TDA7850 power amplifier IC is a chip that enthusiasts often use when retrofitting CD hosts with high-frequency power amplifier chips. This is a four-channel car audio special power amplifier chip high-frequency power amplifier chip , using the output form of BTL high-frequency power amplifier chip , few peripheral components but excellent sound quality, installation is also very convenient, the package is 25-pin double-in-line. The output power of the IC chip is high-frequency power amplifier chip : 4×50W.
TDA7850 adopts double-sided gold-plated plate, very few components, IC was originally a four-channel BTL IC for automotive power amplifier, but the sound quality is excellent, the installation is also extremely simple, using a single DC 12V, the limit is 15V, the product uses MOS tube to amplify the output, the output power is large for low-resistance speakers. Chips or microchips, integrated circuits, in electronicsElectrical characteristics: Application: D2822 dual-channel audio power amplifier circuit is widely used in portable recorders and radio power amplifiers.
2. Figure 5-107 shows the circuit. With a piece of TDA2822M power amplifier integrated circuit connected to BTL mode, (mono use, stereo to two pieces) peripheral components only one resistor and two capacitors, without installing a radiator, the sound playing effect is also satisfactory.
3, measure the static working current of TDA2822, the normal tens of MA (20-50 MA), such asToo big or too small is bad.
4, d2822a power amplifier parameters: low working voltage: the lowest working voltage is 8V; Static current and cross distortion are very small, the circuit can work in stereo dual channel, can also be connected to BTL circuit. Stereo operating output power is 1W×2 (Vcc=9V, RL=8Ω, THD = 10%) or 110mW×2 (Vcc=3V, RL=4Ω, THD = 10%).
1, PA2030A is a power amplifier chip, the detailed parameters are as follows: high-frequency power amplifier chip : Type High-frequency power amplifier chip : amplifier. Maximum output power: 1W. Operating voltage: 3-12V. Maximum power consumption: 6W. Current - Maximum input bias current (IO) : 100μA (Typ.). Voltage - Maximum input bias voltage (VB) : 15V.
2, maximum 18v, limit 28v, maximum current 10A. According to the inquiry Jingdong official websiteThe information shows that the pioneer pa2030a is a chip, the maximum parameter of the chip is 18v, the limit is 28v, the maximum current is 10A.
3. Yes. Automotive power amplifier IC PA2030a official data TDA7854 is the maximum 18v, the limit 28v. PA2030a is the Japanese version, TDA7854 is the European version, the same high-frequency power amplifier chip IC. The maximum current can reach 10A, working in BTL state. PA2030A power 4X60W, sitting back can feel the horn is ringing, and heavyThe bass sinking is more obvious.
4, no. According to the query of pa2030a related information, pa2030a sound quality is not good. PA2030A is a customized audio power amplifier chip of Pioneer company, so the manufacturer's specifications can not be found, and Toshiba is commissioned to produce.