參數(shù)資料
型號(hào)： TDA8425
廠商： NXP SEMICONDUCTORS
元件分類： 音頻控制
英文描述： Hi-Fi stereo audio processor;IIC-bus(IIC總線 高保真立體聲音頻處理器)
中文描述： 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP20
封裝： PLASTIC, DIP-20
文件頁(yè)數(shù)： 5/24頁(yè)
文件大?。?/td> 285K
代理商： TDA8425
October 1988
5
Philips Semiconductors
Product specification
Hi-fi stereo audio processor; I
2
C-bus
TDA8425
Bass control
The bass control stage can be switched from an emphasis of 15 dB to an attenuation of 12 dB for low frequencies in
steps of 3 dB.
Treble control
The treble control stage can be switched from +12 dB to
12 dB in steps of 3 dB.
Bias and power supply
The TDA8425 includes a bias and power supply stage, which generates a voltage of 0.5
×
V
CC
with a low output
impedance and injector currents for the logic part.
Power-on reset
The on-chip power-on reset circuit sets the mute bit to active, which mutes both parts of the treble amplifier. The muting
can be switched by transmission of the mute bit.
I
2
C-bus receiver and data handling
Bus specification
The TDA8425 is controlled via the 2-wire I
2
C-bus by a microcomputer.
The two wires (SDA
serial data, SCL
serial clock) carry information between the devices connected to the bus. Both
SDA and SCL are bidirectional lines, connected to a positive supply voltage via a pull up resistor.
When the bus is free both lines are HIGH.
The data on the SDA line must be stable during the HIGH period of the clock. The HIGH or LOW state of the data line
can only change when the clock signal on the SCL line is LOW. The set up and hold times are specified in AC
CHARACTERISTICS.
A HIGH-to-LOW transition of the SDA line while SCL is HIGH is defined as a start condition.
A LOW-to-HIGH transition of the SDA line while SCL is HIGH is defined as a stop condition.
The bus receiver will be reset by the reception of a start condition. The bus is considered to be busy after the start
condition.
The bus is considered to be free again after a stop condition.
Module address
Data transmission to the TDA8425 starts with the module address MAD.
Fig.3 TDA8425 module address.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA8425/V7,112 功能描述:IC STEREO AUDIO PROC HI-FI 20DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6
TDA8426 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hi-fi stereo audio processor; I2C-bus
TDA8432 制造商:未知廠家 制造商全稱:未知廠家 功能描述:COMPUTER-CONTROLLED DEFLECTION PROCESSOR FOR VIDEO DISPLAYS
TDA8433 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Deflection processor for computer controlled TV receivers
TDA844 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octuple 6-bit DACs with I2C-bus
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