The so-called analog chip is the first hurdle for processing external signals. The source of all data is the analog signal, and the analog chip is an integrated analog circuit for processing analog signals. Analog signals are signals that are continuous in time and amplitude, while digital signals are signals that are discontinuous in time and amplitude. After the external signal is converted into an electrical signal by the sensor, it is an analog signal, which is further amplified and filtered in the system composed by the analog chip. The processed analog signal can either be output to a digital system for processing through a data converter or directly to an actuator.
Common digital-to-analog hybrid systems include: cell phones, personal computers, digital cameras, microphones, speakers, etc. in the consumer field, temperature detectors, electrocardiographs, aircraft systems in the industrial field, and reversing displays in the automotive field, etc. Analog chips are ubiquitous.
(Analog chip is an essential part of signal processing) analog chip market size will exceed $ 70 billion, power management and signal chain together accounted for nearly 70%!
According to the function, analog chips can be divided into power management chips, signal chain chips, RF chips, where RF chips are signal chain chips that deal with the RF band, in order to facilitate the distinction, we will signal chain chips and RF chips are listed separately. According to the input/output response relationship, analog chips can be divided into linear circuits (such as operational amplifiers) and nonlinear circuits (such as analog multipliers); according to different application areas can be divided into general-purpose circuits and special-purpose circuits, general-purpose circuits such as operational amplifiers, voltage regulators, analog-to-digital converters, digital-to-analog converters, etc., and special-purpose circuits such as audio circuits, TV receiver circuits, etc.
Among them, operational amplifiers are the “basic building blocks” of analog circuits and are used in a wide range of applications. Operational amplifiers are amplification circuits that add and integrate analog signals, and are often used to amplify small, weak signals into large ones. At the same time, operational amplifiers are the basis of many analog devices, digital-to-analog converters, current-to-voltage converters, filters, comparators, linear regulators, etc. all need op amps.
(Op-amps are the basis of many analog devices, for example, filters are composed of op-amps and resistors) Shanghai Centron IC Co., Ltd. is a high-tech enterprise focusing on high-performance analog-intensive chips and advanced sensor solutions. Ltd. is a high-tech enterprise focusing on high performance analog-intensive chips and advanced sensor solutions. With the emphasis on independent research and development and continuous innovation, Centric has more than 500 products, building the most complete series of high precision amplifier products in China, and continues to launch new products in data converter, voltage reference and LDO product lines. Recently, Huaqiu Electronics, a one-stop service platform for the electronics industry, has established a partnership with Centric and become its authorized agent. Customers can now purchase Centrum products through Huachu Mall!
Product Introduction
Check Current Amplifier
LT199G1XC6/R6 Application Areas: BMS, Car Electric Seats, E-Bike Smart Center ECU, Communication Devices, Electronic Cigarettes LT199 series is a high resolution current detector amplifier with integrated precision matched thin film resistors, capable of accurately monitoring current signals from 0V to 26V on the power supply rail with excellent input common mode rejection performance; it can sense shunt It can sense the voltage drop across the shunt resistor for bi-directional current measurement. Available in three fixed gains: 50V/V, 100V/V, and 200V/V, the devices feature a zero-drift architecture with low offset, allowing current sensing to maintain the maximum voltage drop across the shunt resistor at a minimum of 10mV full scale. The LT199 series devices are powered from a single 2.5V to 18V supply and consume a maximum supply current of 100µA. All versions are rated from -40°C to 125°C and are available in SC70-6 and SOT23-6 packages. Common mode voltage range: -0.3 V to 26 V Supply operating range: 2.5V ~ 18V Voltage detuning: ±150 μV Accuracy: 0.5 % gain error max. 0.5 μV/°C detuning drift max. 10 ppm/°C gain error Gain selection: LT199G1: 50V/V LT199G2: 100V/V LT199G3: 200V/V Static current: 100 μA
Ultra Low Power Amplifiers
LTC8814YS14/R5 Application areas: gas sensors, PIR motion detection, ion sense smoke alarms, IOT LTC881x series ultra-low-power operational amplifiers are wireless and low-power wired devices, LTC8811, LTC8812 and LTC8814 are single-channel, dual-channel and quad-channel amplifiers, respectively, with rail-to-rail input and output oscillation All devices are guaranteed to operate with a single 1.8 V to 5 V supply. The LTC881x amplifiers minimize power consumption in devices such as CO detectors, smoke detectors, and motion detection safety systems such as PIR motion detection, where battery life is critical. Ultra-low quiescent current: 600nA (5V supply) Supply range: 1.7V-5.5V Bandwidth: 15KHz Low out-of-range voltage: 0.6mV Low noise: 0.6μVpp Bias current: 1pA Temperature range: -40°Cto+125°C
Data converter
GP9301B Application areas: motor speed control, LED dimming, signal conversion and acquisition GP9301B is an analog signal to PWM signal converter, equivalent to a PWM signal output ADC. this chip can convert 0V to 10V analog voltage linearly into a duty cycle of 0% to 100% PWM signal, and the duty cycle linearity error is less than 0.5%. It also supports 100K resistor and PWM signal input. The chip also supports capacitive isolation scheme. The GP9301B converts analog voltage input from 0V to 10V linearly into PWM signal output with 0% to 100% duty cycle. Input signal: compatible with 0-10V, PWM, 100KΩ resistor Input PWM signal high level: >2.7V Input signal on VIN pin, built-in 100uA pull-up current Output PWM signal frequency range: 1Hz to 1MHz Output PWM signal high level: 5V Maximum PWM duty cycle error: < 1% PWM duty cycle linearity error <0.5% Supply voltage : 10V – 40V Power consumption: 2. mA @TYP Start-up time: <2ms Operating temperature: -40 ℃ ~ 85 ℃
There are many parameters of integrated op amps, among which the main parameters are divided into DC and AC indicators, plus all chips have limit parameters.
