Datasheet
ADP1649 Data Sheet
Rev. 0 | Page 10 of 28
Figure 17. ADC Die Temperature Mode Transfer Characteristic
Figure 18. ADC LED V
F
Mode Transfer Characteristic
Figure 19. ADC LED V
F
Mode, Code 1000, Midpoint vs. Temperature
Figure 20. ADC External Voltage Mode, Code 1000, Midpoint vs. Temperature
Figure 21. LED Current Error vs. Temperature, I
LED
= 800 mA
Figure 22. LED Current Error vs. Temperature, I
LED
= 1000 mA
0 25 50 75 100 125 150
ADC RESULT (Binary)
DIE TEMPERATURE (°C)
0010
0000
0100
0110
1000
1010
1100
1110
1111
10779-017
08837-061
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
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)
10779-019
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
10779-020
–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
10779-021
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
10779-022