9

5

5.5

6

6.5

7

7.5

8

Voltage (V)

0

2

4

6

8

10

12

14

16

18

20

|Icomp(I_METER.AMP1,0)| (mA)

Diode_current

Figure 16. Typical ESD diode current versus diode voltage for 11-connected

diodes in series

Note:

1. 50O Resistor may need to

modify to obtain desired

quiescent drain current.

2. Vg can be connected either

pin-1 or pin-7.

3. Vd1 can be connected either

pin-2 or pin-6.

4. Vd2 must be connected

both sides (pin-3 and pin-5).

(a) Single positive bias operation

Figure 17. AMMP-6421 Schematic and recommended assemble example

(b) Dual positive bias operation

Note:

1. Vg=+0.5V

may

need

to

adjust to obtain desired

quiescent drain current.

2. Vg can be connected to

either pin-1 or pin-7.

3. Vd1 can be connected to

either pin-2 or pin-6.

4. Vd2 must be connected to

both sides (pin-3 and pin-5).

RF_INRF_OUT

Vd = 5V

>0.1 F

>0.1 F 100 pF

8

1

2

3

4

5

6

7

100 pF

100 pF

450

>0.1 F

50

RF_INRF_OUT

Vd = 5V

>0.1 F

>0.1 F100 pF

8

1

2

3

4

5

6

7

100 pF

100 pF

>0.1 F

Vg = 0.5V