TA6009FN/FNG

2003-12-03

4

Application Note

Figure 1 is the composition of G-Force sense amplifier.

The shock sensor is connected between 1 and 2 terminal.

When G-force Sensor (sensor sensibility

= s (mV/G)) is used to detect external shock of g (G), the external

parts are determined as following.

(gain setting) * 10 PIN

→ GND

500/(s

× g) = G1

G1/10

= G (OP-AMP)

(HPF setting)

fc

(LPF setting)

fc

Figure 1

The Composition of G-Force Sense Amplifier

1

Buffer

×1

LPF

2

Buffer

×1

Shock

sensor

AMP

×10

9

8

7

4 OUT

1.1 V (0.7 V)

1.7 V (1.7 V)

Window

Comparator

1.4 V (1.2 V) REF