SM3600AP

SEIKO NPC CORPORATION - 8

TYPICAL APPLICATION CIRCUIT

It is necessary to take the difference between VREF and OUT to cancel the power-supply voltage fluctuation.

Circuit 1

Low-pass Filter Configuration

LPF (low-pass filter) fc (cutoff frequency): 1.94kHz

Circuit 2

Configuration with ExternalAmplifier

HPF (high-pass filter) fc1 (cutoff frequency): 1.59Hz

LPF (low-pass filter) fc2 (cutoff frequency): 194Hz

*If a low-pass filter is not used (capacitors C and C2 are not used), leave the G1 pin open-circuit.

*The typical applications circuits are for reference purposes only and correct operation using these circuits is not guaranteed.

NPC accepts no responsibility for damage or loss caused by their use. Use the circuits only after thorough evaluation.

SM3600AP

VDD CE

SET

VREF

OUT

G1

C=1/ (2π×100k×fc)

VSS

5V

0→5V

ADC or CMP

820pF(C)

1μF

SM3600AP

VDD CE

SET

VREF

OUT

G1

VSS

5V

0→5V

ADC or CMP

8200pF(C2)

1μF

1μF(C1)

90kΩ

10kΩ

100kΩ(R1)

AMP

0 to 20dB

+

−

LPF:C2=1/ (2π×100k×fc2)

HPF:C1=1/ (2π×R1×fc1)