KA2803BDTF原理图各脚功能电路原理芯片引脚定义引脚图及功能-中国IC网-芯三七

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产品型号KA2803BDTF的概述

芯片KA2803BDTF的概述 KA2803BDTF是一款广泛应用于电子设备中的多功能集成电路，主要用于音频信号的处理和控制。该芯片集成了多种功能，能够支持多种音频效果，因而在音频的处理和控制方面表现出色。KA2803BDTF的设计旨在提高音频设备的性能，使其在各种应用场景中更加灵活和多样。 KA2803BDTF的基本功能包括音量调节、音调控制以及多路信号切换。在现代电子产品中，尤其是音响设备、电视机、音频播放器等，KA2803BDTF都能发挥其重要的作用。由于其良好的性能和高集成度，KA2803BDTF受到众多电子设计工程师的青睐。芯片KA2803BDTF的详细参数 KA2803BDTF的主要参数包括： 1. 电源电压范围: 3V - 15V，这使得芯片能够在多种电源配置中操作。 2. 工作温度范围: -40°C 到 +85°C，适合于各种工作环境。 3. 音频输入电阻: 10kΩ...

产品型号KA2803BDTF的Datasheet PDF文件预览

www.fairchildsemi.com

KA2803B

Earth Leakage Detector

Features

Description

• Low Power Consumption P =5mW, 100V/200V

• Built-in Voltage Regulator

• High Gain Differential Amplifier

• 0.4mA Output Current Pulse to Trigger SCR' S

• Low External Part Count

• DIP Package (8-DIP), High Packing Density

• High Noise Immunity, Large Surge Margin

• Super Temperature Characteristic of Input Sensitivity

The KA2803B is designed for use in earth leakage circuit

interrupters, for stable operation of the AC line in breakers.

The input of the differential amplifier is connected to the

secondary coil of ZCT(Zero Current Transformer). The

amplified output of differential amplifier is integrated at

external capacitor to gain adequate time delay that is

specified in KSC4613. The level comparator generates high

level when earth leakage current is greater than the fixed

level.

• Wide Operating Temperature Range (T = -25°C ~

+80°C)

8-DIP

• Operation from 12 to 20V Input

Functions

• Differential Amplifier

• Level Comparator

• Latch Circuit

8-SOP

Block Diagram

S(Output)

Bias Voltage

Latch

Circuit

Reference

Voltage

Generator

Reference

Circuit

Voltage

GND

Rev. 1.0.4

KA2803B

Absolute Maximum Ratings (T = 25°C)

Parameter

Symbol

Value

Unit

Supply Voltage

Supply Current

°C

Power Dissipation

300

Lead Temperature (Soldering 10sec)

Operating Temperature

Storage Temperature

LEAD

260

OPR

- 25 ~ +80

- 65 ~ +150

°C

STG

Electrical Characteristics

(T = -25°C to 80°C)

Parameter

Symbol

Conditions

Circuit Min. Typ. Max.

580

300 400 530

Unit

(-25°C)

(25°C)

(80°C)

= 12V

V = Open

Supply Current 1

µA

V = 2V

480

= 16V

V = 2V ~ 2.02V V = 2V

Trip Voltage

(Note1)

12.5 14.2

17 mVrms

Differential Amplifier Output

Current 1

= 16V

-12

-30

µA

O(D)

(V -V =30mV , V

=1.2V)

Differential Amplifier Output

Current 2

=16V, V

=0.8V

(rms)

µA

V , V =V

P (Note2)

= 1.4V (-25°C)

= 0.8V (25°C)

= 16V (25°C)

= 16V

200 400 800

100 300 600

Output Current

µA

Latch on Voltage

0.7

-13

1.0

-7

1.4

-1

µA

SCON

Latch Input Current

Output Low Current

Diff. Input Clamp Voltage

Maximum Current Voltage

Supply Current 2

= 16V

SCON

= 12V, V

= 0.2V

= 100mA

IDC

200 800 1400

OSL

= 16V, I

0.4

1.2

IDC

= 7mA

= 12V, V = 0.6V

OSL

200 400 900

µA

= 12V

Latch Off Supply Voltage

= 1.8V

=100mA

= 16V

7.0

8.0

9.0

SOFF

IDC

Response Time(Note1)

