參數(shù)資料
型號(hào)： TDA8574T
廠商： NXP SEMICONDUCTORS
元件分類： 通用總線功能
英文描述： Class-H high-output voltage level line driver
中文描述： DUAL LINE DRIVER, PDSO16
封裝： 7.50 MM, PLASTIC, SO-16
文件頁(yè)數(shù)： 4/16頁(yè)
文件大?。?/td> 141K
代理商： TDA8574T
1998 Oct 16
4
Philips Semiconductors
Product specification
Class-H high-output voltage level line
driver
TDA8574
PINNING
SYMBOL
PIN
DESCRIPTION
V
CCL
INL
SVRL
INML
INMR
SVRR
INR
V
CCR
CR+
CR
RGND
OUTR
OUTL
LGND
CL
CL+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
supply voltage left channel
input voltage left channel
SVRR left channel
inverting input left channel
inverting input right channel
SVRR right channel
input voltage right channel
supply voltage right channel
lift capacitor (+) right channel
lift capacitor (
) right channel
ground right channel
output voltage right channel
output voltage left channel
ground left channel
lift capacitor (
) left channel
lift capacitor (
+
) left channel
Fig.2 Pin configuration.
handbook, halfpage
TDA8574
TDA8574T
MGE667
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCCL
INL
SVRL
INML
INMR
SVRR
INR
VCCR
CR
+
CR
RGND
OUTR
OUTL
LGND
CL
CL
+
FUNCTIONAL DESCRIPTION
Lift amplifier
The lift amplifier, referred to as LIFT AMP. in Fig.1, is used
as a non-inverting amplifier with a voltage gain of 8 dB set
by an internal feedback network. If the output voltage of
the signal amplifier is low, the external lift capacitor is
recharged by the lift amplifier. As soon as the output
voltage of the signal amplifier increases above 0.87
×
V
CC
the lift amplifier switches the voltage of the lift capacitor in
series with the supply voltage V
CC
. The voltage at the
positive side of the lift capacitor is referred to as lifted
supply voltage.
Signal amplifier
The signal amplifier, referred to as SIGNAL AMP. in Fig.1,
is used as a non-inverting amplifier. The voltage gain G
v
is
set by the feedback resistors according to the formula:
and should be set to 8 dB. The LIFT AMP. and SIG AMP.
must have equal voltage gain G
v
. The rail-to-rail output
stage of the signal amplifier uses the lifted supply voltage
to increase the output voltage swing.
G
v
1
R
2
1
R
+
=
The DC output level is set to
≈
0.87
×
V
CC.
The maximum
peak-to-peak output voltage of the signal amplifier is
calculated with the formula:
Buffers
The buffers prevent loading of the internal voltage divider
network made by a series connection of resistors. For a
good supply voltage ripple rejection this internal voltage
divider network has to be decoupled by an external
capacitor.
Reference
This circuit supplies all currents needed in the device.
V
o p
p
–
(
)
max
2
0.87V
CC
0.4
–
(
)
×
≈
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參數(shù)描述
TDA8574T/N1 功能描述:音頻放大器 CARRADIO POWER AMPS RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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
TDA8574T/N1,512 功能描述:音頻放大器 CARRADIO POWER AMPS RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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
TDA8574T/N1,518 功能描述:音頻放大器 CARRADIO POWER AMPS RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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
TDA8574T/N1-T 功能描述:音頻放大器 CARRADIO POWER AMPS RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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
TDA8575 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Ground noise isolation amplifier
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