S-80722AL-AK-X Ver la hoja de datos (PDF) - Seiko Instruments Inc

Número de pieza

componentes Descripción

Fabricante

S-80722AL-AK-X

HIGH-PRECISION VOLTAGE DETECTOR

Seiko Instruments Inc 

Collection of Product FAQs

Author: Hamaguchi Masanao

Date: 98/11/12 (Thursday) 10:17 (Modified: 98/12/14 (Monday) 16:42)

<Information level>

A:

Public (Printing O.K.)

Index:

B: Technical

<Product>

Division name: 01 IC

Category 1: 11 Power Supply

Category 2:

Cal No.:

1. Voltage Detectors

S-807

Related Documents:

Question:

What is the method for calculating delay-time of the power-on clear circuit?

Answer:

The delay time (power-on clear time) produced in a power-on clear circuit using the S-807xxAN can be

found by substituting constants in the following formula:

Tdelay =

1× C × R × Ln (1

-

Vdet +

Vdd

)

Tdelay: Delay time [sec]

C: External capacitance value [F]

R: Resistance value [Ω]

V det+: S-807xxAN Series release voltage [V]

Vdd: Supply voltage [V]

Vdd

V

Supply voltage (Vdd)

R

S-807xxAN

Pull-up resistor

C

Delay time

Note: Set R to less than 7.5 kΩ to prevent oscillation.

S-807xxAN release voltage (Vdet+)

S-807 input voltage

40

Share Link: