ADM8845 Ver la hoja de datos (PDF) - Analog Devices
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ADM8845 Datasheet PDF : 20 Pages
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ADM8845
TYPICAL PERFORMANCE CHARACTERISTICS
35
30
25
20
15
10
5
4.75
6.75
8.75
10.75
RSET (kΩ)
12.75
14.75
Figure 3. ILED (mA) Current vs. RSET
20.35
20.30
20.25
–40°C
20.20
20.15
20.10
25°C
85°C
20.05
20.00
2.6
3.1
3.6
4.1
4.6
5.1
5.6
SUPPLY VOLTAGE (kΩ)
Figure 4. ILED (mA) vs. Temperature (°C), Six LEDs Enabled
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–40
–20
0
25
45
65
85
TEMPERATURE (°C)
Figure 5. ILED Matching (%) over Temperature (°C), VCC = 3.6 V, ILED = 20 mA,
Six LEDs Enabled
0.4
0.3
MAX POSITIVE MATCHING ERROR
0.2
0.1
0
–0.1
–0.2
MAX NEGATIVE MATCHING ERROR
–0.3
–0.4
2.6
3.0
3.4
3.8
4.2
4.6
5.0
5.4
SUPPLY VOLTAGE (V)
Figure 6. ILED (mA) Matching Error (%) vs. Supply Voltage (V),
TA = 25°C and ILED = 20 mA
20.24
20.22
20.20
20.18
20.16
20.14
20.12
20.10
20.08
–40
0
40
80
TEMPERATURE (°C)
Figure 7. ILED (mA) Variation over Temperature (°C), VCC = 3.6 V
35
30
25
20
15
10
5
2.6
3.0
3.4
3.8
4.2
4.6
5.0
5.4
SUPPLY VOLTAGE (V)
Figure 8. ILED (mA) vs. Supply Voltage (V)
Rev. 0 | Page 6 of 20
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