V -V = 0.3V , 1V < V < 5V

Note:

1. This Parameter, although guaranteed, is not tested in Production.

2. V =V

-0.03V at V

=2.0V , V =1.5V

pin2 pin4

pin1

KA2803B

Test Circuit

for V Measurement

PIN1

Pin1 Voltage

Supply Current1

Trip Voltage

Pin1 Voltage

V =2V~2.02V

Vpin1

16V

Open

Vr=2V 2

02V

Vpin1

16V

Open

12V

16V

Open

DVM

473

Open

473

Open

DVM

1.5V

1 5V

* V =Vpin1-0.03V

* Vp = Vpin1

0 03V

Differential Amplifier Output

Current2

Output Current

3 Differential Amplifier Output

Current1

Open

16V

Open

16V

Open

16V

Open

0.8V

Open

Iout

0 8V

Open

473

Open

473

Open

^(D)=

Open

1.4V

1 4V

0.8V

0 8V

1.5V

1 5V

Latch Input Current

Output Low Current

6 Latch on Voltage

Open

16V

> 6V

>6V

16V

Open

12V

Open

16V

> 6V

Open

DVM

>6V

473

DVM

0.2V

473

0.6V

Open

1.5V

Open

1.5V

0.6V

Maximum Current Voltage

Supply Current2

Diff. Input Clamp Voltage

I=7mA

100mA V

V =?

IDC

16V

Open

100mA

Open

16V

12V

Open

DVM

0.6V

Open

12V

Open

0 6V

>10V

473

Open

473

Open

Response Time

Latch Off Supply Voltage

0.3V

p-p

100mA

12V

16V

100mA

12V

16V

100

DVM

100

1V<V <5

Open

DVM

473

0.8V

Open

473

KA2803B

Typical Characteristics

Figure 2. Differential Amp. Output Current

VR-VI=30mV, VOD=1.2V

Figure 1. Supply Current

Figure 3. Differential Amp. Output Current

VR, VI=VP, VOD=0.8V

Figure 4. Output Current

Figure 5. Output Low Current

Figure 6. Vcc Voltage Vs. Supply Current 1

KA2803B

Typical Characteristics ^(Continued)

Figure 7. Differential Amp. Output Current 1

Figure 8. Differential Amp. Output

Figure 9. Latch Input Current

Figure 10. Output Low Current

Figure 12. Vcc Voltage Vs. Supply Current 2

Figure 11. Output Current

KA2803B

Typical Characteristics ^(Continued)

Figure 14. Latch Off Supply Voltage

Figure 13. Differential Input Clamp Voltage

Figure 16. Maximum Supply

Figure 15. Latch On Input Voltage

Figure 17. Trip & Output

KA2803B

Typical Characteristics ^(Continued)

INPUT

: Variable

V : Constant

OUTPUT

O OUTPUT

Figure 18. Output Response Time

KA2803B

Application Circuit

Figure 1. Full Wave Application Circuit

Figure 2. Half Wave Application Circuit

Application Note

(refer to full wave application circuit Fig. 1)

The Fig 1 shows the KA2803B connected in a typical leakage current detector system.

The power is applied to the V terminal (Pin 8) of the KA2803B directly from the power line.

The resistor R and capacitor C are chosen so that pin 8 voltage is at least 12V.

The value of C is recommended above 1µF at this time.

If the leakage current is at the load, it is detected by the zero current transformer (ZCT).

The output voltage signal of ZCT is amplified by the differential amplifier of the KA2803B internal circuit and appears as half

cycle sine wave signal referred to input signal at the output of the amplifier.

The amplifier closed loop gain is fixed about 1000 times with internal feedback resistor to compensate for zero current

transformer (ZCT) Variations.

The resistor R should be selected so that the breaker satisfies the required sensing current.

The protection resistor R is not usually used put when the high current is injected at the breaker, this resistor should be used

to protect the earth leakage detector IC the KA2803B.

