Octal D-Type Latch with 3-STATE Outputs


General Description

The DM74LS573 is a high speed octal latch with buffered common Latch Enable (LE) and buffered common Output Enable (OE) inputs.

This device is functionally identical to the DM74LS373, but has different pinouts.



Features

- Inputs and outputs on opposite sides of package allowing easy interface with microprocessors

- Useful as input or output port for microprocessors

- Functionally identical to DM74LS373

- Input clamp diodes limit high speed




74ls537.pdf


PNP switching transistor : High-speed switching in industrial applications.









2N3906(PNP).pdf


7~40V의 입력으로 깔끔하게 5V를 만들어주는 IC입니다 ^^


물론 인덕터와 대용량(?) 커패시터를 귀찮게 달아줘야해서 7805를 쓰겠다는 분이 계시겠지만!!


발열량과 효율성, 그리고 출력전류로 따져보았을때! LM2576T를 안쓰실수가 없을겁니다 ^^


데이터시트는 아래에 있습니다! 





LM2576T-5V.pdf


블루투스 모듈을 사용하실때 주로 3.3V를 만들어주기위해서 사용하는 IC입니다 ^^


잘 쓰신다면 ADJ를 쓰시면 되지만~ 귀찮다~ 그냥 바로 어플리케이션만 보고 땡겨 쓰시겠다는 분은


아래의 데이터 시트를 참고해주세요~ㅎ



LD1117.pdf


8-bit with 8K Bytes In-System Programmable Flash

 

 

간단한 특징은 아래와 같습니다.

 

(1) 저 전력 고성능의 RISC구조 - 8MHz를 사용 시 8MIPS, 16MHz 사용 시 16MIPS 실행
(2) 데이터 및 비휘발성 프로그램 메모리
    - 8K Bytes의 프로그램 가능한 Flash Memory (직렬 프로그래밍 인터페이스 방식)
    - 1K Bytes의 내부 SRAM
    - 512 Bytes의 데이터 EEPROM(직렬 프로그래밍 인터페이스 방식)
    - In-System Programing을 위한 SPI Interface
(3) 주변장치의 특징 - 8비트 범용 작업 레지스터 32개
    - Programmable Serial USART
    - Master/Slave SPI Serial Interface
    - 별도의 프리스케일러를 갖는 8비트 타이머/카운터 2개
    - 비교·캡쳐 모드와 8~10비트의 PWM기능을 갖는 16비트 타이머/카운터
(4) 내부 및 외부 인터럽트 소스
(5) 저 전력 Idle, Power Save과 Power-down 모드
(6) 동작전압 : 4.5∼5.5V
(7) 동작클럭 : 0∼16 MHz

 

Features
• High-performance, Low-power AVR® 8-bit Microcontroller
• Advanced RISC Architecture
– 130 Powerful Instructions – Most Single-clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16 MHz
– On-chip 2-cycle Multiplier
• Nonvolatile Program and Data Memories
– 8K Bytes of In-System Self-Programmable Flash
Endurance: 10,000 Write/Erase Cycles
– Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
True Read-While-Write Operation
– 512 Bytes EEPROM
Endurance: 100,000 Write/Erase Cycles
– 1K Byte Internal SRAM
– Programming Lock for Software Security
• Peripheral Features
– Two 8-bit Timer/Counters with Separate Prescaler, one Compare Mode
– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture
Mode
– Real Time Counter with Separate Oscillator
– Three PWM Channels
– 8-channel ADC in TQFP and MLF package
Eight Channels 10-bit Accuracy
– 6-channel ADC in PDIP package
Eight Channels 10-bit Accuracy
– Byte-oriented Two-wire Serial Interface
– Programmable Serial USART
– Master/Slave SPI Serial Interface
– Programmable Watchdog Timer with Separate On-chip Oscillator
– On-chip Analog Comparator
• Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal Calibrated RC Oscillator
– External and Internal Interrupt Sources
– Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and
Standby
• I/O andPackages
– 23 Programmable I/O Lines
– 28-lead PDIP, 32-lead TQFP, and 32-pad MLF
• Operating Voltages
– 2.7 - 5.5V (ATmega8L)
– 4.5 - 5.5V (ATmega8)
• Speed Grades
– 0 - 8 MHz (ATmega8L)
– 0 - 16 MHz (ATmega8)
• Power Consumption at 4 Mhz, 3V, 25°C
– Active: 3.6 mA
– Idle Mode: 1.0 mA
– Power-down Mode: 0.5 μA

 

 

아트메가128을 통해서 이미 다 공부해보시고 원하는 기능만을 구현하실때 사용하시면 참 편리합니다^^

적당한 I/O 갯수로 원하는 동작을 심플하게 디자인된 회로로 만들어 내실수 있습니다.

