CXA2108AQ Просмотр технического описания (PDF) - Sony Semiconductor
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CXA2108AQ Datasheet PDF : 27 Pages
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CXA2108AQ
Rext [kΩ] D9
D8 Io (FFh) [mA]
2.0
0
0
21.7
2.0
0
1
43.3
2.0
1
0
65.0
2.0
1
1
86.7 ∗1
2.5
0
0
17.3
2.5
0
1
34.7
2.5
1
0
52.0
2.5
1
1
69.3
3.0
0
0
14.4
3.0
0
1
28.9
3.0
1
0
43.3
3.0
1
1
57.8
3.5
0
0
12.4
3.5
0
1
24.8
3.5
1
0
37.1
3.5
1
1
49.5
4.0
0
0
10.8
4.0
0
1
21.7
4.0
1
0
32.5
4.0
1
1
43.3
∗1 Absolute maximum rating exceeded.
Istb [mA]
22.3
38.1
53.8
69.6
18.4
31.1
43.7
56.3
15.9
26.4
36.9
47.4
14.0
23.1
32.1
41.1
12.7
20.6
28.4
36.3
Pstb [W]
0.111
0.190
0.269
0.348
0.092
0.155
0.218
0.281
0.079
0.132
0.184
0.237
0.070
0.115
0.160
0.205
0.063
0.103
0.142
0.182
Po (max) [W]
1.39
1.31
1.23
1.15
1.41
1.34
1.28
1.22
1.42
1.37
1.32
1.26
1.43
1.38
1.34
1.29
1.44
1.40
1.36
1.32
Table 2. Drive Current Setting and Power Consumption (when D0 to D7 = FFh)
Rext : External resistor that sets the DAC reference current (Iref)
D9, D8 : Data that sets the maximum drive current (Io (FFh))
Iref : DAC reference current
Iref [mA] = 1.3 [V]/Rext [kΩ]/24
Io (FFh) : Maximum drive current that can be set by D0 to D7
Io (FFh) [mA] = Iref × (2 × D9 + D8 + 1) × 800
Istb : Standby current (Internal current consumption excluding the driver block)
Istb [mA] = 3.06 + 24 × Iref × (16/3 + 24.25 × (2 × D9 + D8 + 1))
Pstb : Standby power (Internal power consumption excluding the driver block, Vcc = 5 V)
Pstb [W] = 5 [V] × Istb [mA]/1000
Po (max) : Maximum power that can be consumed by the driver block
Po (max) [W] = 1.5 [W] – Pstb [W]
Note) Istb, Pstb and Po (max) are the values when D0 to D7 = 11111111 (FFh).
In addition, these values assume the case where all channels are set to the same drive current.
–8–
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