The range of R is from several hundredΩ to several kΩ.

The capacitor C , is for the noise canceller and standard value of C is 0.047µF. Also the capacitor C is noise canceller

capacitance but it is not usually used.

When high noise is only appeared at this system 0.047µF capacitor may be connected between pin 6 and pin 7.

The amplified signal is finally appeared to the Pin 7 with pulse signal through the internal latch circuit of the KA2803B.

This signal drives the gate of the external SCR which energizes the trip coil which opens the circuit breaker.

The trip time of breaker is decided by the capacitor C and the mechanism breaker.

This capacitor should be selected under 1µF for the required the trip time.

The full wave bridge supplies power to the KA2803B during both the positive and negative half cycles of the line voltage.

This allows the hot and neutral lines to be interchanged.

If your application want the detail information, request it on our application circuit designer of KA2803B.

KA2803B

Mechanical Dimensions

Package

Dimensions in millimeters

8-DIP

6.40 ±0.20

0.252 ±0.008

3.30 ±0.30

0.130 ±0.012

5.08

MAX

0.200

7.62

0.300

3.40 ±0.20

0.134 ±0.008

0.33

MIN

0.013

KA2803B

Mechanical Dimensions ^(Continued)

Package

Dimensions in millimeters

8-SOP

0.1~0.25

MIN

0.004~0.001

1.55 ±0.20

0.061 ±0.008

6.00 ±0.30

0.236 ±0.012

1.80

0.071

MAX

3.95 ±0.20

0.156 ±0.008

5.72

0.225

0.50 ±0.20

0.020 ±0.008

KA2803B

Ordering Information

Product Number

KA2803B

Package

Operating Temperature

8-DIP

-20 ~ +80°C

KA2803BD

8-SOP

KA2803B

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY

PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY

LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER

DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES

OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR

CORPORATION. As used herein:

1. Life support devices or systems are devices or systems

which, (a) are intended for surgical implant into the body,

or (b) support or sustain life, and (c) whose failure to

perform when properly used in accordance with

instructions for use provided in the labeling, can be

reasonably expected to result in a significant injury of the

user.

2. A critical component in any component of a life support

device or system whose failure to perform can be

reasonably expected to cause the failure of the life support

device or system, or to affect its safety or effectiveness.

www.fairchildsemi.com

9/5/02 0.0m 001

Stock#DSxxxxxxxx

2002 Fairchild Semiconductor Corporation

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KA2803BDTF产品参数

型号:	KA2803BDTF
Brand Name：	Fairchild Semiconductor
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Transferred
IHS 制造商：	FAIRCHILD SEMICONDUCTOR CORP
零件包装代码：	SOIC
包装说明：	SOP, SOP8,.25
针数：	8
制造商包装代码：	8LD, SOIC,JEDEC MS-012, .150" NARROW BODY
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.31.00.01
风险等级：	3.27
Samacsys Confidence：	3
Samacsys Status：	Released
Samacsys PartID：	1168770
Samacsys Pin Count：	8
Samacsys Part Category：	Integrated Circuit
Samacsys Package Category：	Small Outline Packages
Samacsys Footprint Name：	8-Pin SOIC-311
Samacsys Released Date：	2018-11-15 16:31:16
Is Samacsys：	N
其他特性：	BUILT-IN VOLTAGE REGULATOR
可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e3
长度：	4.9 mm
湿度敏感等级：	1
信道数量：	1
功能数量：	1
端子数量：	8
最高工作温度：	80 °C
最低工作温度：	-20 °C
封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP
封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260
电源：	12/16 V
认证状态：	Not Qualified
座面最大高度：	1.8 mm
子类别：	Power Management Circuits
最大供电电流 (Isup)：	0.58 mA
最大供电电压 (Vsup)：	20 V
最小供电电压 (Vsup)：	12 V
标称供电电压 (Vsup)：	16 V
表面贴装：	YES
温度等级：	COMMERCIAL EXTENDED
端子面层：	Matte Tin (Sn)
端子形式：	GULL WING
端子节距：	1.27 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.9 mm
Base Number Matches：	1

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