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參數(shù)資料
| 型號： | TDA8561TH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 12 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| 封裝： | PLASTIC, HSOP-20 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大小： | 128K |
| 代理商： | TDA8561TH |
2000 Feb 18
4
Philips Semiconductors
Preliminary specication
2
× 24 W BTL or 4 × 12 W single-ended
car radio power amplier
TDA8561TH
PINNING
SYMBOL
PIN
DESCRIPTION
INV3
1
inverting input 3
DIAG
2
diagnostic output
INV4
3
non-inverting input 4
n.c.
4
not connected
n.c.
5
not connected
n.c.
6
not connected
n.c.
7
not connected
INV1
8
non-inverting input 1
SGND
9
signal ground
INV2
10
inverting input 2
SVRR
11
supply voltage ripple rejection
VP1
12
supply voltage 1
OUT1
13
output 1
PGND1
14
power ground 1
OUT2
15
output 2
OUT3
16
output 3
PGND2
17
power ground 2
OUT4
18
output 4
VP2
19
supply voltage 2
MODE
20
mode select switch
(standby/mute/operating)
handbook, halfpage
INV3
DIAG
INV4
n.c.
INV1
SGND
INV2
MODE
VP2
OUT4
PGND2
OUT2
PGND1
OUT3
OUT1
VP1
SVRR
1
2
3
4
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
TDA8561TH
MGS987
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
The TDA8561TH contains four identical amplifiers and can
be used for Single-Ended (SE) or Bridge-Tied Load (BTL)
applications. The gain of each amplifier is fixed at 20 dB
(26 dB in BTL). Special features of the device are:
Mode select switch (pin 20)
Low standby current (<100 A)
Low switching current (low cost supply switch)
Mute facility.
To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during
≥100 ms (charging of the input
capacitors at pins 1, 3, 8 and 10). This can be achieved
by:
Microcontroller control
External timing circuit (see Fig.11).
Diagnostic output (pin 2)
DYNAMIC DISTORTION DETECTOR
At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin 2
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 2
is independent of the number of channels that are clipping
(see Figs 3 and 4).
SHORT-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 2 is continuously LOW.
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| TDA8561TH/N3S/S422 | 制造商:NXP Semiconductors 功能描述:- Tape and Reel |
| TDA8562 | 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 dynamic distortion detector and diagnostic interface |
| TDA8562Q | 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 dynamic distortion detector and diagnostic interface |
| TDA8563 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2 x 40 W/2 ohm stereo BTL car radio power amplifier with diagnostic facility |
| TDA8563A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2 x 40 W/2 ohm stereo BTL car radio power amplifier with diagnostic facility |
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