CN209267538U

CN209267538U - A kind of filter of the integrated comparator with reset function

Info

Publication number: CN209267538U
Application number: CN201822102378.9U
Authority: CN
Inventors: 张南阳; 马辉; 魏昊
Original assignee: STEADICHIPS Inc
Current assignee: Hangzhou Sitai Microelectronics Co ltd
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2019-08-16
Anticipated expiration: 2028-12-14

Abstract

The utility model relates to filter construction technical fields, the filter of specially a kind of integrated comparator with reset function, it can guarantee that powering on entire integrated chip every time all works normally, simultaneously, the utility model additionally provides corresponding control method, it includes integration packaging in the filter module in an integrated chip, comparator module, clamp circuit, bias circuit, reseting module is additionally provided in the integrated chip, the bias circuit electricly connects the comparator and the filter module by the reseting module, the vision signal output pin electricly connected with the clamp circuit is provided in the integrated chip, the vision signal output pin electricly connected with the filter module output end, the reference voltage input pin electricly connected with the comparator module input terminal and control signal input Pin, the control signal output pin electricly connected with the comparator module input terminal, the reseting pin electricly connected with the reseting module.

Description

A kind of filter of the integrated comparator with reset function

Technical field

The utility model relates to filter construction technical field, the filter of specially a kind of integrated comparator with reset function Wave device.

Background technique

Now with the development of automobile, more and more, the vehicle-mounted reverse image of the demand and type of vehicle-mounted electronic system Also more and more with automobile data recorder demand, automobile each so just needs multiple audio-video systems.But automobile needs to open daily Dynamic and closing many times, leads to the multiple on and off of audio-video system.In safety-security area, monitoring camera is also in this way, also can Occur often opening and closing phenomenon.The frequent unlatching of this power supply, so that connecting filter and master chip with video monitoring Meeting generation timing sequence mistake is powered on, causes chip operation abnormal, as shown in Figure 1 the filter of traditional integrated comparator, only Only comparator and filter.When powering on, filter can export some clutters, but comparator can be these clutter solutions Out, while controller is transmitted to.Will lead to controller in this way can obtain the instruction of mistake, influence to work normally.

Summary of the invention

In order to solve the problems, such as that existing filter causes integrated chip run-time error, this reality occur because of the frequent unlatching of power supply A kind of filter of integrated comparator with reset function is provided with novel, each power on of working can be had in arms and entirely integrated Chip all works normally.

Its technical solution is such that a kind of filter of integrated comparator with reset function comprising integration packaging In filter module, comparator module, clamp circuit, bias circuit in an integrated chip, which is characterized in that described integrated Reseting module is additionally provided in chip, the bias circuit electricly connects the comparator and the filter by the reseting module Wave device module, be provided in the integrated chip vision signal output pin electricly connected with the clamp circuit, with it is described The vision signal output pin that filter module output end electricly connects and the ginseng that the comparator module input terminal electricly connects It examines voltage input pin and controls signal input tube foot, exported with the control signal that the comparator module input terminal electricly connects Pin, the reseting pin electricly connected with the reseting module.

After the filter of the utility model and corresponding control method, compare when chip does not power on complete Device module and filter module be it is idle, only power on completely after, reseting module outputs signal to comparator module and filter Wave device module, while the signal that reseting module exports keeps master controller and comparator module, filter module same to master controller Shi Fuwei starts to work, and is not in phenomena such as transmitting error signal is to master controller, ensure that entire chip works normally.

Detailed description of the invention

Fig. 1 is existing integrated chip schematic diagram；

Fig. 2 is the utility model integrated chip schematic diagram.

Specific embodiment

As shown in Figure 2, a kind of filter of the integrated comparator with reset function comprising integration packaging is integrated in one Filter module, comparator module, clamp circuit, bias circuit, reseting module in chip, bias circuit pass through reseting module Comparator and filter module are electricly connected, the vision signal efferent duct electricly connected with clamp circuit is provided in integrated chip Foot IN, the vision signal output pin OUT electricly connected with filter module output end and the automatically controlled company of comparator module input terminal The control that the reference voltage input pin VREF and control signal input tube foot VIN and comparator module input terminal connect is electricly connected The reseting pin that signal output pin COMP_OUT and reseting module processed are electricly connected.

Control principle is as described below:

(1) after power supply is powered, reseting module first starts power up work, exports one after reseting module normal work RESET signal makes comparator module and filter module start power up work to comparator module and filter module；

(2) it is powered on after completion works normally in comparator module and exports a READY_COM signal to reseting module, simultaneously Filter module powers on after completion works normally and exports a READY_LPF signal to reseting module；

(3) reseting module judges that entire integrated chip has all powered on completion and started normal work after receiving above-mentioned two signal Make, reseting module exports a RESET non-signal to master controller, i.e., gives main control by controlling signal input tube human hair combing waste Device makes master controller normally start power up work.

The utility model structure is simple, and application effect is obvious, and inside is not in real timing error, can guarantee on every time It can be that master controller, comparator module, filter module can normally start after the completion of electricity.

Claims

1. a kind of filter of the integrated comparator with reset function comprising integration packaging is in the filtering in an integrated chip Device module, comparator module, clamp circuit, bias circuit, which is characterized in that reset mould is additionally provided in the integrated chip Block, the bias circuit electricly connect the comparator and the filter module, the integrated core by the reseting module On piece is provided with the vision signal output pin electricly connected with the clamp circuit, automatically controlled with the filter module output end The vision signal output pin of connection, the reference voltage input pin electricly connected with the comparator module input terminal and control Signal input tube foot, the control signal output pin electricly connected with the comparator module input terminal and the reseting module The reseting pin electricly connected.