參數(shù)資料
型號(hào)： TDA7493
廠商： STMICROELECTRONICS
元件分類(lèi)： 音頻／視頻放大
英文描述： 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
封裝： ROHS COMPLIANT, MO-153ADT, SSOP-24
文件頁(yè)數(shù)： 9/30頁(yè)
文件大?。?/td> 863K
代理商： TDA7493
TDA7493
Application information
Doc ID 14570 Rev 5
17/30
5.7
Protection function
The TDA7493 has four types of protection: overvoltage (OV), undervoltage (UV), thermal
(OT) and short circuit (SC):
overvoltage protection (OVP) for the supply VCC > 6 V
undervoltage protection (UVP) for the supply VCC < 3 V
thermal protection (OTP) for the junction temperature Tj > 155 °C
short-circuit protection (SCP) across the load (tested at VCC = 5.0 V).
When any of the above protection becomes active, the output goes to a high-impedance
state. The device remains in this state until the condition is cleared or rectified, when the
circuit restarts again.
5.8
Differential input
The TDA7493 can be used with either differential or single-ended inputs. In either case, the
device must be AC coupled to the audio source.
To use the device with a differential source, connect the positive lead from the audio source
to the INP input and the negative lead to the INN input as shown in Figure 11. The
differential input stage of the amplifier minimizes the common mode noise effectively.
In the differential input application:
input impedance is given by 2 * Rin,
cut-off frequency of the input filter is given by
fc = 1 / (2 *
π * Cin / 2 * 2 * Rin) = 1 / (2 * π * Cin * Rin).
Typically, Rin = 30 k
and Cin > 330 nF to get a cut-off frequency less than 20 Hz.
Figure 11.
Differential input application
Cin
TDA7493
Input stage
-
+
Aud
io
So
ur
ce
OUTP
OUTN
INP
INN
Rin
Rfb
相關(guān)PDF資料
PDF描述
TDA7494 1 CHANNEL(S), VOLUME CONTROL CIRCUIT, ZFM15
TDA7495 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PZFM15
TDA7496SA 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PZFM15
TDA7496SSA 5.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15
TDA7498MVTR 100 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO36
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA749313TR 功能描述:音頻放大器 3W and 3Watt Dual BTL Class D Audio RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7494 功能描述:音頻放大器 10W DC Amp w/Vol Cnt RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7494S 功能描述:音頻放大器 Video switch chip RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7494SA 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:5W+5W AMPLIFIER WITH DC VOLUME CONTROL
TDA7495 功能描述:音頻放大器 11W DC Amp w/Vol Cnt RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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