 

 

 

 

ATMega8.pdf

 

SHT1x / SHT7x
Humidity & Temperature Sensor

 

Relative humidity and temperature sensors
- Dew point
- Fully calibrated, digital output
- Excellent long-term stability
- No external components required
- Ultra low power consumption
- Surface mountable or 4-pin fully interchangeable
- Small size
- Automatic power down

 

 

SHT1x / SHT7x Product Summary
The SHTxx is a single chip relative humidity and temperature multi sensor module comprising a calibrated digital output. Application of industrial CMOS processes withpatented micro-machining (CMOSens® technology) ensures highest reliability and excellent long term stability. The device includes a capacitive polymer sensing element for relative humidity and a bandgap temperature sensor. Both are seamlessly coupled to a 14bit analog to digital converter and a serial interface circuit on the same chip. This results in superior signal quality, a fast response time and insensitivity to external disturbances (EMC) at a very competitive price. Each SHTxx is individually calibrated in a precision humidity chamber with a chilled mirror hygrometer as reference. The calibration coefficients are programmed into the OTPmemory. These coefficients are used internally during measurements to calibrate the signals from the sensors.
The 2-wire serial interface and internal voltage regulation allows easy and fast system integration. Its tiny size and low
power consumption makes it the ultimate choice for even the most demanding applications.

The device is supplied in either a surface-mountable LCC (Leadless Chip Carrier) or as a pluggable 4-pin single-in-line
type package. Customer specific packaging options may be available on request.

 

 

 

 

 

온도 습도 센서.pdf

 

 

DUAL LOW VOLTAGEPOWER AMPLIFIER

 

 

 

DESCRIPTION
The UTC TDA2822 is a monolithic integrated audio amplifier
in a 8-Pin plastic dual in line package. It is designed for
portable cassette players and radios.

 

 

Operating Supply Voltage 1.8V ~ 12V

 

저전압 동작 OP-AMP 입니다! 간단한 5V 동작 오디오 앰프로 쓰일수 있습니다.

저전압이기때문에 간단하게 USB 전원으로도 충분한 성능을 보일수 있습니다.

 

 

 

 

 

 

TDA2822_low.pdf

 

A741, uA741Y

GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

 


● Short-Circuit Protection

●  Offset-Voltage Null Capability

●  Large Common-Mode and Differential

     Voltage Ranges

●  No Frequency Compensation Required

●  Low Power Consumption

●  No Latch-Up

●  Designed to Be Interchangeable With

     Fairchild mA741

 


Description


The mA741 is a general-purpose operational amplifier featuring offset-voltage null capability. The high common-mode input voltage range and the absence of latch-up make the amplifier ideal for voltage-follower applications. The device is short-circuit protected and the internal frequency compensation ensures stability without external components. A low value potentiometer may be connected between the offset null inputs to null out the offset voltage as shown in Figure 2.

The mA741C is characterized for operation from 0°C to 70°C. The mA741I is characterized for operation from –40°C to 85°C.The mA741M is characterized for operation over the full military temperature range of –55°C to 125°C.

 

 

전자회로 실험시간에 한번씩 써보셨을거라 생각되는 굴러다니는 OP_AMP IC 입니다.^^




UA741.pdf


소자의 이름에는 그 소자의 특성과 기능(?) 등이 숨어있답니다.

 

NTC-10KD-5J

 

NTC : Negative를 의미합니다. 온도가 올라갈수록 저항값이 낮아진다는걸 의미하죠

10KD : 기준온도(25도)에서 저항값이 10K옴이라는 뜻입니다.

5J : 저항값의 오차율이 +,-5%를 의미한다는 말입니다.

 

개념 : MCU에서 (현재기준은 ATmega128로 설명) 값을 읽을때는 0,1밖에 인식을 하지 못합니다.

         그래서 ADC를 사용합니다.아래의 회로에서는 " 입력전압값 = [ RT1 / (R4+RT1) ]*VCC " 을 읽습니다.

         자세한 내용은 "아무도 가르쳐주지 않는" 파트를 참고해주세요.

 

온도센서의 경우 아래의 회로도를 참고해주세요.

 

 

 

 

 

10KD-5J RT.pdfNTC-10KD-5J R값.txtNTC-10KD-5J.pdf


The LM386 is a power amplifier designed for use in low voltage
consumer applications. The gain is internally set to 20 to
keep external part count low, but the addition of an external
resistor and capacitor between pins 1 and 8 will increase the
gain to any value up to 200.
The inputs are ground referenced while the output is automatically
biased to one half the supply voltage. The quiescent
power drain is only 24 milliwatts when operating from a

 


6 volt supply, making the LM386 ideal for battery operation.

저전압 스피커설계시 주로 사용하는 Amp입니다 ^^

나중에 USB전원으로 동작하는 관련회로도도 포스팅해보겠습니다~




LM386.pdf

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