Data Sheet

[AK9753]
017005237-E-00 2017/04
- 36 -
10). ETH13H, ETH24H, ETH12L, ETH24L: Threshold level setting for the differential outputs
(IR1 - IR3 / IR2 - IR4) (Read / Write Registers)
Address
Name
D7
D6
D5
D4
D3
D2
D1
D0
11H
ETH13H
TEH13H_4
TEH13H_3
ETH13H_2
ETH13H_1
ETH13H_0
0
0
0
12H
ETH13H
0
ETH13H_11
ETH13H_10
ETH13H_9
ETH13H_8
ETH13H_7
ETH13H_6
ETH13H_5
13H
ETH13L
ETH13L_4
ETH13L_3
ETH13L_2
ETH13L_1
ETH13L_0
0
0
0
14H
ETH13L
0
ETH13L_11
ETH13L_10
ETH13L_9
ETH13L_8
ETH13L_7
ETH13L_6
ETH13L_5
15H
ETH24H
ETH24H_4
ETH24H_3
ETH24H_2
ETH24H_1
ETH24H_0
0
0
0
16H
ETH24H
0
ETH24H_11
ETH24H_10
ETH24_9
ETH24H_8
ETH24H_7
ETH24H_6
ETH24H_5
17H
ETH24L
ETH24L_4
ETH24L_3
ETH24L_2
ETH24L_1
ETH24L_0
0
0
0
18H
ETH24L
0
ETH24L_11
ETH24L_10
ETH24L_9
ETH24L_8
ETH24L_7
ETH24L_6
ETH13L_5
Reset
0
0
0
0
0
0
0
0
Threshold Level setting for the differential output (IR1 - IR3 / IR2 - IR4)
TH13H [11:0], TH24H [11:0]: Upper Threshold Level setting for the differential output (IR1 - IR3 / IR2 - IR4)
TH13L [11:0], TH24L [11:0]: Lower Threshold Level setting for the differential output (IR1 - IR3 / IR2 - IR4)
The setting range is shown in Table 14.5.
Table 14.5. Threshold Level setting for the differential output (IR1 - IR3 / IR2 - IR4)
Threshold level [11:0]
Differential Current Output
Unit
Two’s Complement
Hex
Decimal
0111 1111 1111
7FF
2047
7139.32
pA
⁞
⁞
⁞
⁞
0000 0000 0001
001
1
3.4877
0000 0000 0000
000
0
0
1111 1111 1111
FFF
-3.4877
⁞
⁞
⁞
⁞
1000 0000 0000
800
-2048
-7142.81
Differential current output is calculated by the following formula,
Differential current output = 3.4877 x Threshold level [11:0](Decimal) pA
Note:
* 17. The threshold levels should be set as “ETH13H > ETH13L, ETH24H > ETH24L”. Otherwise, AK9753
cannot operate normally.