Table 2 Comparison of the proposed neural stimulation

Technology

0.7 μm HV CMOS

0.18 μm HV CMOS

0.5 μm HV CMOS

0.35 μm HV CMOS

0.18 μm HV CMOS

Dynamic range (μA)

1000

504

3000

1000

1016

Voltage supply (V)

+6/−9

11.5

±8

±5

±20

Maximum mismatch current (μA)

4

N/A

2

0.3

0.24

Mismatch percentage in entire stimulation current range (%)

<0.4

<0.45

N/A

N/A

<0.13

Channels

16

8

N/A

N/A

16