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參數(shù)資料
| 型號(hào)： | TDA8564Q |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2 x 24 W BTL or 4 x 12 W single-ended car radio power amplifier |
| 中文描述： | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZIP17 |
| 封裝： | POWER, PLASTIC, SOT-243-1, DIL-BENT-SIL, 17 PIN |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大小： | 81K |
| 代理商： | TDA8564Q |
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February 1995
5
Philips Semiconductors
Preliminary specification
2
×
24 W BTL or 4
×
12 W single-ended car
radio power amplifier
TDA8564Q
Diagnostic output (pin 16)
D
YNAMIC DISTORTION DETECTOR
(DDD)
At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin 16
goes LOW. This information can be used to drive a sound
processor or DC volume control to attenuate the input
signal and thus limit the distortion. The output level of
pin 16 is independent of the number of channels that are
clipping (see Figs 4 and 5).
S
HORT
-
CIRCUIT PROTECTION
When a short-circuit occurs at one or more outputs to
ground or to the supply voltage, the output stages are
switched off until the short-circuit is removed and the
device is switched on again, with a delay of approximately
20 ms after removal of the short-circuit. During this
short-circuit condition, pin 16 is continuously LOW.
When a short-circuit across the load of one or more
channels occurs the output stages are switched off during
approximately 20 ms. After that time it is checked during
approximately 50
μ
s to see whether the short-circuit is still
present. Due to this duty cycle of 50
μ
s/20 ms the average
current consumption during this short-circuit condition is
very low (approximately 40 mA).
During this short-circuit condition, pin 16 is LOW for 20 ms
and HIGH for 50
μ
s (see Fig.6).
The power dissipation in any short-circuit condition is
very low.
T
EMPERATURE DETECTION
When the virtual junction temperature T
vj
reaches 150
°
C,
pin 16 will be active LOW.
O
PEN
-
COLLECTOR OUTPUT
Pin 16 is an open-collector output, which allows pin 16 of
more devices being tied together.
Fig.4 Distortion detector waveform; BTL application.
handbook, halfpage
V
0
VP
VO
0
t
MGA705
16
Fig.5
Distortion detector waveform; single-ended
application.
handbook, halfpage
0
VP
VO
t
0
MGA706
V16
Fig.6 Short-circuit waveform.
handbook, full pagewidth
MGA707
short-circuit over the load
20 ms
50
μ
s
t
t
VP
current
in
output
stage
V16
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| TDA8568 | 4 x 25 W BTL quad car radio power amplifier |
| TDA8569 | 4 x 25 W BTL quad car radio power amplifier |
| TDA8571 | 4 x 40 W BTL quad car radio power amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA8565Q | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4 x 12 W single-ended car radio power amplifier with diagnostic interface |
| TDA8566 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2 ⅴ 40 W/2 W stereo BTL car radio power amplifier with differential inputs and diagnostic outputs |
| TDA8566Q | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2 x 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs |
| TDA8566Q/N2,112 | 功能描述:音頻放大器 CARRADIO POWER AMPLIFIERS 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 |
| TDA8566Q/N2C | 功能描述:音頻放大器 2X25W BTL STEREO RADIO PWR AMP 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 |
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