“程控7灯单片机”实践案例

“程控7灯单片机”实践案例“程控7灯单片机”实践案例“程控7灯单片机”实践案例“程控7灯单片机”实践案例

LM4562高保真音频运放.doc

M4562是美国国家半导体公司全新推出的超低失真、低噪声、高转换速率运算放大器系列中的一员，该系列完全针对高性能、高保真的应用。通过采用最尖端的工艺技术和最新的电路设计方法，LM4562音频运放可提供出色的音频信号放大功能。该运放拥有极低的电压噪声密度(2.7nV/Hz1/2)和THD+N(0.00003%)，以及极高的增益带宽积(55MHz)可轻松满足最苛刻的音频应用需求。为了确保能顺利驱动最难应对的负载，LM4562具有±20V/us的高转换速率和±30mA的电流输出能力。此外，输出级驱动2kΩ负载所需的电源电压不到1V，而驱动600Ω负载所需的电源电压不到1.4V，可使动态范围最大

51P0口上拉电阻详解.doc

P0上拉电阻- - 在数字电路中不用的输入脚都要接固定电平，通过1k电阻接高电平或接地。 1. 电阻作用： l 接电组就是为了防止输入端悬空 l 减弱外部电流对芯片产生的干扰 l 保护cmos内的保护二极管,一般电流不大于10mA l 上拉和下拉、限流 l 1. 改变电平的电位，常用在TTL-CMOS匹配 2. 在引脚悬空时有确定的状态 3.增加高电平输出时的驱动能力。 4、为OC门提供电流

AD603.PDF资料

FEATURES “Linear in dB” Gain Control Pin Programmable Gain Ranges –11 dB to +31 dB with 90 MHz Bandwidth +9 dB to +51 dB with 9 MHz Bandwidth Any Intermediate Range, e.g., –1 dB to +41 dB with 30 MHz Bandwidth Bandwidth Independent of Variable Gain 1.3 nV/ÖHz Input Noise Spectral Density 60.5 dB Typical Gain Accuracy MIL-STD-883 Compliant and DESC Versions Available APPLICATIONS RF/IF AGC Amplifier Video Gain Control A/D Range Extension Signal Measurement Low Noise, 90 MHz Variable-Gain Amplifier PRODUCT DESCRIPTION

TDA8922j.pdf资料

TDA8922 2 ´ 25 W class-D power amplifier 1 FEATURES · High efficiency (~90%) · Operating supply voltage from ±12.5 to ±30 V · Very low quiescent current · Low distortion · Usable as a stereo Single-Ended (SE) amplifier or as a mono amplifier in Bridge-Tied Load (BTL) · Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in Bridge-Tied Load (BTL) · High output power · Good

MAX038.pdf资料

The MAX038 is a high-frequency, precision function generator producing accurate, high-frequency triangle, sawtooth, sine, square, and pulse waveforms with a minimum of external components. The output frequency can be controlled over a frequency range of 0.1Hz to 20MHz by an internal 2.5V bandgap voltage reference and an external resistor and capacitor. The duty cycle can be varied over a wide range by applying a ±2.3V control signal, facilitating pulse-width modulation and the generation of sawtooth waveforms. Frequency modulation and frequency sweeping are achieved in the same way. The duty cycle and frequency controls are independent. Sine, square, or triangle waveforms can be selected

TDA2822.pdf资料

..SUPPLY VOLTAGEDOWN TO 3 V .LOWCROSSOVER DISTORSION .LOWQUIESCENT CURRENT BRIDGE OR STEREO CONFIGURATION DESCRIPTION The TDA2822 is a monolithic integrated circuit in 12+2+2 powerdip, intended for use as dual audio power amplifier in portable radios and TS sets.

ADC0809.pdf资料

ADC0808/ADC0809 8-Bit μP Compatible A/D Converters with 8-Channel Multiplexer General Description The ADC0808, ADC0809 data acquisition component is a monolithic CMOS device with an 8-bit analog-to-digital converter, 8-channel multiplexer and microprocessor compatible control logic. The 8-bit A/D converter uses successive approximation as the conversion technique. The converter features a high impedance chopper stabilized comparator, a 256R voltage divider with analog switch tree and a successive approximation register. The 8-channel multiplexer can directly access any of 8-single-ended analog signals. The device eliminates the need for external zero and full-scale adjustments. Easy interfacing to microprocessors is provided by the latched and decoded multiplexer address

LM7809.pdf资料

3-TERMINAL 1A POSITIVE VOLTAGE REGULATOR DESCRIPTION The UTC 78XX family is monolithic fixed voltage regulator integrated circuit. They are suitable for applications that required supply current up to 1 A. FEATURES *Output current up to 1.5 A *Fixed output voltage of 5V, 6V, 8V, 9V, 10V, 12V, 15V ,18V and 24V available *Thermal overload shutdown protection *Short circuit current limiting *Output transistor SOA protection

7805CV.pdf资料

n OUTPUT CURRENT UP TO 1.5 A n OUTPUT VOLTAGESOF 5; 5.2; 6; 8; 8.5; 9; 12; 15; 18; 24V n THERMAL OVERLOAD PROTECTION n SHORTCIRCUIT PROTECTION n OUTPUT TRANSITION SOA PROTECTION