000
0100
0110
1000
1010
1100
1110
1111
Figure 18. ADC Die Temperature Mode Transfer Characteristic
0
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2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4
ADC RESULT (Binary)
LED_OUT VOLTAGE (V)
0010
0000
0100
0110
1000
1010
1100
1110
1111
Figure 19. ADC LED V
F
Mode Transfer Characteristic
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3.710
3.715
3.720
3.725
3.730
3.735
3.740
3.745
3.750
3.755
3.760
–40 10 60 110
CODE 1000 MIDPOINT (V)
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 5.0V
TEMPERATURE (°C)
Figure 20. ADC LED V
F
Mode, Code 1000, Midpoint vs. Temperature
08837-063
286
287
288
289
290
291
292
293
294
295
–40 10 60 110
CODE 1000 MIDPOINT (mV)
TEMPERATURE (°C)
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 5V
Figure 21. ADC External Voltage Mode, Code 1000, Midpoint vs. Temperature
08837-066
LED CURRENT ERROR (%)
–2.5
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
–40 10 60 110
LED CURRENT ERROR (%)
TEMPERATURE (°C)
V
IN
= 3.2V
V
IN
= 3.6V
V
IN
= 4.2V
Figure 22. LED Current Accuracy vs. Temperature, I
LED
= 1200 mA
08837-067
–3.0
–2.5
–2.0
–1.5
–1.0
–0.5
0
0.5
–40 10 60 110
LED CURRENT ERROR (%)
TEMPERATURE (°C)
V
IN
= 3.2V
V
IN
= 3.6V
V
IN
= 4.2V
Figure 23. LED Current Accuracy vs. Temperature, I
LED
= 800 mA